In Britain, moving to a new stage in the development of a new generation of GaN radar for fighter jets

British defense company BAE Systems announces the transition to a new stage in the development of promising radar for fighter jets. This is a new generation of radars, which, as planned, will combine the technology of electronic warfare (EW) and communications.

Representatives of the research laboratory of the aforementioned company report that a semiconductor technology based on gallium nitride (GaN) with a millimeter range for use in new generation radars is being carefully studied and phased.

BAE Systems is promoting millimeter-wave gallium nitride (GaN) semiconductor technology for the implementation of next-generation radar systems - electronic warfare and communications. These GaN radars are planned to be used in promising means. aviation, including fighters, which theoretically belong to the 6th generation of the Air Force.

The combination of GaN used makes it possible to provide a relatively wide spectrum of frequencies with high information transfer efficiency. One of the main advantages that British researchers are talking about is the small size of the transmitting and receiving devices in comparison with those that are in operation today. At the same time, the power of the output signal remains high.

Gallium nitride is said to reduce the cost of creating a high-performance radar.

Chris Rappa, Director of Radar Product Range:

The GaN program provides the basis for the development of advanced technologies that could lead to the emergence of new critical technologies for the next generation of fighter aircraft.

It is noted that such work is carried out both in the interests of Britain and in the interests of the United States "taking into account American technological experience."

Previously, the creation of a new radar based on gallium nitride was announced in the American Raytheon. In this case, the radar is created for advanced air defense systems, which are designed to replace the Patriot air defense system.

Comments

[Aaron Zawi]

The most complex and most promising technology.

[Vrungeli]

Quote: Aaron Zawi

The most complex and most promising technology.

Are you there in Israel trying to Aron?
Then you are in the first lines ..))))

[lucul]

The most sophisticated and most promising technology

Yeah, do they have Gallium deposits there? )))

[Mountain shooter]

Quote: Aron Zaavi

The most sophisticated and most promising technology

I agree ... we have been using gallium nitride on sapphire for a long time ... I suspect that for the same purpose ... surprisingly, the technology of epitaxial growth of gallium nitride was developed by the group of Zhores Alferov. And in Taiwan, it was these guys who launched the technology. LEDs ...

[hydrox]

35 years ago, physicists from the Institute of Physics and Technology of the Siberian Branch of the Academy of Sciences already dabbled in epitaxial films on gallium arsenide, and what has become so attractive about nitride?

[tikhonov66]

and than nitride has become so attractive now

Eeeee - well, in particular - the band gap increased relative to silicon, which provides an increased upper working temperature of the crystal.

As you know, the conductivity of the "intrinsic" (ie completely pure - absolutely free of impurities) semiconductor is proportional to
e "to the power" (- "bandgap" / 2kT)
- So, its own semiconductor-silicon - becomes practically a "conductor" already at 150 degrees Celsius, and accordingly, the limiting temperature of the crystal - cannot be higher than 150 degrees. And given the thermal resistance of the semiconductor device case - the maximum temperature of the operating environment for silicon devices - does not exceed 125 degrees.
- Whereas devices based on gallium nitride - it is quite possible to operate at 200 degrees Celsius. And considering that the heat transfer rate is proportional to the temperature difference between the refrigerator (the external environment of operation of the device) and the heater (semiconductor device) - with the same dimensions of the device and the same operating conditions, the gallium nitride device can dissipate almost twice as much power.

- for which they fought ...

[hydrox]

And for such applications, they did not try to use silicon (it did not pull in frequency at all), they put more on gallium arsenide ...

[hydrox]

And tell me please, dear Aron, what are these "most complex" qualities and what is the most promising and most advanced technology that distinguishes AFAR on GaN from AFAR on GaAs?
Performance? At a price? Manufacturability? Immunity? Heat sink?
And praise, praise, and for what - it is not clear.

[Mountain shooter]

Quote: hydrox

Aron, what are these "most complex" qualities and what is the most promising and most advanced technology that AFAR on GaN differs from AFAR

May I answer?
Gallium nitride works at higher temperatures than arsenide, and the thermal conductivity of sapphire on which it is grown is quite decent. And in other properties - not inferior. Accordingly, the power of the module can be raised, with the same dimensions. Strong. More than two times.

[hydrox]

Thanks for the info: yes, it’s slightly impressive, but you must admit that this is not a breakthrough.
How is it with the detection distance? Back to the cube, or is it still the fourth degree of power?

[Max Lebedev]

Quote: hydrox

How is it with the detection distance? Back to the cube, or is it still the fourth degree of power?

Well, if force is squared, then power is probably cube?

[Wolf]

The most promising photon radar technology, is an intermediate technology or M option.

[Thrifty]

It remains only to hope that we will not lag behind the West in this technological race.

[Kolka Semenov]

We lag behind so far and there are no grounds for reverse thoughts, alas.

We have to seriously invest in electronics, and preferably not even yesterday but the day before yesterday. Today we have the results of investments a decade ago. As the situation in this area does not change, tomorrow the situation will be worse for us than today.

[Pavel73]

There is GaN in Russia. In Voronezh.

[Kolka Semenov]

And not only in Voronezh but also in Tomsk. The problem is that having a GaN and having an MRM from GaN are two big differences.

[Mountain shooter]

Quote: Kolka Semyonov

The problem is that having a GaN and having an MRM from GaN are two big differences.

And what do "Pulsar" and "Istok" do? The rest, sorry, SS.

[Kolka Semenov]

Quote: Mountain Shooter

And what do "Pulsar" and "Istok" do? The rest, sorry, SS.

Yeah, and where is the result? So far, the introduction of AFAR is not even based on GaN technology, but at least on GaAs, there are big problems. Strong dependence on the foreign component base and complete reluctance to develop their own. One example, albeit an indirect one: in the Russian Federation for over 20 years there have been (and probably still are) preferences for foreign manufacturers of aircraft. This led to the half-dead state of our civil aviation manufacturers. Or here is the desire to make SSJ purely in cooperation with foreigners, which led to the current stagnant position of this ship. It’s somehow impossible to push it to EBN, and so it is everywhere, in general everywhere.
You suggest me to believe that everything is different with GaN technology? Well, I do not. Faith is to fools.

[Mountain shooter]

Quote: Kolka Semyonov

So far, the introduction of AFAR is not even based on GaN technology, but at least on GaAs, there are big problems. Strong dependence on the foreign component base and complete reluctance to develop their own.

Well, how do you know? I supply them with equipment for working with gallium nitride. What are you guided by?

[Kolka Semenov]

Quote: Mountain Shooter

Well, how do you know? I supply them with equipment for working with gallium nitride. What are you guided by?

Common sense and ability to analyze information.

[Mountain shooter]

Quote: Kolka Semyonov

with good sense and ability to analyze information

Information from the Internet? Or chipboard materials?

[Kolka Semenov]

Only open data.

[Mountain shooter]

Quote: Kolka Semyonov

Open data only

There is nothing reliable in open sources on this topic (our AFAR). From the word ALL. Information as it was closed, so now it is even more closed ... "Mikran" works on GaAs technology, and many others on GaN ... And there are NO and cannot be imported components - it has long been banned for use. The replacement was hard, but you can't argue against the instruction. And what do you have against the "Superjet"? They have already made 200 pieces!
Not a small park at all. His problems are service, they are being solved, and they will be solved soon completely. The French with the engine also drove the brachocks along the "hot part" ... The Permians resisted, corrected ...

[Kolka Semenov]

I have nothing against the Superjet, except for a claim to the approach to its implementation - initially they could put everything in their own way and there would be no problems with the same service, which pretty much hung up including on import. And cooperation with foreigners did not justify itself (IMHO) since the board turned out to be like a child of seven nannies and the project itself was dragged out purely by the efforts of the Sukhoi Design Bureau. The officials of the Russian Federation have some kind of servility to all Westerners, which I personally would have treated with healing shots.

As for the production of AFAR, my skepticism will weaken only when AFAR will be massively put on both air defense systems and aircraft. As long as there is a Beetle-A for the MiG-35 which more and more resembles that stewardess and confusion with the Squirrel, since the deadlines for the implementation of the Su-57 program creep to the right all the time and it is not clear from what. An indicator of the affairs in the field of AFAR is also what Indians want to modernize the Su-30 AFAR, while ours only crumple in response, although this market is huge and must be taken at any cost. Yes, the Indians are still ... dancers, I don’t argue, but anyway.

[Mountain shooter]

Quote: Kolka Semyonov

it is not clear from what. An indicator of affairs in the field of AFAR is that Indians want to modernize the Su-30 AFAR, while ours only crumple in response, although this market is huge and it must be taken at any cost

Does it occur to you that AFAR is secret? Well, not everything can be "sold" for export! Even what is on our Su-35 and MiG-35 is deeply secret. The AFAR plant has already been built. So it's not as bad as it sounds. Have you heard a lot in the open press about "Vanguards", "Zircons" and "Daggers" ...? And avionics are an even more secret thing ...

[Kolka Semenov]

Quote: Mountain Shooter

Doesn't it occur to you that AFAR is secret? Well, not everything can be "sold" for export! Even what is on our Su-35 and MiG-35 is deeply secret.

This is rather stupid, because if there was an AFAR, it would be possible to leave a few weaknesses in it, and sell a couple of back-doors to the Indians in export guise - the proceeds would completely cover R&D and other costs and give money for new development.

Quote: Mountain Shooter

The AFAR plant has already been built. So it's not as bad as it seems. Have you heard a lot in the open press about "Vanguards", "Zircons" and "Daggers" ...? And avionics are an even more secret thing ...

This secrecy demonstrates two things: 1. There can be nothing and no, and the best way to cover up your bare ass is to keep it secret. 2. Even if there is something, then they have the feeling that there is nothing, while for Western intelligence all this secrecy is like a fig leaf in one place. As for the Vanguard, Zircon and Dagger, they obviously are, otherwise they would not have been advertised so eagerly. A dagger is a shallow alteration of Iskander. I believe that Zircon is, but as for AFAR, I doubt it and only my series will dispel my doubts.

[Stalllker]

Speak now too. There are enough technologies, but the implementation is lame

[rocket757]

Our military sphere of science, the mystery behind seven seals ... the boom to consider that our military always has a trump card in its sleeve, there is something to surprise the enemy with, radical and final.

[Aaron Zawi]

Quote: rocket757

Our military sphere of science, the mystery behind seven seals ... the boom to consider that our military always has a trump card in its sleeve, there is something to surprise the enemy with, radical and final.

You have 1500 nuclear warheads. Well, which opponent? Only somewhere in third countries, well, or a suicide country.

[rocket757]

Whenever it ends, the unconditional priority of vigorous arguments over all others is also not infinite.
Do you think you're alone able to understand this?
You always need a trump card in your sleeve if the baton suddenly does not work as it should.

[bk0010]

Quote: Aron Zaavi

You have 1500 nuclear warheads.

This is more than 4 times less than necessary. In addition, the government is afraid to use them, so the usual funds are also required in full. And given the number of "well-wishers", these conventional funds need a lot.

[Stalllker]

It is necessary for what ???

[bk0010]

Quote: Stalllker

It is necessary for what ???

To cover the goals, of course. There are more than 13000 airfields in the states. Of course, most of them are not 1 or 2 classes, but they also have many high-class airfields. And there are few charges.

[Stalllker]

We have no opponents, but the "envious" eat. Well, partners too

[askort154]

Aron Zaavi You have 1500 nuclear warheads. Well, which opponent?

And how much do you have ?

[Aaron Zawi]

Quote: askort154

Aron Zaavi You have 1500 nuclear warheads. Well, which opponent?

And how much do you have ?

Far less.

[askort154]

Aron Zaavi ..... [i] Much less. [/ I

For state suicide, the size of 200x450 km. - a lot and do not.

[Aaron Zawi]

Quote: askort154

Aron Zaavi ..... [i] Much less. [/ I

For state suicide, the size of 200x450 km. - a lot and do not.

Yes, but our winners will turn into a third world country. Well, they decide, but is it worth it?

[askort154]

Aaron Zaavi ..... Yes, but our winners will turn into a third world country. Well, they decide, but is it worth it?

You hope for your "godfather". In vain! He is a professional "scammer".

[Aaron Zawi]

Quote: askort154

Aaron Zaavi ..... Yes, but our winners will turn into a third world country. Well, they decide, but is it worth it?

You hope for your "godfather". In vain! He is a professional "scammer".

Only on "Samson's plan".

[askort154]

Aaron Zaavi ....Only on "Samson's plan".

This is who took part in the development of the "Barbarossa plan" ?!
: :

[Aaron Zawi]

Quote: askort154

Aaron Zaavi ....Only on "Samson's plan".

This is who took part in the development of the "Barbarossa plan" ?!
: :

Troll?

[askort154]

Aron Zaavi Troll?

Mutually!

[Cottodraton]

All your potential rivniks of the already 3rd country of the world

[d ^ Amir]

You have 1500 nuclear warheads. Well, which opponent? Only somewhere in third countries, well, or a country of suicide

Dear Aron !!! this is Ultima ratio regum, in the most extreme case

[Vrungeli]

Quote: rocket757

Our military sphere of science, the mystery behind seven seals ... the boom to consider that our military always has a trump card in its sleeve, there is something to surprise the enemy with, radical and final.

Victor agrees! But some "tovaischi" disagree with us. They hate Russia terribly ..

Quote: Aron Zaavi

You have 1500 nuclear warheads. Well, which opponent? Only somewhere in third countries, well, or a suicide country.

They scoff at me openly .. Eh Aron sometimes you think And why did Hitler hate you so much (just kidding)))))))

[rocket757]

Quote: Vrungeli

They’re scoffing in the open .. Eh Aron ....

You can consider yourself very ... humorous, cunningly clever. The more fun it is to learn that this is far from the case!

[Vrungeli]

Quote: rocket757

Quote: Vrungeli

They’re scoffing in the open .. Eh Aron ....

You can consider yourself very ... humorous, cunningly clever. The more fun it is to learn that this is far from the case!

Well said ..I also think so Victor!

[Aaron Zawi]

Quote: Vrungeli

They scoff at me openly .. Eh Aron sometimes you think And why did Hitler hate you so much (just kidding)))))))

Probably because your grandfather served Hitler.

[3danimal]

They hate Russia terribly ..

Seriously? There are many reasons to say so? Are they all, or some?

[Zaurbek]

The main thing that would have happened like in the Crimean War. We have smoothbore guns, while the Britons and French have rifled.

[rocket757]

It was, they also had more steam ships .... Comrade Stalin and our people did their best so that this would not happen again! though we, under the leadership of various "clowns" for almost two decades, again "razvlekuhu" with self-destruction staged .... we can not wake up now. Nothing, let's break through.

[3danimal]

"Comrade" was not part of the people, the latter perceived abstractly and with complete neglect, against the background of his goals.
Let me remind you that before the Bolsheviks arrived, RI produced its battleships.

[rocket757]

Quote: 3danimal

Comrade "was not part of the people,

The topic is too complex, worthy of special discussion ...... a question of personal perception.
The power of the Russian Empire, its victory and defeat, is also not so easy to appreciate.
But, one has to proceed from the fact that nothing so simple happens.

[Vadim237]

We already have rifled weapons - hypersonic missiles and guided planning warheads.

[rocket757]

The past power, potential, not just to argue why and how it all happened ... now it is much better. The army is getting stronger. This is necessary, we have too many "friends" around.

[homeshniy domovoy]

It may sound unfortunate, but in information technology Russia has lagged behind the West for a long time.

[vargo]

And how happy the understanding is that in information technologies we started to catch up with them a long time ago, and where to overtake them. Everything is ambivalent here, depending on where you look. There is of course a backlog, but not everywhere. Well, there are some achievements capable of catching up with others.

[homeshniy domovoy]

The truth in your words is, I do not argue

[rocket757]

ALL OTHER lagged behind the global monopolists ... and that is because they do not let them into this "tasty" market.
The second aspect .... and the West, from which Russia has lagged behind, is the HTO? Can you announce the list of computer market hicks?

[homeshniy domovoy]

Well, at least Microsoft, I can’t say anything about others.

[rocket757]

Microsoft is one of the largest multinational companies in ....
You compared with Russia, it is the STATE .... hto is the WEST?

[homeshniy domovoy]

There are other Western branch companies from Microsoft such as “bgC3”, there are several of them that are not in Russia and have no branches in our country.

[rocket757]

Several ... in addition to large companies, concentrate in themselves most of the achievements of the computer sphere ... They have long been like chickens, grain by grain, from all sides. From our side too.

[homeshniy domovoy]

I agree, why not.

[3danimal]

Well, why not let. What prevents competing with Intel and AMD in the field of processors? Agree with retail chains (in Russia, for starters) and sell.
Another thing is that our Elbrus is much more expensive (due to lower production volumes) with lower / similar characteristics. Who will buy it in the market?

[rocket757]

Quote: 3danimal

Well, why not let

Not so simple.
This is also why ..... remember what they said from above "Oil, we will sell resources, but we will buy everything we need" ??? Without targeted support from the state, this cart will not budge.

[Grazdanin]

Quote: domashniy domovoy

It may sound unfortunate, but in information technology Russia has lagged behind the West for a long time.

Somehow we were looking for a partner as a manufacturer of equipment for removing and transmitting data from housing and communal services metering devices. Contacted the company under the auspices of Rusnano. When they saw what they sent for tests, together with my engineers they neigh like horses.
1. In size, it was 5 times larger than its counterparts.
2. It didn’t work.
3. Not one domestic part, except for the case and the inscription "made in Russia"
4. Architecture from the early 90s. We only saw this at the university.
Crossed and sent back. It became sad.

[akarfoxhound]

Yeah, and they sent us a GLONAS navigator, too, about a miracle! The first one is the size of a Soviet diplomat, stuffed with lead, judging by the weight and capabilities of a regular smartphone (but with domestic software! Un updateable, true and always buggy ), the second worked like nothing, but the size is larger than the Amer Aviation JPS 295th time by 3 times and more expensive than once every 5. I keep silent about radio navigation updates

[Grazdanin]

Yeah. If you open and punch components in catalogs, then all of China.

[akarfoxhound]

Sales no doubt

[Vadim237]

Russian-made microprocessors for the military are.

[3danimal]

This is understandable, because the price does not matter there - you can also buy a reflashed mobile phone (push-button) for 200000r.

[3danimal]

Not patriots, you can see right away For the sake of this inscription could put and make work.

[rocket757]

Schaub the horse was riding, it is necessary to feed it, go to cherish .... our riders / bosses themselves love to eat and feed their households for slaughter, I do not stutter about grooming and cherishing.
Here's a horse, and she’s gone away ... and which, more quickly, pulled off to another plowman.
This is a SYSTEM, everything suits her.

[3danimal]

IMHO, you need to focus on private initiatives. Create all the conditions for this.

[rocket757]

Quote: 3danimal

IMHO, you need to focus on private initiatives. Create all the conditions for this.

Include private firms, businesses, in the process of creating a state-important system !!!
It’s early for us! For many reasons, objective and not very ...
Everything beyond the hill is such a SYSTEM of relations, cooperation was formed .... VERY LONG TIME. What works for a long time overgrows with a lot of rules, conventions, taboos and other things, that helps successful work!
We have not settled down yet, have not formed ... in short, you need TIME and an eye, but an eye, from all sides, until everything becomes as it should!

[3danimal]

And we have a practice of developed bureaucracy. Not very encouraging ..
Who will be “eye yes eye”? Are you Martians, or are you proposing to invite the Varangians?
I do not see any reasonable alternatives.
Take, for example, Lobaev. His company provides an upscale product. (Not Carpet with Izhevsk in this niche). And he was almost “covered up” earlier; everything worked out thanks to a share of luck. To minimize the ability of officials to “crush” business, in particular, in important areas, is the task.
Why did not comparable samples appear in Kovrov? What for? The plan is being implemented, orders from above are also ... The country of the victorious officials is here.

[rocket757]

Quote: 3danimal

The country of the victorious officials with us.

There is such a very persistent feeling.
The shtetl, departmental, and private interests overshadow the state need.
This is TROUBLE!
This knot can be cut only from above, otherwise we have no way.
And what is on top of us ??? This, after all, cannot be recognized as a normal procedure!
And so ... we exist.

[3danimal]

From above THAT that does not depend on us and owes nothing to us (I recall the phrase of Tuleyev). And while this state of affairs persists, there will be no changes.

[rocket757]

This system, the order will be preserved, for now .... yes, her FIG knows how long it will last! A hundred times it has already been said, discussed, shown and proved and .... NOTHING, no stirring, only grumbling, dissatisfied ... in the corners.

[BastaKarapuzik And]

The concept of the West is too vague. There are too many of these countries which are called "west". And not all of them have everything exactly the same. What technologies do you mean exactly? Are those based on Korean chips and assembled in Chinese factories? Or on discoveries in theoretical science, where Russia is also making a contribution? On Intel or Mykosoft, are there any Russian developers there? Or Chinese or Hindus?
Is Brazil quite a west to itself? In all countries there are some peculiarities, for example Obama was surprised by the antiquity of computers in the white house.

[Undecim]

In Britain, moving to a new stage in the development of a new generation of GaN radar for fighter jets
GaN radar does not exist. There is a Multifunction Phased Array Radar - a multifunctional phased array radar. And the introduction of GaN in the manufacture of semiconductor devices instead of LDMOS or Si-Bipolar Transistors can significantly reduce the overall and weight parameters of the equipment and increase the energy characteristics, which is necessary to create a compact MPAR that can be placed on an airplane.
In the photo there are modules of a similar purpose. On the right - "traditional technologies", on the left - based on GaN.

[K-612-O]

As soon as these radars shine on the output power, they will be like a Christmas tree. Our approach towards ROFAR seems more promising.

[Undecim]

Our approach towards ROFAR seems more promising. And also American, Chinese, Italian. These are different approaches and different devices.
As soon as these radars shine on the output power, they will be like a Christmas tree.
It will not.

[Zaurbek]

Rofar is a thing in itself .... heard, but no one saw .... even in pictures and not a single country does in parallel. It’s strange.

[ProkletyiPirat]

In fact, you are wrong, all countries are engaged in the creation of ROFARs, just everywhere it is called differently and has a different design, but the method is the same. It is like an aircraft of the "helicopter" class, which uses the "skew of the blades" method for its horizontal movement, and the "swashplate of the blades" itself can have a cloud of different specific implementations. Likewise, ROFARs have one method, and it consists in using several channels with different electromagnetic spectra in them, so as to minimize their influence on each other. Well, the complexity of ROFARs lies in the production of sensor blocks consisting of many different materials with different behavior under the same conditions. Actually, that's why you don't see "ROFAR-radar" because sensor units are created and tested in laboratories and some "full-scale" tests are unnecessary for them and even harmful because, unlike "test stands", the test cycles are not identical there.

Well, if you have read and did not understand the text above, I will explain it using the example of a helicopter, in other countries an aircraft using the "skewed blades" movement method is called the name of a specific "swashplate", and not "helicopter".

[Avior]

You would not fool people.
A helicopter is a word coined by designer Kamov after the war.
Before that, it was a helicopter all over the world and in the USSR.

A swashplate is a device for controlling the tilt of the blades of a helicopter, gyroplane or tiltrotor at any time with a certain angle of rotation

Rofar is a way to control the PPM modules.
Nowhere free

[ProkletyiPirat]

Quote: Avior

You would not fool people.

That's it, here it is completely: https://ru.wikipedia.org/wiki/ Rotorcraft
I quote and highlight in bold:

Helicopter (foreign name helicopter) - an aircraft with a main rotor (screws), which provides takeoff and landing, level flight and maneuvering only due to the swashplate of the blades.

Now show where the swashplate of the blades of the gyroplane? only please do not confuse in advance: blade swashplate, step change devices, device for changing the plane of rotation и rotor unloading device (or its drive).

Quote: Avior

Rofar is a way to control the PPM modules.

I decipher your text: "Rofar - a way to control the Receiving-Transmitting-Modules modules"if the last word is superfluous or" M "for" PPM "
But seriously, when in the Russian segment of the Internet, including VO, they started talking about the concept of "ROFAR" (Radio-Optical Phased Antenna Array), then a lot of articles from various "experts" (in quotes) appeared, which started with " clever "kind of yell about what""ROFAR" is the same "AFAR" only PPM is controlled by optics and therefore it is "super-duper protected from electronic warfare"", but it didn't reach the omniscient but nifiga who did not understand the heads that the electronic warfare acts on the PPM itself, and not on the wire (from the PPM to the controller), which is just the same easy to protect with a braid that suppresses and removes noise (with which there are problems in conventional radar with HEADLIGHTS ) and / or coded (not to be confused with encrypted!) control of PPM (as is done with modern AFAR). That is, if PHAR \ AFAR begin to struggle with noise in the controller, then in ROFAR in PPM ...

[Avior]

That way. All in black and white
https://ru.m.wikipedia.org/wiki/%D0%90%D0%B2%D1%82%D0%BE%D0%BC%D0%B0%D1%82_%D0%BF%D0%B5%D1%80%D0%B5%D0%BA%D0%BE%D1%81%D0%B0
And about rafar- give a confirmation link
Only not to the "Russian segment of the Internet", but to a trustworthy source

[K-612-O]

Well, if a wiki is trustworthy, then there is nothing to discuss.
Or do you think materials from closed conferences in Sarov or Kurchatnik will be in the public domain?
And by the way, the GaAsAl A3B5 is no less complicated material when applied to the construction of sensitive matrices and elements, but we also have enough supporters of the GaN approach, only until this technology becomes 10 times cheaper, it will not be suitable for mass and mass production.

[Avior]

I did not discuss with you.
Confused in their nicknames?
It happens.

The link has nothing to do with rofar

[ProkletyiPirat]

Quote: K-612-O

Well, if the wiki is trustworthy,

Well, Wikipedia is an encyclopedia-reference book formed by the whole society, and therefore highly dependent on the quality of the editor and the compiler of the articles (and they are amateurs, not gurus on salaries, but ordinary people sincerely believe the opposite ) Because you can meet on the same topic as a good article and complete nonsense. Here you don’t need to follow an example, on the link that I threw off, there is no delirium on distortions in autogyros, but there is a link from Avior. And the cause of the error lies in the fact that the editors of the article are not aircraft engineers and therefore did not understand the difference between blade swashplate и step change device, which I mentioned in a previous post, and both devices are almost identical in appearance, and both of them can be used and not be used by the same convertiplanes (like the same XC-142 doesn’t have either one or the other, although it is a convertiplane), so that the mistake of the editors is excusable ... (already edited the wiki article)

Quote: K-612-O

Or do you think materials from closed conferences in Sarov or Kurchatnik will be in the public domain?

Exactly! all works on this and similar topics relate to closed sections, military, commercial (industrial) or scientific is not so important. And not only and not so much in radar as in electronics, material science, nuclear / molecular physics, etc. Yes, even that which is not a secret is still not shared. For example, who needs diagrams of the mutual influence of the five parameters in the form of a book with rows of numbers? What if a book weighing a couple of tons? or excel table in hundreds of megabytes? or * .txt in thousands of megabytes, or even gigabytes?
Well, okay, you can translate this into simple articles, but which of the specialists and even amateur fans need simple stories about the "yellow sun" when it is scientifically proven that this is a lie, even if ordinary people who look at the yellow sun every day believe in it? (Not , well, the truth is, after all, many believe that it is yellow, and when you start proving the opposite, they will write it down in a psycho or "very smart, right ?!" or even worse) ...

[K-612-O]

China just does too. Someone did not see, and someone saw, at least the layout.

[Vrungeli]

Quote: K-612-O

As soon as these radars shine on the output power, they will be like a Christmas tree. Our approach towards ROFAR seems more promising.

Generally you are right ..

[Vrungeli]

The Military Review website requires authors in the news department. Requirements for applicants: literacy, responsibility, capacity for work, inexhaustible creative energy, experience in copywriting or journalism, the ability to quickly analyze the text and verify facts, write concisely and interestingly. The work is paid.

Here I think)))) There is no key word "citizen of Russia" and loving his homeland ..
I won’t come up clearly ..

[Grandfather]

Quote: Vrungeli

I won’t come up explicitly.

come up Meehan ... burn!

[Tochilka]

the supply of material is horrifying ... gallium nitiride radars. in Russian it should sound - the use of materials of microelectronics on a gallium nitride base. the substrate. on which microchips with specified characteristics will be received.

[Vadim237]

And with what Makar these radars are dangerous for us - the fact that they will be expensive in production is, of course, in Russia the same do not stand still in the development of radars.

[prior]

The development of LNA, phase inverters, logic based on gallium arsenide in the USSR was engaged in as early as the 80s.
And certain successes were achieved.
The carrier velocity in gallium arsenide is an order of magnitude higher than the carrier velocity in silicon. And this means that the speed of logical and high-frequency circuits is ten times higher.
All these developments and developments were ...., like the Soviet Union.
Instead of developing electronics and its individual areas in Russia, they preferred to "cut" the budget in Skolkovo ...
"The trouble is if the pastry starts to wear boots ...."

[sg7s]

Admins, where is the NEWS? "parade", "psheki", someone's mood .... Well, boring things ...