After three days of closed-door talks, the two sides have been deciding that Kaiyang Semiconductor will accept the first batch of 50 technicians from the Soviet Union to visit and study.

And these 50 people also have requirements, they must be drawn from the relevant units of the semiconductor and electronics industry in the Soviet Union, and the number of technical personnel from the same unit cannot exceed five or more, which is the most basic requirement.

After the closed-door talks, the two sides entered the second round of the summit forum to understand each other in the fields of software development and semiconductor wireless communication, and enhance mutual trust in technology between the two sides.

Meng Huaiying was finally able to spare time at this time, before she was immersed in the design of CMOS radio frequency chips, after three years of hard work, this is the initial solution to the problems of CMOS radio frequency chips.

The design of the RF chip used in the Chinese pager has been completely frozen and is being prepared to be delivered to the process department for the design of the product batch production process.

The influence of CMOS RF chips and CMOS optical sensors is roughly the same, and they are both technologies that can make a huge difference in a certain industry.

......

However, not everyone is optimistic about CMOS RF chips, at least in the delegation from the Soviet Union, there is a big man from the Moscow State Design Institute of Special Engineering, who specializes in wireless communications, and is currently in the top echelon of the world.

The world's first to invent the wireless telephone was not actually an American, as early as 1957, the Soviet engineer Leonid Kupriyanovich invented the ЛК-1 mobile phone.

In 1958, Leonid Kupriyanovich further improved the mobile phone, reducing the weight of the device from 3 kg to 500 grams (including batteries) and reducing the size of two cigarette packs to make calls anywhere in the city and any landline. By the middle of the 60s, Kupriyanovich's mobile phone was able to work effectively at a range of 200 km.

The Soviet Union's mass-produced mobile communication device, called "Altai", won a gold medal at the Brussels World Expo, and by 1970, the "Altai" system had been popularized in more than 30 cities, and it was indeed much stronger than the Americans.

There was a huge market for wireless communications in the country, and the Soviet Union was at the forefront of the world in the field of mobile phones, and people were qualified to ask questions.

"This lady, since you are engaged in the research and development of RF chips, and also mentioned that you want to use RF chips mainly to serve the wireless communication market, then I have a question that I am very puzzled about, how do you solve the problem that the power of CMOS RF chips is too low?"

Mao Zi spoke very directly, directly mentioning the most difficult problem to solve at present, and this is also an international problem.

Just as Professor Bai Siwen encountered the problem of dark current noise in the process of developing CMOS optical sensors, Professor Bai later cleverly solved it through a series of process designs, and finally launched a cost-effective CMOS optical sensor, which has established the status of an academic leader in one fell swoop.

Nowadays, Meng Huaiying's development of CMOS RF chips also encounters an inherent defect recognized by the academic community: too low power.

"The inherent problem of developing RF chips based on CMOS process is that the power is too small, and it really cannot be compared with gallium arsenide RF chips of the same period, which is currently the top problem in front of the world's scientific research interfaces, but our team has successfully developed a CMOS hybrid structure, which can solve the problem of too little power, so that it can initially meet the needs of low- and medium-power microwave RF. ”

The so-called CMOS hybrid structure, in fact, is the SiGe BiCMOS process, the full name in Chinese: silicon germanium bipolar - complementary metal oxide semiconductor, this thing is relatively barely acceptable in terms of power, and also perfectly inherits the CMOS process process, the cost is low enough, is a very good semiconductor RF process technology.

The performance advantage of SiGe BiCMOS process products is that the cost is low, and the power is relatively good, and even in the era of phased array radar explosion after 2000, some criminals are shoddy, in order to reduce costs, they use SiGe BiCMOS process T/R components to manufacture phased array radar.

Well, this is just a joke, T/R components made with SiGe BiCMOS process have low power consumption, low cost, and high integration, and are widely used in T/R component miniaturization and cost control, among which X-band phased array radar is the most valuable.

The T/R component of the SiGe BiCMOS process is not only suitable for X-band phased array air-space warning radar, but also for the Ka-band T/R component because of its high integration and small size, so it is used in the active radar seeker.

The so-called active radar seeker, the difference is between the AIM-7 Sparrow family of the United States and the AIM-120 Amram, the former because of the technological level of the seeker research and development era, can not accommodate the radar transmitter and receiver, even if it is reluctantly launched, this seeker can only be used on the AIM-54 in the end.

It was not until the advent of solid-state electronics and integrated circuits that radar components could be expected to be miniaturized, and the transmission and reception of radar waves in air-to-air missiles could be carried out in a single way, and this is the role of the active radar seeker.

The U.S. imperialists have a miniaturized active radar seeker, so they have created an artifact like the AIM-120, while the Republic can only tinker with the semi-active radar seeker improved from the AIM-7 family: the Thunderbolt 11.

There is a huge gap between these two types of missiles, and to say that this generation difference is probably about the same as between the third-generation aircraft and the fourth-generation stealth aircraft.

So....

Sometimes, the gap between military and civilian is really small, Meng Huaiying originally only came up with the SiGe BiCMOS process in order to achieve the high power of CMOS RF chips, but she did not expect that the technology she made has a very broad military prospect.

At the time of the success of Meng Huaiying's SiGe BiCMOS process, because the RF chip was tested in the microwave anechoic chamber of the 607 Institute at that time, after the results came out, the gods of the 607 Institute were keenly aware of its military value, and even the component team had begun to develop a phased array active radar seeker based on this technology.

In the development history of active radar seeker, it is actually not a one-step direct entry into the era of phased array radar.

The active radar seeker in the nineties was not a phased array system, but was a miniaturization of the traditional "machine scan-flat slot antenna" radar, including the American AIM-120 and the European Meteor.

Phased array active radar seeker, which was only raised after 2000, at this time the gallium arsenide T/R component miniaturization gradually matured, and it was the first small Japan to eat crabs, they developed in 2002 AAM-4B medium-range bomb on the phased array active seeker.

AAM-4B uses an active phased array active seeker, which can improve the detection range, anti-jamming, and detection ability of some radar stealth targets is also not bad, which is even faster than his beautiful father.

Now in the early 90s, the 607 Institute was about to prepare for the launch of the phased array radar active seeker, and Wang Zhengguo could also say: You should be happy.

The reason why the upper plane did not begin to have an active phased array radar head until after 2000 is because the early "machine scan-flat slot antenna" active seeker was developed enough to be mature, after all, it was the path proved by the American imperialist AIM-120, and later generations are also vying to follow suit.

Another point is that the miniaturization of gallium arsenide T/R components did not gradually mature until after 2000, and the cost must be controlled, otherwise how can it be used in single-use products such as air-to-air missiles.

As for now, with Meng Huaiying's proposal of the SiGe BiCMOS process, the two problems of production cost and miniaturization have been solved at one time, and the only disadvantage is that the power is still not as good as that of gallium arsenide T/R modules.

However, many problems have to be viewed in two, if the power is not compared with the gallium arsenide T/R module, and compared with the AIM-120 and Meteor of the same period, which use the "machine scan-plate slot antenna" seeker, the power of the two is actually not much different.

At present, the country has just made up the course of semi-active radar seeker, and the technology of active radar seeker has not been thought about at all, let alone looking for technical references from elsewhere.

The 607 has accumulated technology on the phased array radar, and now it is just time to find a more suitable new semiconductor process to produce T/R components suitable for the missile seeker, so why can't it just take the phased route?

With the continuous improvement of domestic semiconductor processing accuracy, the T/R module manufactured by SiGe BiCMOS process will further increase the power, even if it cannot be compared with the active radar seeker using gallium arsenide T/R module, as long as it can be the same as the same period of "machine scan-plate slot antenna", and the cost of T/R components manufactured by SiGe BiCMOS process can also be effectively controlled.

As long as the performance of the products can be comparable to the international level at the same time, and the price is not more expensive than them, as for what technical route is adopted, does it matter too much?

The Thunderbolt-11 missile was snatched away by the Modu Space Bureau, a space port unit, and since then, the medium-range missile project has been cut off within the aviation system, and if the 607 can take the lead in making an active radar seeker, I believe that with the courage of the aviation port, it must not be fully supported immediately, and the medium-range air-to-air missile market must be recaptured, after all, the most powerful air-to-air missile development force in China is still in the aviation port.

As for the Modu Space Agency, it is just a project that happened to take advantage of the introduction of Italian technology from the Thunderbolt 11 project, at most it is a halfway home, and the ability to produce air-to-air missiles and the development of air-to-air missiles are completely different concepts.

According to what 607 said, they have joined forces with the 014 Air-to-Air Missile Research Institute, and the two sides plan to start pre-research on the next generation of medium-range air-to-air missile projects, preparing to get a big guy that can confront the American-made AIM120 to come out, and completely cut off the evil idea of the magic capital aerospace mouth to stick its claws into the field of air-to-air missiles.

Although Meng Huaiying vaguely guessed that the 607 Institute would use the SiGe BiCMOS process technology for the military industry after obtaining it, he still copied and transferred a copy of the process data to the 607 Institute and obtained the 15 million yuan technology introduction fund promised by the 607 Institute.

There is no way, now the 607 civilian project is on fire, and the performance of the computer motherboard supporting Yaoguang Electronics is also good, the price is fair, and the annual profit is hundreds of millions.

With the first income, the CMOS RF chip project department can be said to be elated, Meng Huaiying in addition to the 500,000 reward for the R&D team, the rest of the funds are once again invested in the project scientific research.