Domestic millimeter wave active phase control antenna development status
Domestic due to core chips and new processes, the millimeter wave phased array will start late, and now most of them are in arguments or pre-research phases, they can see the reports.
01
The phased array antenna prototype used in China Electric Well, the phased array antenna of the 5G millimeter wave communication and millimeter wave data chain, which adopts the 64-membered microstrip array antenna form, and the performance indicator is not announced.
Figure 1: China Electric Research Millimeter Wave Phase Control Array Antenna Principle
02
Chengdu has a millimeter wave phase control array developed by a silicon-based multi-channel chip, a vertical line polarization, transmitting EIRP ≥ DBM (method), receive G / T value ≥ -5db / k (method), using the maximum duty cycle More than 30%.
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Figure 2: Millimeter wave phase control array antenna model developed by a company in Chengdu
03
The millimeter wave phase control array antenna developed by a company in Beijing, using high-density integrated integrated design, realizing the construction of the shortest transceiver link of multi-channel antennas; use multi-interface integrated wave control modules, built-in multi-group beam direction quick adjustment data, easy Realize the rapid use of multiple environments; configure multi-function interface cable, flexible and external equipment to build synchronous control systems, easy to develop and test wireless links. The antenna can achieve a two-dimensional ± 60 degree beam scan range, which transmits RIRP is greater than 50 dBm, which is suitable for 5G millimeter wave communications.
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Figure 3: Millimeter wave phase control array antenna developed by a company in Beijing
Runxin Company pre-studied silicon base millimeter wave chip
At present, Runxin's pre-developed millimeter silicon-based chip will integrate power amplifiers, digital phase shifters, digital attenuators, drive amplifiers, low noise amplifiers, filters, and power networks, etc., the transmission and reception chip can support phased array scanning All functions can form a phase array antenna front end with the millimeter wave planar array antenna.
Transmit channel chip
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Transmission channel chip principle block diagram
1 frequency: 27.5-30GHz;
2 Size: <6 * 6 * 0.5 mm
3 P1DB: 17DBM;
4 support left-handed, right rotation, line polarization
5 G>22db per channel;
6 gain flatness: 2dB;
7 efficiency. 1882.15% @ p1db;
⑧ 5bit digital phase:
⑨ 5bit digital attenuator:
⑩ vswr<1.8: 1
⑪ SPI data control interface
⑫ reserved power, temperature detection port
Receiving channel chip
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Receive channel chip principle block diagram
1 frequency: 17.7-21.2GHz;
2 Size: <6 * 6 * 0.5 mm;
3 nf<3.0db;
4 G>22dB;
5 support left-handed, right rotation, line polarization;
6 gain flatness: 2dB;
7 efficiency. 1882.15%;
8 5bit digital shift;
⑨ 5bit digital attenuation;
⑩ VSWR<1.8: 1;
⑪ SPI control interface data;
⑫ reserved power, temperature detection port.
Future Prospects
Future, active millimeter wave antenna for 5G and satellite communications in the coming years will achieve an unprecedented mass production, that process which is more conducive to mass production it?
Based on the GaAS or GaN process, IC is located in the antenna array. Although EIRP is very high, the reception performance caused by loss and self-calibration is poor, and the cost is difficult to decrease; the millimeter wave based on the full silicon multi-functional chip is Although the source antenna is limited, it is easy to achieve large-scale production, and the manufacturing cost is low, which is an inevitable trend of the millimeter wave phase control antenna.
To sum up, look to the future, millimeter-wave phased antenna will move toward the direction of development of broadband, conformal and metamaterials direction:
▶ Broadband ultra-wideband array antenna can be widely used in multi-band satellite communication systems, support multi-beam use, reduce the number of antennas;
▶ antenna array, and other RF components integrated design platform, the antenna as part of a vector, to promote the antenna to miniaturization, integration, low-profile, chip direction.
▶ Super material technology has been artificially designed for some composite microstructure, so that the material has some electromagnetic wave responding characteristics that exceeds natural materials, and the antenna is developed into small, conformally, and stealth.
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