With the rapid rise of 5G millimeter wave communications and broadband low-track satellite communications, millimeter waves have an unprecedented development, and it is expected to dominate the market in the next few years.
The millimeter wave brings a large bandwidth and high rate. The maximum bandwidth used in the 4G LTE cellular system based on the SUB-6GHz band is 100MHz. The data rate does not exceed 1Gbps; in the millimeter wave band, the maximum bandwidth of the mobile application can be used is 400MHz. The data rate is up to 10Gbps or even more.
Demand is always the biggest motivation of innovation, and the improvement of new materials, new technologies and new processes, the technical problems of the integrated circuit components of the millimeter wave are quickly overcome, and millimeters will usher in large-scale applications in the 5G era. In the satellite communication field, the mm wave active phase-controlled array antenna is compared with the traditional moving medium, there is no bulky servo tracking system, the beam speed is fast, the direction is controllable, and the satellite can be tracked in real time, and the weight is light, can be performed Mass production; millimeter wave active phase control array antenna does not contain the movable components, the reliability is excellent, even if the minority unit in the array invals, the overall performance of the antenna will not be affected, the terminal of the integrated millimeter wave active phase control antenna is One of the important development directions of future millimeter wave satellite communications.
Millimeter wave active antenna domestic and foreign development status
Advantages of active phase-controlled array antennas are the use of microwave integrated methods, integrated phase shifters, filters, attenuators, amplifiers, and low noise and other chips in the chip, implementation of miniaturization, lightweight, beam pointing High precision and a certain beam of beam-based petals; the disadvantage is that the cost of the phased array is high, but with the development of MMIC technology, the cost will be significantly reduced.
Development status of foreign millimeter wave active phase control antenna
The development of existing active phase control antennas abroad is more popular in domestic, widely used in radar, satellite communications.
01
Phasor has developed a low cross section of KA bands, electronically controlled phased array antennas, which can be applied to mobile applications in aviation, sea and land. PHASOR technology uses a dedicated integrated circuit (ASIC) microchip with electron beam-made functions, which form a unit with a very small patch antenna, and more than 500 units are distributed on the radio frequency optimized panel, which constitutes a Phasor core. The foundation of the module. The core module can be combined into a variety of sizes and configurations to build PHASOR's phased array antenna, which has unprecedented ability. The unique design of PHASOR will be able to produce a strong shape, a height of only 1 to 2 inches, with a light, small area, high precision, and a wide range of broadband speeds that exceed 10 Mbps with very high gain.
Figure 1: Phasor developed the phased array
02
The Kymeta antenna uses super material to form holographic beams, which means that software instead of mechanical components can dynamically adjust the antenna pointing, which greatly reduces the power consumption of the antenna. The antenna uses electronic RF beam points to control, electronic polarization selection, and angle control, satellite automatic identification, and tracking, can be widely used in mobile communication.
Figure 2: Search of Kymeta R & D
03
On June 21, 2018, the C-COM satellite system company uses a 4 × 4 transceiver component module, successfully tested its 16 × 16 sub-array phased array antenna, this test is two low earth track satellites before the end of 2018 The demo is ready. In May 2016, C-COM successfully tested its first 4x4 ka band phased array module based on its patented phase shifter technology. 4x4 KA Band Intelligent Antenna Module adopts a low-cost multilayer planar circuit based on innovative architecture, with high flexibility, small thickness, modular, consistency, and strength. The initial results are exciting, even if several antenna elements are closed, the modules can still provide acceptable radiation pattern without significantly reducing performance. The modularity of the antenna and the adaptability of the surface make it suitable for carriers such as automotive, vessels, trains, bus and aircraft. This new system and its expansion capabilities on higher millimeter wave bands also apply it in the future of telecommunications such as 5G and millimeters.
Figure 3: 16x16 phased array developed by C-COM
04
AAC Singapore Wireless Technology Centre developed integrated millimeter wave phase control array antennas for 5G band RF, using a horn antenna array and microstructure network feed, simulation antenna gain 24dB, power network insertion loss 1.8dB, the phase-controlled array antenna is produced with a 6-layer PCB, as shown in Figure 4.
Figure 4: 64 yuan phased array of AAC Technology
05
Anokiwave is a millimeter wave phase control array industry leader. It uses the self-studying chip to design the millimeter wave 256 yuan can reconstruct all silicon phase control array, DC + 12V power supply, and weighs about 3kg to achieve EIRP>1 kW.
Figure 5: ANOKIWAVE developed millimeter wave phase control array
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