Research And Design Of V-band Phased Array Front-ends

The millimeter wave band has received a lot of attention in the military field for the needs of modern weapon systems such as "situational awareness,long-range strike,and fine strike" based on its broad band,strong anti-interference,and short wavelength for miniaturization.In the future,millimeter wave phased arrays will be developed towards higher frequency bands,smaller size,lower cost and higher integration.At present,domestic research in millimeter wave technology is limited by the level of technology,the development is still relatively slow.In the military field,most of the mainstream research bands of phased arrays are in Ku/Ka band and below,and less research is done for higher bands such as E band,V band,W band,etc.With the continuous breakthrough of millimeter-wave devices and system architecture in the civil field,millimeter-wave phased arrays for military applications will achieve rapid development.An active phased array transceiver front-end architecture for V-band applications is presented and the key structures are simulated and designed for millimeter wave communication applications.Firstly,a brick-and-tile hybrid structure is designed with a counter-ridge fin structure,which has a return loss of more than 33 d B at 60 GHz and a transmission coefficient better than-0.06 d B in the whole V-band to realize the transition of the microstrip waveguide;secondly,a non-standard waveguide structure is designed to reduce the waveguide size from the standard 19 mm to 7.5 mm,which largely reduces the front-end height;finally,a front-end architecture is designed for the requirements of millimeter-wave communication related indexes.Finally,the transceiver link,control circuit and power supply circuit are designed for the requirements of millimeter wave communication.The test shows that the spurious suppression of the transmitter and receiver signals is above 40 d Bc,the EIRP is 43 d Bm,and the beam scanning range is±50°.