Design and Application of T / R Module of Active Phased Array Radar Based on C-band

The application of C-band T/ R module in the active phased array radar is described in this paper. On the basis of analyzing the technical index of T/ R module, the realization way of each unit circuit is determined. Low noise amplifier uses microstrip circuit design; 3 dB ring bridge uses microstrip circuit design; completes the design of receiving channel and transmitting channel of T/ R module on the basis of each unit circuit. In the frequency range of 5. 35 GHz ~ 5. 95 GHz, the gain of receiving of C-band T/ R module is more than 21 dB, the noise figure is lower than 3. 5 dB, the maximum error of phase shifting accuracy is less than 10. 69°, and the maximum error of attenuation accuracy is less than 2. 60 dB. The output power of the transmitting branch is higher than 40. 22 dBm, the power gain is higher than 35. 33 dB, and the output power fluctuation is less than ± 0. 5 dB, which meets the requirements of the target.