L波段机载收发信机设计

针对机载设备体积小、重量轻、功耗小等要求,采用射频电路小型一体化技术、高效率功率放大器技术、集成化快速AGC技术等,设计了一种L波段收发分时工作体制的收发信机。该收发信机外形尺寸为65 mm×65 mm×20 mm,重量仅130 g,功耗＜6 W。其发射通道输出功率≥6 W,三阶互调≤-18 dBc;接收通道增益达到85 dB,噪声系数≤3.0 dB,动态范围≥65 dB。通过飞行试验验证,收发信机性能稳定,具有较强的实用性。

Design of a L-band Airborne Transceiver

According to the request of small dimension,light weight and low power consumption for airborne equipment,an L-band transceiver working in TR time division system is designed by using RF circuit miniaturization and integration technology,high-efficiency power amplifier technology,and integrated rapid AGC technology.The appearance is 65 mm×65 mm×20 mm in size,130 g in weight,and less than 6 W in power consumption.The output power of transmitting channel is≥6 W,and the third-order intermodulation is≤-18 dBc.The gain of receiving channel is up to 85 dB,the noise figure is≤3 dB,and the dynamic range is≥65 dB.The result shows that the transceiver has stable performance and very strong practicability in flight test verification.