Ka波段一体化收发信机设计

Integration of the Ka-band Transceiver

Ka波段一体化收发信机是无线通信系统中的重要电路,它对整个系统的噪声系数,灵敏度等关键指标起决定性作用。文中对Ka波段一体化收发信机的工作原理进行了阐述,同时给出了整机功能实现框图,分析了接收通道单元、本振单元、发射通道单元和电源控制单元共4个单元的设计方案,并给出了仿真结果与测试结果。试验结果表明,Ka波段一体化收发信机接收机噪声系数≤2.2 dB、增益≥60 dB、输入输出驻波、相位噪声杂散、镜像抑制等指标均满足技术要求。发射机1 dB压缩点功率≥30 dBm,增益≥50 dB,三阶交调,杂波抑制等均满足实用技术要求,并根据测试结果对Ka波段一体化收发信机的部分技术指标提出了进一步优化的方案。

The integration of the Ka-band transceiver has significant effect on the system noise factor, sensitivi-ty, and other key indicators of the wireless communication system circuit. The working principles of the integrated Ka-band transceiver with the overall block diagram given. A detailed analysis is made of design of the receiver chan-nel unit, the local oscillator unit, emission channel unit, and power control unit and both simulation results and test results are provided. The results show that with a noise factor ≤ 2. 2 dB, gain ≥ 60 dB, the input and output standing wave, the phase noise spurious image rejection and other indicators of the integrated Ka-band transceiver all meet the technical requirements ; with the transmitter 1 dB compression point power ≥ 30 dBm and gain ≥ 50 dB, the TOI, clutter suppression also satisfy the technical requirements. And in accordance with the test results, part of the technical indicators of the integrated Ka-band transceiver are optimized and improved.