摘要
阐述了Ku波段雷达接收机的工作原理进行了阐述,并对设计方案与测试结果进行了分析。Ku波段接收机由低噪声变频单元、中频放大、本振和电源4个独立单元组成。对各单元电路的设计进行了分析,给出了元器件选型以及仿真结果。试验结果表明,Ku波段接收机的噪声系数≤1.0 dB、增益≥55 dB、输入输出驻波,相位噪声杂散,镜像抑制等指标均满足实用技术要求,并根据测试结果对Ku波段接收机部分指标提出了进一步优化的方法。
An important circuit in wireless communication system, the radar receiver＇s main role is to zoom in and processing of the echo reflected back to the radar after launch, and to filter the echo by obtaining the most useful echo and unwanted interference between the identification rate of the echo. The article describes the working princi- ple of the Ku-band radar receiver, and presents the design and test results analysis. The Ku-band receiver consists of the low-noise inverter unit, the IF amplifier unit, four independent units of the local oscillator unit and the power supply unit. A detailed analysis is made of the circuit design of each unit, the component selection and the simula- tion results. The results show that with a Ku-band receiver noise figure ≤ 1.0 dB and gain ≥ 55 dB, the input and output standing wave, the phase noise spurious and image rejection indicators meet the technical requirements. Fur- ther improvement of some indicators of the Ku-band receiver is proposed based on test results.
出处
《电子科技》
2013年第6期58-60,共3页
Electronic Science and Technology
