基于幅相检测与移频相消融合的载波泄漏抑制技术

针对单天线小型无线电收发信机载波泄漏问题，提出了一种基于幅相检测与移频相消融合的载波泄漏抑制方法.该方法采用微带电路自适应闭环载波泄漏幅相检测技术和直流频偏移频相消技术相融合，对单天线无线电收发信机载波泄漏和直流频偏进行抑制.无线电收发信机发射中心频率为4.3 GHz时，ADS软件仿真与样机测试结果表明，载波泄漏抑制后输出波形无明显失真，消除了载波泄漏直流频偏分量，接收机输出功率为-79 dBm，载波泄漏对消比可达56，降低了载波泄漏对单天线收发信机影响，提高了接收机的灵敏度和检测概率. 

Carrier-Leakage Suppression Techniques Based on Mixing Magnitude-Phase Inspection and Frequency Shift Cancellation

In view of the carrier leakage problem for small single-antenna radio transceiver, the carrier-leakage suppression techniques were proposed based on mixing magnitude-phase shift with frequency shift cancellation. Carrier leakage and DC frequency was cancellated by the carrier-leakage suppression integration techniques, which was merged together the adaptive closed-loop offset technology and frequency offset cancellation technology. The ADS software experimental results and testing indicate that the output power is -79 dBm and the carrier leakage cancellation is up to 56 with 4.3 GHz transmitting center frequency. The carrier leak on single-antenna transceiver is reduced without obvious distortion in the output wave shape and the DC offset component is eliminated. The receiver sensitivity and detection probability are improved by the carrier-leakage suppression techniques.