This paper presents the design, construction, and testing of a 183-GHz FMCW transceiver module for wireless fuse applications. The transmitter consists of a square-triangle wave converter, a Ku-band VCO, a 91.5-GHz × 2 × 3 multiplying and amplifying chain, a 10-dB multi-hole directional coupler, and a 183-GHz frequency doubler. For the multiplying chain, the generated 91.5-GHz signal power is partly coupled out by the 10-dB coupler. The coupled output power is used as local oscillator (LO) signal to pump the 183-GHz subharmonic mixer (SHM). The receiver is cascaded by a 183-GHz SHM and a low-noise immediate frequency (IF) amplifier. The measured typical output power of the 183-GHz transceiver is 48 mW and the minimum noise temperature of the receiver is 620 K at 181 GHz. At 5-mm and 10-mm detection distance, the measured signal noise ratio (SNR) of transceiver IF signal is higher than 30 dB and 17 dB at 10 KHz bandwidth, respectively. The SNR is high enough for the following signal processing.

本文介绍了用于无线熔断器应用的183 GHz FMCW收发器模块的设计，构造和测试。该发射机包括一个方三角波转换器，一个Ku波段VCO，一个91.5 GHz×2×3倍增和放大链，一个10 dB的多孔定向耦合器和一个183 GHz倍频器。对于乘法链，所产生的91.5 GHz信号功率被10 dB耦合器部分耦合出去。耦合的输出功率用作本地振荡器（LO）信号，以泵浦183 GHz次谐波混频器（SHM）。接收器由183 GHz SHM和低噪声立即频率（IF）放大器级联。测得的183 GHz收发器的典型输出功率为48 mW，接收器的最低噪声温度在181 GHz时为620K。在5毫米和10毫米的检测距离下，在10 KHz带宽下，收发器IF信号的测量信号噪声比（SNR）分别高于30 dB和17 dB。对于随后的信号处理，SNR足够高。