Bott, JonathanJonathanBottStarke, DavidDavidStarkeVogelsang, FlorianFlorianVogelsangSchöpfel, JanJanSchöpfelBredendiek, ChristianChristianBredendiekAufinger, KlausKlausAufingerPohl, NilsNilsPohl2024-09-022024-09-022024https://publica.fraunhofer.de/handle/publica/47434610.1109/LMWT.2024.33890612-s2.0-85191336358This letter introduces a silicon-germanium (SiGe)-based subharmonic mixer (SHM) optimized for THz radar applications, operating at a center frequency of 360 GHz with a 3-dB bandwidth of 72 GHz. This mixer is a key component in a fully integrated receiver, featuring a wideband 90-GHz voltage-controlled oscillator (VCO), a frequency doubler stage, and power amplifier (PA) stages. The mixer exhibits a conversion gain of -6.1 dB while maintaining an excellent input compression point of >4 dBm, accompanied by a simulated noise figure (NF) of 24.8 dB. Moreover, a current consumption of only 8.6 mA underlines the energy efficiency.enopen accessB12HFCBiCMOSfrequency doublerfrequency multiplierfrequency-modulated continuous wave (FMCW)Lange couplerpower amplifier (PA)radarreceiversilicon-germanium (SiGe)subharmonic mixer (SHM)voltage-controlled oscillator (VCO)widebandjournal article