A 335–407-GHz SiGe-Based Subharmonic Mixer Using a Fully Integrated LO Generation

Jonathan Bott,David Starke, Florian Vogelsang, Jan Schöpfel,Christian Bredendiek,Klaus Aufinger,Nils Pohl

IEEE Microwave and Wireless Technology Letters（2024）

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摘要

This 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.

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关键词

B12HFC,BiCMOS,frequency doubler,frequency multiplier,frequency-modulated continuous wave (FMCW),Lange coupler,power amplifier (PA),radar,receiver,silicon–germanium (SiGe),subharmonic mixer (SHM),voltage-controlled oscillator (VCO),wideband

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