245 GHz subharmonic receiver in SiGe

A subharmonic receiver for 245 GHz spectroscopy sensor applications have been proposed. The receiver consists of a CB (common base) LNA, 2nd transconductance SHM (subharmonic mixer) and a 120 GHz push-push VCO with 1/64 divider. The receiver is fabricated in fT/fmax=300/500 GHz SiGe: C BiCMOS technology. Its measured single-ended gain is 14.3 dB at 245 GHz with tuning range of 15 GHz, and the single-side band noise figure is 19 dB. The input 1-dB compression point is at -24 dBm. The receiver dissipates a power of 200 mW.

[1]  K. Schmalz,et al.  245-GHz LNA, Mixer, and Subharmonic Receiver in SiGe Technology , 2012, IEEE Transactions on Microwave Theory and Techniques.

[2]  B. Heinemann,et al.  Half-Terahertz SiGe BiCMOS technology , 2012, 2012 IEEE 12th Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems.

[3]  Christoph Scheytt,et al.  A Subharmonic Receiver in SiGe Technology for 122$~$GHz Sensor Applications , 2010, IEEE Journal of Solid-State Circuits.

[4]  Bernd Heinemann,et al.  A 220GHz subharmonic receiver front end in a SiGe HBT technology , 2011, 2011 IEEE Radio Frequency Integrated Circuits Symposium.