A 440-540-GHz Subharmonic Mixer in 130-nm SiGe BiCMOS

A subharmonic mixer (SHM), which is measured within the RF range 450-500 GHz, is presented. The SHM uses a single-balanced topology with optimized parameters for gas spectroscopy at 440-540 GHz. The differential RF input of the mixer core is transformed to a single-ended input using a Marchand balun...

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Bibliographic Details
Published in:IEEE microwave and wireless components letters 2020-12, Vol.30 (12), p.1161-1164
Main Authors: Guner, Alper, Mausolf, Thomas, Wessel, Jan, Kissinger, Dietmar, Schmalz, Klaus
Format: Article
Language:English
Subjects:
Baluns
Conversion
Loss measurement
Mixers
Noise levels
Receiver
Receivers
SiGe
Silicon germanides
Silicon germanium
subharmonic mixer (SHM)
terahertz (THz)
Topology optimization
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Summary:A subharmonic mixer (SHM), which is measured within the RF range 450-500 GHz, is presented. The SHM uses a single-balanced topology with optimized parameters for gas spectroscopy at 440-540 GHz. The differential RF input of the mixer core is transformed to a single-ended input using a Marchand balun. The mixer is designed using a 130-nm SiGe BiCMOS technology. The mixer shows a measured conversion loss of 8.5 dB and an estimated noise figure of 33 dB at 480 GHz, using −1 dBm local oscillator (LO) power. The conversion loss was quantified to be in the range of 7.5-12.5 dB at 450-500 GHz.
ISSN:1531-1309
2771-957X
1558-1764
2771-9588
DOI:10.1109/LMWC.2020.3030315