[48]

A 60GHz Frequency Down-Converter with Divided LO Output in an 80GHz SiGe HBT Technology

Gang Liu, A. Cagri Ulusoy, Andreas Trasser and Hermann Schumacher

This paper is to be presented at the coming Asia Pacific Microwave Conference ( www.apmc2010.org ; Dec. 7-10, 2010).

Abstract: A fully integrated 60 GHz frequency downconverter with divided LO output for external PLL is presented in this paper. The circuit is realized in a 0.8 μm SiGe HBT process with f _T /f _max of 80 GHz. It consists of a 60 GHz downconversion mixer, a VCO at half the LO frequency, a frequency doubler and a divide by 32 frequency divider. With the VCO tuned to 33.8 GHz, the down-converter achieves a conversion gain of 0 dB at 60 GHz input and a 3 dB IF bandwidth of 12 GHz. The input 1-dB compression point is around -5 dBm. The output power of the divided LO signal is approximately -3 dBm, the measured phase noise at 1 MHz offset is -117 dBc/Hz. The complete down-converter draws 136 mA from a 4 V supply.

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Publications Publications, alphabetical order Publications 2008 Publications 2009 Publications 2010 Publications 2011 ICC 2009 PR 01/2009 Final Presentation	[48] A 60GHz Frequency Down-Converter with Divided LO Output in an 80GHz SiGe HBT Technology Gang Liu, A. Cagri Ulusoy, Andreas Trasser and Hermann Schumacher This paper is to be presented at the coming Asia Pacific Microwave Conference ( www.apmc2010.org ; Dec. 7-10, 2010). Abstract: A fully integrated 60 GHz frequency downconverter with divided LO output for external PLL is presented in this paper. The circuit is realized in a 0.8 μm SiGe HBT process with f _T /f _max of 80 GHz. It consists of a 60 GHz downconversion mixer, a VCO at half the LO frequency, a frequency doubler and a divide by 32 frequency divider. With the VCO tuned to 33.8 GHz, the down-converter achieves a conversion gain of 0 dB at 60 GHz input and a 3 dB IF bandwidth of 12 GHz. The input 1-dB compression point is around -5 dBm. The output power of the divided LO signal is approximately -3 dBm, the measured phase noise at 1 MHz offset is -117 dBc/Hz. The complete down-converter draws 136 mA from a 4 V supply.