A SiGe 24 GHz zero-IF downconverter

Peter Lindberg
Uppsala University, Sweden

Erik öjefors
Uppsala University, Sweden

Anders Rydberg
Uppsala University, Sweden

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Ingår i: GigaHertz 2003. Proceedings from the Seventh Symposium

Linköping Electronic Conference Proceedings 8:49, s.

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Publicerad: 2003-11-06


ISSN: 1650-3686 (tryckt), 1650-3740 (online)


This paper describes the design of the main building blocks of a 24 GHz zero-IF downconverter: a voltage controlled oscillator (VCO) and a sub-harmonic mixer (SHM). The circuits have been monolithically implemented in a SiGe HBT process production line using low-resistivity (20Ocm) substrate. Measured results are presented; showing the feasibility of direct conversion receiver (DCR) implementations for the 24 GHz ISM band using a low-cost standard process.


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4. D. A. Johnson; Sanjay Raman; “A Packaged SiGe x2 Sub-Harmonic Mixer for U-NII Band Applications”; IEEE BCTM 10.2; p.159-162.

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