Conference article

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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Published in: GigaHertz 2003. Proceedings from the Seventh Symposium

Linköping Electronic Conference Proceedings 8:49, p.

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Published: 2003-11-06

ISBN:

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

Abstract

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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References

1. Aravind Loke and Fazal Ali; “Direct Conversion Radio for Digital Mobile Phones Design Issues; Status; and Trends.” IEEE Transactions on Microwave Theory and Techniques; vol. 50; no. 11; November 2002.

2. Richard Svitek et al; “An Active SiGe Sub-Harmonic Direct-Conversion Receiver Front-End Design for 5-6 GHz Band Applications”

3. A. A. Abidi; “Direct-Conversion Radio Transceivers for Digital Communications”; IEEE Journal of Solid-State Circuits; vol. 30; no. 12; December 1995

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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