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SiGe transformer matched power amplifier for operation at millimeter-wave frequencies

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4 Author(s)
Pfeiffer, U.R. ; IBM T.J. Watson Res. Center, Yorktown Heights, NY, USA ; Goren, D. ; Floyd, B.A. ; Reynolds, S.K.

In this paper, a transformer matched power amplifier for operation at millimeter-wave frequencies is presented. The SiGe single-stage push-pull amplifier uses a stacked transformer above a ground shield for output matching. The millimeter-wave transformer has a high coupling factor k = 0.8 and provides a very compact circuit layout. At 61.5 GHz the class-AB biased amplifier achieves a power gain of 12 dB with 8.5 dBm output power at a 1 dB compression. The saturated output power was measured up to Psat = 14 dBm with a maximum PAE of 4.2%.

Published in:

Solid-State Circuits Conference, 2005. ESSCIRC 2005. Proceedings of the 31st European

Date of Conference:

12-16 Sept. 2005