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SiGe BiCMOS power amplifiers for 60GHz ISM band applications

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5 Author(s)
Renjing Pan ; Nanyang Technol. Univ., Singapore, Singapore ; Jiangmin Gu ; Kiat Seng Yeo ; Wei Meng Lim
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This paper describes design and analysis of two SiGe BiCMOS power amplifiers for 60GHz ISM band applications. The presented two-stage and three-stage power amplifier employ single-ended topology with transistors in common-emitter configuration, except that the three-stage power amplifier uses a cascade structure in the input stage for better input/output isolation. Drawn 37.8mw from 1.8V supply, the two-stage power amplifier is able to deliver 7.2dBm output power, 13.5dB power gain and 11.9% PAE at its 1dB compression point. A saturated power of 8.6dBm can be achieved. With a power consumption of 46.8mW from 1.8V supply, the three-stage power amplifier offers a power gain of 22.5dB, 5.5dBm output power and 7.6% PAE at its 1dB compression point. The two-stage and three-stage power amplifier occupy a silicon area of 880 × 580 μm2 and 1180 × 580 μm2, respectively. The simulation results show that the two designs can be fully adopted in 60GHz ISM band applications. The presented power amplifiers have a fT/fmax = 200/200 GHz and a break-down voltage BVCEO °f 1.9V, based on Tower Jazz Semiconductor's 0.18μm SiGe BiCMOS process.

Published in:

SoC Design Conference (ISOCC), 2011 International

Date of Conference:

17-18 Nov. 2011

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