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Title: A 3.1-8.0 GHz MB-OFDM UWB transceiver in 0.18μm CMOS
Authors: Zheng, Hui
Lou, Shuzuo
Lu, Dongtian
Shen, Cheng
Chan, Tat Fu
Luong, Howard Cam
Keywords: OFDM modulation
Frequency synthesizers
Low noise amplifiers
Ultra wideband technology
Issue Date: 2007
Citation: Proceedings IEEE Custom Integrated Circuits Conference. CICC 2007. 16-19 September 2007, San Jose, CA, U.S.A. p. 651-654
Abstract: This paper presents a complete CMOS dual-conversion zero-IF2 transceiver for 9-band MB-OFDM UWB systems from 3.1 to 8.0 GHz. The transceiver integrates all building blocks including a variable-gain wideband LNA, a single mixer for both RF down and up conversions in RX and TX, a fast-settling frequency synthesizer, and IQ ADCs and DACs. Fabricated in a standard 0.18-μm CMOS process, the receiver measures maximum S11 of -13dB, maximum NF of 8.25 dB, in-band IIP3 of better than -13.7 dBm, and variable gain from 25.3 to 84.0 dB. IQ path gain and phase mismatch of the receiver chain are measured to be 0.8 dB and 4° respectively. The transmitter achieves a minimum output P-1dB of -8.2 dBm, sideband rejection of better than -42.2 dBc, and LO leakage of smaller than -46.5 dBc.
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