A 1V 12mW 2GHz RF Receiver with 49dB Image Rejection in CMOS/SIMOX

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  • CMOS/SIMOX技術によるイメージ抑圧比49dBの1V, 12mW, 2GHz動作RF受信機
  • CMOS SIMOX ギジュツ ニ ヨル イメージ ヨクアツヒ 49dB ノ 1V 12mW 2GHz ドウサ RF ジュシンキ

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Description

A 1-V 2-GHz receiver that exhibits an image rejection of 49 decibels is described. It consists of a low-noise amplifier, a quadrature mixer and on-chip polyphase filters, and was fabricated by 0.2-μm fully depleted CMOS/SIMOX technology. The quadrature mixer employs an LC-tuned folded structure with a common RF input for I and Q channels, and this enables 1-V operation and suppresses phase errors in LO signals. The current source of single-to-balance converter at the mixer input consists of a transistor and an LC tank in a cascode configuration. This enhances its output impedance and improves its common-mode-rejection ratio. The chip consumes 12 mW with 1-V power supply. The receiver provides an NF of 10 dB with an IIP3 of -15.7 dBm.

Journal

  • ITE Technical Report

    ITE Technical Report 25.55 (0), 35-40, 2001

    The Institute of Image Information and Television Engineers

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