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A differential low-voltage high gain current-mode integrated RF receiver front-end

Wang Chunhua, Ma Minglin, Sun Jingru, Du Sichun, Guo Xiaorong and He Haizhen

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Abstract: A differential low-voltage high gain current-mode integrated RF front end for an 802.11b WLAN is proposed. It contains a differential transconductance low noise amplifier (Gm-LNA) and a differential current-mode down converted mixer. The single terminal of the Gm-LNA contains just one MOS transistor, two capacitors and two inductors. The gate--source shunt capacitors, Cx1 and Cx2, can not only reduce the effects of gate--source Cgs on resonance frequency and input-matching impedance, but they also enable the gate inductance Lg1,2 to be selected at a very small value. The current-mode mixer is composed of four switched current mirrors. Adjusting the ratio of the drain channel sizes of the switched current mirrors can increase the gain of the mixer and accordingly increase the gain of RF receiver front-end. The RF front-end operates under 1 V supply voltage. The receiver RFIC was fabricated using a chartered 0.18 μm CMOS process. The integrated RF receiver front-end has a measured power conversion gain of 17.48 dB and an input referred third-order intercept point (IIP3) of --7.02 dBm. The total noise figure is 4.5 dB and the power is only 14 mW by post-simulations.

Key words: low voltage

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    Received: 18 August 2015 Revised: 22 October 2010 Online: Published: 01 February 2011

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      Wang Chunhua, Ma Minglin, Sun Jingru, Du Sichun, Guo Xiaorong, He Haizhen. A differential low-voltage high gain current-mode integrated RF receiver front-end[J]. Journal of Semiconductors, 2011, 32(2): 025009. doi: 10.1088/1674-4926/32/2/025009 Wang C H, Ma M L, Sun J R, Du S C, Guo X R, He H Z. A differential low-voltage high gain current-mode integrated RF receiver front-end[J]. J. Semicond., 2011, 32(2): 025009. doi: 10.1088/1674-4926/32/2/025009.Export: BibTex EndNote
      Citation:
      Wang Chunhua, Ma Minglin, Sun Jingru, Du Sichun, Guo Xiaorong, He Haizhen. A differential low-voltage high gain current-mode integrated RF receiver front-end[J]. Journal of Semiconductors, 2011, 32(2): 025009. doi: 10.1088/1674-4926/32/2/025009

      Wang C H, Ma M L, Sun J R, Du S C, Guo X R, He H Z. A differential low-voltage high gain current-mode integrated RF receiver front-end[J]. J. Semicond., 2011, 32(2): 025009. doi: 10.1088/1674-4926/32/2/025009.
      Export: BibTex EndNote

      A differential low-voltage high gain current-mode integrated RF receiver front-end

      doi: 10.1088/1674-4926/32/2/025009
      • Received Date: 2015-08-18
      • Accepted Date: 2010-09-06
      • Revised Date: 2010-10-22
      • Published Date: 2011-01-10

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