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A low power dual-band multi-mode RF front-end for GNSS applications

Zhang Hao, Li Zhiqun and Wang Zhigong

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Abstract: A CMOS dual-band multi-mode RF front-end for the global navigation satellite system receivers of all GPS, Bei-Dou, Galileo and Glonass systems is presented. It consists of a reconfigurable low noise amplifier (LNA), a broadband active balun, a high linearity mixer and a bandgap reference (BGR) circuit. The effect of the input parasitic capacitance on the input impedance of the inductively degenerated common source LNA is analyzed in detail. By using two different LC networks at the input port and the switched capacitor at the output port, the LNA can work at two different frequency bands (1.2 GHz and 1.5 GHz) under low power consumption. The active balun uses a hybrid-connection structure to achieve high bandwidth. The mixer uses the multiple gated transistors technique to acquire a high linearity under low power consumption but does not deteriorate other performances. The measurement results of the proposed front-end achieve a noise figure of 2.1/2.0 dB, a gain of 33.9/33.8 dB and an input 1-dB compression point of 0/1 dBm at 1227.6/1575.42 MHz. The power consumption is about 16 mW under a 1.8 V power supply.

Key words: dual-band, multi-mode, electrostatic discharge (ESD), low-noise amplifier (LNA), active balun, high linearity, mixer, front-end, GNSS多模式静电放电保护低噪声放大器有源单转双高线性度混频器前端全球导航卫星系统

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    Received: 18 August 2015 Revised: 28 June 2010 Online: Published: 01 November 2010

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      Zhang Hao, Li Zhiqun, Wang Zhigong. A low power dual-band multi-mode RF front-end for GNSS applications[J]. Journal of Semiconductors, 2010, 31(11): 115008. doi: 10.1088/1674-4926/31/11/115008 Zhang H, Li Z Q, Wang Z G. A low power dual-band multi-mode RF front-end for GNSS applications[J]. J. Semicond., 2010, 31(11): 115008. doi: 10.1088/1674-4926/31/11/115008.Export: BibTex EndNote
      Citation:
      Zhang Hao, Li Zhiqun, Wang Zhigong. A low power dual-band multi-mode RF front-end for GNSS applications[J]. Journal of Semiconductors, 2010, 31(11): 115008. doi: 10.1088/1674-4926/31/11/115008

      Zhang H, Li Z Q, Wang Z G. A low power dual-band multi-mode RF front-end for GNSS applications[J]. J. Semicond., 2010, 31(11): 115008. doi: 10.1088/1674-4926/31/11/115008.
      Export: BibTex EndNote

      A low power dual-band multi-mode RF front-end for GNSS applications

      doi: 10.1088/1674-4926/31/11/115008
      • Received Date: 2015-08-18
      • Accepted Date: 2010-04-15
      • Revised Date: 2010-06-28
      • Published Date: 2010-10-31

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