A wideband CMOS variable gain low noise amplifier（VGLNA） based on a single-to-differential（S2D） stage and resistive attenuator is presented for TV tuner applications.Detailed analysis of input matching,noise figur...A wideband CMOS variable gain low noise amplifier（VGLNA） based on a single-to-differential（S2D） stage and resistive attenuator is presented for TV tuner applications.Detailed analysis of input matching,noise figure（NF） and linearity for S2D is given.A highly linear passive resistive attenuator is proposed to provide 6 dB attenuation and input matching for each gain stage.The chip was fabricated by a 0.18μm 1P6M CMOS process, and the measurements show that the VGLNA covers a gain range over 36.4 dB and achieves a maximum gain of 21.3 dB,a minimum NF of 3.0 dB,an IIP3 of 0.9 dBm and an IIP2 of 26.3 dBm at high gain mode with a power consumption less than 10 mA from a 1.8 V supply.展开更多
基金Project supported by the National Science Funding of China(No.60876019)the National S&T Major Project of China(No.2009ZX0131- 002-003-02)+2 种基金the Shanghai Rising-Star Program,China(No.09QA 1400300)the National Scientists and Engineers Service for Enterprise Program,China(No.2009GJC00046)the ASIC State-Key Laboratory Funding,China(No.09MS007)
文摘A wideband CMOS variable gain low noise amplifier（VGLNA） based on a single-to-differential（S2D） stage and resistive attenuator is presented for TV tuner applications.Detailed analysis of input matching,noise figure（NF） and linearity for S2D is given.A highly linear passive resistive attenuator is proposed to provide 6 dB attenuation and input matching for each gain stage.The chip was fabricated by a 0.18μm 1P6M CMOS process, and the measurements show that the VGLNA covers a gain range over 36.4 dB and achieves a maximum gain of 21.3 dB,a minimum NF of 3.0 dB,an IIP3 of 0.9 dBm and an IIP2 of 26.3 dBm at high gain mode with a power consumption less than 10 mA from a 1.8 V supply.
