A 1-V, Low-Power CMOS LNA for Ultra-wideband Receivers

Po Yang Chang, Hui I. Wu, Christina Jou

Research output: Contribution to conferencePaperpeer-review


A 1-V, low-power ultra-wideband (UWB) low-noise amplifier (LNA) for IEEE 802.153a is implemented in TSMC 0.18-mu m. mixed signal/RF CMOS process. With only 1V bias voltage, the LNA can achieve a measured flat power gain (S21) of 10dB from 2.5 to 8.5 GHz while consuming only 7.25 mW. The minimum noise figure is 3.46dB. A simplified Chebyshev filter is used to achieve an input broadband matching of a measured S11 < -7.1dB from 3.1 to 10.6 GHz. An output-matching buffer is designed specially to match for high gain at upper frequency, the measured S22 is <-12.5dB from 3.1 GHz to 10.6 GHz. Furthermore, the high frequency electromagnetic effect of the transmission lines is considered in this circuit.
Original languageAmerican English
Number of pages4
StatePublished - 11 Dec 2007
EventAsia-Pacific Microwave Conference, APMC 2007 - Bangkok, Thailand
Duration: 11 Dec 200714 Dec 2007


ConferenceAsia-Pacific Microwave Conference, APMC 2007


  • LNA
  • CMOS
  • Ultra wide-band

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