Wideband VHF and UHF RF Front-End Receiver for DVB-H Application

  • Park, Joon-Hong (School of Electrical and Electronic Engineering, Chung-Ang University) ;
  • Kim, Sun-Youl (School of Electrical and Electronic Engineering, Chung-Ang University) ;
  • Ho, Min-Hye (School of Electrical and Electronic Engineering, Chung-Ang University) ;
  • Baek, Dong-Hyun (School of Electrical Engineering, Chung-Ang University)
  • Received : 2010.04.03
  • Accepted : 2011.10.10
  • Published : 2012.01.01


This paper presents a wideband and low-noise direct conversion front-end receiver supporting VHF and UHFbands simultaneously. The receiver iscomposed of a low-noise amplifier (LNA), a down conversion quadrature mixer, and a frequency divider by 2. The cascode configuration with the resistor feedback is exploited in the LNA to achieve a wide operating bandwidth. Four gainstep modesare employed using a switched resistor bank and a capacitor bank in the signal path to cope with wide dynamic input power range. The verticalbipolar junction transistors are used as the switching elements in the mixer to reduce 1/f noise corner frequency. The proposed front-end receiver fabricated in 0.18 ${\mu}m$ CMOS technology shows very low minimum noise figureof 1.8 dB and third order input intercept pointof -12dBm inthe high-gain mode of 26.5 dBmeasured at 500 MHz.The proposed receiverconsumeslow current of 20 mA from a 1.8 V power supply.


Supported by : Chung-Ang University


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