A CMOS IF transceiver with 90 dB linear control VGA for IMT-2000 application

  title={A CMOS IF transceiver with 90 dB linear control VGA for IMT-2000 application},
  author={Yonk-Sik Youn and Jang-Hong Choi and M S Cho and Seon-Ho Han and Mun-Yang Park},
  journal={2003 Symposium on VLSI Circuits. Digest of Technical Papers (IEEE Cat. No.03CH37408)},
A prototype IF transceiver has been integrated in 0.35 /spl mu/m CMOS technology. The chip includes VGAs and mixers for IMT-2000. The VGAs are controlled continuously in linear dB by using a proposed quasi-exponential gain control method. Measurements show that both VGAs have over 90 dB dynamic range and 9.5 dB NF in receiver. The -3 dB frequencies of the receiver and transmitter are 250 MHz and 430 MHz, respectively. Thus, the transceiver can adapt to PCS as well as IMT-2000 for potential dual… CONTINUE READING
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