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A CMOS IF transceiver with 90 dB linear control VGA for IMT-2000 application
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- Authors
- Yonk-Sik Youn, Jang-Hong Choi, Min-Hyung Cho, Seon-Ho Han, Mun-Yang Park
- Issue Date
- 2003-06
- Citation
- Symposium on VLSI Circuits 2003, pp.131-134
- Language
- English
- Type
- Conference Paper
- Abstract
- 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-band application. With a single 3.0 V power supply, the VGAs and mixers consume 16 mA and 6 mA, respectively.
- KSP Keywords
- 250 MHz, CMOS Technology, Dual-band, Gain Control, IMT-2000, control method, dynamic range, linear control, power supply