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IEICE TRANSACTIONS on Electronics

A Direct Conversion Receiver for W-CDMA Reducing Current Consumption to 31 mA

Hiroshi YOSHIDA, Takehiko TOYODA, Makoto ARAI, Ryuichi FUJIMOTO, Toshiya MITOMO, Masato ISHII, Rui ITO, Tadashi ARAI, Tetsuro ITAKURA, Hiroshi TSURUMI

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Summary :

A direct conversion receiver for W-CDMA, which consumes extremely low power, is presented. The receiver consists of a low-noise amplifier (LNA) IC, a receiver IC and other passive components such as an RF-SAW (Surface Acoustic Wave) filter. The receiver IC includes a quadrature demodulator (QDEM) with a local oscillator (LO) divider, low-pass filters (LPFs) for channel selection, variable gain amplifiers (VGAs) with dynamic range of 80 dB, and a fractional-N synthesizer. The power consumption for the entire receiver chain was only 30.8 mA at supply voltage of 2.7 V.

Publication
IEICE TRANSACTIONS on Electronics Vol.E88-C No.6 pp.1271-1274
Publication Date
2005/06/01
Publicized
Online ISSN
DOI
10.1093/ietele/e88-c.6.1271
Type of Manuscript
Special Section LETTER (Special Section on Analog Circuit and Device Technologies)
Category
RF

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