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5.8 GHz RF Transceiver LSI Including On-Chip Matching Circuits

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6 Author(s)
Minoru Nagata ; Semiconductor Company, Toshiba Corporation, 2-5-1 Kasama Sakae-ku, Yokohama 247-8585, Japan ; Hideaki Masuoka ; Shin-ichi Fukase ; Makoto Kikuta
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A fully integrated 5.8 GHz band transceiver LSI for electronic toll collection systems has been developed. The transceiver consists of LNA, down-converter, ASK detector, ASK modulator, voltage controlled oscillator, and AS-fractional-N PLL. Since internal RF matching circuitry for input terminal of LNA and output terminal of ASK modulator were also integrated, almost no external matching devices are necessary with VSWR<1.25. SBM for ASK modulator and VGA for LO amplitude control were adopted to avoid local leakage and to keep modulation linearity, result, obtained modulation index were over 95%. The infin-shape resonant coil was implemented for VCO to diminish magnetic coupling. Manufacturing process was SiGe BiCMOS process with 47 GHz cut-off frequency

Published in:

2006 Bipolar/BiCMOS Circuits and Technology Meeting

Date of Conference:

8-10 Oct. 2006