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This paper presents the first WWAN + WLAN integrated radio transceiver. The 0.18 /spl mu/m CMOS chip includes a fully integrated receiver, transmitter and frequency synthesizer. The device includes a direct conversion receiver that converts the RF signal to quadrature analog baseband while yielding a high IIP2 (> +45.0 dBm) and low LO radiation (<-100 dBm(More)
A 19 mW highly integrated GPS receiver with a ΣΔfractional-N synthesizer is presented in this paper. Fractional-N frequency synthesizer architecture was adopted in this work, to provide more degrees of freedom in the synthesizer design. A high linearity low noise amplifier (LNA) is integrated into the chip. The radio receiver chip was fabricated in a 0.18(More)
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