AhstradWe have developed a complete single&@ GPS &ver using 0.18~11 CMOS to mzl sevaal important requhements, such as small size, low power, low m and,h& Sensitivity for mobile GPS apphtions. Tnis is the first case in which a radio has been successfuUy comhii with a baseband p " r , such as Soc., in a GPS receiver. Ihe GPS chq, with a t o t a l size of 6.4x6.4q contains a 2.3x2.G" radio part, including RF fmnt e 4 P a , IF functions, and 5ooK gates of baseband logic, including mask ROM, SRAM and Dual Port SRAM[l]. It's fabricated using 0.18-um CMOS Technology with a MIM option and ope" fmm a 1.6 to 2. C-V power supply. Experk& results show a v q low power consumpfion os typically, 57mW for a fuUy fundod chip including baseband and a high sensitivity of -1SOdBm llmugh comunameasures for subsbate coupling noise fmm the digital the high sensitivdy was successfully achieved without any extanal LNA.

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We have developed a fully integrated 0.25um SiGe-BiCMOS transceiver with a power amplifier (PA), transmit / receive switch (T/R SW), orthogonal modulator / demodulator, received signal strength indicator (RSSI), and phase locked loop (PLL) for Dedicated Short Range Communications (DSRC) mobile terminals with Amplifier Shift Keying (ASK) and Pi/4shifted Quadrature Phase Shift Keying (Pi/4-QPSK) dual-mode modulation. Transmitter architecture is based on the sliding-IF topology using 4.6GHz VCO and a 1/4 divider. Receiver architecture is based on the fixed-IF super-heterodyne. For image spurious rejection in the transmitter, a passive band elimination filter (BEF) comprised of a differential inductor is implemented. The 3.1mm x 2.97mm die is packaged in 5.8mm x 5.8mm 48pin-VQFN. Index Terms -SiGe-BiCMOS, DSRC, ETC, ASK, Pi/4-QPSK, transceiver, power amplifier, T/R SW, RSSI.

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