Single-Chip Multi-Mode Receiver for GSM900, DCS1800, PCS1900, and WCDMA

A single-chip, multi-mode receiver for GSM900, DCS1800, PCS1900, and UTRA/FDD WCDMA is introduced in this paper. Hence, the receiver operates at four different RF frequencies with two different baseband bandwidths. The presented chip, which consists of a low noise amplifier, downconversion mixers with on-chip LO I/Q-generation, channel selection filters, and programmable gain amplifiers, uses a direct conversion architecture. In spite of four receive bands, only four on-chip inductors are used in the single-ended low noise amplifier. The repeatable receiver IIP2 of over +42dBm is achieved with mixer linearization circuitry together with a baseband circuitry having approximately +100-dBV out-of-band IIP2. The noise figure of the SiGe BiCMOS receiver is less than 4.8dB in all GSM modes, and 3.5dB in WCDMA. The power consumption from a 2.7-V supply in all GSM modes and in WCDMA mode is 42mW and 50mW, respectively. The silicon area is 9.8mm including the bonding pads.