A 2.7 V 900 MHz/1.9 GHz dual-band transceiver IC for digital wireless communication

A 2.7 V 900 MHz/1.9 GHz dual-band transceiver IC consisting of receive, transmit and local oscillator sections is presented. The transmit section achieves an unwanted sideband-suppression of -43 dBc, LO leakage of -59 dBc, 3/sup rd/ order spurious rejection of -70 dBc. The transmit output noise level is -165 dBc/Hz at a 20 MHz offset from the carrier. The on-chip VHF oscillator has a phase noise level of -106 dBc/Hz at 100 kHz offset when operating at 800 MHz. The receive section has 36 dB of gain with 36 dB of gain range in 4 steps.