关键词: 频率综合器, 超宽带, 双核压控振荡器, CMOS工艺

Abstract: Based on the application of ultra-wide band radio frequency (RF) transceiver circuit, an ultra-wide band, fully integrated and reconfigurable frequency synthesizer with orthogonal output is designed, which is suitable for the up-conversion and down-conversion processing of RF signals in the RF reception and RF transmition in the working frequency ranged from 25 MHz to 12 GHz. Using a charge pump frequency synthesizer as the overall implementation architecture, a dual-core voltage controlled oscillator (VCO) to cover the frequency range, and a multistage cascade local oscillator signal generation technology to generate local oscillator signal, the frequency synthesizer applied to multiband integrated communication, radar radio frequency hopping and software-defined radio is realized. The CMOS process is used for design simulation and tape-out, and the final die size is 0.658 mm×1.2 mm. Test results show that the phase noise at 12 GHz is less than －85 dBc/Hz@ 100 kHz offset, and the typical total power consumption of the circuit is 203 mW.

Key words: frequencysynthesizer, ultra-wide band, dual-core VCO, CMOS process