A frequency synthesizer for the ultra-wide band（UWB） group #1 is proposed.The synthesizer uses a phaselocked loop（PLL） and single-sideband（SSB） mixers to generate the three center frequencies of the first band g...A frequency synthesizer for the ultra-wide band（UWB） group #1 is proposed.The synthesizer uses a phaselocked loop（PLL） and single-sideband（SSB） mixers to generate the three center frequencies of the first band group by mixing 4224 MHz with±264 MHz and 792 MHz,respectively.A novel multi-QSSB mixer is designed to combine the function of frequency selection and frequency conversion for low power and high linearity.The synthesizer is fabricated in Jazz 0.18-μm RF CMOS technology.The measured reference spur is as low as-69 dBc and the maximum spur is the LO leakage of-32 dBc.A low phase noise of—110 dBc/Hz @ 1 MHz offset and an integrated phase noise of 1.86°are achieved.The hopping time between different bands is less than 1.8 ns.The synthesizer consumes 30 mA from a 1.8V supply.展开更多
基金Project supported by the National 11th Five-Year Plan,China(No.51308020403)the Science and Technology Commission of Shanghai Municipality,China(No.08706200700)the National High Technology Research and Development of China(No.2009AA01Z261).
文摘A frequency synthesizer for the ultra-wide band（UWB） group #1 is proposed.The synthesizer uses a phaselocked loop（PLL） and single-sideband（SSB） mixers to generate the three center frequencies of the first band group by mixing 4224 MHz with±264 MHz and 792 MHz,respectively.A novel multi-QSSB mixer is designed to combine the function of frequency selection and frequency conversion for low power and high linearity.The synthesizer is fabricated in Jazz 0.18-μm RF CMOS technology.The measured reference spur is as low as-69 dBc and the maximum spur is the LO leakage of-32 dBc.A low phase noise of—110 dBc/Hz @ 1 MHz offset and an integrated phase noise of 1.86°are achieved.The hopping time between different bands is less than 1.8 ns.The synthesizer consumes 30 mA from a 1.8V supply.
