Design and fabrication of a Ka-band voltage-controlled oscillator（VCO） using commercially available 1-μm GaAs heterojunction bipolar transistor technology is presented.A fully differential common-emitter configurat...Design and fabrication of a Ka-band voltage-controlled oscillator（VCO） using commercially available 1-μm GaAs heterojunction bipolar transistor technology is presented.A fully differential common-emitter configuration with a symmetric capacitance with a symmetric inductance tank structure is employed to reduce the phase noise of the VCO,and a novel π-feedback network is applied to compensate for the 180° phase shift.The on-wafer test shows that the VCO exhibits a phase noise of-96.47 dBc/Hz at a 1 MHz offset and presents a tuning range from 28.312 to 28.695 GHz.The overall dc current consumption of the VCO is 18 mA with a supply voltage of-6 V.The chip area of the VCO is 0.7×0.7 mm^2.展开更多
基金Project supported by the National Key Basic Research Program of China(No.2010CB327505)the Advanced Research Project(No.51308xxxx06)the Advanced Research Foundation(No.9140A08xxxx11DZ111)
文摘Design and fabrication of a Ka-band voltage-controlled oscillator（VCO） using commercially available 1-μm GaAs heterojunction bipolar transistor technology is presented.A fully differential common-emitter configuration with a symmetric capacitance with a symmetric inductance tank structure is employed to reduce the phase noise of the VCO,and a novel π-feedback network is applied to compensate for the 180° phase shift.The on-wafer test shows that the VCO exhibits a phase noise of-96.47 dBc/Hz at a 1 MHz offset and presents a tuning range from 28.312 to 28.695 GHz.The overall dc current consumption of the VCO is 18 mA with a supply voltage of-6 V.The chip area of the VCO is 0.7×0.7 mm^2.
