A high-linearity down mixer with outstanding robust temperature tolerance for V-band applications is proposed in this paper.The mixer’s temperature robustness has been greatly enhanced by employing a negative tempera...A high-linearity down mixer with outstanding robust temperature tolerance for V-band applications is proposed in this paper.The mixer’s temperature robustness has been greatly enhanced by employing a negative temperature-compensation circuit(NTC)and a positive temperature-compensation circuit(PTC)in the transconductance(g_(m))stage and intermediate frequency(IF)output buffer,respectively.Benefiting from the active balun with enhanced g_(m)and emitter negative feedback technique,the linearity of the mixer has been significantly improved.For verification,a double-balanced V-band mixer is designed and implemented in a 130 nm SiGe BiCMOS process.Measured over the local oscillator(LO)bandwidth from 57 GHz to 63 GHz,the mixer demonstrates a peak conversion gain(CG)of−0.5 dB,a minimal noise figure(NF)of 11.5 dB,and an input 1 dB compression point(IP_(1 dB))of 4.8 dBm under an LO power of−3 dBm.Furthermore,the measurements of CG,NF,and IP_(1 dB)exhibit commendable consistency within the temperature range of−55℃to 85℃,with fluctuations of less than 0.8 dB,1 dB,and 1.2 dBm,respectively.From 57 GHz to 63 GHz,the measured LO-to-radio frequency(RF)isolation is better than 46 dB,the measured return loss at the RF port is>29 dB,and at the LO port it exceeds 12 dB.With a 2.5 V supply voltage,the mixer power consumption is 15.75 mW,18.5 mW,and 21 mW at temperatures of−55℃,25℃,and 85℃,respectively.Moreover,the mixer chip occupies a total silicon area of 0.56 mm2 including all testing pads.展开更多
An up-conversion mixer implemented in a 0.35μm SiGe BiCMOS technology for a double conversion cable TV tuner is described, The mixer converts the 100MHz to 1000MHz band to the Intermediate Frequency of 1GHz above. Th...An up-conversion mixer implemented in a 0.35μm SiGe BiCMOS technology for a double conversion cable TV tuner is described, The mixer converts the 100MHz to 1000MHz band to the Intermediate Frequency of 1GHz above. The mixer meets the linearity and noise figure requirements for a TV tuner. The noise figure （IF） of 19.2-17.5dB, ldB compression of 12.1dBm, and gain of-1-0.7dB in the 900MHz band are achieved at a supply voltage of 5V. The power consumption is 47mW.展开更多
基金supported by the National Key Research and Development Program of China(No.2023YFB3811503)the Zhejiang Provincial Natural Science Foundation of China(No.LQ23F040009)the State Key Laboratory of Millimeter Waves,Southeast University(No.K202316)。
文摘A high-linearity down mixer with outstanding robust temperature tolerance for V-band applications is proposed in this paper.The mixer’s temperature robustness has been greatly enhanced by employing a negative temperature-compensation circuit(NTC)and a positive temperature-compensation circuit(PTC)in the transconductance(g_(m))stage and intermediate frequency(IF)output buffer,respectively.Benefiting from the active balun with enhanced g_(m)and emitter negative feedback technique,the linearity of the mixer has been significantly improved.For verification,a double-balanced V-band mixer is designed and implemented in a 130 nm SiGe BiCMOS process.Measured over the local oscillator(LO)bandwidth from 57 GHz to 63 GHz,the mixer demonstrates a peak conversion gain(CG)of−0.5 dB,a minimal noise figure(NF)of 11.5 dB,and an input 1 dB compression point(IP_(1 dB))of 4.8 dBm under an LO power of−3 dBm.Furthermore,the measurements of CG,NF,and IP_(1 dB)exhibit commendable consistency within the temperature range of−55℃to 85℃,with fluctuations of less than 0.8 dB,1 dB,and 1.2 dBm,respectively.From 57 GHz to 63 GHz,the measured LO-to-radio frequency(RF)isolation is better than 46 dB,the measured return loss at the RF port is>29 dB,and at the LO port it exceeds 12 dB.With a 2.5 V supply voltage,the mixer power consumption is 15.75 mW,18.5 mW,and 21 mW at temperatures of−55℃,25℃,and 85℃,respectively.Moreover,the mixer chip occupies a total silicon area of 0.56 mm2 including all testing pads.
基金Supported by the National Natural Science Foundation of China (No.90207008).
文摘An up-conversion mixer implemented in a 0.35μm SiGe BiCMOS technology for a double conversion cable TV tuner is described, The mixer converts the 100MHz to 1000MHz band to the Intermediate Frequency of 1GHz above. The mixer meets the linearity and noise figure requirements for a TV tuner. The noise figure （IF） of 19.2-17.5dB, ldB compression of 12.1dBm, and gain of-1-0.7dB in the 900MHz band are achieved at a supply voltage of 5V. The power consumption is 47mW.
