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《Microelectronics》 2016-01
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Design of an Analog Vector-Sum Phase Shifter with Low Gain Variation

TIAN Xuenong;LIU Chuanyang;SUN Yunfei;College of Electronic &Information Engineering,Suzhou University of Science and Technology;Jiangsu Marine Resources Development Research Institute,Huaihai Institute of Technology;  
A new feedback circuit used in the gain control block of the analog vector-sum phase shifter was proposed to reduce the gain fluctuation.The schematic and layout were designed based on SMIC 0.18μm CMOS process.The circuit could operate in the frequency range between 2GHz and 3GHz.The size of the layout was 0.7mm×0.64 mm.The simulation results showed that the insertion loss was less than 8dB,the gain variation was less than 0.7dB,and the input 1dB compression point P1 dBwas 2dBm at 2.45 GHz.The gain variation of the circuit was smaller than the published results so far.
【Fund】: 国家自然科学基金青年基金资助项目(61401297);; 苏州科技学院科研基金资助项目(XKZ201413);; 江苏省自然科学基金青年基金资助项目(BK20140283)
【CateGory Index】: TN623
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