A new active RF phase shifter using variable gain, drain Voltage controlled PHEMTs:A 2.4-GHz ISM implementation
作者： S.A. Mitilineos , G.K. Mitropoulos , C.N. Capsalis
关键词:
摘要: Phase shifters operating at RF bands are an essential component of phased and adaptive arrays circuits. In this letter, active phase shifter is proposed, using vector summing in-phase a quad-phase replica the incoming signal. The proposed scheme was designed implemented Wilkinson power combiner/divider, branch line hybrid coupler single-stage variable gain amplifiers (VGAs), achieving continuous shift within range [0/spl deg/, 90/spl deg/]. manufactured prototype suitable for WLAN operations in 2.4-GHz ISM band. Details design experimental results presented.
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