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A C-Band SiGe BiCMOS variable gain cascode amplifier (VGA) and reflection type phase shifter (RTPS) have been developed as a monolithic microwave integrated circuit (MMIC) with 45-dB gain control and 240° phase control with a SiGe varactor tuning range (Cmax/Cmin) of only 2.23. The proposed VGA combines the functionality of an amplifier and an attenuator. The RTPS uses a transformed single resonated...
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