Abstract
This paper presents the design of a new phase shifter using 65 nm CMOS technology, for its use in a receiver array of antennas operating at the K band (24 GHz). The desired phase shift is obtained by the operation of two main blocks: a quadrature all-pass filter (QAF) and a voltage gain amplifier (VGA). This topology uses dummy transistors to keep constant the input and output impedances. The phase shifter is digitally programmable using a 4-bit word. The root mean square error at 24 GHz is 3.55º for the phase and 0.78 dB for the gain.
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