A 2-Bit Differential Phase Shifter in 180-nm CMOS with 1.85 dB Insertion Loss for V-band Phased Array Antenna Application

This paper introduces a novel phase shifter (PS) utilizing a standard 180-nm CMOS process, distinguished by its differential 2-bit switch-type design for V-band phased array (PA) application. Due to its switch-type design, this PS exhibits the advantageous characteristic of using no power. The proposed PS utilizes a differential PS unit that incorporates both high-pass and low-pass states to significantly reduce the inductor values achieving a compact dimension of <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$700\times 750\mu m^{2}$</tex>. The floating body terminal transistor-based 2-bit PS has been introduced resulting in the lowest average insertion loss (IL) of < 1.85 dB for the frequency range 57.18-61.92 GHz.