A Wideband Compact 5-Bit Phase Shifter With Low Loss and RMS Errors for 5G Applications
Yen‐Heng Lin, Zuo‐Min Tsai
Abstract
This letter presents a differential 5-bit switch-type phase shifter (PS) that is based on a 65-nm CMOS process. This PS uses a new differential PS unit, which includes a high-pass state and a low-pass state. The strengths of this PS unit include low-phase error and low-amplitude error between two states, which can effectively improve the performance of the entire 5-bit PS. The fabricated 5-bit PS has a low average insertion loss of <8.0 dB, low root mean square (rms) phase error of <5.9°, and low rms amplitude error of <0.22 dB in 35–41.9 GHz. It also has a compact size of 0.125 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> .
Topics & Concepts
Phase shift moduleAmplitudePhase (matter)Insertion lossCMOSWidebandPhysics4-bitBit (key)Electronic engineeringElectrical engineeringComputer scienceMaterials scienceTopology (electrical circuits)OptoelectronicsEngineeringOpticsQuantum mechanicsComputer securityRadio Frequency Integrated Circuit DesignMillimeter-Wave Propagation and ModelingMicrowave Engineering and Waveguides