Un coupleur hybride accordable à ondes lentes CMOS FD-SOI 26-44 GHz 28 nm pour application 5G

Abstract

This paper presents a 26-44GHz multi-band 90° twisted hybrid coupler exhibiting low insertion loss for 5G application. Using a tunable 3-bit slow-wave architecture, the hybrid coupler offers eight operating modes allowing it to select the desired center frequency and covers a bandwidth of more than 51% while minimizing its losses. The hybrid coupler achieves an insertion loss lower than 2.2dB with a minimum of 1.45dB at 26GHz and a phase shift between the two output paths of 95 ± 5°. The circuit is implemented in a CMOS 28nm FD-SOI process and occupies 0.00567 mm 2 .