A lumped Elements varactor-loaded Transmission-Line phase shifter at 60GHz

Author

Zhou, Chunyuan ; Qian, He ; Yu, Zhiping

Author_Institution

Dept. of Microelectron., Tsinghua Univ., Beijing, China

fYear

2010

Firstpage

656

Lastpage

658

Abstract

The design flow of a lumped Elements varactor-loaded Transmission-Line phase shifter (VLTL) is illustrated and a 60 GHz phase shifter of this kind is implemented in IBM 90nm CMOS process in this paper. The proposed VLTL is area-saving, occupying only 937um × 110um as it uses inductors instead of long transmission lines. This phase shifter is digitally controlled and need no extra DACs to realize phase tuning range. It is an absolutely passive network and consumes nearly zero DC power. The simulation results verify that this phase shifter can achieve a 180° phase control range with a phase resolution of 22.1°, an insertion loss of 2.5 to 10.9 dB. The return loss |S11|,|S22| are better than 16 dB.

Keywords

CMOS integrated circuits; digital-analogue conversion; inductors; phase control; phase shifters; transmission lines; varactors; CMOS process; DAC; frequency 60 GHz; inductors; lumped elements varactor; phase control; transmission-line phase shifter; Arrays; Capacitance; Inductors; Insertion loss; Phase control; Phase shifters; Radio frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State and Integrated Circuit Technology (ICSICT), 2010 10th IEEE International Conference on

Conference_Location

Shanghai

Print_ISBN

978-1-4244-5797-7

Type

conf

DOI

10.1109/ICSICT.2010.5667293

Filename

5667293