A novel tunable impedance transmission line for mm-waves applications

Author

Torres, Florent ; Begueret, Jean-Baptiste ; Martin, Nicolas ; Belot, Didier ; Taris, Thierry

Author_Institution

IMS Lab., Univ. of Bordeaux, Talence, France

fYear

2015

fDate

7-10 June 2015

Firstpage

1

Lastpage

4

Abstract

In this paper a novel tunable transmission line operating in V-band (57 GHz to 66 GHz) is presented. Designed in a 130 nm BiCMOS technology, the proposed structure explores ground plane switching to perform impedance tuning. It exhibits a 16 Ohms shift over characteristic impedance - equivalent to 30% of tuning range - with a Q-factor higher than 16 thanks to a shielding used in slow-waves transmission lines. Using this topology versus a classical 50 Ohms coplanar waveguide into a reconfigurable pi-type matching network with tunable stubs, it allows to cover around 100% more of impedances in the Smith Chart with a “2 dimensional” tuning.

Keywords

BiCMOS integrated circuits; Q-factor; bipolar MIMIC; transmission lines; 2 dimensional tuning; BiCMOS technology; Q-factor; Smith chart; V-band; characteristic impedance; frequency 57 GHz to 66 GHz; ground plane switching; mm-waves applications; reconfigurable pi-type matching network; resistance 16 ohm; size 130 nm; slow-waves transmission lines; tunable impedance transmission line; Coplanar waveguides; Impedance; Network topology; Q-factor; Strips; Topology; Tuning; Impedance tuning; mmW tunable matching network; variable impedance transmission line;

fLanguage

English

Publisher

ieee

Conference_Titel

New Circuits and Systems Conference (NEWCAS), 2015 IEEE 13th International

Conference_Location

Grenoble

Type

conf

DOI

10.1109/NEWCAS.2015.7182035

Filename

7182035