A novel type of constant impedance traveling wave phase shifter for InP-based MMICs

Author

Kremer, R. ; Redlich, S. ; Brings, L. ; Jager, D.

Author_Institution

Gerhard-Mercator-Univ., Duisburg,, Germany

fYear

1996

fDate

17-19 June 1996

Firstpage

197

Lastpage

200

Abstract

The paper presents a novel type of externally controllable phase shifter based on periodic coplanar transmission lines consisting of Schottky contact (SCCPL) and coplanar sections on a passive substrate. The modeling of the devices is carried out by utilizing a four-pole representation of the underlying /spl pi/-sections. An optimized InP-InGaAs-InAlAs layer structure for the SCCPL is developed providing an external electronic control. Measured phase shifts up to 60/spl deg//mm at 20 GHz with a line impedance of 48/spl plusmn/1.2 /spl Omega/ agree well with theoretical calculations.

Keywords

III-V semiconductors; MMIC phase shifters; Schottky barriers; equivalent circuits; indium compounds; integrated circuit modelling; transmission line theory; /spl pi/-sections; 20 GHz; InP-InGaAs-InAlAs; InP-based MMICs; Schottky contact; constant impedance phase shifter; coplanar sections; external electronic control; four-pole representation; modeling; passive substrate; periodic coplanar transmission lines; traveling wave phase shifter; Capacitance; Coplanar transmission lines; Distributed parameter circuits; Impedance; Indium gallium arsenide; MMICs; Microwave devices; Phase shifters; Schottky barriers; Substrates;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave and Millimeter-Wave Monolithic Circuits Symposium, 1996. Digest of Papers., IEEE 1996

Conference_Location

San Francisco, CA, USA

Print_ISBN

0-7803-3360-8

Type

conf

DOI

10.1109/MCS.1996.506335

Filename

506335