Matching network design for passive intermodulation distortion reduction

Author

Christianson, Andrew ; Henrie, J. ; Chappell, William

Author_Institution

Purdue Univ., West Lafayette, IN, USA

fYear

2013

fDate

7-13 July 2013

Firstpage

2247

Lastpage

2248

Abstract

A method for designing matching networks to reduce the distortion created by nonlinear passive components interfacing with antennas is presented. Coaxial connectors produce passive intermodulation distortion based on the amount of current flowing through them. By increasing the input impedance at the connector using impedance transformations, current, and thereby passive intermodulation distortion, can be reduced. A model is developed which allows designers to understand the relationship between impedance and distortion. Experimentally a reduction greater than 20 dB in passive intermodulation distortion is shown using a λ/4 matching network to transform the input impedance at the passive intermodulation source from 50Ω to 285Ω, while minimally affecting the linear transmission properties of the connection.

Keywords

impedance matching; intermodulation distortion; passive networks; coaxial connectors; impedance matching; impedance transformations; linear transmission properties; matching network design; nonlinear passive component interface; passive intermodulation distortion reduction; Connectors; Current measurement; Distortion measurement; Impedance; Intermodulation distortion; Transmission line measurements; Communication system nonlinearities; impedance matching; nonlinear distortion; passive intermodulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium (APSURSI), 2013 IEEE

Conference_Location

Orlando, FL

ISSN

1522-3965

Print_ISBN

978-1-4673-5315-1

Type

conf

DOI

10.1109/APS.2013.6711782

Filename

6711782