Design of microwave filters by inverse scattering

Author

Roberts, Paul P. ; Town, Graham E.

Author_Institution

Australia Telescope Nat. Facility, CSIRO, Epping, NSW, Australia

Volume

43

Issue

4

fYear

1995

fDate

4/1/1995 12:00:00 AM

Firstpage

739

Lastpage

743

Abstract

A new design method for planar microwave filters based on the theory of inverse scattering is presented. The method results in filters with a continuously changing profile, for example a nonuniform microstrip line with continuously varying width. Filters designed by this method are shown to possess some distinct advantages in realization and performance over other common techniques. The design method is presented in detail, and efficient numerical algorithms to solve the design equations that arise are discussed. A wideband 4 pole Chebyshev bandpass filter was designed, constructed, and tested, to prove the design method. This is the first demonstration of a microwave filter designed using inverse scattering

Keywords

Chebyshev filters; band-pass filters; distributed parameter networks; electromagnetic wave scattering; inverse problems; linear network synthesis; microwave filters; passive filters; continuously changing profile; design method; inverse scattering; microwave filters; nonuniform microstrip line; numerical algorithms; wideband 4 pole Chebyshev bandpass filter; Algorithm design and analysis; Band pass filters; Design methodology; Equations; Filtering theory; Inverse problems; Microstrip filters; Microwave filters; Microwave theory and techniques; Wideband;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.375219

Filename

375219