A Compact Design of W-Band High-Pass Waveguide Filter Using Genetic Algorithms and Full-Wave Finite Element Analysis

An-Shyi LIU  Ruey-Beei WU  Yi-Cheng LIN 

Publication
IEICE TRANSACTIONS on Electronics  Vol.E88-C  No.8  pp.1764-1771
Publication Date: 2005/08/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
rectangular waveguide filter,  Chebyshev synthesis,  genetic algorithms,  constrained Quasi-Newton method,  Lamarckian evolution,  full-wave finite element analysis, 

Full Text: PDF(1.2MB)

Summary: 
This paper proposes an efficient two-phase optimization approach for a compact W-band double-plane stepped rectangular waveguide filter design, which combines genetic algorithms (GAs) with the simplified transmission-line model and full-wave analysis. Being more efficient and robust than the gradient-based method, the approach can lead to a compact waveguide filter design. Numerical results show that the resultant waveguide filter design with 4 sections (total length 19.6 mm) is sufficient to meet the design goal and provides comparable performance to that with 8 sections (total length 35.6 mm) by the Chebyshev synthesis approach. Based on the present approach, nineteen compact high-pass waveguide filters have been implemented and measured at the W-band with satisfactory performance.