MFIE ANALYSIS AND DESIGN OF RIDGED WAVE-GUIDES

This paper presents a unified approach for the analysis and design of ridged waveguides by a magnetic field integral equation (MFIE) formula tion. The MFIE approach allows accurate and complete solution via a si mple numerical implementation of pulse basis functions. The emphasis o f the paper is oriented to the design of ridged waveguides for applica tions in microwave components and systems, rather than to details of n umerical algorithms. Erroneous bandwidth estimates due to neglect of t he TE(11) mode in previous works have been corrected; and various usef ul design curves on cutoff frequency, bandwidth, attenuation, and wave guide impedance are provided. The proposed theory is verified by compa rison to exact closed-form solutions and other published results.