Abstract
In a previous paper, a unified approach has been proposed for the analysis and design of single-and double-ridged waveguides by a magnetic field integral equation (MFIE) formulation [1]. This paper presents a continuing work with emphasis on the design of quadruple-ridged waveguides. The characteristics of square, circular and diagonal quadruple-ridged waveguides, including cutoff frequencies, attenuation, impedance and modal field distributions, are first time systematically analyzed and reported. Distinct to being in a single- or double-ridged waveguide, the fundamental mode in a quadruple-ridged waveguide has a cutoff frequency very close to that of the second-lowest mode, thus the natural single mode bandwidth is very small. However, when the second-lowest mode is effectively suppressed or not excited, a very wide bandwidth (6:1) can be achieved. This unique property, plus the capabilities of dual-polarization, high power, and low impedance, makes the quadruple-ridged waveguides well-suited to many antenna and microwave applications.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 2201-2207 |
| Number of pages | 7 |
| Journal | IEEE Transactions on Microwave Theory and Techniques |
| Volume | 42 |
| Issue number | 12 |
| DOIs | |
| State | Published - Dec 1994 |
ASJC Scopus subject areas
- Radiation
- Condensed Matter Physics
- Electrical and Electronic Engineering