Journal ArticleDOI
Analysis and design of quadruple-ridged waveguides
Reads0
Chats0
TLDR
In this article, the characteristics of square, circular and diagonal quadruple-ridged waveguides, including cutoff frequencies, attenuation, impedance and modal field distributions, are for the first time systematically analyzed and reported.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 (see ibid., vol. 41, no. 11, p. 1965-71, Nov. 1993). 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 for the first time systematically analysed 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. >read more
Citations
More filters
Patent
Diagonal dual-polarized broadband horn antenna
TL;DR: The diagonal dual-polarized broadband horn antenna (DPI-BSH) as mentioned in this paper uses diagonal line ridges placed in the corners of the aperture of the DPI to focus the frequencies emitted from a DPI into a common direction.
Journal ArticleDOI
Circular Quadruple-Ridged Flared Horn Achieving Near-Constant Beamwidth Over Multioctave Bandwidth: Design and Measurements
TL;DR: In this article, a quadruple-ridged flared horn achieving almost constant beamwidth over 6:1 bandwidth is presented, which is the first demonstration of a wideband feed for radio telescopes which is capable of accommodating different reflector antenna optics.
Journal ArticleDOI
Characteristics of generalized rectangular and circular ridge waveguides
Yu Rong,Kawthar A. Zaki +1 more
TL;DR: In this paper, generalized ridge waveguides are analyzed using the mode-matching method and the characteristic impedance, attenuation, and power-handling capability of several types of ridge rectangular waveguide and ridge circular waveguide are presented, which are useful in the design of many microwave components and subsystems.
Journal ArticleDOI
A new dual-polarized broadband horn antenna
Zhongxiang Shen,Chao Feng +1 more
TL;DR: In this article, a dual-polarized broadband horn antenna with a coaxial line to quadruple-ridged waveguide transition was proposed to improve the return loss performance of the horn antenna.
Journal ArticleDOI
Quad Ridged Horn Antenna for UWB Applications
TL;DR: In this paper, a dual-polarized ultra wideband horn antenna with a coaxial line to quadruple-ridged waveguide transition and a new technique for tapering the flared section of the horn is introduced to improve the return loss and matching of the impedance, respectively.
References
More filters
Journal ArticleDOI
MFIE analysis and design of ridged waveguides
TL;DR: In this article, a unified approach for the analysis and design of ridged waveguides by a magnetic held integral equation (MFIE) formulation is presented, which allows accurate and complete solution via a simple numerical implementation of pulse basis functions.
Journal ArticleDOI
Modal Characteristics of Quadruple-Ridged Circular and Square Waveguides (Short Papers)
TL;DR: In this article, the modal characteristics of quadruple-ridged circular and square waveguides were investigated and the cutoff frequencies for the first few important modes and cutoff frequencies were determined.
Journal ArticleDOI
Quadruple ridge-loaded circular waveguide phased arrays
TL;DR: In this paper, an equivalent circuit representation of quadruple ridge-loaded waveguide arrays is presented, which is useful for synthesis and optimization of array performance, and the validity of this technique has been verified by simulator measurement.
Journal ArticleDOI
Cutoff wavenumbers of ridged circular waveguides via Ritz-Galerkin approach
TL;DR: In this paper, the cutoff numbers of double and quadruple-ridged circular waveguides were computed using the Ritz-Galerkin method. But the cutoff number for the quadruple waveguide was not computed for the TE11 and TE31 modes.