✦ LIBER ✦

Design of matched bends in rectangular waveguides by finite element method

✍ Scribed by Coccioli, R. ;Mongiardo, M. ;Pelosi, G. ;Ravanelli, R.

Publisher: John Wiley and Sons
Year: 1996
Tongue: English
Weight: 921 KB
Volume: 6
Category: Article
ISSN: 1050-1827
DOI: 10.1002/(sici)1522-6301(199611)6:6<391::aid-mmce2>3.0.co;2-t

No coin nor oath required. For personal study only.

✦ Synopsis

Waveguide bends of complex geometrical shape frequently occur in microwave systems. To make an accurate prediction of the bend's electrical performances it is useful to employ a general numerical algorithm, such as the finite element method (FEM), which is able to cope with complex geometries. However, since in common practice bends are manufactured either on the Eor H-plane, the FEM can be significantly simplified for these cases, thus enhancing its numerical efficiency. In this article, it is illustrated how the FEM can be simplified and it is shown, by means of several examples, how it can be applied to the case of a straight waveguide which is bent and clamped to obtain low return losses.

📜 SIMILAR VOLUMES

Optimization of bends in rectangular wav

Optimization of bends in rectangular waveguide by a finite-element genetic-algorithm procedure

✍ R. Coccioli; G. Pelosi; S. Selleri 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 166 KB 👁 2 views

We have reported the characterization of transitions be-Ž . tween the coplanar waveguide CPW inputroutput terminals and the microstrip traveling-wave electrode of polymer electrode-optic modulators. Results of RF loss measurements of the microstrip electrode of each candidate taper were reported alo

Analysis of electromagnetic waveguide be

Analysis of electromagnetic waveguide bends by three-dimensional finite element method with edge elements

✍ Hirayama, Koichi ;Hayashi, Yoshio ;Koshiba, Masanori 📂 Article 📅 1996 🏛 John Wiley and Sons 🌐 English ⚖ 736 KB

An approach based on the finite element method (FEM) with the rectangular-parallelepipd edge element is proposed for the analysis of electromagnetic waveguide bends. Here, to be permissible for analysis of various electromagnetic waveguides, the analytical relations in the uniform waveguide are cons

Analysis and design of mitered H-plane b

Analysis and design of mitered H-plane bends in rectangular waveguides by combining the mode-matching and port reflection coefficient methods

✍ Zhewang Ma; Taku Yamane; Eikichi Yamashita 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 747 KB

Creeping flow in rectangular ducts by fi

Creeping flow in rectangular ducts by finite element method

✍ P. N. Godbole 📂 Article 📅 1975 🏛 John Wiley and Sons 🌐 English ⚖ 216 KB 👁 1 views

Finite elements and evolution programs f

Finite elements and evolution programs for the CAD of broadband rectangular-waveguide H-plane matched loads

✍ F. J. Monge; J. Esteban; J. Zapata 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 324 KB

## Abstract A full‐wave CAD tool has been implemented for the design of __H__‐plane rectangular‐waveguide passive circuits. The software is based on the finite‐element method and evolution programs. The tool has been employed for the design of a load, optimized for both miniaturization and robustne

Mesh truncation by perfectly matched ani

Mesh truncation by perfectly matched anisotropic absorbers in the finite-element method

✍ Mustafa Kuzuoglu; Raj Mittra 📂 Article 📅 1996 🏛 John Wiley and Sons 🌐 English ⚖ 526 KB

Figure shows the percentage discrepancies between the measured resonant frequencies and those obtained from, respectively, (91, (15), and ( ) as functions of substrate electrical thicknesses of all antenna elements given in Table . The average discrepancies of expressions (9), (13, and (16) are, re