By Topic

Theoretical Design and Analysis for {\rm TE}_{20} {\rm TE}_{10} Rectangular Waveguide Mode Converters

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Qiang Zhang ; Coll. of Optoelectron. Sci. & Eng., Nat. Univ. of Defense Technol. (NUDT), Changsha, China ; Cheng-Wei Yuan ; Lie Liu

From Maxwell's equations in an orthogonal curvilinear coordinates system, a strict derivation of mode coupling coefficients among TEn0 rectangular waveguide modes is given, obtaining the general and explicit formulas of the coupling coefficients. Theoretical design methods and a useful set of expressions for several kinds of overmoded rectangular waveguides are reported, which enable engineers to quickly design these types of waveguide bends. Firstly, a 90° H-plane bend was investigated to change the wave propagating direction to its perpendicular direction for a certain purpose. Its transmission efficiency of TE10 mode is 99.9% at 9.5 GHz, with bandwidth (for transmission efficiency >; 95%) of 8-12 GHz. Secondly, a strict and explicit derivation of mode conversion efficiencies of two mode converters, i.e., dual-bend and tri-bend TE20-to- TE10 converters, are proposed. Both of them have similar conversion efficiency of 99.9% at 8.5 GHz with bandwidths (for mode-conversion efficiency >; 95% ) of 7.98-9.07 and 8.09-8.97 GHz, respectively. All of the theoretical models presented in this paper are verified by the finite-element simulations. We also experimentally show the performances of these devices, which are sufficient to demonstrate the validity of the theoretical models.

Published in:

Microwave Theory and Techniques, IEEE Transactions on  (Volume:60 ,  Issue: 4 )