A Universal Solution to ${\\rm TM}_{11}$ -to- ${\\rm HE}_{11}$ Circular Mode Converter Design

Author

Xin Hua Yu ; Ji Liang Deng ; Si Min Li ; Wei Ping Cao ; Xi Gao ; Yan Nan Jiang

Author_Institution

Key Lab. of Cognitive Radio & Inf. Process., Guilin Univ. of Electron. Technol., Guilin, China

Volume

63

Issue

12

fYear

2015

Firstpage

3845

Lastpage

3850

Abstract

A universal solution to TM₁₁-to- HE₁₁ mode converters in highly oversized circumferentially corrugated circular waveguides is proposed based on the nonuniform rational B-spline technique. A 35-GHz TM₁₁-to- HE₁₁ mode converter of radius 16 mm is designed by the method and predicted to have a conversion bandwidth of 7.9% when the HE₁₁ mode conversion efficiency is over 98.5%. The output mode content is extremely close to that of the ideal HE₁₁ mode. The hot and cold tests show good property of the mode converter. The method offers universal solutions to the problems of the corrugated circular waveguide mode converters design at arbitrary radius and frequency.

Keywords

circular waveguides; splines (mathematics); TM₁₁-to- HE₁₁ circular mode converter design; cold tests; corrugated circular waveguide mode converters; frequency 35 GHz; hot tests; output mode content; oversized circumferentially corrugated circular waveguides; radius 16 mm; Bandwidth; Frequency conversion; Microwave theory and techniques; Optimization; Splines (mathematics); Surface reconstruction; Surface topography; ${rm TM}_{11}$-to-${rm HE}_{11}$ mode converter; High conversion; high power; mode content; nonuniform rational B-spline (NURBS) technique;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/TMTT.2015.2490680

Filename

7303975

A Universal Solution to -to- Circular Mode Converter Design

Xin Hua Yu ; Ji Liang Deng ; Si Min Li ; Wei Ping Cao ; Xi Gao ; Yan Nan Jiang

jour

A Universal Solution to ${\\rm TM}_{11}$ -to- ${\\rm HE}_{11}$ Circular Mode Converter Design