Title :
Design of Compact Orthomode Transducers
Author :
Tao, Yun ; Shen, Zhong-Xiang
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore
Abstract :
This paper presents the design of compact orthomode transducers (OMTs). Analysis methods for waveguide OMTs, including the mode-matching method and hybrid methods, are briefly reviewed. Three types of compact OMTs are described: a dielectric-filled OMT with reduced size, a planar OMT implementing using substrate integrated waveguide, and a dual band Tx/Rx OMT with a compact diaphragm to improve isolation. The dual-band Tx/Rx and SIW OMTs are verified by measurements. Challenges for designing multi-band OMTs with compact size are also pointed out.
Keywords :
microwave devices; substrate integrated waveguides; transducers; compact orthomode transducers; design; dielectric-filled orthomode transducers; hybrid methods; mode-matching method; substrate integrated waveguide; Circuits; Design engineering; Dielectric substrates; Dual band; Insertion loss; Mode matching methods; Planar waveguides; Transducers; Waveguide junctions; Waveguide transitions;
Conference_Titel :
Art of Miniaturizing RF and Microwave Passive Components, 2008. IMWS 2008. IEEE MTT-S International Microwave Workshop Series on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-2876-2
Electronic_ISBN :
978-1-4244-2877-9
DOI :
10.1109/IMWS.2008.4782256
