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90‐Degree H ‐plane bent waveguide using dielectric rods
Author(s) -
Kokubo Yoshihiro,
Kawai Tadashi
Publication year - 2009
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.24573
Subject(s) - rod , bent molecular geometry , waveguide , dielectric , microwave , materials science , optics , fabrication , cutoff frequency , plane (geometry) , cutoff , optoelectronics , physics , engineering , geometry , composite material , telecommunications , mathematics , alternative medicine , medicine , pathology , quantum mechanics
Conventional rectangular metallic waveguides are seldom used at frequencies higher than twice cutoff because of higher mode propagation. However, single‐mode propagation can occur for a metallic waveguide composed of an array of dielectric rods. An efficient way to construct one is to introduce dielectric rods at the bent portions because mode conversion does not occur in straight segments. As an example of the ease of fabrication, holes can be drilled at the top of a waveguide and dielectric rods inserted. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 2015–2017, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24573