Open AccessThe effect of standing waves on the attenuation constant for a low‐loss rectangular waveguide
Author(s) -
Collier Richard J.,
Ridler Nick M.,
Young Paul R.
Publication year - 2021
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/ell2.12017
Subject(s) - attenuation , propagation constant , waveguide , resistive touchscreen , constant (computer programming) , optics , bandwidth (computing) , acoustics , standing wave , physics , materials science , electrical engineering , telecommunications , engineering , computer science , programming language
Abstract When standing waves are present in a rectangular waveguide, the resistive losses in the walls are not uniformly distributed. This affects the measurement of the attenuation constant. Here the phenomenon for the TE 10 mode in air‐filled waveguide, where the deviation from the normal travelling wave attenuation constant is only about ±1% over the conventional bandwidth, is discussed. However, the paper also shows that nearer the cut‐off frequency for the waveguide, the deviation could be as high as ±100%.