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Upper and lower bounds of 180° unit element of a ridge waveguide: Calculations and measurements
Author(s) -
Goussetis George,
Budimir Djuradj,
Helszajn Joe
Publication year - 2001
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.10004
Subject(s) - microwave , upper and lower bounds , ridge , finite element method , waveguide , matching (statistics) , unit (ring theory) , mode (computer interface) , element (criminal law) , optics , mathematics , physics , mathematical analysis , geometry , engineering , structural engineering , geology , computer science , quantum mechanics , statistics , law , paleontology , mathematics education , operating system , political science
The upper and lower bounds on the actual solution of any microwave structure is of general interest. The purpose of this letter is to compare some calculations using the mode‐matching and finite‐element methods, with some measurements on a 180° ridge waveguide insert between standard WR62 rectangular waveguides. The work suggests that the MMM produces an upper bound, while the FEM places a lower bound on the measurement. © 2001 John Wiley & Sons, Inc. Microwave Opt Technol Lett 31: 260–261, 2001.