Broad-Band Impedance Matching into Dielectric-Filled Waveguides

The problem of impedance matching between two waveguides filled with different dielectrics is discussed, and the conditions for broad-band matching are determined. Experimental results are presented for standard waveguides matched to guides filled with dielectrics having permittivities /spl epsi/ as...

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Bibliographic Details
Published in:IEEE transactions on microwave theory and techniques 1963-01, Vol.11 (1), p.36-39
Main Authors: Goodwin, F.E., Moss, G.E.
Format: Article
Language:English
Subjects:
Circuits
Dielectric materials
Frequency
Impedance matching
Masers
Microwave devices
Optical waveguides
Permittivity
Waveguide junctions
Waveguide transitions
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Description
Summary:The problem of impedance matching between two waveguides filled with different dielectrics is discussed, and the conditions for broad-band matching are determined. Experimental results are presented for standard waveguides matched to guides filled with dielectrics having permittivities /spl epsi/ as high as 100/sub epsi0/. Present applications include matching devices for X-band coupled-cavity transmission masers which employ ruby and alumina sections (/spl epsi/ /spl ap/ 10/sub epsi0/) . Future applications include matching devices for masers utilizing rutile (/spl epsi/ as high as 250/spl epsi0/).
ISSN:0018-9480
1557-9670
DOI:10.1109/TMTT.1963.1125588