Accession Number:

AD0256554

Title:

THE CUT-OFF WAVELENGHTS AND POWER-VOLTAGE IMPEDANCES OF COMPOSITE WAVEGUIDES FOR THE FUNDAMENTAL MODE

Descriptive Note:

Corporate Author:

JOHNS HOPKINS UNIV BALTIMORE MD CARLYLE BARTON LAB

Personal Author(s):

Report Date:

1961-05-01

Pagination or Media Count:

1.0

Abstract:

The Rayleigh-Ritz method is used to solve the eigenvalue problem for electromagnetic waves propagating through a waveguide of a non-simple cross section. The method is applied to obtain the cut-off wavelength and the power-voltage impedance for the fundamental mode that equivalent to the H10 mode in rectangular waveguide and the H11 mode in circular waveguide for a waveguide with semicircular side walls and flat top and bottom walls, and for a truncated-circular waveguide. Numerical results are given for both waveguides, and supporting experimental evidence is adduced for the waveguide with semicircular sides and flat top and bottom walls, for aspect ratios of 0.302 and 0.702. The cut-off wavelengths obtained are within 3 while the power-voltage impedances are within 6 of their respective exact values. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE