Accession Number : ADD017851

Title :   Broadband Waveguide Pressure Window.

Descriptive Note : Patent, Filed 8 Aug 94, patented 30 Jan 96,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Rivera, David F ; Floyd, Thomas R ; Josypenko, Michael J

Report Date : 30 Jan 1996

Pagination or Media Count : 8

Abstract : A broad passband pressure barrier arrangement is provided for insertion in a circular waveguide between a source and a receiver of radio frequency (RF) energy with a spatially circumferential electric field characteristic of the TEoi mode. At least two cylindrical barrier regions are coaxially aligned and arranged symmetrically in mirror image fashion about a radial plane of the circular waveguide. The cylindrical barrier regions include at least one solid cylindrical plug region sealed in a cross-section of the circular waveguide and having a longitudinal thickness sufficient to withstand a predetermined pressure load. Each of the cylindrical barrier regions are defined by a characteristic impedance at opposing end faces thereof and a by characteristic impedance between the opposing end faces. A region-by-region impedance analysis process begins with an end face of the arrangement that is furthest from the source and is completed with an end face of the arrangement that is nearest the source. The permittivities of the barrier regions and the longitudinal thicknesses of barrier regions are optimized across the passband of interest.

Descriptors :   *BANDPASS FILTERS, *PATENTS, *WAVEGUIDE FILTERS, THICKNESS, ELECTRIC FIELDS, FREQUENCY BANDS, RECEIVERS, BROADBAND, BARRIERS, CIRCULAR, RADIOFREQUENCY FILTERS, WAVEGUIDE WINDOWS

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE