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Experimental and modal verification of an integral equation solution for a thin-walled dichroic plate with cross-shaped holesIn order to add the capability of an X-band uplink onto the 70-m antenna, a new dichroic plate is needed to replace the Pyle-guide-shaped dichroic plate currently in use. The replacement dichroic plate must exhibit an additional passband at the new uplink frequency of 7.165 GHz, while still maintaining a passband at the existing downlink frequency of 8.425 GHz. Because of the wide frequency separation of these two passbands, conventional methods of designing air-filled dichroic plates exhibit grating lobe problems. A new method of solving this problem by using a dichroic plate with cross-shaped holes is presented and verified experimentally. Two checks of the integral equation solution are described. One is the comparison to a modal analysis for the limiting cross shape of a square hole. As a final check, a prototype dichroic plate with cross-shaped holes was built and measured.
Document ID
19930020402
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Epp, L. W. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Stanton, P. H. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
September 6, 2013
Publication Date
May 15, 1993
Publication Information
Publication: The Telecommunications and Data Acquisition Report
Subject Category
Electronics And Electrical Engineering
Accession Number
93N29591
Funding Number(s)
PROJECT: RTOP 310-20-64-86-02
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19930020397Collected WorksThe Telecommunications and Data Acquisition Report
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