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Spiral microstrip antenna with resistanceThe present invention relates to microstrip antennas, and more particularly to wide bandwidth spiral antennas with resistive loading. A spiral microstrip antenna having resistor element embedded in each of the spiral arms is provided. The antenna is constructed using a conductive back plane as a base. The back plane supports a dielectric slab having a thickness between one-sixteenth and one-quarter of an inch. A square spiral, having either two or four arms, is attached to the dielectric slab. Each arm of the spiral has resistor elements thereby dissipating an excess energy not already emitted through radiation. The entire configuration provides a thin, flat, high gain, wide bandwidth antenna which requires no underlying cavity. The configuration allows the antenna to be mounted conformably on an aircraft surface.
Document ID
19950007725
Acquisition Source
Headquarters
Document Type
Other - Patent Application
Authors
Shively, David G. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 17, 2013
Publication Date
June 28, 1994
Subject Category
Communications And Radar
Report/Patent Number
NAS 1.71:LAR-15088-1
Patent Number: NASA-CASE-LAR-15088-1
Patent Application Number: US-PATENT-APPL-SN-269268
Report Number: NAS 1.71:LAR-15088-1
Accession Number
95N14139
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-CASE-LAR-15088-1
Patent Application
US-PATENT-APPL-SN-269268

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