NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Resonant frequencies of irregularly shaped microstrip antennas using method of momentsThis paper describes an application of the method of moments to determine resonant frequencies of irregularly shaped microstrip patches embedded in a grounded dielectric slab. For analysis, the microstrip patch is assumed to be excited by a linearly polarized plane wave that is normal to the patch. The surface-current density that is induced on the patch because of the incident field is expressed in terms of subdomain functions by dividing the patch into identical rectangular subdomains. The amplitudes of the subdomain functions, as a function of frequency, are determined using the electric-field integral equation (EFIE) approach in conjunction with the method of moments. The resonant frequencies of the patch are then obtained by selecting the frequency at which the amplitude of the surface-current density is real. The resonant frequencies of the equilateral triangular and other nonrectangular patches are computed using the present technique, and these frequencies are compared with measurements and other independent calculations.
Document ID
19940011294
Acquisition Source
Legacy CDMS
Document Type
Technical Publication (TP)
Authors
Deshpande, Manohar D. (Vigyan Research Associates, Inc. Hampton, VA., United States)
Shively, David G. (NASA Langley Research Center Hampton, VA, United States)
Cockrell, C. R. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 6, 2013
Publication Date
October 1, 1993
Subject Category
Communications And Radar
Report/Patent Number
NASA-TP-3386
CECOM-TR-93-E-1
L-17160
NAS 1.60:3386
Accession Number
94N15767
Funding Number(s)
PROJECT: RTOP 505-64-70-01
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Related Records

There are no records associated with this record.
No Preview Available