Journal ArticleDOI
Theory and experiment on microstrip antennas
Y.T. Lo,D. Solomon,W. Richards +2 more
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In this article, a simple theory based on the cavity model was developed to analyze microstrip antennas, and the theoretically predicted radiation patterns and impedance loci closely agree with those measured for many antennas of various shapes and dimensions investigated thus far.Abstract:
A simple theory based on the cavity model is developed to analyze microstrip antennas. Formulas for numerous canonical shapes are given. In general the theoretically predicted radiation patterns and impedance loci closely agree with those measured for many antennas of various shapes and dimensions investigated thus far. In fact, this theory enables the computation of both patterns and impedance loci with little effort. The input admittance locus generally follows a circle of nearly constant conductance, but its center is shifted to the inductive region in the Smith chart plot. Peculiar properties for the case with degenerate or slightly degenerate eigenvalues are discussed. An accurate formula for determining the resonant frequency of a rectangular microstrip antenna is also given.read more
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Microstrip antenna technology
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TL;DR: A survey of microstrip antenna elements is presented, with emphasis on theoretical and practical design techniques, and critical needs for further research and development for this antenna are identified.
Journal ArticleDOI
Input impedance and mutual coupling of rectangular microstrip antennas
TL;DR: In this paper, a moment method solution to the problem of input impedance and mutual coupling of rectangular microstrip antenna elements is presented, which uses the grounded dielectric slab Green's function to account rigorously for the presence of the substrate and surface waves.
Journal ArticleDOI
An improved theory for microstrip antennas and applications
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TL;DR: In this paper, an improvement to a recently reported theory for the analysis of the pattern and impedance loci of microstrip antennas is developed, which yields a theory which is simple and inexpensive to apply.
References
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Journal ArticleDOI
Conformal microstrip antennas and microstrip phased arrays
TL;DR: In this paper, a new class of antennas using microstrips to form the feed networks and radiators is presented in this communication, which have four distinct advantages: 1) cost, 2) performance, 3) ease of installation, and 4) low profile conformal design.
Proceedings Article
Microstrip antennas
TL;DR: In this paper, the design procedures for both linearly and circularly polarized antennas are discussed for both UHF and C band and measured patterns are presented for antennas from UHF through C band.
Journal ArticleDOI
Resonant frequency of a circular disc, printed-circuit antenna
TL;DR: In this article, the resonant frequency of a planar, circular disc antenna was obtained in analytical form for a printed-circuit board, where the low profile antenna is separated from the ground plane only by a thin layer of dielectric material.
Journal ArticleDOI
Analysis of Microstrip Resonators
TL;DR: In this article, an accurate and efficient method was developed for computing the resonant frequencies of microstrip resonators, which was carried out rigorously using the full-wave analysis rather than the quasi-static approximation.
Journal ArticleDOI
The Expansions of Electromagnetic Fields in Cavities
TL;DR: In the theory of cavity resonators, the assumptions are frequently made that every irrotational function can be represented as the gradient of a scalar and that every divergenceless function as the rotation of a vector.