Journal ArticleDOI
The finite ground plane effect on the microstrip antenna radiation patterns
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In this paper, the authors employed the uniform geometrical theory of diffraction (GTD) for calculating the edge diffracted fields from the finite ground plane of a microstrip antenna.Abstract:
The uniform geometrical theory of diffraction (GTD) is employed for calculating the edge diffracted fields from the finite ground plane of a microstrip antenna. The source field from the radiating patch is calculated by two different methods: the slot theory and the modal expansion theory. Many numerical and measured results are presented to demonstrate the accuracy of the calculations and the finite ground plane edge effect.read more
Citations
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Book
Array and Phased Array Antenna Basics
TL;DR: In this article, the authors present the early history of antennas and their development in between the First World War and the Second World War, as well as the post-war development of antennas.
Journal ArticleDOI
Patch antennas on externally perforated high dielectric constant substrates
J.S. Colburn,Yahya Rahmat-Samii +1 more
TL;DR: In this paper, the concept of external substrate perforation is applied to patch antennas in order to overcome the undesirable features of thick and high dielectric constant substrates for patch antennas without sacrificing any of the desired features.
Proceedings Article
Microstrip reflectarray
TL;DR: In this paper, the microstrip patches with microstrip transmission delay lines are proposed to form a microstrip reflectarray antenna and the results of a theoretical analysis and evaluation of this antenna are presented.
Journal ArticleDOI
Ground plane effects on planar inverted-F antenna (PIFA) performance
M.-C. Huynh,Warren L. Stutzman +1 more
TL;DR: In this paper, a parametric analysis of the PIFAs mounted on a conducting box of fixed size is presented, where the authors show the trade-offs between PIFA geometry and ground plane size with electrical performance.
Book
Broadband Planar Antennas: Design and Applications
Zhi Ning Chen,M.Y.W. Chia +1 more
TL;DR: In this article, the authors present an overview of the most important features of a planar antenna and its application in computer applications. But, they do not discuss how to improve the performance of these antennas.
References
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Journal ArticleDOI
A uniform geometrical theory of diffraction for an edge in a perfectly conducting surface
R.G. Kouyoumjian,P.H. Pathak +1 more
TL;DR: In this article, a compact dyadic diffraction coefficient for electromagnetic waves obliquely incident on a curved edse formed by perfectly conducting curved plane surfaces is obtained, which is based on Keller's method of the canonical problem, which in this case is the perfectly conducting wedge illuminated by cylindrical, conical, and spherical waves.
Journal ArticleDOI
An improved theory for microstrip antennas and applications
W. Richards,Y.T. Lo,D. Harrison +2 more
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.
ReportDOI
An Improved Theory for Microstrip Antennas and Applications. Part I.
TL;DR: In this article, 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.
Journal ArticleDOI
Linearly polarized microstrip antennas
TL;DR: In this article, an equivalent network for square and rectangular shaped microstrip radiating elements is derived, where the radiating element is considered as two slots separated by a transmission line of low characteristic impedance.
Journal ArticleDOI
Evaluation of edge-diffracted fields including equivalent currents for the caustic regions
C. Ryan,Leon Peters +1 more
TL;DR: In this paper, the authors used the geometrical theory of diffraction to obtain the backscattered field for plane-wave incidence on a target with particular emphasis on those regions that are usually avoided, namely, the caustic region and its immediate vicinity.