Journal ArticleDOI
Pattern distortion due to edge diffractions
TLDR
The method of combining wedge diffraction solutions for the analysis of an axial TEM-mode slot is extended here for an arbitrary aperture antenna in a finite size ground plane as mentioned in this paper, where the boundary value solution considers the pattern component when the aperture is in an infinite ground plane, and the diffraction solution (secondary pattern) considers the contribution to the pattern from the edges of the finite ground plane.Abstract:
The method of combining wedge diffraction solutions for the analysis of an axial TEM-mode slot is extended here for an arbitrary aperture antenna in a finite size ground plane. The new approach, however, considers superposition of boundary-value and wedge-diffraction solutions on the same antenna. The boundary-value solution (primary pattern) considers the pattern component when the aperture is in an infinite ground plane, and the diffraction solution (secondary pattern) considers the contribution to the pattern from the edges of the finite ground plane.read more
Citations
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Journal ArticleDOI
Finite-difference time-domain method for antenna radiation
TL;DR: In this article, the authors used the finite difference time-domain (FDTD) method to model and predict the radiation patterns of wire and aperture antennas of three basic configurations, including a pyramidal horn antenna.
Journal ArticleDOI
Modulated Elliptical Slot Antenna for Electric Field Mapping and Microwave Imaging
TL;DR: In this paper, a novel modulated elliptical slot antenna, loaded with a PIN diode, is introduced and analyzed in order to improve upon the conventional MST, which performs well at lower microwave frequencies, but its utility at high microwave and millimeter wave frequencies is limited.
Journal ArticleDOI
A Multifeed Antenna for High-Efficiency On-Antenna Power Combining
TL;DR: This paper presents a multifeed antenna structure that synthesizes the desired far-field radiation characteristics with on-antenna power combining and increases the total radiated power of a wireless transmitter.
Journal ArticleDOI
Diffraction theory techniques applied to aperture antennas on finite circular and square ground planes
TL;DR: In this paper, the elevation-plane patterns of a large TEM mode coax aperture and a TM-01} mode circular aperture on finite circular and square ground planes have been derived using geometrical theory of diffraction; design curves for the coax case are presented.
Journal ArticleDOI
Open slot antenna in a small ground plane
J.X. Yun,Rodney G. Vaughan +1 more
TL;DR: In this paper, a parametric study of a slot antenna is presented including the impact and use of a small groundplane with different sizes and bending angles along the slot axis, which has direct matching to 50 Ω, high efficiency and medium gain over a wide bandwidth.
References
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Journal ArticleDOI
Radiation characteristics of current elements near a finite-length cylinder
TL;DR: In this paper, an analysis using image and geometrical theory of diffraction techniques for calculating the elevation-plane pattern of radial infinitesimal current elements mounted near or on perfectly conducting cylinders of finite length is presented.
Journal ArticleDOI
Equatorial plane pattern of an axial-TEM slot on a finite size ground plane
Constantine A. Balanis,L. Peters +1 more
TL;DR: Edge diffraction effects in TEM axially slotted finite ground plane on radiation pattern in waveguides of different geometries as discussed by the authors were studied in the context of TEM.
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