Journal ArticleDOI
Scan blindness in infinite phased arrays of printed dipoles
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TLDR
In this article, a comprehensive study of infinite phased arrays of printed dipole antennas is presented, with emphasis on the scan blindness phenomenon, and a simple theory, based on coupling from Floquet modes to surface wave modes on the substrate, is shown to predict the occurrence of scan blindness.Abstract:
A comprehensive study of infinite phased arrays of printed dipole antennas is presented, with emphasis on the scan blindness phenomenon. A rigorus and efficient moment method procedure is used to calculate the array impedance versus scan angle. Data are presented for the input reflection coefficient for various element spacings and substrate parameters. A simple theory, based on coupling from Floquet modes to surface wave modes on the substrate, is shown to predict the occurrence of scan blindness. Measurements from a waveguide simulator of a blindness condition confirm the theory.read more
Citations
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Journal ArticleDOI
Microstrip antenna aperture-coupled to a microstripline
TL;DR: A new technique for feeding printed antennas is described in this paper, where a microstrip antenna on one substrate is coupled to a microstripline feed on another parallel substrate through an aperture in the ground plane which separates the two substrates.
Journal ArticleDOI
Analysis of an aperture coupled microstrip antenna
P. Sullivan,D.H. Schaubert +1 more
TL;DR: In this paper, a microstrip patch antenna coupled to a microstripline by an aperture in the intervening ground plane is analyzed and coupled integral equations are formulated by using the Green's functions for grounded dielectric slabs so that the analysis includes all coupling effects and the radiation and surface wave effects of both substrates.
Journal ArticleDOI
A new quasi-Yagi antenna for planar active antenna arrays
TL;DR: In this article, a broadband planar antenna based on the classic Yagi-Uda dipole antenna is presented, and its usefulness as an array antenna is explored, achieving a measured 48% frequency bandwidth for voltage standing-wave ratio <2, better than a 12dB front-to-back ratio, smaller than -15 dB cross polarization, and 3-5-dBi absolute gain.
Patent
Multi-beam antenna
TL;DR: In this article, a plurality of antenna elements on a dielectric substrate are adapted to launch or receive electromagnetic waves in or from a direction substantially away from either a convex or concave edge of the dielectrous substrate, wherein at least two of the antenna elements operate in different directions.
Book
Computational Electromagnetics for RF and Microwave Engineering
TL;DR: In this paper, the three most popular full-wave methods, the Finite Difference Time Domain Method (FDTM), the Method of Moments (MOM) and the Fine Element Method (FEEM), are introduced by way of one or two-dimensional problems.
References
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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
Microstrip array technology
TL;DR: Past and present technological developments in microstrip antenna arrays are summarized and emphasis is on exploring the potential of such arrays for satisfying the requirements of advanced military and commercial applications.
Journal ArticleDOI
Current distribution and input impedance of printed dipoles
I. Rana,Nicolaos G. Alexopoulos +1 more
TL;DR: In this paper, the current distribution, input impedance, and radiation pattern of wire antennas printed on a dielectric substrate are computed by solving Pocklington's equation by moment methods.
Journal ArticleDOI
Phased array theory and technology
TL;DR: In this paper, a review of array antennas highlights those elements of theory and hardware that are a part of the present rapid technological growth, including conformal and printed circuit arrays, wide angle scanning arrays and antennas with dramatically increased pattern control features such as low sidelobe, adaptively controlled patterns.
Phased array theory and technology
TL;DR: The paper presents a tutorial review of theoretical developments emphasizing techniques appropriate to finite arrays, but indicating parallel developments in infinite array theory, which has become the useful tool for analysis of large arrays.
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