Journal ArticleDOI
A radial line slot antenna for 12 GHz satellite TV reception
TLDR
In this paper, the authors proposed a planar antenna which can radiate circularly polarized pencil beams in the x-band for the application of receiving direct broadcast from a satellite (DBS).Abstract:
The analysis and design of novel planar antennas which can radiate circularly polarized pencil beams in x -band are presented for the application of receiving direct broadcast from a satellite (DBS). This antenna belongs to a class of slotted waveguide antennas and high efficiency is expected in principle. A circular two-dimensional aperture is located on the top plate of a twofold radial waveguide and is excited by a radially inward traveling transverse electromagnetic (TEM) mode in the upper waveguide. Slots are arrayed on the aperture spirally in such a way that they can couple with the radial currents flowing over the aperture plate to produce a circularly polarized broadside beam. Promising performances of the antenna are predicted theoretically. Experiments are performed with respect to basic characteristics of the antenna and they show the validity of the design and analysis.read more
Citations
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Journal ArticleDOI
A study of microstrip array antennas with the feed network
TL;DR: In this paper, a surface current approach is applied in which the electrical currents in the feed lines are modeled as in ideal transmission lines, and the free-space radiation and the surface-wave excitation of typical segments in printed feed networks are studied.
Journal ArticleDOI
Controlling Vector Bessel Beams with Metasurfaces
Carl Pfeiffer,Anthony Grbic +1 more
TL;DR: In this article, a common Gaussian beam is transformed into a vector Bessel beam, which is useful for particle trapping, near-field probes, and laser machining, enabling applications such as tractor beams in compact nanoscale devices.
Journal ArticleDOI
Efficiency of 76-GHz post-wall waveguide-fed parallel-plate slot arrays
Jiro Hirokawa,Makoto Ando +1 more
TL;DR: In this article, a post-wall waveguide-fed parallel-plate slot array is designed and fabricated for various sizes of 76-GHz post wall waveguide and achieved 40-50% efficiency with 35.3 dBi gain with 39.3% efficiency at 77.0 GHz at 104 mm/spl times/100 mm.
Journal ArticleDOI
A slot design for uniform aperture field distribution in single-layered radial line slot antennas
TL;DR: In this paper, a single-layered radial line slot antenna (RLSA) was proposed for direct broadcast from a satellite (DBS) subscriber antenna, which utilizes a radially outward-traveling wave and the aperture field is intolerably tapered if the uniform slots are used.
Journal ArticleDOI
Analysis of a Waveguide-Fed Metasurface Antenna
TL;DR: In this paper, a set of simple, closed-form analytical expressions can be used to quickly assess the radiation characteristics for a range of designs, and these simple yet compelling guidelines should help to actualize the significant potential of metasurface antennas for dynamically reconfigurable apertures.
References
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Journal ArticleDOI
Arbitrary polarization from annular slot plannar antennas
F. Goebels,K. Kelly +1 more
TL;DR: In this article, the authors describe arbitrarily polarized antennas (AP antennas) which can radiate and receive constant-shape pencil beams with either circular sense, any linear or elliptical polarization by a simple adjustment in the feed circuit.
Journal ArticleDOI
New wideband high-gain stripline planar array for 12 GHz satellite TV
TL;DR: In this paper, a stripline planar array was used for 12 GHz satellite TV reception with a 2 : 1 VSWR bandwidth of over 2 GHz and a gain higher than 20.6 dBi in the 11.7-12.5 GHz bandwidth.
Journal ArticleDOI
A 36 GHz printed planar array
TL;DR: In this article, the performance of a simple, low-cost, centre-fed, efficient planar array aerial for Q band is described, where the microstrip radiating pattern is produced by conventional photolithographic techniques.
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