Journal ArticleDOI
A slot design for uniform aperture field distribution in single-layered radial line slot antennas
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TLDR
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.Abstract:
A single-layered radial line slot antenna (RLSA) is proposed for a direct broadcast from a satellite (DBS) subscriber antenna. It utilizes a radially outward-traveling wave and the aperture field is intolerably tapered if the uniform slots are used. Two novel techniques are applied. First, the slot design for uniform aperture field distribution is introduced. Second, the radial line is terminated by a matching spiral, in place of a dummy load. It suppresses reflection and radiates all the residual power in circular polarization. For a model antenna of 600-mm diameter, the efficiency of 65% is observed. >read more
Citations
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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
Forward and backward leaky wave radiation with large effective aperture from an electronically tunable textured surface
TL;DR: In this paper, a textured surface is used as an electronically steerable leaky wave antenna, by coupling energy into a leaky band, and tuning the surface to change the radiation angle.
Journal ArticleDOI
Holographic Pattern Synthesis With Modulated Substrate Integrated Waveguide Line-Source Leaky-Wave Antennas
TL;DR: In this paper, the authors presented the synthesis of one-dimensional (line-source) leaky-wave antennas (LWAs) in substrate integrated waveguide (SIW) technology with modulated geometry, demonstrating the capability to flexibly tailor the radiated fields pattern, both in near and far field regimes.
Journal ArticleDOI
Low-cost monopulse radial line slot antenna
TL;DR: In this article, a radial line slot antenna (RLSA) with two simultaneous beams, one broadside beam and one conical beam, is proposed, with the slots placed on the upper plate in concentric rings.
Journal ArticleDOI
Full-Space Scanning Periodic Phase-Reversal Leaky-Wave Antenna
Ning Yang,Christophe Caloz,Ke Wu +2 more
TL;DR: In this paper, a full-space scanning periodic phase-reversal leaky-wave antenna array is proposed, designed in offset parallel stripline technology, and demonstrated experimentally.
References
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Journal ArticleDOI
A radial line slot antenna for 12 GHz satellite TV reception
TL;DR: 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).
Journal ArticleDOI
Characteristics of a radial line slot antenna for 12 GHz band satellite TV reception
TL;DR: In this paper, a planar antenna which can radiate a circularly polarized pencil beam in the x-band is presented for the application of receiving direct broadcast from a satellite, and the measured performance of a model antenna with a diameter of 0.6 m, with a measured antenna gain of about 35 dBi and axial ratio of about 1 dB are realized at 12.2 GHz.
Proceedings ArticleDOI
A slot design for uniform aperture field distribution in single-layered radial line slot antennas
TL;DR: In this article, the slot design for aperture field synthesis in a single-layered RLSA (radial line slot antenna) is summarized, where the slot length and the spacing are varied on the basis of a full-wave analysis.
Journal ArticleDOI
Analysis of slot coupling in a radial line slot antenna for DBS reception
TL;DR: In this article, a set of integral equations for the fields in the slot is derived, based on the field equivalence theorem, and is solved numerically by Galerkin's method.
Journal ArticleDOI
Matching slot pair for a circularly-polarised slotted waveguide array
TL;DR: In this paper, a matching slot pair which radiates all the incident power in a circularly-polarized wave is proposed and analyzed for use as a terminal in a leaky-wave slotted waveguide array.