Journal ArticleDOI
Linearly polarized radial-line slot-array antennas with improved return-loss performance
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TLDR
In this article, a series of 550 mm diameter linearly polarized Ku-band prototype antennas were constructed to experimentally investigate the efficiency of reflection cancellation and beam squinting on the antenna.Abstract:
The standard linearly polarized radial-line slot-array (RLSA) antenna exhibits poor return loss as seen by its coaxial feed. This paper describes techniques that improve the poor return-loss performance of this antenna, by using two interchangeable methods: i) reflection-canceling slots on the front and back surface of the antenna, and ii) beam squinting. A series of 550 mm diameter linearly polarized Ku-band prototype antennas were constructed to experimentally investigate the efficiency of each of these methods. In order to cut experimental costs, initial radiation-pattern modeling was performed theoretically, and then prototypes were developed using inexpensive aluminum foil. Measurements of the developed prototypes indicated that both the reflection-canceling and beam-squinting methods provided a substantial improvement in return loss over the desired frequency band.read more
Citations
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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
Optimization technique for linearly polarized radial-line slot-array antennas using the multiple sweep method of moments
TL;DR: In this article, a recursive method for solving large matrix equations known as the multiple sweep method of moments (MSMOM) was proposed to optimize linearly polarized radial-line slot-array antennas.
Journal ArticleDOI
Double-beam parallel-plate slot antenna
TL;DR: In this paper, a double-beam linear polarized parallel-plate slot antenna at 12-GHz band is presented, where two different radiation patterns are generated, exciting the parallel plate from opposite sides.
Journal ArticleDOI
Rigorous MoM Analysis of Finite Conductivity Effects in RLSA Antennas
TL;DR: In this article, a method-of-moments (MoM) formulation for the analysis of radial line slot array (RLSA) antennas, which includes the finite conductivity of metals, is presented.
Journal ArticleDOI
270-GHz LTCC-Integrated Strip-Loaded Linearly Polarized Radial Line Slot Array Antenna
TL;DR: In this article, a planar linearly polarized radial line slot array (RLSA) antenna is proposed to achieve a high gain with improved impedance matching and suppressed cross-polarization levels at a 270 GHz band.
References
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Journal ArticleDOI
Experimental investigations into a linearly polarized radial slot antenna for DBS TV in Australia
P.W. Davis,Marek E. Bialkowski +1 more
TL;DR: A hybrid theoretical/experimental approach to the design of radial line slot array (RLSA) antennas for receiving direct broadcast satellite (DBS) TV programs in Australia is presented in this paper.
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
A linearly polarized radial line slot antenna
TL;DR: In this paper, a linear polarized radial line slot antenna (RLSA) was proposed to produce a uniform aperture distribution with linear polarization, and the radiation patterns indicated a reasonable cross-polarization level more than 15 dB below the copolarization.
Journal ArticleDOI
A reflection cancelling slot set in a linearly polarized radial line slot antenna
TL;DR: In this paper, a radial line slot antenna (RLSA) slot design is presented where reflection canceling slots are added to the conventional ones; four slots form one slot set as a unit radiator of linear polarization.
Journal ArticleDOI
Analysis of a coaxial-to-waveguide adaptor including a discended probe and a tuning post
TL;DR: In this article, a field matching analysis of a coaxial-to-waveguide adaptor incorporating a disc-ended probe and a tuning post is presented, and a computer algorithm for calculating the input impedance of this structure is developed.
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Experimental investigations into a linearly polarized radial slot antenna for DBS TV in Australia
P.W. Davis,Marek E. Bialkowski +1 more