Journal ArticleDOI
Experimental study of a microstrip patch antenna with an L-shaped probe
TLDR
In this paper, the L-shaped probe is shown to be an attractive feed for the thick microstrip antenna (thickness around 10% of the operating wavelength), and a parametric study on the rectangular patch antenna is presented.Abstract:
The L-shaped probe is shown to be an attractive feed for the thick microstrip antenna (thickness around 10% of the operating wavelength). A parametric study on the rectangular patch antenna is presented. It is found that the antenna attains 36% impedance bandwidth (SWR/spl les/2) as well as gain bandwidth and about 7-dBi average gain. A two-element array fed by L-probes is also proposed. Experiments show that the array design can substantially suppress the cross polarization of the proposed antenna. Both the antennas have stable radiation patterns across the passband. Moreover, the measured resonant frequencies of the proposed antenna agree well with an existing formula and the L-probe does not have much effect on the resonant frequency.read more
Citations
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Journal ArticleDOI
Invasive Weed Optimization and its Features in Electromagnetics
Shaya Karimkashi,Ahmed A. Kishk +1 more
TL;DR: A new numerical stochastic optimization algorithm, inspired from colonizing weeds, is proposed for Electromagnetic applications, and invasive weed optimization (IWO) is described and applied to different electromagnetic problems.
Journal ArticleDOI
Design of dual-polarized L-probe patch antenna arrays with high isolation
Hang Wong,K.L. Lau,Kwai-Man Luk +2 more
TL;DR: In this paper, a dual-polarized L-probe patch antenna is proposed to achieve high isolation between two input ports, achieving an impedance bandwidth of 23.8% and an isolation over 30 dB.
Journal ArticleDOI
Design and Study of Wideband Single Feed Circularly Polarized Microstrip Antennas
TL;DR: In this paper, the performance of single feed truncated corner circularly polarized microstrip antennas with different substrate thickness was studied by simulation and experiment and it was found that the axial ratio bandwidth could be enhanced considerably when a thicker substrate is used, provided that a U-slot and/or L-probe is used to effect impedance matching.
Journal ArticleDOI
Design of small-size wide-bandwidth microstrip-patch antennas
TL;DR: In this article, the U-slot patch antenna and the L-probe-fed patch antenna were proposed to reduce the resonant length of these wideband microstrip-patch antennas.
Journal ArticleDOI
Dual- and Multiband U-Slot Patch Antennas
TL;DR: In this paper, a wide band patch antenna fed by an L-probe can be designed for dual-and multi-band application by cutting U-slots on the patch.
References
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Journal ArticleDOI
Broadband microstrip patch antenna
TL;DR: In this paper, the characteristics of a rectangular microstrip antenna with an L-shaped probe are investigated and a foam layer with a thickness of around 10% of the wavelength is used as the supporting substrate.
Journal ArticleDOI
Experimental and simulation studies of the coaxially fed U-slot rectangular patch antenna
TL;DR: In this paper, the U-slot patch on a foam substrate of about 0.08/spl lambda/thick was designed to attain 20-30% impedance as well as gain bandwidth.
Journal ArticleDOI
An experimental investigation of electrically thick rectangular microstrip antennas
TL;DR: In this paper, the electromagnetic properties of rectangular microstrip antennas were investigated experimentally, and the bandwidth was calculated as a function of electrical thickness and the antenna radiation patterns were measured.
Journal ArticleDOI
Characteristics of a two-layer electromagnetically coupled rectangular patch antenna
TL;DR: In this article, the characteristics of a two-layer electromagnetically coupled rectangular patch antenna were investigated for s between 0.31λ0 and 0.37λ0, and the variations of pattern shape, 3 dB beamwidth and impedance bandwidth with spacing s between the two layers were studied.
Book
Millimeter-wave microstrip and printed circuit antennas
TL;DR: In this paper, the authors provide information needed to design millimeter-wave microstrip and printed circuit antennas from analysis methods and materials selection to antennas for particular applications, and special focus is given to the issues that impact the ability to scale microwave frequency designs to the millimeter wave.