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Journal ArticleDOI

Circularly polarised microstrip antenna with a tuning stub

Kin-Lu Wong, +1 more
- 30 Apr 1998 - 
- Vol. 34, Iss: 9, pp 831-832
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TLDR
In this paper, a simple circular polarisation (CP) design of microstrip antennas using a tuning stub is proposed and studied, and it is also demonstrated that, by applying this CP design method to a circular microstrip patch with a cross slot having equal slot lengths, a compact circularly-polarised microstrip antenna can easily be implemented, with much more relaxed manufacturing tolerances as compared to the case of using a cross-slot of unequal slot lengths.
Abstract
A simple circular polarisation (CP) design of microstrip antennas using a tuning stub is proposed and studied. It is also demonstrated that, by applying this CP design method to a circular microstrip patch with a cross slot having equal slot lengths, a compact circularly-polarised microstrip antenna can easily be implemented, with much more relaxed manufacturing tolerances as compared to the case of using a cross slot of unequal slot lengths. Details of the antenna designs are described, and experimental results are presented and discussed.

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Citations
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Book

Compact and Broadband Microstrip Antennas

Kin-Lu Wong
TL;DR: In this paper, the authors present an overview of the most recent advances in regular-size Dual-Frequency Antennas and their application in a wide range of applications, including: 1.1 Introduction.
Journal ArticleDOI

Asymmetric-Circular Shaped Slotted Microstrip Antennas for Circular Polarization and RFID Applications

TL;DR: In this article, a single-feed configuration based asymmetric-circular shaped slotted square microstrip patches are adopted to realize the compact circularly polarized microstrip antennas with slits.
Journal ArticleDOI

Capacitively Loaded Circularly Polarized Implantable Patch Antenna for ISM Band Biomedical Applications

TL;DR: In this article, a single-fed miniaturized circularly polarized microstrip patch antenna is designed and experimentally demonstrated for industrial-scientific-medical (2.4-2.48 GHz) biomedical applications.
Journal ArticleDOI

A Compact Circularly Polarized Cross-Shaped Slotted Microstrip Antenna

TL;DR: In this article, a compact cross-shaped slotted microstrip patch antenna is proposed for circularly polarized (CP) radiation, where a symmetric, cross shaped slot is embedded along one of the diagonal axes of the square patch for CP radiation and antenna size reduction.
Journal ArticleDOI

On the circular polarization operation of annular-ring microstrip antennas

TL;DR: In this paper, an annular-ring microstrip antenna with a pair of inserted slits at its fundamental TM/sub-11/ mode is proposed and experimentally investigated and two examples of the proposed antenna fed using a microstrip line at the inner and outer patch boundaries are studied.
References
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Journal ArticleDOI

A circularly polarized small-size microstrip antenna with a cross slot

TL;DR: In this paper, a new, circularly polarized small-size microstrip antenna using a proximity coupled feed method is proposed, and the measured results verify the circular polarization and the antenna radius was reduced by about 36% by using the slot lengths which are nearly equal to the diameter of the circular patch antenna.
Journal ArticleDOI

Small dual-frequency microstrip antenna with cross slot

TL;DR: In this article, a single-feed, reduced-size dual-frequency rectangular microstrip antenna with a cross slot of equal length is presented, where the frequency ratio is mainly determined by the aspect ratio of the rectangular patch, and the reduction in the two operating frequencies is achieved by cutting a cross-slot in the microstrip patch.
Journal ArticleDOI

Tuning stubs for microstrip-patch antennas

TL;DR: In this article, a method for simultaneous tuning of both the resonant frequency and reflection coefficient of a coaxially fed rectangular-microstrip patch is described, where the use of two tuning stubs allows independent adjustment of the effective patch length and the effective position of the feed point.
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