Journal ArticleDOI
Broadband Circularly Polarized Annular-Ring Microstrip Antenna
TLDR
In this article, a wideband circularly polarized (CP) annular-ring patch antenna with two proximity-coupled L-probe feeds orientated to have phases of 0deg and 90deg, using a broadband 90deg hybrid feed, is proposed.Abstract:
A wideband circularly polarized (CP) annular-ring patch antenna with two proximity-coupled L-probe feeds orientated to have phases of 0deg and 90deg, using a broadband 90deg hybrid feed, is proposed. It is found that the current distribution for CP operation can be improved by cutting a smaller concentric circular slot on the original larger circular patch to form an annular-ring patch. With such an arrangement, the proposed antenna delivers a wider axial ratio (AR) bandwidth than that of the conventional circular patch with the identical feeding technique. Considering the common overlapped bandwidth limited by the impedance, AR and gain, the proposed annular-ring patch antenna exhibits an effective bandwidth of 38% from 1.5 to 2.2 GHz, which is wider than the corresponding bandwidth of 29.7% from 1.35 to 1.82 GHz for the conventional circular patch. Moreover, the effective bandwidth of 38% for the proposed annular-ring antenna is also much wider than those for the other annular-ring patch antennas in the literature.read more
Citations
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Journal ArticleDOI
Dual-Band Circularly Polarized Cavity-Backed Annular Slot Antenna for GPS Receiver
TL;DR: In this article, a circularly polarized (CP) cavity-backed annular slot antenna for GPS receiver is designed to operate in both the L1 and L2 bands of the Global Positioning System (GPS).
Journal ArticleDOI
Printed Meandering Probe-Fed Circularly Polarized Patch Antenna With Wide Bandwidth
TL;DR: In this article, a wideband compact circularly polarized (CP) patch antenna is proposed, which consists of a printed meandering probe (M-probe) and truncated patches that excite orthogonal resonant modes to generate wideband CP operation.
Journal ArticleDOI
Circularly Polarized Stacked Annular-Ring Microstrip Antenna With Integrated Feeding Network for UHF RFID Readers
TL;DR: In this article, a novel circularly polarized (CP) annular-ring microstrip antenna (ARMSA) is proposed for American ultra-high frequency (UHF) radio frequency identification (RFID) readers.
Wideband Circularly Polarized E-Shaped Patch Antenna for Wireless Applications
TL;DR: In this paper, a circularly polarized probe-fed single-layer microstrip-patch antenna with a wideband axial ratio is proposed, which is a modified form of the conventional E-shaped patch, used to broaden the impedance bandwidth of a basic patch antenna.
Journal ArticleDOI
Wideband Circularly Polarized E-Shaped Patch Antenna for Wireless Applications [Wireless Corner]
TL;DR: In this article, a circularly polarized probe-fed single-layer microstrip-patch antenna with a wideband axial ratio is proposed, which is a modified form of the conventional E-shaped patch, used to broaden the impedance bandwidth of a basic patch antenna.
References
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Journal ArticleDOI
A dual-band circularly polarized aperture-coupled stacked microstrip antenna for global positioning satellite
D.M. Pozar,S.M. Duffy +1 more
TL;DR: In this article, the design and testing of an aperture-coupled circularly polarized antenna for Global Positioning System (GPS) applications is described, which operates at both the L1 and L2 frequencies of 1575 and 1227 MHz.
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
Design of wideband circularly polarized aperture-coupled microstrip antennas
S.D. Targonski,David M. Pozar +1 more
TL;DR: In this article, two variations of a novel feeding technique for a wideband circularly polarized aperture-coupled microstrip antenna are described, and experimental results are shown for each antenna, and results for the two designs are compared.
Journal ArticleDOI
Analysis and design of L-probe proximity fed-patch antennas
TL;DR: In this article, the effects of geometric parameters on the characteristics of the L-probe patch antenna are extensively studied and the variation of input impedance at resonance with different geometric parameters is plotted on a Smith chart.
Journal ArticleDOI
Low-cost broadband circularly polarized patch antenna
TL;DR: In this article, a single-feed broadband circularly polarized patch antenna is proposed, which has a simple structure consisting of a corner-truncated square radiating patch, an L-shaped ground plane, and a probe feed.