Journal ArticleDOI
Broadband Circularly Polarized Patch Antenna With Parasitic Strips
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TLDR
In this paper, a patch antenna with parasitic strips is presented for wideband circular polarization, in which four parasitic strips are sequentially rotated and gap-coupled around the patch.Abstract:
A patch antenna with parasitic strips is presented for wideband circular polarization. In order to broaden the axial-ratio (AR) bandwidth of the original corner-truncated patch, four parasitic strips are sequentially rotated and gap-coupled around the patch. A capacitive-coupled feed with a small disc on the top of the feeding probe is utilized to obtain a wide impedance-matching bandwidth. Moreover, another disc-loaded shorting pin is placed at the center of the antenna to adjust the squint beams and improve the gains along $ + z$ -axis. Measured results show that the proposed antenna with a low profile of $0.13{\lambda _0}$ obtains a global bandwidth of 24% (2.32–2.95 GHz) for $\vert{S_{11}}\vert , ${\rm AR} , and average gain of 8 dBic.read more
Citations
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Journal ArticleDOI
Metasurface-Based Single-Layer Wideband Circularly Polarized MIMO Antenna for 5G Millimeter-Wave Systems
TL;DR: Without a dedicated decoupling structure, the MIMO antenna shows an excellent diversity performance in terms of isolation between antenna elements, envelope correlation coefficient, and channel capacity loss.
Journal ArticleDOI
Wideband Circularly Polarized Cavity-Backed Asymmetric Crossed Bowtie Dipole Antenna
Huy Hung Tran,Ikmo Park +1 more
TL;DR: In this article, a single-feed cavity-backed, circularly polarized (CP) antenna is designed for wideband wireless applications, which is made up of asymmetric crossed bowtie dipoles.
Journal ArticleDOI
Microstrip Patch Antennas With Multiple Parasitic Patches and Shorting Vias for Bandwidth Enhancement
TL;DR: Two novel microstrip patch antennas with multiple parasitic patches and shorting vias have been presented for the bandwidth enhancement, which achieves a measured 10-dB impedance bandwidth of 17.4% from 5.5 to 6.55 GHz.
Journal ArticleDOI
Broadband Circularly Polarized Crossed Bowtie Dipole Antenna Loaded With Parasitic Elements
TL;DR: In this paper, an extremely broadband circularly polarized (CP) antenna is presented, which consists of a crossed bowtie dipole loaded with four unequal parasitic cross slots, four parasitic bowtie patches, and four parasitic rectangular strips.
Journal ArticleDOI
Enhancing Bandwidth of CP Microstrip Antenna by Using Parasitic Patches in Annular Sector Shapes to Control Electric Field Components
Jiang-Feng Lin,Qing-Xin Chu +1 more
TL;DR: In this article, a bandwidth-enhanced circularly polarized (CP) microstrip antenna with two annular sector-shaped parasitic patches was proposed and analyzed, where the induced current on the parasitic patches involves both x and y components, hence it can control the theta and phi components of the electric field.
References
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Journal ArticleDOI
A technique for an array to generate circular polarization with linearly polarized elements
TL;DR: In this paper, a method for generating circularly polarized radiation from an array composed of linearly polarized elements having unique angular and phase arrangements is presented, which can significantly reduce the complexity, weight, and RF loss of the array feed.
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
Theory and analysis of differentially-driven microstrip antennas
Yue Ping Zhang,J.J. Wang +1 more
TL;DR: In this article, a differentially-driven microstrip antenna was proposed to analyze the input impedance and radiation characteristics of the differentially driven microstrip antennas, and their performance was investigated.
Journal ArticleDOI
Design principles of sequentially fed, wide bandwidth, circularly polarised microstrip antennas
TL;DR: In this paper, a first order analysis shows how the sequential technique significantly improves the axial ratio bandwidth in the relation to the number of patches in the array and the feeder connections.
Journal ArticleDOI
Broadband Circularly Polarized Crossed Dipole With Parasitic Loop Resonators and Its Arrays
TL;DR: In this article, a novel printed crossed dipole with broad axial ratio (AR) bandwidth is proposed, which consists of two dipoles crossed through a 90°phase delay line, which produces one minimum AR point due to the sequentially rotated configuration.
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