New Proximity Coupled Feeding Method for Reconfigurable Circularly Polarized Microstrip Ring Antennas

2008 ◽  
Vol 56 (7) ◽  
pp. 1860-1866 ◽  
Author(s):  
Kin-Fai Tong ◽  
Jingjing Huang
Keyword(s):  
Feeding Method ◽  
Circularly Polarized ◽  
Microstrip Ring

scholarly journals CPW-fed circularly-polarized antenna array with high front-to-back ratio and low-profile

Open Physics ◽  
2018 ◽  
Vol 16 (1) ◽  
pp. 651-655 ◽  
Author(s):  
Yilin Liu ◽  
Kama Huang
Keyword(s):  
Antenna Array ◽  
Coplanar Waveguide ◽  
Ground Plane ◽  
Axial Ratio ◽  
Antenna Design ◽  
Impedance Bandwidth ◽  
Feeding Method ◽  
Circularly Polarized ◽  
Low Profile ◽  
Novel Design

Abstract A novel design of a coplanar waveguide (CPW) feed antenna array with circular polarization (CP) and a high front-to-back ratio is described. The proposed CP array is achieved by using a compact CPW–slotline transition network etched in the ground plane. The measured results show that this kind of feeding method can improve the impedance bandwidth, as well as the axial ratio bandwidth of the CP antenna array and provide adequate gain. The proposed array can achieve a 6.08% impedance bandwidth and a 4.10% CP bandwidth. Details of the antenna design and experimental results are presented and discussed.

Single-feed circularly polarized microstrip ring antenna and arrays

2000 ◽  
Vol 48 (7) ◽  
pp. 1040-1047 ◽  
Author(s):  
R.R. Ramirez ◽  
F. De Flaviis ◽  
N.G. Alexopoules
Keyword(s):  
Circularly Polarized ◽  
Ring Antenna ◽  
Microstrip Ring

scholarly journals Wideband Circularly Polarized SIW Antenna Array That Uses Sequential Rotation Feeding

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Fang-Fang Fan ◽  
Ze-Hong Yan ◽  
Wei Wang
Keyword(s):  
Antenna Array ◽  
Delay Line ◽  
Impedance Matching ◽  
Axial Ratio ◽  
Slot Antenna ◽  
Feeding Method ◽  
Circularly Polarized ◽  
X Band ◽  
Measured Impedance ◽  
Diamond Ring

A wideband right-handed circularly polarized (CP) substrate integrated waveguide- (SIW-) based diamond ring-slot antenna array at the X-band is presented in this study. The array consists of four elements that exhibit wideband impedance matching characteristics and good radiation performance. The array also employs a sequential rotation feeding method to achieve the wideband axial ratio (AR) bandwidth. The feeding network is based on the SIW power divider with a delay line related to sequential rotation feeding. To validate our design, an antenna array is fabricated and measured. The measured impedance and AR bandwidths are 19.2% (VSWR<2) and 14.1% (AR<3 dB), respectively. Moreover, the antenna has a stable CP peak gain of more than 12 dBic from 10.1 GHz to 10.7 GHz.

scholarly journals A Compact Wideband Circularly Polarized Microstrip Slot Antenna with Parasitic Elements

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Chenhui Xia ◽  
Shuo Diao ◽  
Wenting Yin ◽  
Zhifang Huang ◽  
Lei Wang ◽  
...  
Keyword(s):  
Wireless Communication ◽  
Ground Plane ◽  
Resonant Mode ◽  
Slot Antenna ◽  
Feeding Method ◽  
Circularly Polarized ◽  
Tightly Coupled ◽  
Feeding Structure ◽  
Feeding Configuration ◽  
Sequential Phase

A compact wideband circularly polarized (CP) microstrip slot antenna (MSA) with parasitic elements is designed in this letter. The CP MSA comprises a square-loop sequential-phase (SP) feeding configuration, four rotated rectangular patches, and four L-shaped slots embedded in the ground plane. The square-loop SP feeding structure comprises a square loop and an arc-shaped strip, which could provide a 270° phase difference. Four rotated rectangular patches are placed at the edge of the square-loop feeding configuration using a capacitively tightly coupled feeding method to stimulate the CP resonant mode. After selecting these elements and tuning proper dimensions, the broad operating bandwidths of 4.38–5.25 GHz (18%) for |S11| <–10 dB and 4.65–5.31 GHz (13.2%) for AR <3 dB could be realized. Hence, the designed CP MSA has a potential application value in wireless communication.

scholarly journals Triple-Band Dual-Sense Circularly Polarized Hybrid Dielectric Resonator Antenna

Sensors ◽  
2018 ◽  
Vol 18 (11) ◽  
pp. 3899 ◽  
Author(s):  
Amir Altaf ◽  
Munkyo Seo
Keyword(s):  
Circular Polarization ◽  
Dielectric Resonator ◽  
Microstrip Line ◽  
Axial Ratio ◽  
Dielectric Resonator Antenna ◽  
Circularly Polarized ◽  
Left Handed ◽  
Measurement Results ◽  
Microstrip Ring ◽  
Triple Band

In this paper, a triple-band dual-sense circularly polarized (CP) hybrid dielectric resonator antenna is proposed. A modified hexagonal dielectric resonator (DR) is top-loaded with a square microstrip ring (SMR). A vertical-tapered-strip connected to a 50- Ω microstrip line is used to excite the proposed antenna. It is found that the lower and central CP bands correspond to left-handed circular polarization and are produced by the TM 11 and TE 111 modes of the SMR and modified hexagonal DR, respectively. The upper CP band is formed by the combination of the quasi-TM 21 mode of the SMR and quasi-TE 111 mode of the DR that exhibits right-handed circular polarization. The measurement results of the fabricated prototype show triple-band response for |S 11 | < −10 dB with impedance bandwidths (IBWs) of 17.4% (1.75–2.03 GHz), 28.13% (2.23–2.96 GHz), and 2.97% (3.65–3.76 GHz) in the lower, central, and upper bands, respectively. The measured 3 dB axial ratio bandwidths lying within −10 dB IBWs are 3.69% (1.86–1.93 GHz), 5.46% (2.67–2.82 GHz), and 2.15% (3.68–3.76 GHz) along with the peak gains of 5 dBic, 5.28 dBic, and 2.36 dBic in the lower, central, and upper bands, respectively.

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