Design of an Omnidirectional Circularly Polarized Antenna

Ma, Yue; Li, Jianying; Xu, Rui

doi:10.1109/lawp.2017.2682958

Cited by 27 publications

(17 citation statements)

References 13 publications

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“…A new technology is reported in [13] which introduces shorting vias in a circular patch to enhance the impedance bandwidth of the omnidirectional antenna. A wideband omnidirectional antenna [14] has a simple structure which is composed of two-layer substrates, shorting pins, and single feed. A novel omnidirectional antenna, of which the bandwidth is enhanced 24.7%, is reported in [15].…”

Section: Introductionmentioning

confidence: 99%

Single-Layer Single-Feed Wideband Omnidirectional Microstrip Antenna With Rotating Square Patches

Zhang¹,

Yin²

2020

PIER Letters

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A single-layer single-feed wideband omnidirectional microstrip antenna with rotating square patches is investigated in this paper. To obtain wide impedance band, the proximity-fed structure is introduced to the antenna to generate dual resonating modes. Two square patches with rotating angle of 90 degrees are used as the main radiator to improve the omnidirectional feature of the radiation pattern. For verifying the design, an antenna prototype with wide operation bandwidth is designed, simulated, fabricated, and measured. The results indicate that the impedance bandwidth (|S 11 | < −10 dB) as high as 48.6% (3.02-4.96 GHz) is obtained. Meanwhile, the height of the antenna is only 0.11λ 0 (λ 0 is the free space wavelength corresponding to the lowest frequency). Moreover, omnidirectional radiation pattern is obtained over the operation band. The advantages of wideband, low-profile and simple feed structure make the antenna a good candidate in modern communication systems.

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Section: Introductionmentioning

confidence: 99%

Single-Layer Single-Feed Wideband Omnidirectional Microstrip Antenna With Rotating Square Patches

Zhang¹,

Yin²

2020

PIER Letters

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“…In [12], circular polarization was realized using a circular patch with six vortex slots and six shorting pins. In [13], four arcs were incorporated to improve circular polarization of a patch antenna. In [14], elliptical-ring slot was deployed surrounding the main patch to improve circular polarization.…”

Section: Introductionmentioning

confidence: 99%

“…In [15], a circular patch connected to ground plane by conductive vias achieved wideband CP but low antenna gain. The antennas in [11][12][13][14][15] required multilayered PCB and shorting vias.…”

Section: Introductionmentioning

confidence: 99%

Circularly Polarized Omnidirectional Antenna with Dipole Core and Diagonally Adjoined Parasitic Braces for ISM Band Applications

Dangkham

Dentri

Phongcharoenpanich

et al. 2019

International Journal of Antennas and Propagation

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This research proposes a circularly polarized (CP) single-fed omnidirectional dipole antenna operable in 2.45 GHz frequency for the industrial, scientific, and medical (ISM) radio band applications. The proposed antenna consisted of bisectional dipole core, a pair of quarter-wave baluns, and four diagonally adjoined parasitic braces. The bisectional dipole core was utilized to improve the antenna gain and realize omnidirectional radiation pattern, and the quarter-wave baluns were to symmetrize the current on the bisectional core. The four parasitic braces collectively generated circular polarization. In the study, simulations were conducted using CST Microwave Studio and a prototype antenna fabricated. To validate, experiments were carried out, and simulation and experimental results compared. The finding revealed good agreement between the simulation and experimental results. Essentially, in addition to achieving an antenna gain of 2.07 dBic, the proposed CP single-fed omnidirectional antenna is suited to ISM frequency band applications.

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“…In general, there exist 3 common ways for designing an omnidirectional CP antenna. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] In reference, 1,2 the antenna is inherently circular polarized and excited by a single feed, which has been created based on the zeroth-order resonance mode of epsilon negative transmission line.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the other designs of omnidirectional circular polarized antenna are reported in. [11][12][13][14][15][16][17][18] However, all the reported antennas have an omnidirectional circular polarized radiation pattern which covers a sector (eg, u 5 908) of azimuthal plane and is not suitable for space applications. To overcome this problem, antennas should have circular polarized pattern with 3608 coverage CP pattern radiation.…”

mentioning

confidence: 99%

Multi-petal antenna with omnidirectional circular polarized radiation

Nadi

Amirhosseini

2018

Int J RF Microw Comput Aided Eng

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This article presented an omnidirectional circularly polarized antenna with simple and low‐cost configuration designed by combination of tilted loops for unmanned aerial vehicles such as drones and quadcopters. Length of each loop was 1 wavelength and was repeated around antenna axis with a specific angle. The 90° phase difference between 2 equally orthogonal polarized components was inherently provided by the loops without the need for exciting the loops 90° out of the phase. Symmetric configuration antenna yields circular polarization in both the azimuthal and elevation planes. The measured results showed that the 10‐dB impedance bandwidth was 390 MHz (ranging from 2.1 to 2.5 GHz) at the frequency of 2.45 GHz and the axial ratio bandwidth for < 3 dB was 400 MHz (ranging from 2.1 to 2.5 GHz). Moreover, this antenna had the right hand circular polarization with the difference between the measured left hand and right hand circular polarization gains being about 20 dB; the right hand circular polarized gain was about 1.4 dB.

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Design of an Omnidirectional Circularly Polarized Antenna

Cited by 27 publications

References 13 publications

Single-Layer Single-Feed Wideband Omnidirectional Microstrip Antenna With Rotating Square Patches

Single-Layer Single-Feed Wideband Omnidirectional Microstrip Antenna With Rotating Square Patches

Circularly Polarized Omnidirectional Antenna with Dipole Core and Diagonally Adjoined Parasitic Braces for ISM Band Applications

Multi-petal antenna with omnidirectional circular polarized radiation

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