Low-Profile Circularly Polarized Patch Antenna With Wide 3 dB Beamwidth

Ray, Mrityunjoy Kumar; Mandal, Kaushik; Nasimuddin, Nasimuddin

doi:10.1109/lawp.2019.2940703

Cited by 33 publications

(20 citation statements)

References 14 publications

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“…In terms of the magnetic field, for the CP antenna proposed in this paper, the magnetic field interacting with the arc structure and the main radiator enhances 3 dB ARBW. The radiator's center has an obviously strong magnetic field with a Gaussian distribution Variation of (a) electric and (b) magnetic field strength on antenna 2 and antenna 4. exhibited in the main radiator [19]. Thus, its ARBW can exceed 240 • , while antenna 2 has only 160 • .…”

Section: Circular Polarization Performancementioning

confidence: 99%

A Novel Low Profile Circularly Polarized GNSS Antenna With Wide 3 Db Axial Ratio Beamwidth

Zhai¹,

Chen²,

Wang³

et al. 2022

PIER M

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A novel low-profile GNSS microstrip circular polarization antenna is proposed and analyzed. Circular polarization is realized by asymmetric structure patch, and an arc structure loaded on the main radiator can keep two modes orthogonal over a wide-angle range, so that the antenna has an extremely wide 3 dB axial ratio beamwidth (ARBW). The far-field AR beamwidths obtained are 232 • and 212 • respectively in the main plane of φ = 0 • and φ = 90 • . In φ = 45 • and φ = 135 • , 3 dB AR beamwidths are 241 • and 244 • , far exceeding the 120 • required for satellite applications. In the whole CP band, 78.95% of the beam width exceeds 180 • . The profile is only 0.0156λ 0 , which is suitable, especially, for portable wireless systems or devices. The return loss bandwidth of −10 dB is 5.13% (1.52 GHz-1.6 GHz), which covers BeiDou Navigation System B1 (1.561 GHz). The axial ratio bandwidth is 1.28% (1.55 GHz-1.57 GHz), and the in-band peak gain is 4.09 dBi.

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Section: Circular Polarization Performancementioning

confidence: 99%

A Novel Low Profile Circularly Polarized GNSS Antenna With Wide 3 Db Axial Ratio Beamwidth

Zhai¹,

Chen²,

Wang³

et al. 2022

PIER M

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show abstract

“…Due to this the reported design has larger patch area and lower gain as well. Using diagonal slots on thinner substrate circular or rectangular patches, CP design offering higher AR beam width is reported [38][39][40]. However, those designs offer single band CP response with lower AR BW and thus cannot find applications in frequency and polarization agile systems.…”

Section: Parametric Design Formulation For Modified ψ-Shape Msamentioning

confidence: 99%

Dual Band Circularly Polarized Modified Ψ-Shape Microstrip Antenna

Deshmukh¹,

Odhekar²

2021

PIER C

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Single patch designs of a microstrip antenna with a U-slot or a pair of rectangular slots (E-shape) provide a single band circularly polarized response, and hence they are not useful in frequency and polarization agile applications. In this paper, a modified design of a Ψ-shape microstrip antenna is proposed for dual band and dual sense circularly polarized response. Use of unequal length rectangular slots in the modified patch optimizes the inter-spacing between the modified TM 21 and TM 22 resonant modes, surface current distributions and impedance levels at them to yield dual band circularly polarized response. An impedance bandwidth of 1992 MHz (37.05%) is obtained which completely covers the axial ratio bandwidth of 11.84 and 5.67%, in the two bands with a frequency ratio of 1.3 in between them, thereby satisfying the requirements of frequency agile systems. Over the impedance and axial ratio bandwidth, the antenna exhibits nearly broadside radiation pattern with a gain of around 7 dBi. A design methodology based on the simple parametric formulation is presented, which helps in realizing a similar antenna in the specific frequency band. The proposed antenna can find applications in frequency and polarization agile systems where the signal loss due to the interference and jamming can be reduced.

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“…In these designs, a single‐fed patch antenna was miniaturized by U‐shaped slot, and the CP radiation was realized by chamfering technique in Reference 1. A center‐fed CP antenna 3 adopted two concentric open annular slots to improve CP radiation, and then a low‐profile CP patch antenna 4 used a cross rectangular slots to widen the AR beamwidth based on the electromagnetic field coupling principle. Next, a CP crossed dipole antenna 2 adopted magnetic‐electric dipole to the improve AR bandwidth.…”

Section: Introductionmentioning

confidence: 99%

A low‐profile dual‐band circularly polarized antenna based on artificial magnetic conductor

Zhao

Zhang

Yang

et al. 2021

Int J RF Microw Comput Aided Eng

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A low‐profile dual‐band circularly polarized (CP) antenna with wide beamwidth is proposed in this article. The proposed antenna is composed of three layers of spiral patches, an artificial magnetic conductor (AMC) reflector and a four‐feed network. The three‐layer spiral patches as a quadrifilar helix antenna are employed to achieve dual‐band CP radiation. Then, a metal ground is replaced by one square‐shaped AMC surface to improve the antenna performance. With these antenna structures, the antenna size is only 0.36λ0 × 0.36λ0 × 0.106λ0 at 1.268 GHz. The antenna exhibits the impedance bandwidth ranging from 1.17 to 1.39 GHz and 1.49 to 1.58 GHz (|S11| < −10 dB). Furthermore, the proposed antenna has excellent axial ratio beamwidths of 171° at 1.268 GHz and 201° at 1.561 GHz. With these excellent characteristics, the designed antenna can be well applied to global navigation satellite systems.

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Low-Profile Circularly Polarized Patch Antenna With Wide 3 dB Beamwidth

Cited by 33 publications

References 14 publications

A Novel Low Profile Circularly Polarized GNSS Antenna With Wide 3 Db Axial Ratio Beamwidth

A Novel Low Profile Circularly Polarized GNSS Antenna With Wide 3 Db Axial Ratio Beamwidth

Dual Band Circularly Polarized Modified Ψ-Shape Microstrip Antenna

A low‐profile dual‐band circularly polarized antenna based on artificial magnetic conductor

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