A Single-Layer Dual-Band Dual-Sense Circularly Polarized Patch Antenna Array With Small Frequency Ratio

Wu, Qiong‐Sen; Zhang, Xiao; Li, Zhu; Wang, Jing; Zhang, Gary; Guo, Chunbing

doi:10.1109/tap.2021.3125425

Cited by 16 publications

(11 citation statements)

References 19 publications

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“…The designs in [1]- [3] realized single-polarized response. In [4], [9], [13], disparate patches were employed to realize dual-CP function and wider AR bandwidth. However, the dual-band dual-sense CP antenna realization method is not attractive by using two disparate stacked radiating patches operating at inverse sense, resulting in considerable antenna space and increased the complexity.…”

Section: Antenna Implementationmentioning

confidence: 99%

“…To realize dual-band dual-sense CP operation, two disparate radiating patches operating at inverse sense were directly connected by the feeding network in [4]- [5]. Similarly, same-layer parasitic patches [6]- [9] and multi-layer stacked patches [10]- [14] were used to produce dual-band and dualsense CP performances. Since independent patch radiators were employed, it's possible to control the frequency ratio of the CP bands.…”

Section: Introductionmentioning

confidence: 99%

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A Simple Structure Dual-Band Dual-Circularly Polarized Antenna With Controlled Frequency Ratio

Lin

Wang

et al. 2022

IEEE Access

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This paper proposes a dual-band dual-circularly polarized (CP) aperture-coupled patch antenna with flexible frequency ratio. By simply etching a modified S-shaped slot at the central of a circular patch, dual-band dual-CP operation is realized. In addition, the frequency ratio of the two CP bands can be flexibly controlled by optimizing the length parameters of the S-shaped slot arms. As a result, the frequency ratio can be tuned from 1.12 to 1.46 according to different requirements. For demonstration, the circularly polarized patch antenna operating at 3.42 and 3.85 GHz is manufactured and tested. The measured 3-dB axial-ratio (AR) bandwidth is 1.1% and 2.3% for the right-hand circular polarization (RHCP) and left-hand circular polarization (LHCP), respectively. The measured gains at the lower and upper bands are 9.4 and 9.8 dBic, respectively.INDEX TERMS Circularly polarized, dual-band, patch antenna, slot coupled, flexible frequency ratio.

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Section: Antenna Implementationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Simple Structure Dual-Band Dual-Circularly Polarized Antenna With Controlled Frequency Ratio

Lin

Wang

et al. 2022

IEEE Access

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“…Three CP modes were excited by a loop slot and a strip network in the patch antenna, mainly to create a larger AR bandwidth than the antenna fractional bandwidth (FBW). 4 In Wu et al, 5 radiating patches were arranged orthogonally one-by-one in both the x-and ydirections. Such arrangement not only facilitates the coupling between the radiating elements but also yields a phase difference of 90°in the electric current lines and generates CP radiation.…”

Section: Introductionmentioning

confidence: 99%

A low‐profile circularly polarized cavity‐based waveguide aperture antenna

Mahmud,

Mohammed,

Jarjees

et al. 2024

Micro & Optical Tech Letters

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This article proposes a new design of a circularly polarized (CP) aperture antenna based on a dual‐mode rectangular waveguide cavity‐resonator. A capacitive iris is employed to attain a strong coupling between the cavity and the input port, resulting in a larger fractional bandwidth (FBW) than a conventional aperture antenna. Another capacitive iris is embedded at the corner of the radiating aperture and extended into the cavity to maintain equal amplitude and a phase difference of 90° between the radiated electric (E) fields of the TE101 and TE110 modes, and thus yielding CP radiation. The proposed antenna has been fabricated using a computer numerical control machine. The antenna has an FBW of 18% at center frequency (f0) f0 = 10 GHz when the reflection coefficient (S11) S11 = −10 dB. The 3‐dB axial ratio bandwidth is 7%. A gain of 8.0 dBic is found at 10.06 GHz. The low profile and competitive performance of the antenna make it a good candidate in radar applications.

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“…These designs, however, are not suitable for transparent devices as multi-layer structures would reduce the transparency. Some notable techniques to design dual-band single-layer CP radiators include embedding Y and T-shape slots [21], using two different rings [22], [23], embedding metamaterial structures [24], loading open-ended stub [25], series-fed patch leakywave antenna [26], and adding non-radiative resonators [27]. Nevertheless, there are several challenges when adapting these techniques for meshed antennas.…”

Section: Introductionmentioning

confidence: 99%

“…For example, probe feeds [21]- [25] and conducting vias [24] should be avoided for transparent devices. Meshing the resonators in [27] can be difficult due to the small gaps and thin conducting lines. In general, to adapt to the meshed configuration, simple structures are desirable because the mesh could alter the currents on the patch, and consequently, change the radiation mechanisms.…”

Section: Introductionmentioning

confidence: 99%

Single-Layer, Dual-Band, Circularly Polarized, Proximity-Fed Meshed Patch Antenna

Pham

Kiem

et al. 2022

IEEE Access

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This paper proposes a new method to design a single-layer dual-band circularly polarized (CP) patch antenna with a small frequency ratio. The design consists of one or several pairs of rectangular patches proximity-fed by a 50-Ω microstrip line with an open-circuit termination. By exploiting both capacitive and inductive coupling mechanisms, and both orthogonal radiating modes of these patches, the antenna can be designed to operate at two close resonance frequencies. Due to its simple and single-layer structure, the antenna can be easily adapted with meshed configuration, which is suitable for transparent devices. For verification, a dual-band CP meshed patch antenna with a frequency ratio of 1.12 and two pairs of patch is designed, fabricated, and tested. The measurements show that the antenna prototype provides a |S 11 | < −10-dB bandwidth of 4.82−5.03 GHz (210 MHz) and 5.49−5.78 GHz (290 MHz), axial ratio < 3-dB bandwidth of 4.88−4.93 GHz (50 MHz) and 5.50−5.57 GHz (70 MHz), and broadside realized gains of 9.0 dBic and 8.6 dBic for the lower and upper bands, respectively. INDEX TERMS Single layer, rectangular patch, proximity feed, dual-band, circular polarization, meshed patch.

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A Single-Layer Dual-Band Dual-Sense Circularly Polarized Patch Antenna Array With Small Frequency Ratio

Cited by 16 publications

References 19 publications

A Simple Structure Dual-Band Dual-Circularly Polarized Antenna With Controlled Frequency Ratio

A Simple Structure Dual-Band Dual-Circularly Polarized Antenna With Controlled Frequency Ratio

A low‐profile circularly polarized cavity‐based waveguide aperture antenna

Single-Layer, Dual-Band, Circularly Polarized, Proximity-Fed Meshed Patch Antenna

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