Single-Layer Reflectarray Antenna With Independent Dual-CP Beam Control

Zhang, Xingliang; Yang, Fan; Xu, Shenheng; Li, Maokun

doi:10.1109/lawp.2020.2969707

Cited by 23 publications

(15 citation statements)

References 14 publications

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“…The proposed unit cell is of more stable chirality-preserving characteristics, that is, the reflection phase difference of the unit in two orthogonal directions maintains 180 ∘ over a wide frequency range, which makes our design exhibit a much more broader AR bandwidth compared to the other designs (>36% in this work vs. 17.1%, 18 18.2%, 19 and 20% 20 ). Meanwhile, we appropriately compress the overall structure profile (F D ∕ = 0.73 in this work vs. 0.87 19 and 0.9 20 ) and sacrifice a small amount of AE (41.3%/34.6% in this work vs. 53% 19 and 52.7% 20 ) to obtain a more compact and miniaturized structure. But compared to most designs, our design still has a higher AE (41.3%/34.6% in this work vs. 25%, 14 28%, 18 and 15.7% 21 ).…”

Section: Experimentation and Discussionmentioning

confidence: 93%

“…Compared to dual-linearly polarized (dual-LP) RA, studies of dual-CP RA are still relatively insufficient despite its significant value in multiple fields. Existing RA designs that achieves dual-CP radiations in the same frequency band are mainly two types, [14][15][16][17][18][19][20][21][22] and the major difference is whether the LHCP and RHCP beams are independent with each other. For designs with coupled left-/right-handed circularly polarized (LHCP/RHCP) beams, [15][16][17] the coherence of the beams surely simplifies the design complexity of the unit cell, but meanwhile limits the application flexibility of the RA.…”

Section: Introductionmentioning

confidence: 99%

“…For designs with coupled left-/right-handed circularly polarized (LHCP/RHCP) beams, [15][16][17] the coherence of the beams surely simplifies the design complexity of the unit cell, but meanwhile limits the application flexibility of the RA. For designs with decoupled LHCP/RHCP beams, 14,[18][19][20][21][22] the unit cell can achieve independent phase modulation for LHCP and RHCP incident waves based on either the multifunctional-layer 14,22 or the single-functionallayer [18][19][20][21] concept. By separating the modulation of the fundamental phase and the geometric phase of the unit cell, extra degrees of design freedom are introduced, and thereby independent beam control of different polarizations can be obtained.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A wideband low‐profile dual‐circularly polarized reflectarray with decoupled LHCP/RHCP beams

Fan

Lin

Yang

et al. 2023

Micro & Optical Tech Letters

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This letter presents the design principle and experimental verification of a Ku‐band wideband low‐profile dual‐circularly polarized (dual‐CP) reflectarray (RA) with independent control of left‐/right‐handed circularly polarized (LHCP/RHCP) beams. Both the dynamic phase (DP) and Berry phase (BP) compensating methods are employed in the design of the unit cell, achieving independent LHCP/RHCP phase modulation based on the single‐functional‐layer concept. A single‐layer unit cell is designed, offering a ‐bit dual‐CP phase shift which facilitates the independent control of LHCP/RHCP beams. A prototype with asymmetrical dual‐CP beams is fabricated and tested. For LHCP and RHCP excitation, beam directions of () and () are realized, respectively, with sidelobe levels and cross‐polarizations both under −15 dB. The prototype exhibits a wide axial ratio (AR) bandwidth of over 36% with AR dB. The overlapped 1‐dB gain and AR dB bandwidth is 19.5% under LHCP input and 12.2% under RHCP input, with maximum aperture efficiency of 41.3% and 34.6%, respectively. The proposed dual‐CP RA exhibits broad band, pure chirality, high gain, low profile and independent polarization control, with single‐layer construction which is of low cost and easy processing.

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Section: Experimentation and Discussionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A wideband low‐profile dual‐circularly polarized reflectarray with decoupled LHCP/RHCP beams

Fan

Lin

Yang

et al. 2023

Micro & Optical Tech Letters

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“…FSS based multi-layered PSSs increases the cost of fabrication and makes the profile bulky. [2][3][4][5][6] The variable-size and element rotation approaches 7 together have been reported to achieve independent phase shifts for circularly polarized (CP) waves. Non-local (spatially dispersive) gradient meta-surfaces demonstrate the perfect anomalous reflection of incident plane waves into any desired direction 8,9 by the transformation of wavefronts, 10,11 which is difficult to conceive without the use of active elements.…”

Section: Introductionmentioning

confidence: 99%

Beam‐steering of microstrip antenna using single‐layerFSSbased phase‐shifting surface

Das

Mandal

Lalbakhsh

2021

Int J RF Mic Comp-Aid Eng

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In this article, beam-steering of microstrip antenna (MSA) is demonstrated in a cost-effective manner using a single-layer, low-loss passive frequency selective surface (FSS) based on a phase-shifting surface (PSS). A quasi-periodic spatial PSS is constructed by arranging four rows of eight split-ring resonators (SRR) shaped unit cells having different geometrical parameters but identical dimensions and placed adjacent to each other with a periodicity (p) of 0.18λ, where λ is the wavelength corresponding to the resonant frequency (4.5 GHz) of the fundamental unit cell. The geometrical parameters of the SRRs are tailored to control the surface impedance and the transmission phase across the surface area to reshape the phase front of the transmitted waves. A directive MSA operating at 5.5 GHz, is also designed and integrated with this PSS to demonstrate the beam-steering capability. On rotating/shifting the PSS over the MSA, beam-steering in the elevation plane is accomplished across À30 to +30 without degrading its reflection coefficient characteristics, with a maximum gain of 8.9 dBi. The best antenna performance in terms of beam tilt and gain is achieved when the PSS is vertically placed and fixed above the MSA.The MSA integrated with the non-uniform metasurface exhibits 75% radiation efficiency with a front to back ratio of 55.5 (17.4 dB). A prototype is fabricated and measured as a proof of concept. The measured results are consistent with full-wave simulation results.

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“…A reflectarray using the above-mentioned unit cell has been demonstrated in [23]. Lately, a clever technique that combines the variable size of the element along with the element rotation to obtain a single layer array was proposed in [24]. More recently, a spin-decoupled metasurface for circularly polarized reflector antennas was presented in [25].…”

Section: Introductionmentioning

confidence: 99%

A Dual Circularly-Polarized Multilayer Reflective Surface Based on Loaded Ring Slots

Martinez-Lopez

Rodriguez-Cuevas

et al. 2021

IEEE Access

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Single-Layer Reflectarray Antenna With Independent Dual-CP Beam Control

Cited by 23 publications

References 14 publications

A wideband low‐profile dual‐circularly polarized reflectarray with decoupled LHCP/RHCP beams

A wideband low‐profile dual‐circularly polarized reflectarray with decoupled LHCP/RHCP beams

Beam‐steering of microstrip antenna using single‐layerFSSbased phase‐shifting surface

A Dual Circularly-Polarized Multilayer Reflective Surface Based on Loaded Ring Slots

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