Broadband Low-Cost Reflectarray Using Modified Double-Square Loop Loaded by Spiral Stubs

Wang, Quan; Shao, Zhenhai; Cheng, Yu Jian; Li, Peng Kai

doi:10.1109/tap.2015.2448797

Cited by 29 publications

(10 citation statements)

References 11 publications

(12 reference statements)

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“…The feeder is located at (0, −70.98 mm, 195 mm) with the incident angle θ i = 20° and the polarization title angle γ = 45° ( φ f = 135°). All the configuration parameters are calculated through the process discussed in References .…”

Section: Resultsmentioning

confidence: 99%

A low‐cost variable polarization reflectarray based on controllable wave‐path difference

Wang¹,

Shao

Jin³

et al. 2019

Micro & Optical Tech Letters

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A variable polarization reflectarray antenna is investigated in this communication. It consists of the dual‐layer three parallel dipole loops (TPDLs) to independently control the reflected spatial compensative phase and the phase difference of two orthogonal LP components. In this case, the proposed variable polarization reflectarray can transform a linear polarization (LP) mode into an arbitrary polarization mode by simply rotating the feeder and adjusting the wave‐path difference between the dual‐layer TPDL. A detailed operating mechanism of the variable polarization is introduced in this work. As an example, a 13 × 13‐element offset reflectarray is designed, fabricated, and measured. Four different polarization states of right‐hand circularly polarized (RHCP), 45°LP, left‐hand CP (LHCP), and 135°LP are measured and validated with a specific incident LP wave. The measured gains of 22 dB and 1.5‐dB gain bandwidths of 11% are achieved for all the states. This new reflectarray antenna is especially useful for low‐cost variable polarization applications.

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Section: Resultsmentioning

confidence: 99%

A low‐cost variable polarization reflectarray based on controllable wave‐path difference

Wang¹,

Shao

Jin³

et al. 2019

Micro & Optical Tech Letters

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“…The equivalent circuit model approach is used to investigate the resonant behavior of the proposed reflectarray unit element [8,9]. The circuit model of the reflectarray unit cell along with air-gaped ground plane is depicted in Fig.…”

Section: Equivalent Circuit Analysismentioning

confidence: 99%

“…According to [7,8], reflection coefficient can be computed by the following relationship provided in Eqn. 2,…”

Section: Equivalent Circuit Analysismentioning

confidence: 99%

A single layer delay-lines based reflectarray for X-band applications

Shabbir

Saleem

Rehman

et al. 2018

IEICE Electron. Express

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This paper presents a single-layer delay-lines based reflectarray for X-band applications. The proposed design contains an octagonal-shaped patch with T-shape delay-lines. A phase range of 500°is realized by using T-shape delay-lines. A stable phase range is achieved for TE and TM modes at 0°, 15°and 30°incident angles. An equivalent circuit model is used to investigate the resonant property of the proposed reflectarray unit element. A 21 × 21 elements reflectarray is designed, fabricated and measured on an FR-4 substrate. The proposed design provides 1-dB gain bandwidth of 18.5% and 3-dB gain bandwidth of 30%. Measured gain of 26 dBi at 10 GHz with aperture efficiency of 65% is obtained. The proposed reflectarray configuration have side-lobe-levels less than −25 dB.

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“…The reflectarray antennas developed earlier [1] and the design method is relatively mature. Until now, the wideband reflectarray antenna can achieve 25% 1-dB gain bandwidth in [2]- [5]. Recently, research on wideband…”

Section: Introductionmentioning

confidence: 99%

A Double-Layer Highly Efficient and Wideband Transmitarray Antenna

et al. 2019

IEEE Access

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A double-layer highly efficient and wideband transmitarray antenna is presented. The transmitarray element is composed of four metal vias and two crosspatches with two stubs. The metal vias penetrate the entire substrate and arrange symmetrically. The crosspatches are printed on both sides of the dielectric substrate. The metal vias are introduced to enhance the coupling strength. The stubs are added to ensure a sufficient phase shift range. The achievable transmission magnitude is greater than −2 dB, and the phase shift range exceeds 360 • within the whole band. A transmitarray antenna using the proposed element was designed, manufactured, and measured. The simulation and measurement results are in good agreement. The measured maximum gain is 29.2 dBi at 18 GHz with the 51.4% aperture efficiency. The experimental results show that the proposed antenna has a 1-dB gain bandwidth of 9% (17.2-18.8 GHz). The proposed double-layer transmittarray antenna realizes the low-profile characteristic, simplifies the design complexity, and solves the problems of the mass and the cost.

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Broadband Low-Cost Reflectarray Using Modified Double-Square Loop Loaded by Spiral Stubs

Cited by 29 publications

References 11 publications

A low‐cost variable polarization reflectarray based on controllable wave‐path difference

A low‐cost variable polarization reflectarray based on controllable wave‐path difference

A single layer delay-lines based reflectarray for X-band applications

A Double-Layer Highly Efficient and Wideband Transmitarray Antenna

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