Broadband Design of a Single Layer Large Reflectarray Using Multi Cross Loop Elements

Chaharmir, M.R.; Shaker, J.; Legay, Hervé

doi:10.1109/tap.2009.2029600

Cited by 128 publications

(86 citation statements)

References 6 publications

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“…As can be seen from Figure 6, only 8% of red star points are outside the blue area causing phase errors during the design, i.e., those required phase shifts for these unit cells are unachievable simultaneously for both 9 GHz and 13 GHz. Most suitable configurations should be found out among the database shown in Figure 3 to match the desired phase shifts at the upper and lower frequencies concurrently [18]. Due to the inevitable phase errors, the candidates that produce the best phase shifts at both frequencies are selected by minimizing the following error function:…”

Section: Design Principlementioning

confidence: 99%

Single-Layer Dual-Band Dual-Linear-Polarization Reflectarray Antenna With Different Beams for Each Band

Han¹,

Zhang²,

Yang³

2017

PIER C

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Abstract-A novel single-layer unit cell structure is proposed to design a dual-band dual-linearpolarization reflectarray antenna with different beams for X and Ku bands. The unit cell structure is composed of a circular ring and two cross bow-tie structures combined by a circular patch. Five tunable geometric parameters can be optimized to achieve the required phase distributions of the reflectarray antenna with independent radiation patterns for each band which is a challenge for singlelayer linearly polarized reflectarrays. Besides, the proposed unit cell structure has the ability to meet the demand of dual-polarization applications. A 301-element center-fed reflectarray with an octagon-shape aperture operating at X and Ku bands is designed, manufactured and measured to verify the dual-band performance of the proposed unit cell. The measured results show that the object of achieving different beams at different frequencies is realized with good radiation patterns at both designed frequencies. Besides, the similar radiation patterns for both linear polarizations are also achieved at both bands.

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Section: Design Principlementioning

confidence: 99%

Single-Layer Dual-Band Dual-Linear-Polarization Reflectarray Antenna With Different Beams for Each Band

Han¹,

Zhang²,

Yang³

2017

PIER C

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“…(a) 5중 다이폴 반사소자 [19] (a) 5-dipole element [19] (b) 2중 십자 반사소자 [20] (b) Double-cross element [20] (c) 십자 및 사각 링 결합 반 사소자 [25] (c) Element with combination of cross and rectangle rings [25] (d) 2중 십자 링 반사소자 [26] (d) Double cross ring element [26] 그림 13. 다양한 광대역 반사소자 …”

Section: 리플렉트어레이의 대역폭 특성을 개선하기 위해 반사unclassified

“…이후 다양한 형상을 그림 1. 리플렉트어레이 안테나의 구조 이용하여 단층 기판에서도 반사위상 특성을 개선시키는 반사소자에 관한 연구가 진행되어 왔다 [9]～ [26] . [2] .…”

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Researches on Microstrip Reflectarray Antennas

Yoon¹

2015

The Journal of Korean Institute of Electromagnetic Engineering

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Microstrip reflectarray is an antenna which controls its radiation pattern with a number of reflective elements. Conventionally, the reflectarray has been researched to replace curved reflector antennas. In this paper, design theories of reflectarray is briefly introduced, and research trends of high gain and broadband reflectarrays are reviewed. To improve the gain of the reflectarrays, it is required that the reflection phase errors on the reflectarray surface be minimized. For this purpose, sufficiently wide reflection phase range and low phase sensitivity should be realized with the designed element. For bandwidth improvement, the reflection phase of the element should be linear with the frequency variation. In this paper, various researches to improve the reflection phase characteristics of the element for high gain and broadband reflectarrays, such as multi-layer and single-layer multi-resonant structures, are reviewed. Also, dual-reflectarray configuration for compact antenna design is reviewed. Finally, various applications of reflectarrays such as contoured beam, near-field focusing, and RCS reduction are reviewed.

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“…In recent years, many single-layer elements have attracted much more attention due to their low-cost manufacturing and other advantages. Many novel designs of the single-layer structure have been proposed for enhancing the reflectarray bandwidth, including the multi cross loop elements [8], microstrip elements composed of rectangular patch and rectangular ring [9].…”

Section: Introductionmentioning

confidence: 99%

A Novel Double-Petal Loop Element for Broadband Reflectarray

Ren¹,

Jiao²,

Li³

et al. 2011

PIER Letters

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Abstract-In this paper, a reflectarray antenna composed of a combination of double-petal loops of variable size is presented. To evaluate the performance of the designed element, a parametric study is carried out using Ansoft HFSS. For the optimal parametrics, the proposed structure shows an almost linear behavior, while the phase range is in excess of 500 • . Then, a prime-focus 77-element reflectarray with this type of element has been designed and implemented. The measured results show that the obtained 1-dBi gain bandwidth of the reflectarray with double-petal loop elements can reach as large as 25% and the highest gain is about 19.3 dBi. Compared with the existing single layer elements (cross and rectangle loop, double rings, etc.), microstrip reflectarray with this double-petal loop element can obtain a larger bandwidth.

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Broadband Design of a Single Layer Large Reflectarray Using Multi Cross Loop Elements

Cited by 128 publications

References 6 publications

Single-Layer Dual-Band Dual-Linear-Polarization Reflectarray Antenna With Different Beams for Each Band

Single-Layer Dual-Band Dual-Linear-Polarization Reflectarray Antenna With Different Beams for Each Band

Researches on Microstrip Reflectarray Antennas

A Novel Double-Petal Loop Element for Broadband Reflectarray

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