Omega-shaped resonant elements for dual-polarization and wideband reflectarray

Higashi, Daichi; Deguchi, Hiroyuki; Tsuji, Mikio

doi:10.1109/aps.2014.6904733

Cited by 6 publications

(7 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In [11], ±5°rotation of elements improves the cross polarisation level to <−35 dB (in simulation) while the present work achieves lower cross-polarisation level in principal and non-principal planes (in simulation). In addition, the present work has better cross-polarisation compared with dual polarised single layer RA proposed in [12] and its modified version introduced in [13]. …”

Section: Introductionmentioning

confidence: 88%

Broadband, low‐cost and low cross‐polarisation dual linearly polarised reflectarray antenna

Mahmoodi

Chamaani

2016

IET Microwaves, Antennas & Propagation

View full text Add to dashboard Cite

This study attempts to attain a broad bandwidth (BW) from a simple and low cost dual linearly polarised structure. The unit cell is a patch loaded with three concentric slots: a square, a vertical cross and a slant cross, printed on a foam backed dielectric. Required phases can be adjusted by both vertical and slant crosses which provides an extra degree of freedom in phase error and phase sensitivity reduction. The slant cross also improves angular stability of gain and cross-polarisation. Four reflectarrays (RAs) were designed at 10.7 GHz frequency. RA1 and RA2 utilised only the vertical and slant crosses, respectively, whereas RA2 achieved broader BW due to less sensitivity of slant cross. RA3 used both crosses to get lower phase error. However, due to dissimilarity among cells and uncontrolled phase sensitivity, it was poor in terms of gain and BW. To overcome this issue, in RA4, in addition to phase error and phase sensitivity control diversity, a local similarity is enforced. This array shows 23 dB gain and 3 dB gain BW of 17%. In 3 dB BW, its cross-polarisation level is −24 dB at boresight and also satisfactory in non-principal planes.

show abstract

Section: Introductionmentioning

confidence: 88%

Broadband, low‐cost and low cross‐polarisation dual linearly polarised reflectarray antenna

Mahmoodi

Chamaani

2016

IET Microwaves, Antennas & Propagation

View full text Add to dashboard Cite

show abstract

“…1(c). Figure 2 shows geometries of the element's shape developed by the authors for dual-polarization and wide-band reflectarray [13][14][15]. To realize the dual-polarization use, the additional two resonant elements are put at the perpendicular as shown in Fig.…”

Section: Methodsmentioning

confidence: 99%

“…Therefore, it is necessary to suppress cross polarization, while keeping wide-band co-polarization properties. Therefore, this paper presents new reflectarray elements to suppress cross polarization [15]. These elements have linear phase lines and the desirable reflection-phase range of 360 • for the frequency response.…”

Section: Introductionmentioning

confidence: 99%

Omega-Shaped Geometries of Reflectarray Resonant Elements With Low Cross-Polarization for Wideband and Dual-Polarization Use

Higashi¹,

Deguchi²,

Tsuji³

2018

PIER M

Self Cite

View full text Add to dashboard Cite

Abstract-This paper presents low cross-polarization single-layer reflectarray elements for dualpolarization use. These elements have an omega-shaped symmetrical structure to realize the crosspolarization reduction and also provide parallel linear reflection-phase properties with almost the same slop characteristics for the frequency, thereby achieving the desirable reflection phase range more than 360 • over the wide frequency range. To verify effectiveness of the proposed elements, a reflectarray antenna with an offset feed is constructed by them, and wideband frequency characteristics are also confirmed at Ku-band numerically and experimentally.

show abstract

“…However, there is a major drawback that the reflectarray is usable only in narrow bandwidth because the reflection phase of each element greatly depends on the frequency. To improve the reflectarray performances, a lot of investigations have been so far reported in [5]- [10], and also have reported in [11]- [13] such as dipole type ; convex-shaped elements [14], Ω-shaped elements [15], and four axial symmetric elements [16]. Furthermore, GA-optimized conductor elements have been reported in [17]- [20] to realize better performance.…”

Section: Introductionmentioning

confidence: 99%

Arbitrarily-Shaped Reflectarray Resonant Elements for Dual-Polarization Use and Polarization Conversion

Deguchi

Higashi

Yamada

et al. 2018

IEICE Trans. Commun.

Self Cite

View full text Add to dashboard Cite

SUMMARY This paper proposes a genetic algorithm (GA) based design method for arbitrarily-shaped resonant elements that offer enhanced reflectarray antenna performance. All elements have the specified phase property over the range of 360 • , and also have dual-polarization and low cross-polarization properties for better reflectarray performance. In addition, the proposal is suitable for linear-to-circular polarization conversion elements. Thus, polarizer reflectarray elements are also presented in this paper. The proposed elements are validated using both numerical simulations and experiments.

show abstract

Omega-shaped resonant elements for dual-polarization and wideband reflectarray

Cited by 6 publications

References 2 publications

Broadband, low‐cost and low cross‐polarisation dual linearly polarised reflectarray antenna

Broadband, low‐cost and low cross‐polarisation dual linearly polarised reflectarray antenna

Omega-Shaped Geometries of Reflectarray Resonant Elements With Low Cross-Polarization for Wideband and Dual-Polarization Use

Arbitrarily-Shaped Reflectarray Resonant Elements for Dual-Polarization Use and Polarization Conversion

Contact Info

Product

Resources

About