A Wideband Reconfigurable Dual-Branch Helical Reflectarray Antenna for High-Power Microwave Applications

Kong, Ge-Xing; Li, Xiangqiang; Wang, Qingfeng; Zhang, Jianqiong

doi:10.1109/tap.2020.3016379

Cited by 44 publications

(18 citation statements)

References 23 publications

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“…The comparison on some previous reports of high-power reflectarray antennas is shown in Table III. The proposed reflectarray antenna shows higher power capacity than the other three designs [7], [19], [20]. And the proposed reflectarray antenna shows higher aperture efficiency and lower side-lobe level than the designs in [19] and [20].…”

Section: Comparison With Other High-power Reflectarray Antennasmentioning

confidence: 84%

“…2 (b). The maximum electric field is lower than that in [14], but is still higher than that of the high power element [7]. The design with no triple junction can improve the power capacity [16].…”

Section: A Element Geometrymentioning

confidence: 91%

“…The X-band feed horn is located at the height of 300 mm and the C-band feed horn is located at the height of 255 mm above the reflectarray aperture. The required phase shift over the reflectarray aperture can be calculated by the ray-tracing method [7],…”

Section: Reflectarray Antenna Experiments and Simulationsmentioning

confidence: 99%

“…With the development of high-power technology, the research on high-power array antennas promotes the applications for various military and civilian satellite communications [1]. The available high-power array antennas mainly focus on increasing the operating frequency [2], [3], improving the power capacity [4], [5], realizing beam scanning [6], and extending the bandwidth [7]. These technologies promote the development of high-power microwave antennas, but they can only operate in one frequency band.…”

Section: Introductionmentioning

confidence: 99%

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A Dual-Band Circularly Polarized Elliptical Patch Reflectarray Antenna for High-Power Microwave Applications

Kong

Wang

et al. 2021

IEEE Access

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The demand for multi-band high-power antennas, which have been rarely reported, becomes urgent in high-power microwave field. To meet the demand, a C/X dual-band high-power circularly polarized patch reflectarray antenna is proposed in this paper. Two main technologies are adopted to make the proposed antenna realize the high-power feature. Firstly, the elliptical patch with no abrupt structure is proposed to be the dual-band reflecting element to mitigate the electric field concentration. Secondly, the elliptical patches are proposed to be embedded into substrate to avoid the triple junction. The proposed dual-band reflecting element is designed by arranging two embedded elliptical patches with different sizes in a square lattice grid. The larger elliptical patch operates in C-band and the smaller one works in X-band. The elliptical patches are proposed to be rotated to realize continuous 360 o phase response in both bands. By optimizing the thickness of substrate, the element spacing, and the size of the patches, the dual-band element shows good reflection amplitude and phase response and low mutual coupling performance. An antenna prototype with the aperture size of 345 mm × 345 mm is simulated and measured. The measured radiation results of the designed reflectarray antenna are in good agreement with simulations in both C-band and X-band. The measured gain of the antenna at 6.2 GHz is 24.6 dBi, and at 9.3 GHz is 27.8 dBi. Fullwave simulations show that the power capacity of the antenna at 6.2 GHz is about 10.2 MW, and at 9.3 GHz is about 3.9 MW in air condition. The low mutual coupling performance of the proposed antenna is verified both in element level and array level. All of the results show that the proposed antenna has the merits of high-power capacity, dual-band, and low mutual coupling.

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Section: Comparison With Other High-power Reflectarray Antennasmentioning

confidence: 84%

Section: A Element Geometrymentioning

confidence: 91%

Section: Reflectarray Antenna Experiments and Simulationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Dual-Band Circularly Polarized Elliptical Patch Reflectarray Antenna for High-Power Microwave Applications

Kong

Wang

et al. 2021

IEEE Access

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“…Reflectarrays have been extensively studied in the past few decades. Current research focuses on either improving the performance in terms of large bandwidth [4], [5], high gain [6], [7] and high efficiency [8], or exploring new functionalities such as dual polarization [9], [10], circular polarization [11], [12], multi-band [13], [14], multi-beam [15], [16] and dynamic beam-steering [3], [17], [18].…”

Section: Introductionmentioning

confidence: 99%

Dual Circularly Polarized 3-D Printed Broadband Dielectric Reflectarray With a Linearly Polarized Feed

Cheng

Hao

McGhee

et al. 2022

IEEE Trans. Antennas Propagat.

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A broadband dual circularly polarized (dual-CP) reflectarray based on three-dimensional (3D) printed dielectric materials is proposed in this paper. A novel 3D dielectric array element that enables the broadband linearly polarization (LP) to CP transformation is proposed. The unit cell consists of two orthogonal dielectric cuboids, which adjust the phases of the two orthogonal LP waves independently and then combine them into a CP wave. The innovative unit cell design provides an extra degree of freedom in varying the geometries of the array elements in all three dimensions, which enables us to independently control the phases of the two LP waves. This maintains an equal amplitude and 90 • phase difference condition across the entire reflectarray surface, realizing a broadband and high gain LP-CP reflectarray. The placement of the feed is also optimized to achieve the highest aperture efficiency. Finally, an off-set reflectarray was designed and fabricated using lost-cost 3D printing. The reflectarray is able to provide both left-hand circular polarization (LHCP) and right-hand circular polarization (RHCP), with just an LP feed. The measurements agree well with simulated results where the maximum realized gain and directivity at 34 GHz are measured as 27.9 dBi and 28.1 dBi, respectively. The measured 3-dB gain bandwidth and aperture efficiency are 30% and up to 38%, respectively. More importantly, a broad 3-dB axial ratio (AR) bandwidth greater than 40% has been achieved for both LHCP and RHCP, covering almost the entire frequency band of interest, ranging from 26 to 40 GHz.

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A shared aperture antenna with reconfigurable pattern by common and differential modes

Chen,

Hu,

Lei

et al. 2023

Micro & Optical Tech Letters

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In this letter, a compact pattern‐reconfigurable (PR) antenna for indoor communication is proposed, which can provide one conical, one broadside, and two tilted patterns. The proposed antenna comprises a shared radiation patch with two highly isolated ports and a reconfigurable feeding network. By activating each port independently, a dipole mode with broadside pattern and a monopole mode with conical pattern are acquired, respectively. Meanwhile, inspired by the theory of common and differential modes, two tilted patterns toward and are realized by combining dipole and monopole modes. As a result, four‐type reconfigurable patterns can be obtained. To realize reconfigurability, a functional reconfigurable feeding network is designed with innovation. The proposed antenna is fabricated and measured. The measured overlapped −10 dB impedance bandwidth is 3.28–3.71 GHz (12.3%), and the peak radiation efficiency is superior to 82.7%. The experimental results indicate that the proposed PR antenna has a wide bandwidth and stable radiation patterns, which exhibits attractive potential for fifth‐generation indoor communication in sub‐6 GHz.

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A Wideband Reconfigurable Dual-Branch Helical Reflectarray Antenna for High-Power Microwave Applications

Cited by 44 publications

References 23 publications

A Dual-Band Circularly Polarized Elliptical Patch Reflectarray Antenna for High-Power Microwave Applications

A Dual-Band Circularly Polarized Elliptical Patch Reflectarray Antenna for High-Power Microwave Applications

Dual Circularly Polarized 3-D Printed Broadband Dielectric Reflectarray With a Linearly Polarized Feed

A shared aperture antenna with reconfigurable pattern by common and differential modes

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