Central-Symmetry Decoupling Technique for Circularly-Polarized MIMO System of Tightly Packed Chinese-character Shaped Patch Antennas

Chung, Kwok L.; Cui, Aiqi; Ma, Meng-Di; Feng, Botao; Li, Y.; Xu, Qian; Chen, K.; Ren, Cheng; Shen, Xubang; Huang, You-Huo; Huang, Xiaojun; Chen, X.; Pei, Huiling; An, Xing; Meng, Qi; Zhu, S.; Xue, Wei; Ren, Yuxin; Wang, Z.; Yang, Qichao; Liu, S.; Xu, Kai‐Da; Zhang, A.; Çiydem, Mehmet; Miran, Emre Alp; Jiang, Tao; Yu, Lu; Xing, Jichuan; Yu, Xiaodong; Du, Z.; Zhi, Guoliang; Zhao, Yan-Wen; Tang, Jiazhi; Li, F.; Zheng, Jianfeng; Chen, J.; Peng, Fan; Liu, X.; Zhang, J.; Zhang, M.; Qi, Wu; Fang, Fu-Kuan; Xia, William; Xing, Lei; Chen, Y.-L.; Sui, Yizhen; Yang, Zhanping; Qu, Xiaodong; Zong, Weijian; Ashish, Junuthula; Rao, A. Pramesh; Jensen, Ole Kiel; Ji, Yanliang; Zhang, F.; Fan, Wei; Tang, Hongjun; Zheng, Xia; Wang, L.; Gao, Song; Luo, Jiankai; Li, C.; Sun, Zhanfeng; Jin, Zhejun; Liu, T.; Chernjgor, Leonid F.; Zheng, Ying; Jiang, Yun; Huang, Leiyan; Huang, Zhiping; Ye, Y.; Liu, B.; Yuan, Wenqiang; Yuan, Naichang; Lin, Wei; Kang, Rong; He, Qian; Chen, Z.; Huang, Brent E. Little and Wei-Ping

doi:10.47037/2021.aces.j.36091

Cited by 22 publications

(3 citation statements)

References 13 publications

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“… References Characteristics Method of decoupling Edge to edge element Spacing Complexity of decoupling method Decoupling level (pol. isolation) (dB) Frequency (GHz) Antenna type 51 Modified array antenna decoupling surface Defected ground structures 0.034 λ 0 High with 3D structure and two-stage design 26 3.7 Patch 52 Ceramic superstrate-based decoupling method 0.28 λ 0 Medium with 3D structure 25 3.5 Dipole 53 Central-symmetry decoupling technique 0.11 λ 0 Low 22 2.5 Patch 54 Mixed radiation modes 0.11 λ 0 Medium with 3D structure 23 2.5 Patch 55 Decoupling dielectric stubs 0.27 λ 0 Medium with 3D structure 20 4.75 Patch 56 Frequency selective surface 0.22 λ 0 Medium with 3D structure 18 4 Patch 57 Array-antenna decoupling surface 0.0...…”

Section: Discussionmentioning

confidence: 99%

Design and implementation of elliptical mantle cloaks for polarization decoupling of two tightly spaced interleaved co-frequency patch array antennas

Masoumi

Kazemi

Fathy

2023

Sci Rep

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In this paper, we utilized the method of mantle cloaking to decouple/isolate two densely packed interleaved patch array antennas operating at the same frequency but with orthogonal polarizations. To reduce mutual coupling between the adjacent elements, vertical strips, as a type of elliptical mantle cloaks, are located in close proximity to the patches. At the operating frequency of f0 = 3.7 GHz, the edge-to-edge spacing of the elements of the two interleaved arrays is less than λ0/80 (1 mm) and the center-to-center spacing of each array element is 0.7 λ0 (57 mm). The proposed design is implemented using 3D printing technology, and its performance in terms of return loss, efficiency, gain, radiation patterns, and isolation is measured for evaluation. The results show the radiation characteristics of the arrays are perfectly retrieved after cloaking similar to the isolated arrays. Decoupling tightly spaced patch antenna arrays on a single substrate paves the way to achieve miniaturized communication systems with full duplex operation or dual polarization communication.

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Section: Discussionmentioning

confidence: 99%

Design and implementation of elliptical mantle cloaks for polarization decoupling of two tightly spaced interleaved co-frequency patch array antennas

Masoumi

Kazemi

Fathy

2023

Sci Rep

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“…From the developments of shielding structures, shielding effectiveness analysis methods, and shielding effectiveness measurements, we think the wide-band shielding structures and shielding effectiveness analysis and measurement with a high power pulse will be an interesting topic for EMP, EMI, and EMC studies. The proposed shielding structures and analysis method can also be used in MIMO engineering systems [39][40][41][42][43][44][45][46] to analyze shielding effectiveness.…”

Section: Discussionmentioning

confidence: 99%

Recent Developments of Shielding Effectiveness for Electronics and Information Devices

Jiang

et al. 2023

ACES Journal

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With the increase wireless communications, many wireless devices and equipment have been invented for special applications, resulting in mutual interference that might destroy the systems or distort signal in-transmission. One of the effective methods to reduce or eliminate interference is to devise a shielding to block the unwanted interference in between the approaching systems, circuits, devices, etc. Thus, shielding and estimation of its effectiveness are very important in order to protect the information devices from potential interference and to improve the performance of information equipment. In this survey, we present the recent developments of the shielding and shielding effectiveness techniques and methods, and give a design for an electromagnetic shielding structure.

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“…Circularly polarized (CP) antennas have been widely used in recent years due to their stable signal transmission and reception characteristics in bad weather,polarization rotation and flexible directionality between transmitter and receiver [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. For satellite and global positioning system (GPS) applications, to improve the accuracy and flexibility of GPS systems, there is a high demand to get thin, lightweight and high gain CP antennas [5,20,21].…”

Section: Introductionmentioning

confidence: 99%

A Simple Single-fed Left/Right-Hand Circular Polarization Antenna for GPS Applications

Meng

Huang

2023

ACES Journal

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A simple single-feeding circular polarization (CP) antenna with controlled left/right-hand characteristics is proposed and investigated for GPS L2 band applications. To achieve the CP characteristics, four arc-shaped cutting corners with different sizes are removed from a circular patch to give 90∘ phase difference to implement CP. By adjusting the radius of the four arc-shaped cutting corners, the antenna can be controlled to get left/right-hand circular polarization (L/RHCP). The proposed CP antenna is modeled, simulated, fabricated and measured, and the results demonstrate that the antenna provides an axial ratio beamwidth over 180 MHz, and impedance bandwidth of 20 MHz for L/RHCP. Additionally, the devised CP antennas have good directional radiating patterns, making them suitable for GPS L2 band applications.

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Central-Symmetry Decoupling Technique for Circularly-Polarized MIMO System of Tightly Packed Chinese-character Shaped Patch Antennas

Cited by 22 publications

References 13 publications

Design and implementation of elliptical mantle cloaks for polarization decoupling of two tightly spaced interleaved co-frequency patch array antennas

Design and implementation of elliptical mantle cloaks for polarization decoupling of two tightly spaced interleaved co-frequency patch array antennas

Recent Developments of Shielding Effectiveness for Electronics and Information Devices

A Simple Single-fed Left/Right-Hand Circular Polarization Antenna for GPS Applications

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