A reduced surface-wave twin arc-slot antenna element on electrically thick substrates

A compact size arrow shaped patch in a rectangular slot antenna is designed for 5G communications in the lower 3 to 6 GHz band. The antenna element is fed through a coplanar waveguide with partial ground plane for better impedance matching with 50 Ohms across the entire band. The maximum gain of a single element is 3.8 dB at 3.7 GHz, while for linear arrays of 5 and 15 elements with uniform excitation the maximum gains are 10.9 dB and 16 dB, respectively. The 5 and 15 elements arrays provide scanning range with no significant degradation of the main beam up to 30˚ and 45˚, respectively. The properties of this antenna element makes it suitable for 5G wireless mobile devices and miniaturized base stations antenna arrays.

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Mutual Coupling Reduction of Slot Antenna Array by Controlling Surface Wave Propagation

IEEE Transactions on Antennas and Propagation ◽

10.1109/tap.2018.2883524 ◽

2019 ◽

Vol 67 (2) ◽

pp. 1352-1357 ◽

Cited By ~ 11

Author(s):

Jeet Ghosh ◽

Debasis Mitra ◽

Shouvick Das

Keyword(s):

Wave Propagation ◽

Surface Wave ◽

Antenna Array ◽

Mutual Coupling ◽

Slot Antenna ◽

Surface Wave Propagation ◽

Mutual Coupling Reduction

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High-Isolation 3.5 GHz Eight-Antenna MIMO Array Using Balanced Open-Slot Antenna Element for 5G Smartphones

IEEE Transactions on Antennas and Propagation ◽

10.1109/tap.2019.2902751 ◽

2019 ◽

Vol 67 (6) ◽

pp. 3820-3830 ◽

Cited By ~ 41

Author(s):

Yixin Li ◽

Chow-Yen-Desmond Sim ◽

Yong Luo ◽

Guangli Yang

Keyword(s):

Slot Antenna ◽

Antenna Element ◽

High Isolation

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Design of Wideband Slot Antenna Array with Stereoscopic Differentially Fed Structures

International Journal of Antennas and Propagation ◽

10.1155/2019/9285476 ◽

2019 ◽

Vol 2019 ◽

pp. 1-14 ◽

Cited By ~ 1

Author(s):

Guang Sun ◽

Ge Gao ◽

Tingting Liu ◽

Yi Liu ◽

Hu Yang

Keyword(s):

Antenna Array ◽

High Gain ◽

Radar System ◽

Slot Antenna ◽

Impedance Bandwidth ◽

Antenna Element ◽

Radiation Characteristics ◽

Wide Bandwidth ◽

Feeding Structure

In this paper, a wideband slot antenna element and its array with stereoscopic differentially fed structures are proposed for the radar system. Firstly, a series of slots and a stereoscopic differentially fed structure are designed for the antenna element, which makes it possess a wide bandwidth, stable radiation characteristics, and rather high gain. Moreover, the stereoscopic feeding structure can firmly support the antenna’s radiation structure and reduce the influence of feeding connectors on radiating performance. Secondly, a 4 × 4 array is designed using the proposed antenna element. And a hierarchical feeding network is designed for the array on the basis of the stereoscopic differentially fed structure. For validation, the antenna element and 4 × 4 array are both fabricated and measured: (1) the measured −10 dB impedance bandwidth of the antenna element is 62% (6.8–12.9 GHz) and the gain within the entire band is 5–9.7 dBi and (2) the measured −10 dB impedance bandwidth of the array is approximately 50% (7 to 12 GHz) with its gain being 14–19.75 dBi within the entire band. Notably, measured results agree well with simulations and show great advantages over other similar antennas on bandwidth and gain.

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