Asymmetric Single Ridged Wave-guide Slot Antenna with A High Impedance Ground Plane

2006 ◽  
Author(s):  
Qiu-Rong Zheng ◽  
Yun-qi Fu ◽  
Nai-Chang Yuan
Keyword(s):  
Ground Plane ◽  
Wave Guide ◽  
Slot Antenna ◽  
High Impedance

UWB circularly polarised slot antenna with modified ground plane and L‐shaped radiator

2018 ◽  
Vol 54 (15) ◽  
pp. 918-920 ◽  
Author(s):  
Rui Xu ◽  
Jianying Li ◽  
Jie Liu ◽  
Shi Gang Zhou ◽  
Kun Wei
Keyword(s):  
Ground Plane ◽  
Slot Antenna

Mutual coupling reduction of low-profile monopole antennas on high-impedance ground plane

2002 ◽  
Vol 38 (16) ◽  
pp. 849 ◽  
Author(s):  
H. Xin ◽  
K. Matsugatani ◽  
M. Kim ◽  
J. Hacker ◽  
J.A. Higgins ◽  
...  
Keyword(s):  
Mutual Coupling ◽  
Ground Plane ◽  
High Impedance ◽  
Low Profile ◽  
Monopole Antennas ◽  
Mutual Coupling Reduction

scholarly journals 4 × 4 MIMO Antenna System for Smart Eyewear in Wi-Fi 5G and Wi-Fi 6e Wireless Communication Applications

Electronics ◽  
2021 ◽  
Vol 10 (23) ◽  
pp. 2936
Author(s):  
Ming-An Chung ◽  
Cheng-Wei Hsiao ◽  
Chih-Wei Yang ◽  
Bing-Ruei Chuang
Keyword(s):  
Ground Plane ◽  
Multiple Input Multiple Output ◽  
Antenna System ◽  
Slot Antenna ◽  
Actual Measurement ◽  
Antenna Efficiency ◽  
Mimo Antenna ◽  
Measurement Results ◽  
Working Frequency ◽  
Peak Gain

This paper proposes a small-slot antenna system (50 mm × 9 mm × 2.7 mm) for 4 × 4 multiple-input multiple-output (MIMO) on smart glasses devices. The antenna is set on the plastic temple, and the inverted F antenna radiates through the slot in the ground plane of the sputtered copper layer outside the temple. Two symmetrical antennas and slots on the same temple and series capacitive elements enhance the isolation between the two antenna ports. When both temples are equipped with the proposed antennas, 4 × 4 MIMO transmission can be achieved. The antenna substrate is made of polycarbonate (PC), and its thickness is 2.7 mm εr=2.85, tanδ=0.0092. According to the actual measurement results, this antenna has two working frequency bands when the reflection coefficient is lower than −10dB, its working frequency bandwidth at 4.58–5.72 GHz and 6.38–7.0 GHz. The proposed antenna has a peak gain of 4.3 dBi and antenna efficiency of 85.69% at 5.14 GHz. In addition, it also can obtain a peak gain of 3.3 dBi and antenna efficiency of 82.78% at 6.8 GHz. The measurement results show that this antenna has good performance, allowing future smart eyewear devices to be applied to Wi-Fi 5G (5.18–5.85 GHz) and Wi-Fi 6e (5.925–7.125 GHz).

Arrow Patch-Slot Antenna for 5G Lower Frequency Band Communications

2021 ◽  
Vol 35 (11) ◽  
pp. 1418-1419
Author(s):  
Yuhao Feng ◽  
Yiming Chen ◽  
Atef Elsherbeni ◽  
Khalid Alharbi
Keyword(s):  
Antenna Arrays ◽  
Coplanar Waveguide ◽  
Ground Plane ◽  
Base Stations ◽  
Slot Antenna ◽  
Main Beam ◽  
Antenna Element ◽  
Single Element ◽  
Rectangular Slot ◽  
Compact Size

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.

scholarly journals A Study of a Wide-Angle Scanning Phased Array Based on a High-Impedance Surface Ground Plane

2019 ◽  
Vol 2019 ◽  
pp. 1-10
Author(s):  
Tian Lan ◽  
Qiu-Cui Li ◽  
Yu-Shen Dou ◽  
Xun-Ya Jiang
Keyword(s):  
Antenna Array ◽  
Mutual Coupling ◽  
Ground Plane ◽  
Wide Angle ◽  
Impédance Surface ◽  
Impedance Surface ◽  
The Real ◽  
Reflection Phase ◽  
High Impedance ◽  
High Impedance Surface

This paper presents a two-dimensional infinite dipole array system with a mushroom-like high-impedance surface (HIS) ground plane with wide-angle scanning capability in the E-plane. The unit cell of the proposed antenna array consists of a dipole antenna and a four-by-four HIS ground. The simulation results show that the proposed antenna array can achieve a wide scanning angle of up to 65° in the E-plane with an excellent impedance match and a small S11. Floquet mode analysis is utilized to analyze the active impedance and the reflection coefficient. Good agreement is obtained between the theoretical results and the simulations. Using numerical and theoretical analyses, we reveal the mechanism of such excellent wide scanning properties. For the range of small scanning angles, these excellent properties result mainly from the special reflection phase of the HIS ground, which can cause the mutual coupling between the elements of the real array to be compensated by the mutual coupling effect between the real array and the mirror array. For the range of large scanning angles, since the surface wave (SW) mode could be resonantly excited by a high-order Floquet mode TM−1,0 from the array and since the SW mode could be converted into a leaky wave (LW) mode by the scattering of the array, the radiation field from the LW mode is nearly in phase with the direct radiating field from the array. Therefore, with help from the special reflection phase of the HIS and the designed LW mode of the HIS ground, the antenna array with an HIS ground can achieve a wide-angle scanning performance.

A polarization and band reconfigurable cross-slot antenna for multiband application

2019 ◽  
Vol 11 (10) ◽  
pp. 1054-1060
Author(s):  
Kapil Saraswat ◽  
A. R. Harish
Keyword(s):  
Electric Field ◽  
Ground Plane ◽  
Slot Antenna ◽  
Circularly Polarized ◽  
Design Concepts ◽  
Feed Line ◽  
Polarized Waves ◽  
Linearly Polarized ◽  
Microstrip Feed Line ◽  
Microstrip Feed

AbstractA polarization and band reconfigurable cross-slot antenna for multiband applications is presented in this paper. The antenna consists of four p–i–n diodes embedded in the cross-shaped slot in a ground plane and excited by a microstrip feed line. The p–i–n diodes are placed in such a way that they produce multiple bands, with linearly and circularly polarized (CP) radiation. By switching the states of the p–i–n diodes, the sense of rotation of the electric field in CP radiation can be reconfigured. The proposed structure can be configured to produce two bands that radiate linearly polarized waves or three bands, where, two are linearly polarized and one is CP. The proposed design concepts are validated bythe CST studio suite as well as measurementsare carried out on fabricated prototypes.

Sign in / Sign up

Export Citation Format

Share Document