A reciprocity approach for determining radiation patterns of patch antennas on circularly-cylindrical platforms

2002 ◽  
Author(s):  
D.H. Werner ◽  
G.D. Mouyis ◽  
R. Mittra
Keyword(s):  
Patch Antennas ◽  
Radiation Patterns

Alternating radiation patterns in patch antennas based MIMO terminals

2008 ◽  
Author(s):  
E. Rajo-Iglesias ◽  
O. Quevedo-Teruel ◽  
M. Sanchez-Fernandez ◽  
M.L. Pablo-Gonzalez
Keyword(s):  
Patch Antennas ◽  
Radiation Patterns

scholarly journals Radiation patterns of patch antennas on coated conducting cylinders

2021 ◽  
Vol 2134 (1) ◽  
pp. 012028
Author(s):  
V A Chechetkin ◽  
S N Shabunin ◽  
A N Korotkov
Keyword(s):  
Communication Systems ◽  
Dielectric Material ◽  
Computer Time ◽  
Analytical Form ◽  
Patch Antennas ◽  
Wearable Electronics ◽  
Radiation Patterns ◽  
Fifth Generation ◽  
Antenna Directivity ◽  
The Cost

Abstract The development of the Internet of Things and communication systems of the fifth generation leads to the need to place many antenna elements in a limited volume. Therefore, wearable electronics antennas are often located directly on the device body. Such surfaces can often be thought of as a conducting cylinder covered with a dielectric material. The task of analysing the radiation patterns of antennas located on such surfaces becomes urgent. This paper shows a method for analysing antenna directivity diagrams using the Green’s functions method of cylindrical layered media. This method allows to obtain in an analytical form the expressions for the analysis of such structures, which makes it possible to reduce the cost of computer time in modelling. The presented results show what kind of distortions are introduced into the radiation pattern of antennas located on a cylinder compared to an antenna located on a flat surface.

scholarly journals Mutual Coupling Reduction between Patch Antennas Using Meander Line

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Qian Li ◽  
Chong Ding ◽  
Ruichao Yang ◽  
Mingtao Tan ◽  
Gangxiong Wu ◽  
...  
Keyword(s):  
Antenna Array ◽  
Microstrip Antenna ◽  
Mutual Coupling ◽  
Ground Plane ◽  
Patch Antennas ◽  
Radiation Patterns ◽  
Simple Method ◽  
Microstrip Patch ◽  
Microstrip Antenna Array ◽  
Meander Line

Meander lines (MLs) in two configurations are presented to reduce the mutual coupling (MC) between two microstrip patch antenna elements. Inserting a slot in the ground plane between the antenna elements is a simple method to reduce the MC, while adding the MLs in the slot of the ground can further reduce the MC. In the first configuration, one ML is inserted in the slot of the ground and a maximum MC reduction of 39 dB throughout the −10 dB bandwidth is achieved. What’s more, the radiation patterns are not changed compared with the dual-element microstrip antenna array with a slotted ground. For the second configuration, two MLs are added in the slot of the ground. It is found that a maximum isolation of 53 dB can be obtained. However, the radiation patterns are slightly changed compared with the dual-element microstrip antenna array with a slot in the ground. Meanwhile, the measured peak gain and efficiency of the dual-element microstrip antenna array in the two configurations are given. Along with this paper, several prototypes have been fabricated and measured. The simulated results are in good accordance with the measurements, which are presented to verify that MC reduction can be achieved between microstrip antenna elements by adding the MLs in the slotted ground.

A Simple Decoupling Method for Patch Antennas with Restored Radiation Patterns

2021 ◽  
Author(s):  
Changwu Tong ◽  
Nan Yang ◽  
Zhiwei Wu ◽  
Kwok Wa Leung ◽  
Zhe Chen
Keyword(s):  
Patch Antennas ◽  
Radiation Patterns ◽  
Decoupling Method

scholarly journals Accurate Analysis of Practical 3D Periodic Leaky-Wave Patch Antennas

2008 ◽  
Vol 2008 ◽  
pp. 1-6
Author(s):  
Mohammad R. Zunoubi ◽  
Hassan A. Kalhor
Keyword(s):  
Three Dimensional ◽  
Design Tool ◽  
Antenna Design ◽  
Patch Antennas ◽  
Analysis Method ◽  
Radiation Patterns ◽  
Scattering Parameters ◽  
Leaky Wave ◽  
Accurate Analysis ◽  
Finite Integral

This paper presents a new analysis method based on the finite integral technique (FIT) of practical three-dimensional leaky-wave antennas comprised of a finite number of patches arranged in arrays. Radiation patterns and scattering parameters are calculated and compared with corresponding measured results to demonstrate the adequacy and the accuracy of the proposed method. The technique is then used as an antenna design tool to obtain the desired radiation patterns and beam scanning by selective choice of array elements dimensions, spacing, and substrate parameters.

scholarly journals Dual Band and Beam-Steering Antennas Using Reconfigurable Feed on Sierpinski Structure

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Seonghun Kang ◽  
Chang Won Jung
Keyword(s):  
Beam Steering ◽  
Scale Factor ◽  
Dual Band ◽  
Reflection Coefficients ◽  
Patch Antennas ◽  
Radiation Patterns ◽  
Self Similarity ◽  
5 Ghz ◽  
Microwave Substrate ◽  
Dual Bands

Fractal patch antennas based on the Sierpinski structure are studied in this paper. The antennas operate at dual bands (around 2 and 5 GHz) and are designed to steer the beam directions at around 5 GHz band (the first harmonic). The antennas use reconfigurable triple feeds on the same antenna plane to have three beam directions. The same scale factor defines the geometrical self-similarity of the Sierpinski fractal. The proposed antennas are fabricated through three iterations from 1st order to 3rd order and utilize FR-4 (εr= 4.4) for the microwave substrate. The performances of the antennas, such as reflection coefficients and radiation patterns are verified by simulation and measurement. The results show that the properties of the proposed antennas in three orders are similar.

scholarly journals Sidelobe Level Optimization of Rectangular Microstrip Patch Antenna Array using Binary Coded Genetic Algorithm

2020 ◽  
Vol 9 (4) ◽  
pp. 2053-2056
Keyword(s):  
Genetic Algorithm ◽  
Patch Antenna ◽  
Communication Systems ◽  
Side Lobe ◽  
Side Lobe Level ◽  
Patch Antennas ◽  
Radiation Patterns ◽  
Maximum Reduction ◽  
Microstrip Patch ◽  
Rectangular Patch

In modern world, communication systems requires development of low cost, minimal weight, and low profile antennas which are capable of maintaining high performance over wide range of frequencies. Patch antenna is one such antenna which fulfills the demands of current communication systems. The widely used microstrip patch antennas are rectangular patch antennas. This paper presenting the application of binary coded Genetic Algorithm (BGA) which is applied to the rectangular patch microstrip antenna with uniform linear arrays. The fitness function of GA is maximum reduction in peak side lobe level of the radiation pattern of the antenna with maximum reduction in the side lobe level and also achieved the minimum possible null to null beam width, the resultant radiation patterns for both before GA and after GA of microstrip array are compared. The radiation patterns are presented for 20,50,100 number of elements. All the simulated results are obtained by using MATLAB software.

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