An enhanced cavity model for microstrip antennas

2004 ◽  
Vol 40 (6) ◽  
pp. 520-523 ◽  
Author(s):  
Yeow-Beng Gan ◽  
Chee-Parng Chua ◽  
Le-Wei Li
Keyword(s):  
Microstrip Antennas ◽  
Cavity Model

scholarly journals Analytical Model for Predesigning Probe-Fed Hybrid Microstrip Antennas

2018 ◽  
Vol 2018 ◽  
pp. 1-13
Author(s):  
Nilson R. Rabelo ◽  
J. C. da S. Lacava ◽  
Alexis F. Tinoco Salazar ◽  
P. C. Ribeiro Filho ◽  
D. C. Nascimento ◽  
...  
Keyword(s):  
Analytical Model ◽  
Excellent Agreement ◽  
Resonant Cavity ◽  
Cost Effective ◽  
Microstrip Antennas ◽  
Design Criterion ◽  
Cavity Model ◽  
Analysis Methodology ◽  
Proposed Model ◽  
Effective Analysis

Based on the equivalent resonant cavity model, an effective analysis methodology of probe-fed hybrid microstrip antennas is carried out in this paper, resulting in a better understanding of the parameter interrelations affecting their behavior. With that, a new design criterion focused on establishing uniform radiation patterns with balanced 3 dB angles is proposed and implemented. Results obtained with the proposed model closely matched HFSS simulations. Measurements made on a prototype antenna, manufactured with substrate integrated waveguide (SIW) technology, also showed excellent agreement, thus validating the use of the cavity model for predesigning hybrid microstrip antennas in a simple, visible, and time- and cost-effective way.

Optimization of Printed Antennas Using Genetic Algorithm Coupled with Improved Cavity Model

Frequenz ◽  
2012 ◽  
Vol 66 (7-8) ◽  
Author(s):  
Vahid Sathi ◽  
Nasrin Ehteshami ◽  
C. Ghobadi
Keyword(s):  
Genetic Algorithm ◽  
Optimization Method ◽  
Microstrip Antennas ◽  
Model Analysis ◽  
Measured Data ◽  
Cavity Model ◽  
Point Location ◽  
Printed Antennas ◽  
Feed Point ◽  
Microwave Cad

AbstractAn accurate electromagnetic optimization tool for designing rectangular and circular microstrip antennas is proposed. This optimization method is based on the improved cavity model analysis in conjunction with the well-known genetic algorithm, which is employed to optimize the dimensions and feed point location of rectangular and circular microstrip antennas. Results obtained by this technique agree quite well with the measured data and the data obtained by the FEM based software HFSS by ANSOFT. This technique can be fruitfully used in microwave CAD applications.

scholarly journals Rectangular Microstrip Antennas – A Tutorial

2020 ◽  
Vol 19 ◽  
Keyword(s):  
Dielectric Constant ◽  
Structure Optimization ◽  
Microstrip Antennas ◽  
Antenna Design ◽  
Simulation Tool ◽  
Cavity Model ◽  
Full Wave ◽  
Antenna Directivity ◽  
Before And After ◽  
And Training

In this paper a full review and tutorial of Rectangular Microstrip Antennas (RMA) are carried out. The most important models of this sort of antennas are analyzed in this article and are present in a relevance order: transmission line, cavity model and full-wave. With the aim of supporting educational purposes and training in antenna design, some useful response plots are included and compared with full-wave simulations in both cases, before and after the structure optimization. The main results of this work were contrasted using returning losses and antenna directivity, for some practical variations of the dielectric constant and thickness of the substrate. Antenna patterns and return losses were also simulated and optimized using a full-wave simulation tool

A Cross Polarization Suppressed Sequential Array with L-Probe Fed Rectangular Microstrip Antennas

2011 ◽  
Vol E94-B (9) ◽  
pp. 2653-2655
Author(s):  
Kazuki IKEDA ◽  
Keigo SATO ◽  
Ken-ichi KAGOSHIMA ◽  
Shigeki OBOTE ◽  
Atsushi TOMIKI ◽  
...  
Keyword(s):  
Microstrip Antennas ◽  
Cross Polarization
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