scholarly journals RESONANT FREQUENCY OF CIRCULAR MICROSTRIP ANTENNA BASED ON BPNN

2021 ◽  
Vol 6 (1) ◽  
pp. 1-5
Author(s):  
Seyyed Ahmad Mousavi ◽  
Zahra Atlasbaf
Keyword(s):  
Resonant Frequency ◽  
Microstrip Antenna ◽  
Circular Microstrip Antenna

Analysis of a circular microstrip antenna on isotropic or uniaxially anisotropic substrate using neurospectral approach

2013 ◽  
Vol 33 (1/2) ◽  
pp. 567-580 ◽  
Author(s):  
Sami Bedra ◽  
Siham Benkouda ◽  
Tarek Fortaki
Keyword(s):  
Resonant Frequency ◽  
Quality Factor ◽  
Microstrip Antenna ◽  
Numerical Results ◽  
Spectral Domain ◽  
Quality Factors ◽  
Resonant Frequencies ◽  
Content Type ◽  
Anisotropic Substrate ◽  
Circular Microstrip Antenna

Purpose – The paper aims to propose an artificial neural network (ANN) in conjunction with spectral domain formulation for fast and accurate determination of the resonant frequency and quality factor of circular microstrip antenna printed on isotropic or anisotropic substrate. This neurospectral approach reduces the problem complexity. Design/methodology/approach – The moment method implemented in the spectral domain provides good accuracy but its computational cost is high due to the evaluation of the slowly decaying integrals and the iterative nature of the solution process. The paper introduces the electromagnetic knowledge combined with ANN in the analysis of circular microstrip antenna on isotropic or uniaxially anisotropic substrate to reduce the complexity of the spectral approach and to minimize the CPU time necessary to obtain the numerical results. Findings – The resonant frequency results obtained from the neural model are in very good agreement with the experimental and theoretical results available in the literature. Finally, numerical results for the substrate anisotropy effect on the resonant frequency, quality factor and radiation pattern are also presented. Originality/value – The paper develops fast and accurate model based on ANN technique to calculate the resonant frequencies and quality factors of circular microstrip antennas. ANN is used to model the relationship between the parameters of the microstrip antenna and the resonant frequencies and quality factors obtained from the spectral domain approach. This relatively simple model allows designers to predict accurately the resonant frequencies and quality factors for a given design without having to develop or run the spectral method codes themselves. The main advantages of the method are: less computing time than the spectral model, results with accuracy equivalent to that of full-wave models and cost effectiveness, since the client can use a simple PC for implementation. Another advantage of the proposed ANN model is that it takes into account the uniaxial anisotropy in the substrate without increasing the network size. This is done by combining ANN with electromagnetic knowledge.

Design of a Miniaturization Microstrip Antenna and Cavity Model Analysis

2013 ◽  
Vol 340 ◽  
pp. 427-430
Author(s):  
Yun Xing Yang ◽  
Hui Chang Zhao ◽  
Si Chen ◽  
Yong Chen
Keyword(s):  
Resonant Frequency ◽  
Microstrip Antenna ◽  
Bessel Functions ◽  
Simple Structure ◽  
Engineering Application ◽  
Model Analysis ◽  
Cavity Model ◽  
Theory Analysis ◽  
Magnetic Wall ◽  
Circular Microstrip Antenna

On the demand of miniaturization of antenna, this paper presents a circular microstrip antenna whose part of its port is sealed. Changing part of its magnetic wall into electric wall, then a decimals mode which exist between andis proposed. Elaborating the theory of reducing the resonant frequency with Bessel functions characteristics and resonance formula of circular microstrip antenna. Using the HFSS for simulation, the resonant frequency of the antenna change from 3.0 GHz to 1.2 GHz. The results prove the reliability of theory analysis. The size could be reduced nearly 60% compared with ordinary antenna. The antenna has a simple structure and can be applied to engineering application.

scholarly journals Analysis and Design of Circular Shape Microstrip Antenna for Wireless Communication System

2011 ◽  
pp. 113-119
Author(s):  
Sachin Rai ◽  
D. K. Srivastav
Keyword(s):  
Resonant Frequency ◽  
Cylindrical Cavity ◽  
Microstrip Antenna ◽  
Ground Plane ◽  
Transverse Magnetic ◽  
Antenna Element ◽  
Practical Result ◽  
Analysis And Design ◽  
Circular Shape ◽  
Circular Microstrip Antenna

The circular microstrip antenna element is formed by radiating disk closely spaced above a ground plane. It is modeled as a cylindrical cavity with magnetic walls which can be resonant in the transverse magnetic modes. This circular shape microstrip antenna is analysed using cavity model and fields within the cylindrical cavity, radiation pattern and resonant frequency have been calculated. In this paper the circular microstrip antenna is designed at resonant frequency r f = 2.5 GHz. A suitable substrate of relative permittivity r 􀁈 = 4.2 and of thickness h = 1.6 mm is used to design the antenna. The simulation of this microstrip antenna is done on IE3D software and matlab. At last the simulation result and practical result of return loss are compared.

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