Investigation of Hexagonal Ring Microstrip Antenna (original) (raw)
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International Journal of Microwave and Wireless Technologies, 2014
This paper proposes a novel and simple expression for effective radius of annular-ring microstrip antennas (ARMAs) obtained using a recently emerged optimization algorithm of artificial bee colony (ABC) in calculating the resonant frequency at dominant mode (TM11). A total of 80 ARMAs having different parameters related to antenna dimensions and dielectric constants was simulated in terms of the resonant frequency with the help of an electromagnetic simulation software called IE3D™ based on method of moment. The effective radius expression was constructed and the unknown coefficients belonging to the expression were then optimally determined with the use of ABC algorithm. The proposed expression was verified through comparisons with the methods of resonant frequency calculation reported elsewhere. Also, it was further validated on an ARMA fabricated in this study. The superiority of the presented approach over the other methods proposed in the literature is that it does not need any...
Simple analysis and design of annular ring microstrip antennas
IEE Proceedings H Microwaves, Antennas and Propagation, 1986
A simple analysis of thin annular-ring microstrip antennas (AR-MSA), along with a design technique that yields the optimum ring dimensions which maximises the radiation efficiency and the bandwidth, is presented in this paper. Using the cavity model, exact closed form solutions for the radiation fields are derived. The antenna fields distribution, resonance dimensions, radiation patterns, directivity, radiation conductance, quality factor and bandwidth are investigated for the different TM nm modes. AR-MSAs operated at the high order TM n2 modes are found to have better radiation properties and broader bandwidths than the corresponding disk-MSAs. A design table for the optimum ring dimensions for different types of the dielectric substrate material is also given in the paper.
Effect of cylindrical cavity enclosure on resonance frequency of annular ring microstrip antenna
2013 International Conference on Microwave and Photonics (ICMAP), 2013
The effect of cylindrical metallic enclosure on the resonant frequency of a suspended annular ring microstrip antenna (ARMSA) is investigated using HFSS simulation software and theoretically calculated using modal expansion cavity model and circuit theory concept. Theoretical result shows close agreement with simulated results. Variation in resonant frequency with air gap height and inner patch radius is also studied. The patch miniaturization of about 15% is achieved using cavity backed ARMSA.
Some investigations on annular ring microstrip antenna
IEEE Antennas and Propagation Society International Symposium (IEEE Cat. No.02CH37313), 2002
Some investigations on annular ring microstrip antenna Binod K Kanauji a & Baba u R Yi shvakarma Departme nt o f E lec tro ni cs Engi neering, In stitut e of T ec hn o logy, Bana ras Hind u Uni ve rs ity, Yaranasi 221 005
IJERT-Intensive Study of Resonance Frequency of Circular Patch Antenna With Additional Lobes
International Journal of Engineering Research and Technology (IJERT), 2014
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