FDTD analysis of a compact, H-shaped microstrip patch antenna
ABSTRACT The characteristics of a small antenna using an H-shaped
microstrip patch are studied. Significant reduction of antenna size can
be realized when the H-shaped patch is used instead of the conventional
rectangular microstrip patch antenna. The theoretical analysis is
carried out based on the finite-difference time-domain (FDTD) method.
The FDTD programs are developed and validated by available measurement
results. The effects of various antenna parameters on the resonant
frequency and radiation patterns are shown. Several design curves are
presented and the electric current distributions on the patch and ground
plane are described. This antenna is suitable for applications where
small size and broad beamwidth are required
- SourceAvailable from: Prabhakar Singh[Show abstract] [Hide abstract]
ABSTRACT: In the present paper notch loaded shorted microstrip patch antenna has been analysed using cavity model. The proposed antenna shows dual band operation which depends on notch dimensions as well as shorting wall. The frequency ratio is found to be 1.5278 for the notch loaded rectangular patch, while in notch loaded shorted patch, the frequency ratio varies from 2.9764 to 2.725 for increasing value of notch width and it is almost invariant with notch depth. Further a slot loaded shorted patch antenna shows the dual frequency nature with the frequency ratio 1.7. The theoretical results are compared with IE3D simulation as well as reported experimental results.
- [Show abstract] [Hide abstract]
ABSTRACT: With developing technology, interest in wireless communication in recent years leads to rapid developments in antenna technology. Particularly, personal portable devices have seen intense interest. In addition, aircraft, space vehicles, radar, satellite and missile applications are growing at a greater rate. Therefore, Microstrip Antennas (MSA) which used in these devices have gained importance. Compact Microstrip Antennas are created by modification of traditional antenna?s shapes which are rectangle, circle and triangle. The H-shaped MSA are formed by modification of the Rectangular Microstrip Antenna (RMSA)�In this study, the H-Shaped MSAs with different physical and electrical parameters have designed. These antennas have been simulated in XFDTD which is a 3-D simulation program. A new equation which approximately gives the resonance frequency values obtained by simulations has been trying to find by using Differential Evolution Algorithm (DEA). Beside this, coefficients of the equation have been found by optimization used DEA. Finally, a new and simple equation which gives the close result of Simulation Programs has been found.11/2009, Degree: MSc, Supervisor: Ali Akdagli
- [Show abstract] [Hide abstract]
ABSTRACT: In this paper, the wave concept iterative procedure (WCIP) is presented to analyse the H-shaped patch antenna circuits. The principles of the WCIP is described, the advantages of the WCIP is discussion. The two-dimension Fast Fourier Transformation (2D-FFT) is used to simplify calculations and to take the excellence of the spatial and spectral domain for analysis. The numerical results show a good agreement compared with the HFSS simulation data, which illustrates the efficiency and correctness of WCIP.