FDTD analysis of wide-band circular and annular-ring patch antennas

• Published in: Proceedings of the Nineteenth National Radio Science Conference pp. 168 - 175
• Main Authors: Mahmoud, A.N., Abd Elrazzak, M.M., Mitkees, A.E.A., Elmikati, H.A.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 2002
• Subjects: Bandwidth; Broadband antennas; Feeds; Finite difference methods; Impedance; Microstrip antennas; Patch antennas; Probes; Receiving antennas; Time domain analysis
• ISBN: 9789775031723; 9775031729
• DOI: 10.1109/NRSC.2002.1022618

A finite-difference time-domain (FDTD) analysis of gap-coupled circular patch antennas (GCCPA) on isotropic substrates is presented. The return loss, the input impedance and the radiation pattern are determined. Similar analysis is performed for the stacked-gap coupled (SGC) annular-ring microstrip antennas. About 40% -10 dB bandwidth is achieved which is eight times more than that of the single annular-ring antenna. The results obtained by the FDTD method are found to be in good agreement with the published data.