Title :
Theoretical evaluation of resonant frequencies of a hemispherical-circular microstrip antenna
Author :
De, Asok ; Chakravarty, Tapas
Author_Institution :
Dept. of Electron. & Telecommun. Eng., Delhi Coll. of Eng., India
Abstract :
We present a novel and simple method of deducing the resonant frequencies for a circular patch antenna mounted on a sphere. A particular case in this class of antenna namely hemispherical-circular antenna (θ=90 deg.) is investigated. It is shown that dominant mode resonance is tuned up in frequency by approximately 20%. The validity of this method is also evaluated. This class of MSA can be a very useful tool for EMC applications since this has a significantly high polarisation purity compared to other conformal antennas like planar circular patch antennas.
Keywords :
conformal antennas; electromagnetic compatibility; electromagnetic interference; electromagnetic wave polarisation; microstrip antennas; resonance; EMC antenna; EMC applications; EMC measurements; EMI; conformal antennas; dominant mode resonance; hemispherical-circular microstrip antenna; high polarisation purity; planar circular patch antennas; radiated emission tests; radiated susceptibility tests; resonant frequencies; sphere; Antenna theory; Dielectric losses; Educational institutions; Electromagnetic compatibility; Equations; Microstrip antennas; Patch antennas; Polarization; Resonance; Resonant frequency;
Conference_Titel :
Electromagnetic Interference and Compatibility '99. Proceedings of the International Conference on
Print_ISBN :
81-900652-0-3
DOI :
10.1109/ICEMIC.1999.871677
