Title :
An optical feeding antenna with a wider bandwidth than conventional spherical dipole antennas
Author :
Itakura, Shigetaka ; Nabekura, Shuichi ; Okano, Yoshinobu ; Tokuda, Masamitsu
Author_Institution :
Res. Div. in Eng., Musashi Inst. of Technol., Tokyo, Japan
Abstract :
We constructed a wideband, optical feeding antenna that combines elements of a hemispherical antenna and a biconical antenna. Measurement of the radiated electrical field and comparison of the values with ones calculated using the finite difference time domain (FDTD) method showed that the calculated values for the frequency characteristics and the directivities of the radiated electric field agreed very well with the measured ones. The measured frequency characteristics of the radiated electric field were almost flat from 1 to 8 GHz. The measured electrical field levels were from 90 to 100 dBμV/m.
Keywords :
antenna feeds; conical antennas; finite difference time-domain analysis; 1 to 8 GHz; FDTD method; biconical antenna; conventional spherical dipole antennas; finite difference time domain method; hemispherical antenna; optical feeding antenna; radiated electrical field measurement; Antenna feeds; Antenna measurements; Bandwidth; Broadband antennas; Dipole antennas; Electric variables measurement; Finite difference methods; Frequency measurement; Time domain analysis; Time measurement;
Conference_Titel :
Electromagnetic Compatibility, 2005. EMC 2005. 2005 International Symposium on
Print_ISBN :
0-7803-9380-5
DOI :
10.1109/ISEMC.2005.1513483
