Title :
Analysis of omnidirectional antennas with radome operating in LMDS band for signals of digital TV
Author :
Resende, Úrsula C. ; Moreira, Fernando J S ; Bergmann, José R.
Author_Institution :
Dept. Electr. Eng., CEFET-MG, Belo Horizonte, Brazil
Abstract :
This work considers the use of dual-reflector antennas for omnidirectional coverage in a LMDS system base station to operate with the distribution of digital TV signals. We investigate the performance of omnidirectional antenna with and without dielectric radome. Numerical simulations based the method of moments are presented to illustrate the usefulness of the omnidirectional antennas to operate in LMDS systems. The analyses are conducted for a 20% bandwidth. It is used a radome with thickness equal to ¿/2 and relative permittivity equal to 2.08. The analyses intend to demonstrate the radome influence in the antenna behavior across the operation band and to identify the best radome thickness.
Keywords :
digital television; directive antennas; numerical analysis; permittivity; radomes; reflector antennas; television antennas; LMDS band; digital TV signals; dual-reflector antennas; numerical simulations; omnidirectional antennas analysis; radome; relative permittivity; Digital TV; Signal analysis; LMDS, digital TV; Method of moments; omnidirectional reflector antennas; radomes;
Conference_Titel :
Microwave and Optoelectronics Conference (IMOC), 2009 SBMO/IEEE MTT-S International
Conference_Location :
Belem
Print_ISBN :
978-1-4244-5356-6
Electronic_ISBN :
1679-4389
DOI :
10.1109/IMOC.2009.5427625
