Title :
Wideband Rod-dipole antenna with a modified feed for DTV signal reception
Author :
Su, Saou-Wen ; Chang, Fa-Shian
Author_Institution :
Network Access S.B.U., Lite-On Technol. Corp., Taipei, Taiwan
Abstract :
The impedance matching for frequencies across the 470-862 MHz band is all within VSWR of 3 (better than 6 dB), which covers both DVB-H band and channels 14-69 for DTV reception. The studies on the corresponding centre-fed dipole antenna with a feed gap of 3 mm were also conducted. The results (not shown for brevity) indicate that the achievable bandwidth is only about one-fifth bandwidth of the proposed antenna, which is far from covering the desired bandwidth. The radiation characteristics were obtained using ETSLindgren OTA test system in the CTIA authorized test laboratory. It can be seen that similar omnidirectional radiation patterns to those of the conventional centre-feed dipoles are obtained. Other frequencies in the bands of interest were also measured, and no appreciable difference in patterns was found. The measured peak antenna gain is in the range of 1.0-3.2 dBi and radiation efficiency exceeds about 70%.
Keywords :
antenna feeds; antenna radiation patterns; broadband antennas; digital television; dipole antennas; impedance matching; CTIA; DTV signal reception; DVB-H; ETSLindgren OTA test system; centre-feed dipoles; frequency 470 MHz to 862 MHz; impedance matching; omnidirectional radiation patterns; wideband rod-dipole antenna; Antenna feeds; Antenna measurements; Bandwidth; Broadband antennas; Digital TV; Dipole antennas;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2010 IEEE
Conference_Location :
Toronto, ON
Print_ISBN :
978-1-4244-4967-5
DOI :
10.1109/APS.2010.5561190