Title :
VLF transmitting antenna radiation efficiency: Measurement principle and data processing
Author :
Liang, YuJun ; Zheng, Longgen ; Zhang, Jing ; Zhao, Lin
Author_Institution :
Electron. Eng. Coll., Navy Univ. of Eng., WuHan, China
Abstract :
Measurement principle and data processing method are introduced for VLF transmitting antenna efficiency evaluation. According to wave propagation theory, antenna efficiency can be calculated by using field strength measured in the groundwave-dominant range. Selection of test equipment, method to calibrate the antenna factor and directional gain of a test antenna are also introduced. The calculated field strengths agree well with the measured data. As an example, the radiation efficiencies of a VLF antenna at different distance and frequencies are calculated.
Keywords :
antenna radiation patterns; antenna testing; electromagnetic wave propagation; transmitting antennas; VLF transmitting antenna efficiency evaluation; VLF transmitting antenna radiation; antenna directional gain; antenna factor; data processing; field strength measurement; groundwave-dominant range; measurement principle; test antenna; test equipment; very low frequency communication; wave propagation theory; Antenna measurements; Antenna theory; Antennas and propagation; Data processing; Electrical resistance measurement; Frequency; Instruments; Test equipment; Testing; Transmitting antennas; Wave-guide theory; radiation efficiency; transmitting antenna; very low frequency;
Conference_Titel :
Electronic Measurement & Instruments, 2009. ICEMI '09. 9th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-3863-1
Electronic_ISBN :
978-1-4244-3864-8
DOI :
10.1109/ICEMI.2009.5274047
