Title :
Measurement of HF monopole antenna array ground wave gain, antenna factor, and antenna noise factor
Author :
Arafiles, Virgilio P.
Author_Institution :
Dept. of Defense, Ellicott City, MD, USA
Abstract :
This paper presents a practical way to measure the ground wave gain GGW, ground wave antenna factor AFGW, and antenna noise factor Fa(Mon) of monopoles used in BF antenna arrays. It shows measurement results taken from June 1997 to September 1999 at five geographically separated HIT arrays. Fa(Mon) is derived from site specific noise electric field En and can be compared with "standard" Fa(*). While antenna noise factor is antenna dependent, En is not and can be used as a limit for site EMC with noise emitters
Keywords :
HF antennas; antenna testing; electric noise measurement; electromagnetic compatibility; gain measurement; monopole antenna arrays; HF monopole antenna array; antenna noise factor measurement; geographically separated HIT arrays; ground wave antenna factor measurement; ground wave gain measurement; site EMC; site specific noise electric field; Antenna arrays; Antenna measurements; Frequency; Gain measurement; Hafnium; Noise measurement; Receiving antennas; Testing; Transmitting antennas; Working environment noise;
Conference_Titel :
Electromagnetic Compatibility, 2001. EMC. 2001 IEEE International Symposium on
Conference_Location :
Montreal, Que.
Print_ISBN :
0-7803-6569-0
DOI :
10.1109/ISEMC.2001.950530
