Radio antenna device
作者： Toshimitsu Matsuyoshi , Kenji Monma , Yoshio Koyanagi , Koichi Ogawa
DOI:
关键词: Electrical engineering 、 Whip antenna 、 Omnidirectional antenna 、 Antenna gain 、 Engineering 、 Loop antenna 、 Passive radiator 、 Antenna aperture 、 Antenna (radio) 、 Periscope antenna 、 Acoustics
摘要: The radiation efficiency of a radio antenna device is improved by changing the directivity into direction where obstacles are avoided. A whip (102) connected through feeder (105) with transmitting/receiving section (106) in case (101). passive element (103) grounded to (101) load impedance (104). has its horizontal that varies depending on electromagnetic coupling (103). operates as director or reflector value increases when functions director, whereas opposite reflector.
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