Title :
Analysis of whip antenna fed by a slot antenna with electromagnetic coupling
Author :
Fukasawa, T. ; Endo, T. ; Makino, S. ; Urasaki, S.
Author_Institution :
Mitsubishi Electr. Corp., Kamakura, Japan
Abstract :
In this paper, a new type of antenna without the contact feed point is proposed for mobile information terminals. The whip antenna is excited by the built-in antenna with electromagnetic coupling. The built-in antenna acts as a radiator when the whip antenna is pulled in. The built-in antenna acts as not only a radiator but also an exciter for the whip antenna when the whip antenna is extended. In this antenna, the shortcoming of the conventional antenna with contact feed point disappears. The slot antenna on a small conductor plate and a dipole antenna are proposed for the built-in antenna and the whip antenna, respectively. The slot antenna is easily manufactured by an etching technology with low cost. Further, it can be made of very thin conductor film on the substrate, so it is very light.
Keywords :
antenna feeds; antenna radiation patterns; dipole antennas; mobile antennas; slot antennas; built-in antenna; dipole antenna; electromagnetic coupling; etching technology; exciter; mobile information terminals; radiator; slot antenna feed; small conductor plate; very thin conductor film; whip antenna; Antenna feeds; Conductive films; Conductors; Dipole antennas; Electromagnetic analysis; Electromagnetic coupling; Electromagnetic radiation; Manufacturing; Mobile antennas; Slot antennas;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1996. AP-S. Digest
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
0-7803-3216-4
DOI :
10.1109/APS.1996.549899
