Title :
Novel small structure for low profile antenna by analogy with EBG structure
Author :
Higaki, Makoto ; Yamada, Akiko ; Inoue, Kazuhiro ; Obayashi, Shuichi ; Sekine, S. ; Shoki, Hiroki ; Morooka, Tasuku
Author_Institution :
Toshiba R&D Center, Toshiba Corp., Tokyo
Abstract :
By using the image theorem, the relation between the reflection phase of an infinite plane and the input impedance of the dipole antenna just above the plane has been discussed. It has been confirmed that the dipole antenna matches with 50 Omega when the reflection phase is around pi/2, and it is similar to the dipole antenna above an EBG structure. We have proposed the novel small structure which enables the dipole antenna to lay in low profile to the ground plane. The proposed structure rotates the reflection phase through a frequency band and the dipole antenna just above the structure matches with 50 Omega when the reflection phase is around pi/2. It is concluded that the periodicity of an EBG structure is NOT indispensable to realize a low profile antenna.
Keywords :
dipole antennas; photonic band gap; EBG structure; dipole antenna; image theorem; infinite plane; input impedance; low profile antenna; reflection phase; Dipole antennas; Frequency; Impedance; Metamaterials; Periodic structures; Photonic band gap; RLC circuits; Reflection; Reflector antennas; Surface waves;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2008. AP-S 2008. IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-2041-4
Electronic_ISBN :
978-1-4244-2042-1
DOI :
10.1109/APS.2008.4619316
