Title :
Radiation efficiency improvement of low profile antenna with metamaterial structure using LCP substrate with low profile copper foil
Author :
Inoue, Kazuhiro ; Higaki, Makoto ; Yamada, Akiko ; Obayashi, Shuichi ; Shoki, Hiroki ; Morooka, Tasuku
Author_Institution :
Corp. R&D Center, Toshiba Corp., Japan
Abstract :
EBG (Electromagnetic BandGap) structures have lately attracted considerable attention both for the surface wave suppression and low profile antennas. To achieve low profile antennas by using an EBG structure for the antenna substrate, the thinner EBG substrate as well as the smaller gap to the antenna above the EBG substrate is important. Furthermore, a smaller EBG substrate area is required to accommodate the antenna into small wireless equipments. We have proposed a small metamaterial structure by analogy with a mushroom-like EBG structure, which enables a dipole antenna just above the structure to match with 50Ω as well as EBG structures.
Keywords :
antenna radiation patterns; dipole antennas; liquid crystal polymers; metamaterials; photonic band gap; LCP substrate; antenna substrate; dipole antenna; electromagnetic bandgap structures; liquid crystal polymers; low profile antenna; low profile copper foil; metamaterial structure; radiation efficiency; small wireless equipments; surface wave suppression; Antennas; Conductivity; Copper; Metamaterials; Periodic structures; Substrates; Surface roughness;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2010 IEEE
Conference_Location :
Toronto, ON
Print_ISBN :
978-1-4244-4967-5
DOI :
10.1109/APS.2010.5561193
