Title :
Lumped-Element Loaded EBG Structure with an Enhanced Bandgap and Homogeneity
Author :
Yanagi, Takashi ; Oshima, Takeshi ; Oh-hashi, Hideyuki ; Konishi, Yoshihiko ; Murakami, Satoshi ; Itoh, Kenji ; Sanada, Atsushi
Author_Institution :
Mitsubishi Electr. Corp., Kamakura
Abstract :
In this paper, a wideband EBG structure with an enhanced bandgap and homogeneity by loading lumped-elements is presented. Lumped-element capacitors are loaded between the adjacent patch conductors, and also lumped-element inductors are loaded in series with vertical vias in the proposed EBG, leading to a drastic reduction of the unit cell size, and consequently, an enhanced homogeneity. In addition, it relaxes a limitation of the frequency versus physical dimensions. A systematic design procedure for broadband EBG structures is provided based on the equivalent circuit model of 2-D CRLH transmission line. In Addition, the validity of the design is confirmed experimentally.
Keywords :
capacitors; equivalent circuits; lumped parameter networks; photonic band gap; transmission lines; CRLH transmission line; adjacent patch conductors; electromagnetic bandgap; equivalent circuit model; lumped-element capacitors; lumped-element loaded EBG structure; systematic design procedure; wideband EBG structure; Capacitors; Conductors; Distributed parameter circuits; Equivalent circuits; Frequency; Inductors; Metamaterials; Periodic structures; Photonic band gap; Wideband;
Conference_Titel :
Antenna Technology: Small Antennas and Novel Metamaterials, 2008. iWAT 2008. International Workshop on
Conference_Location :
Chiba
Print_ISBN :
978-1-4244-1522-9
DOI :
10.1109/IWAT.2008.4511377
