A Free-formed EBG resonator antenna at millimeter wave frequencies

Author

Lee, Yoonjae ; Zhao, Yan ; Hao, Yang ; Parini, Clive G.

Author_Institution

Dept. of Electron. Eng., Univ. of London, London

fYear

2006

fDate

6-10 Nov. 2006

Firstpage

1

Lastpage

4

Abstract

Electromagnetic bandgap structures (EBG) finds increasing number of applications in antennas and microwave devices. In this paper, we present an EBG resonator antenna based on woodpile structure at millimeter frequency. The dispersion characteristics of the woodpile structures have been analyzed using 3D FDTD codes with a periodic boundary condition (PBC). An annular slot antenna is used as the radiating element at 93 GHz. For the construction of the woodpile structure, we use alumina rods (epsiv_r = 9.6) with 0.4 mm diameter. A new method is employed for the fabrication of the woodpile using extrusion freeforming technique. The freeforming technique is very useful to construct complicated 3D structures. The designed EBG antenna shows improved directivities. At 93 GHz, directivity of 18 dBi has been achieved, which is approximately 11 dB improvement for the original antenna.

Keywords

antennas; finite difference time-domain analysis; photonic band gap; resonators; 3D FDTD codes; annular slot antenna; dispersion characteristics; electromagnetic bandgap structures resonator antenna; extrusion freeforming; microwave devices; millimeter wave frequencies; periodic boundary condition; woodpile structure; Boundary conditions; Finite difference methods; Frequency; Metamaterials; Microwave antennas; Microwave devices; Millimeter wave devices; Millimeter wave technology; Periodic structures; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation, 2006. EuCAP 2006. First European Conference on

Conference_Location

Nice

Print_ISBN

978-92-9092-937-6

Type

conf

DOI

10.1109/EUCAP.2006.4584980

Filename

4584980