Title :
Low-Profile Directive Millimeter-Wave Antennas Using Free-Formed Three-Dimensional (3-D) Electromagnetic Bandgap Structures
Author :
Lee, Yoonjae ; Lu, Xuesong ; Hao, Yang ; Yang, Shoufeng ; Evans, Julian R G ; Parini, Clive G.
Author_Institution :
Antenna & Electromagn. Group, Univ. of London, London, UK
Abstract :
We present design methodologies for directive millimeter-wave antennas using free-formed three-dimensional (3-D) electromagnetic bandgap (EBG) structures. Dispersion characteristics of 3-D EBGs have been computed by finite-difference time-domain (FDTD) simulations and the designed EBGs have been fabricated by using the extrusion free-forming technique. The fabricated EBG structures have been measured and integrated with a waveguide feed to form a Fabry-Perot cavity antenna. The prototype antenna demonstrated 10deg to 14deg beamwidths with measured gain of 13 dBi. The woodpile EBG antenna achieved a narrow beamwidth without resorting to complex arrays or bulky reflectors, which would make the antenna well-suited for millimeter-wave broadband mobile communications, imaging and space applications.
Keywords :
directive antennas; finite difference time-domain analysis; millimetre wave antennas; mobile antennas; photonic band gap; 3D electromagnetic bandgap structures; Fabry-Perot cavity antenna; extrusion free-forming technique; finite-difference time-domain simulation; free-formed three-dimensional electromagnetic bandgap structures; low-profile directive millimeter wave antennas; millimeter wave broadband mobile communication; narrow beamwidth; waveguide; woodpile EBG antenna; Antenna measurements; Broadband antennas; Directive antennas; Finite difference methods; Metamaterials; Millimeter wave measurements; Millimeter wave technology; Mobile antennas; Periodic structures; Time domain analysis; Directive antenna; electromagnetic bandgap (EBG); metamaterial; millimeter-wave;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2009.2029299
