Title :
Miniaturized and reconfigurable CPW square-ring slot antenna using thin film varactor technology
Author :
Jiang, Hai ; Patterson, Mark ; Brown, Dustin ; Zhang, Chenhao ; Pan, KenChuang ; Subramanyam, Guru ; Kuhl, David ; Leedy, Kevin ; Cerny, Charles
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Dayton, Dayton, OH, USA
Abstract :
Ferroelectric (FE) Barium Strontium Titanate (Ba(1-x)SrxTiO3, BST) thin film varactor technology is applied to the antenna miniaturization and reconfiguration successfully. CPW square-ring slot antenna is used as a design example, and antennas with and without integrated BST varactors were fabricated and characterized. Including the total ground, the size of miniaturized antenna is 0.12λ0 × 0.12λ0 which is reduced by 31% compared with antenna without the BST varactors. Moreover, the frequency of the miniaturized antenna with the BST varactors is reconfigurable from 5.8 GHz to 6.1 GHz with a low DC biasing voltage of 3 V. Both E-plane and H-plane patterns were measured for the antennas. Fabrication details and measurement setup are also presented.
Keywords :
barium compounds; coplanar waveguides; ferroelectric thin films; microwave antennas; slot antennas; strontium compounds; varactors; waveguide antennas; DC biasing voltage; E-plane pattern; H-plane pattern; ferroelectric barium strontium titanate thin film varactor technology; frequency 5.8 GHz to 6.1 GHz; integrated BST varactor; measurement setup; reconfigurable CPW square ring slot antenna miniaturization; voltage 3 V; Antenna measurements; Coplanar waveguides; Loaded antennas; Slot antennas; Varactors; Ferroelectric; antenna miniaturization; coplanar waveguide (CPW); high permittivity material; reconfigurable antenna; ring slot antenna; thin film; varactor loading;
Conference_Titel :
Microwave Symposium Digest (MTT), 2011 IEEE MTT-S International
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-61284-754-2
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2011.5972906
