Frequency tunable microstrip patch antenna using ferroelectric thin film varactor

Author

Jiang, Hai ; Patterson, Mark ; Zhang, Chenhao ; Subramanyam, Guru

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Dayton, Dayton, OH, USA

fYear

2009

Firstpage

248

Lastpage

250

Abstract

A novel frequency tunable microstrip patch antenna using ferroelectric BST thin film varactor is presented. The resonant frequency of this reconfigurable antenna is controlled by tuning the capacitance of the RF varactor which is used as part of the antenna feedline in this design. Since the varactor uses the coplanar waveguide (CPW) transmission line, tapered microstrip line between the antenna and the varactor are employed to ensure proper transitions. Experimental results demonstrate that a high tuning range can be achieved for the reconfigured microstrip patch antenna with a lower variation of the DC biasing voltage applied on the ferroelectric varactor.

Keywords

coplanar transmission lines; coplanar waveguides; ferroelectric thin films; microstrip antennas; microstrip lines; varactors; DC biasing voltage; coplanar waveguide transmission line; ferroelectric thin film varactor; microstrip patch antenna; resonant frequency; tapered microstrip line; tunable frequency; Antenna feeds; Binary search trees; Coplanar waveguides; Ferroelectric materials; Microstrip antennas; Patch antennas; Resonant frequency; Transistors; Tuning; Varactors;

fLanguage

English

Publisher

ieee

Conference_Titel

Aerospace & Electronics Conference (NAECON), Proceedings of the IEEE 2009 National

Conference_Location

Dayton, OH

Print_ISBN

978-1-4244-4494-6

Electronic_ISBN

978-1-4244-4495-3

Type

conf

DOI

10.1109/NAECON.2009.5426620

Filename

5426620