Non-uniform bias enhancement of a varactor-tuned FSS used with a low profile 2.4 GHz dipole antenna
- Resource Type
- Conference
- Authors
- Cure, David; Weller, Thomas M.; Miranda, Felix A.
- Source
- Proceedings of the 2012 IEEE International Symposium on Antennas and Propagation Antennas and Propagation Society International Symposium (APSURSI), 2012 IEEE. :1-2 Jul, 2012
- Subject
- Fields, Waves and Electromagnetics
Signal Processing and Analysis
Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Computing and Processing
Dipole antennas
Frequency selective surfaces
Broadband antennas
Antenna measurements
Antenna radiation patterns
Voltage measurement
- Language
- ISSN
- 1522-3965
1947-1491
In this paper a low profile antenna using a nonuniformly biased varactor-tuned frequency selective surface (FSS) is presented. The tunable FSS avoids the use of vias and has a simplified DC bias network. The voltages to the DC bias ports can be varied independently allowing adjustment in the frequency response and enhanced radiation properties. The measured data demonstrate tunability from 2.15 GHz to 2.63 GHz with peak efficiencies that range from 50% to 90% and instantaneous bandwidths of 50 MHz to 280 MHz within the tuning range. The total antenna thickness is approximately λ/45.