Study of a flexible low profile tunable dipole antenna using barium strontium titanate varactors
- Resource Type
- Conference
- Authors
- Cure, David; Weller, Thomas; Miranda, Felix A.
- Source
- The 8th European Conference on Antennas and Propagation (EuCAP 2014) Antennas and Propagation (EuCAP), 2014 8th European Conference on. :31-35 Apr, 2014
- Subject
- Aerospace
Communication, Networking and Broadcast Technologies
Fields, Waves and Electromagnetics
Substrates
Frequency selective surfaces
Dipole antennas
Metals
Antenna measurements
Flexible antennas
varactor-tuned high impedance surfaces
chip capacitors
BST
Young's module
- Language
- ISSN
- 2164-3342
In this paper a flexible low profile dipole antenna using a frequency selective surface (FSS) with interdigital barium strontium titanate (BST) varactor-tuned unit cells is presented. The varactor chips were placed only along one dimension of the FSS to avoid the use of vias and simplify the DC bias network. The antenna uses overlapping metallic plates that resemble fish scales as a ground plane to improve the flexibility of the multi-material stack structure. The measured data of the antenna demonstrate tunability from 2.42 GHz to 2.66 GHz and 1.3 dB gain drop when using overlapping metallic plates instead of continuous ground plane. The total antenna thickness is approximately lambda/24.