S-Band Continuously-Tunable Slot-Ring Antennas For Reconfigurable Antenna Array Applications

Keywords

Antenna arrays; Reconfigurable antennas; Slot antennas

Abstract

This paper presents a continuously-tunable single-polarized slot-ring antenna operating at S band. The frequency tunability is achieved by loading the slot-ring antenna with varactors. By properly designing the feeding network and biasing circuits, the slot-ring antenna is able to cover 2-4 GHz. A prototype antenna was fabricated and measured. The measured return loss is better than 9 dB from 2.66 to 4.09 GHz. The antenna gain and radiation pattern are very close to simulation results. This tunable slot-ring antenna can be extended for a reconfigurable antenna array to cover both L band and S band by strategically placing switches and varactors inside the slots of the antenna. This novel antenna array is able to change its frequency, polarization and radiation pattern.

Publication Date

3-16-2016

Publication Title

2016 International Workshop on Antenna Technology, iWAT 2016

Number of Pages

18-19

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/IWAT.2016.7434788

Socpus ID

84965160389 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84965160389

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