A Frequency Agile Miniaturized Antenna Utilizing Ferroelectric Barium-Strontium-Titanate Capacitors. Issue 1691 (14th October 2014)

• Record Type: Journal Article
• Authors: Alzahrani, S.; Kalkur, T.S; Song, H.
• Editors: Vogel, E.M.
• Is Part Of: MRS proceedings. Issue 1691:(2014)
• Publication Date: 2014-10-14
• Subjects: ferroelectric, -- microelectronics, -- thin film; Electrical engineering -- Congresses; Physics -- Congresses; Materials -- Research -- Congresses; Materials science -- Congresses; 620.11
• DOI: 10.1557/opl.2014.904
• Languages: English
• ISSNs: 0272-9172

Abstract

Abstract: A miniaturized frequency agile multi-band antenna based on BST varactors is presented. The radiation patterns and frequency responses of this antenna are characterized. The measured tunability was 2.1%, 9.1%, and 6.6% for the first, second, and third band respectively. The lowest resonant frequency corresponds to an antenna size of 0.076 λg × 0.076 λg . The size reduction of the antenna was achieved by employing the novel antenna structure and the thin film BST varactors. The measured -3 dB bandwidth was between 3.1% and 7.4% for all bands.