A reconfigurable miniaturized planar inverted-F antenna with integrated BaSrTiO3 capacitor

作者：Haskou Abdullah; Sharaiha Ala; Collardey Sylvain; Borderon Caroline; Ginestar Stephane; Renoud Raphael; Gundel Hartmut W

来源：Microwave and Optical Technology Letters, 2018, 60(6): 1511-1515.

DOI：10.1002/mop.31192

• BST tunable capacitor
• frequency reconfigurable antenna
• wide tuning range

In this letter, a wide-tuning range planar inverted-F antenna (PIFA) of 17x10mm(2) dimension printed on a Rogers duroid RT5880 substrate is presented. The printed circuit board (PCB) dimensions are 1x60mm(2). First, the antenna is simulated with a localized capacitor and the effect of the capacitor losses on the antenna efficiency is studied. Then, the antenna is simulated with an integrated BaSrTiO3 (BST) tunable capacitor. The obtained results are in very good agreement with those obtained with localized elements. Finally, the BST thin film capacitor is fabricated and mounted on the antenna. The experimental results show a capacitor tunability of 56.7% at a bias voltage of 35V, leading to an antenna agility of 42.2%.

• 出版日期2018-6