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A reconfigurable miniaturized planar inverted‐F antenna with integrated BaSrTiO 3 capacitor
Author(s) -
Haskou Abdullah,
Sharaiha Ala,
Collardey Sylvain,
Borderon Caroline,
Ginestar Stéphane,
Renoud Raphaël,
Gundel Hartmut W.
Publication year - 2018
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.31192
Subject(s) - capacitor , materials science , antenna (radio) , optoelectronics , planar , loop antenna , electrical engineering , antenna factor , antenna measurement , voltage , engineering , computer science , computer graphics (images)
In this letter, a wide‐tuning range planar inverted‐F antenna (PIFA) of 17 × 10 mm 2 dimension printed on a Rogers duroid RT5880 substrate is presented. The printed circuit board (PCB) dimensions are 1 × 60 mm 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 BaSrTiO 3 (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 35 V, leading to an antenna agility of 42.2%.