A frequency-reconfigurable slot loop antenna using ferroelectric MIM capacitors

IEICE Electronics Express

Hsiao-Yun Li¹  Jia-Shiang Fu¹  Wei-Cheng Ran¹  Hai-Ping Chen¹  Shiu-Cheng Chen¹ 

[1] Department of Electrical Engineering, National Central University

关键词: ferroelectric capacitors;    slot loop antennas;    reconfigurable antennas;   

DOI  :  10.1587/elex.10.20130521

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(11)Cited-By(1)A frequency-reconfigurable antenna based on periodically loading ferroelectric MIM capacitors along a slot loop is designed, fabricated, and measured. The antenna is fabricated on a 430-µm-thick sapphire substrate with a total area of 1×1cm2. The size of the slot loop is 2.5×2.5mm2. By changing the bias voltage of the ferroelectric varactors from 0V to 7V, the resonant frequency of the varactor-loaded antenna can be tuned from 5.57GHz to 7.33GHz, corresponding to a tuning range of 27.3%, while keeping the return loss greater than 10dB. At 5.57GHz, the size of the slot loop is 0.046×0.046λ02. When biased at 7V, the antenna gain is −10.8 dBi at 7.35GHz. Under 0-V bias, the Pin,1dB of the tunable antenna is 18.8dBm at 5.6GHz.

【 授权许可】

Unknown