Tunable Dual-band IFA Antenna using LC Resonators
Nan Ni
TL;DR
This paper introduces a tunable dual-band inverted F antenna using LC resonators with a BST capacitor, enabling coverage of multiple communication bands through external voltage tuning.
Contribution
The novel design incorporates a tunable BST capacitor in the LC resonator to achieve adjustable dual-band operation in an IFA antenna.
Findings
Capable of covering six communication systems.
BST capacitor tuning ratio of 3.3:1.
Effective dual-band tuning via external DC bias.
Abstract
A tunable dual-band inverted F antenna (IFA) is presented in this paper. By placing a LC resonator on the radiating arm, dual-band characteristic is achieved. Especially, the capacitor in the resonator is a tunable thin-film BST capacitor, which has a 3.3:1 tuning ratio. The capacitance of the BST capacitors can be tuned by an external DC bias voltage. By varying the capacitance, both the lower band and the upper band of the IFA antenna can be tuned. And the total bandwidth can cover six systems, i.e., GSM-850, GSM-900, GPS, DCS, PCS, and UMTS.
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Taxonomy
TopicsAntenna Design and Analysis · Microwave Engineering and Waveguides · Advanced Antenna and Metasurface Technologies