A Highly Integrated Independently Tunable Triple-Band Patch Antenna

A highly integrated tunable triple-band patch antenna is designed and fabricated. Two U-slots are cut in the same radiating patch to achieve triple-band performance. While the antenna miniaturization is obtained by loading one patch edge with metalized vias, theory of characteristic modes is adopted...

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Bibliographic Details
Published in:IEEE antennas and wireless propagation letters Vol. 16; pp. 2216 - 2219
Main Authors: Boukarkar, Abdelheq, Xian Qi Lin, Jia Wei Yu, Peng Mei, Yuan Jiang, Yi Qiang Yu
Format: Journal Article
Language:English
Published: New York IEEE 2017
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Antenna measurements
Antennas
Diodes
Frequency measurement
Frequency-tunable antenna
Miniaturization
patch antenna
Patch antennas
Resonant frequencies
Resonant frequency
single-feed antenna
Size reduction
triple-band antenna
Tuning
Varactor diodes
Varactors
ISSN:1536-1225, 1548-5757
Online Access:Get full text
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Summary:A highly integrated tunable triple-band patch antenna is designed and fabricated. Two U-slots are cut in the same radiating patch to achieve triple-band performance. While the antenna miniaturization is obtained by loading one patch edge with metalized vias, theory of characteristic modes is adopted to explain the U-slots scaling. The antenna radiating patch size is only 0.1λ 0 × 0.17λ 0 . The operating frequencies can be independently tuned after properly inserting three varactor diodes into the radiating structure. The radiation patterns have similar unidirectional shapes with high stability of the resonant frequencies during the entire tuning of each band. Good agreement between simulation and measurement results is obtained. The antenna covers the following bands: 2.07-2.6 GHz, 2.86-3.57 GHz, and 4.59-5.39 GHz. The measured peak gains and efficiencies are 2.72 dBi and 62.6%, 2.76 dBi and 63.3%, and 2.87 dBi and 66.8%, respectively. Size reduction, multiband function, and independent tuning of three operating bands using only one antenna layer and one RF feedline are combined together to realize a compact and practical antenna.
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ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2017.2707095