Capacitive Coupling Element Antennas for Multi-Standard Mobile Handsets

Antenna prototypes based on a simple capacitive coupling element (CCE) on a compact smartphone chassis are presented. This versatile antenna structure is easily modifiable with circuit design. We show with experimental data how the same CCE is implemented first with single-feed and then with dual-fe...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2013-05, Vol.61 (5), p.2783-2791
Main Authors: Valkonen, R., Kaltiokallio, M., Icheln, C.
Format: Article
Language:English
Subjects:
Antennas
Applied sciences
Bandwidth
Couplings
Diplexers
Exact sciences and technology
Impedance
impedance matching
mobile antennas
Radio frequency
Radiocommunication specific techniques
Radiocommunications
Receivers
Resonant frequency
Services and terminals of telecommunications
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Telephone. Videophone
Transmitters. Receivers
tunable circuits and devices
tuning
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Summary:Antenna prototypes based on a simple capacitive coupling element (CCE) on a compact smartphone chassis are presented. This versatile antenna structure is easily modifiable with circuit design. We show with experimental data how the same CCE is implemented first with single-feed and then with dual-feed interface towards the transceiver front-end. These two antennas operate at the LTE-A frequencies 698-960 MHz and 1710-2690 MHz with good efficiency, owing to a novel dual-branch impedance matching circuit which utilizes the properties of the CCE and the chassis in a proficient way. A third antenna based on the same CCE is designed for a software defined radio receiver. This tunable antenna operates at 750-2500 MHz with acceptable efficiency.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2013.2244838