Capacitive Coupling Element Antennas for Multi-Standard Mobile Handsets

Author

Valkonen, Risto ; Kaltiokallio, M. ; Icheln, C.

Author_Institution

Dept. of Radio Sci. & Eng., Aalto Univ., Aalto, Finland

Volume

61

Issue

5

fYear

2013

fDate

5/1/2013 12:00:00 AM

Firstpage

2783

Lastpage

2791

Abstract

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.

Keywords

Long Term Evolution; UHF antennas; antenna feeds; impedance matching; radio transceivers; smart phones; software radio; telecommunication standards; CCE; LTE-A frequency; capacitive coupling element antenna; circuit design; compact smartphone chassis; dual-branch impedance matching circuit; dual-feed interface; frequency 1710 MHz to 2690 MHz; frequency 698 MHz to 960 MHz; frequency 750 MHz to 2500 MHz; multistandard mobile handset; single-feed interface; software defined radio receiver; transceiver front-end; Antennas; Bandwidth; Couplings; Impedance; Radio frequency; Receivers; Resonant frequency; Diplexers; impedance matching; mobile antennas; tunable circuits and devices; tuning;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2013.2244838

Filename

6428610