Investigation of tunable matching circuits for multiband 4G handsets

Author

Cihangir, Aykut ; Ferrero, Fabien ; Luxey, Cyril ; Jacquemod, Gilles ; Reinhardt, Andreas ; Dussopt, Laurent ; Lorphelin, Nicolas ; Obeid, N. ; Brachat, Patrice

Author_Institution

LEAT-CREMANT, Univ. Nice Sophia-Antipolis, Valbonne, France

fYear

2014

fDate

6-11 April 2014

Firstpage

601

Lastpage

604

Abstract

Two antenna designs with tunable matching circuits suitable for 4G mobile terminals are presented. SPDT MEMS switches and tunable capacitors as active components are evaluated in those two different antenna topologies, in scope of the Artemos European project. The target bands include the 4G communication bands, i.e. 700-960MHz as the low-band (LB) and 1.7-2.7GHz as the high-band (HB). In the first design, the antenna operates in the target bands using two SPDT MEMS switches and a two-branched matching network. The second design is a dual-feed structure, where the LB reflection coefficient is tuned using a BST capacitor while the coverage in HB is permanent.

Keywords

4G mobile communication; Long Term Evolution; UHF antennas; UHF circuits; antenna feeds; capacitors; cellular radio; circuit tuning; microswitches; 4G communication bands; 4G mobile terminals; Artemos European project; BST capacitor; LB reflection coefficient; LTE-Advanced; SPDT MEMS switches; antenna designs; antenna topologies; dual-feed structure; frequency 1.7 GHz to 2.7 GHz; frequency 700 MHz to 960 MHz; mobile cellular communication; multiband 4G handsets; tunable capacitors; tunable matching circuits; two-branched matching network; Antenna measurements; Capacitors; Microswitches; Reflection coefficient; Reflector antennas; 4G; BST capacitor; LTE; MEMS switch; antenna; tunable element;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation (EuCAP), 2014 8th European Conference on

Conference_Location

The Hague

Type

conf

DOI

10.1109/EuCAP.2014.6901830

Filename

6901830