Title :
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
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;
Conference_Titel :
Antennas and Propagation (EuCAP), 2014 8th European Conference on
Conference_Location :
The Hague
DOI :
10.1109/EuCAP.2014.6901830
