Title :
Inductive and capacitive excitation of the characteristic modes of small terminals
Author :
Martens, Robert ; Safin, Eugen ; Manteuffel, Dirk
Author_Institution :
Inst. of Electr. & Inf. Eng., Christian - Albrechts - Univ. of Kiel, Kiel, Germany
Abstract :
In this paper we present concepts for the selective excitation of orthogonal modes of small terminals by inductive and capacitive coupling elements. The concepts can be used to implement an efficient MIMO (Multiple Input Multiple Output) antenna system based on the TCM (Theory of Characteristic Modes). Both coupling concepts are discussed with respect to their ability to excite specific modes separately. An important result obtained is that inductive couplers offer advantages over capacitive couplers in exciting the desired modes purely even when they are not close to their modal resonance.
Keywords :
MIMO communication; antenna accessories; antenna arrays; electric connectors; electromagnetic coupling; mobile radio; telecommunication terminals; MIMO antenna system; TCM; capacitive couplers; capacitive coupling element; capacitive excitation; inductive couplers; inductive coupling element; inductive excitation; modal resonance; multiple-input multiple-output antenna system; selective orthogonal mode excitation; theory of characteristic modes; Antenna radiation patterns; Couplers; Couplings; Current distribution; Ice;
Conference_Titel :
Antennas and Propagation Conference (LAPC), 2011 Loughborough
Conference_Location :
Loughborough
Print_ISBN :
978-1-4577-1014-8
Electronic_ISBN :
978-1-4577-1015-5
DOI :
10.1109/LAPC.2011.6114141
