Study of a Method for Increasing Isolation Between Closely Spaced Elements integrated in Multi-Standard Multi-Antenna Systems
Résumé
This paper presents the study of a method used for decoupling radiating elements in the case of a multiband structure dedicated to small LTE Smart Cells. This method consists in using a power splitter and a phase shifter connected between the feeds of the two groups of radiating elements. The study begins with a monoband structure made up of printed monopoles and a wired standing one. The impact on the validity of the method, due to the introduction of two additional bands through the addition of parasitic elements was then studied. A prototype was realized and tested and he measurements are discussed in this paper.
Mots clés
antenna feeds
decoupling radiating elements
LTE smart cells
Long Term Evolution
monopole antenna arrays
multifrequency antennas
phase shifters
multistandard multiantenna systems
power splitter
monoband structure
printed monopoles
parasitic elements
antenna radiation patterns
antenna isolation.
mutual coupling
MIMO
multiband structure
monopole antenna