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1. (WO2018198082) ANTENNA SYSTEM FOR NFC READER

Pub. No.:    WO/2018/198082    International Application No.:    PCT/IB2018/052929
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Sat Apr 28 01:59:59 CEST 2018
IPC: H01Q 1/22
H01Q 7/00
H01Q 7/06
H01Q 21/29
G06K 19/077
H04B 5/00
Applicants: SMK-LOGOMOTION CORPORATION
LOGOMOTION, S.R.O.
Inventors: FLOREK, Miroslav
Title: ANTENNA SYSTEM FOR NFC READER
Abstract:
Two solenoid antennas (2, 3) with a ferrite core are placed mutually in parallel and outside the groundplan of the flat spiral antenna (1). Longitudinal axes (4) of the solenoid antennas (2, 3) are in parallel with the lateral sides of the flat spira antenna (1) and the distance between the longitudinal axes (4) of the solenoid antennas (2, 3) is 0,5 to 1,25 times the width of the flat spiral antenna (1) at most. The middle of the flat spira antenna (1) lies in a zone defined by the prolonged longitudinal axes (4) of the solenoid antennas (2, 3). The solenoid antennas (2, 3) are connected to the same output of the excitation element; preferably the solenoid antennas (2, 3) are identical. The flat spiral antenna (1) can be connected to the NFC chip (7) thorugh the low noise amplifier (6). The solenoid antennas (2, 3) can be on one side of the printed circuit board (5) and the flat spiral antenna (1) can be on the opposite side of the printed circuit board (5).