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Patent Searching and Data


Title:
MULTI-ANTENNA CIRCUIT AND MULTI-ANTENNA RADIO FREQUENCY IDENTIFICATION READER
Document Type and Number:
WIPO Patent Application WO/2019/088624
Kind Code:
A1
Abstract:
A multi-antenna circuit of the present invention comprises: a matching circuit unit which is connected between a high frequency signal terminal and multiple antennas so as to match high frequency signals; and a selection circuit unit which is connected between the matching circuit unit and the multiple antennas so as to sequentially connect one antenna selected among the multiple antennas to the matching circuit unit, in response to an antenna selection signal. Therefore, the selection circuit unit forms a closed circuit between the selected antenna and the matching circuit unit and keeps the other non-selected antennas isolated from the matching circuit unit, so that inductive interference occurring between closely arranged antennas can be prevented.

Inventors:
SON, Young Jeon (506-203, 165 Ingye-ro, Yeongtong-gu,Suwon-si, Gyeonggi-do, 16535, KR)
Application Number:
KR2018/012918
Publication Date:
May 09, 2019
Filing Date:
October 29, 2018
Export Citation:
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Assignee:
SON, Young Jeon (506-203, 165 Ingye-ro, Yeongtong-gu,Suwon-si, Gyeonggi-do, 16535, KR)
International Classes:
H01Q23/00; B65G1/137; H01Q1/22; H01Q7/00
Foreign References:
JP2001298378A2001-10-26
JP2008301037A2008-12-11
JP4639857B22011-02-23
KR101511458B12015-04-10
KR101281950B12013-07-03
Attorney, Agent or Firm:
E-SANG PATENT & TRADEMARK LAW FIRM (3F. 188, Baumoe-roSeocho-gu, Seoul, 06747, KR)
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