Communications: radio wave antennas – Antennas – High frequency type loops
Reexamination Certificate
2007-06-05
2007-06-05
Chen, Shih-Chao (Department: 2821)
Communications: radio wave antennas
Antennas
High frequency type loops
C343S855000, C343S867000
Reexamination Certificate
active
10929449
ABSTRACT:
A gate antenna device has a plurality of loop antennas which supplies power and transmission data to an IC-integrated medium through electromagnetic induction and acquires reception data in the form of a fluctuation of a load from the IC-integrated medium. The plurality of loop antennas include a power-fed loop antenna to which a signal current is supplied and a non-power-fed loop antenna to which no signal current is supplied. The gate antenna device expands the distance and range of communication with an IC-integrated medium and improves the accuracy of communication while suppressing power consumption and leakage electric fields.
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Deguchi Futoshi
Haruyama Hiroaki
Tanaka Masahiko
Yoshinaga Hiroshi
Chen Shih-Chao
Matsushita Electric - Industrial Co., Ltd.
Stevens Davis Miller & Mosher LLP
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