Electricity: measuring and testing – Impedance – admittance or other quantities representative of...
Reexamination Certificate
2007-01-09
2007-01-09
Nguyen, Vincent Q. (Department: 2858)
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
C324S627000
Reexamination Certificate
active
11296056
ABSTRACT:
Provided is an apparatus for measuring a read range between a tag and a reader, which includes an electromagnetic anechoic chamber formed by connecting at least one unit cell in a row, the unit cell having an electromagnetic wave absorbent provided on an inner wall of each unit cell, an electromagnetic generation portion located at the unit cell at an end of the electromagnetic anechoic chamber and transmitting an electromagnetic wave through an antenna, and an electromagnetic measurement portion which measures a field strength of the electromagnetic wave transmitted from the electromagnetic generation portion using an electric field probe moving in the electromagnetic anechoic chamber.
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Chae Jong Suk
Kim Nae Soo
Lee Jong Moon
Pyo Cheol Sig
Electronics and Telecommunications Research Institute
Ladas & Parry LLP
Nguyen Vincent Q.
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