tk5561a ATMEL Corporation, tk5561a Datasheet - Page 6

• Manufacturer Part Number: tk5561a
• Description: Read/write Crypto Transponder For Short Cycle Time
• Manufacturer: ATMEL Corporation

7. Measurement Assembly
6
TK5561A-PP
All parameters are measured in a Helmholtz-arrangement, which generates a homogenous
magnetic field (see
coils, so the magnetic field can be varied in frequency and field strength.
Figure 7-1.
Figure 7-2.
REFERENCE COIL
( IN PHASE )
REFERENCE COIL
22 mm
Testing Application
Testing Geometry
FIELD GENERATING COIL
Figure 7-1
SENSING COILS (IN PHASE)
FIELD GENERATING
5 mm
COILS (IN PHASE )
SENSING COIL
TK5561A-PP
GENERATOR
and
FUNCTION
Figure
Transponder
l = 30 mm
7-2). A function generator drives the field generating
SENSING COIL
REFERENCE COIL (IN PHASE)
FIELD GENERATING COIL
SUBTRACTOR
REFERENCE COIL
AMPLIFIER
1:10
d = 60 mm
4682D–RFID–09/06
OUTPUT
VOLTAGE