TK5530 Просмотр технического описания (PDF) - Atmel Corporation

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TK5530

Read-only Transponder

Atmel Corporation 

Measurement

Assembly

TK5530

All parameters are measured in a Helmholtz-arrangement, which generates a homoge-

nous magnetic field (see Figure 5 and Figure 6). A function generator drives the field

generating coils, so the magnetic field can be varied in frequency and field strength.

Figure 5. Testing Application

SENSING COILS ( IN PHASE )

TK5530

REFERENCE COIL

( IN PHASE )

SUBTRACTOR

AMPLIFIER

1:10

REFERENCE COIL ( IN PHASE )

OUTPUT

VOLTAGE

FIELD GENERATING

COILS ( IN PHASE )

FUNCTION

GENERATOR

Figure 6. Testing Geometry

l = 30 mm

22 mm

Transponder

d = 60 mm

REFERENCE COIL

SENSING COIL

5 mm

FIELD GENERATING COIL

SENSING COIL

REFERENCE COIL

FIELD GENERATING COIL

5

4683A–RFID–02/03

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