FIELD: transponders.
SUBSTANCE: transponder, which is placed for example in non-=contact card and which receives energy through antenna as a result of effect from high-frequency variable field on it. Voltage generated by rectifier is sent as set-point effect to clock generator, having clock frequency adjuster. In case of increase of magnetic field strength on antenna, said voltage is adjusted to decrease due to increase of clock frequency of digital circuit. If further increase of clock signal frequency is impossible, then charge forcing generator is enabled to increase data recording speed to ROM. If necessary common link adjuster can be used too. Alternation of clock frequency does not affect mating circuit. This circuit during data exchange with reader works at constant frequency.
EFFECT: higher efficiency.
3 cl, 6 dwg
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