FIELD: radio engineering, communication.
SUBSTANCE: disclosed is a reader of an object identification system. The reader comprises a receiving-transmitting antenna, a circulator, first and second directional couplers, a power amplifier, a high-frequency signal generator and a mixer. The receiving channel of the reader also includes a compensation device. The compensation device includes a vector modulator, a microcontroller, a high-frequency signal adder, a third coupler and a rectifier.
EFFECT: high sensitivity of the receiving channel of the receiving-transmitting circuit of the reader owing to the use of a compensation device, which compensates for parasitic reflected radiation in the receiving channel of the reader.
2 dwg
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