Communication arrangement comprising powerful integrated amplitude-modulation means

摘要

In a communication arrangement ( 1 ) provided for transmitting data (DA) to a transponder ( 2 ) which arrangement includes a data source ( 5 ) for delivering data (DA) and includes a carrier signal generator ( 6 ) for generating a carrier signal (CS) and includes modulation means ( 7 ) to which can be applied the data (DA) and the carrier signal (CS) and which modulation means are provided for modulating a carrier signal (CS) in accordance with the data (DA) and for delivering a modulated carrier signal (CSM) to transmitting means ( 8 ) having an input resistance ( 9 ), the modulation means ( 7 ) have a changeable output resistance ( 10 ) which forms a resistance network together with the input resistance ( 9 ) of the transmitting means ( 8 ), and resistance change means ( 25 ) for changing the output resistance ( 10 ) in accordance with the data (DA).