Amplifier with frequency characteristic compensating reactance has current-inverting negative impedance converter containing broadband amplifier element with feedback

摘要

The device (202) has at least one broadband amplification element with an input impedance in the form of an amplifier reactance for compensating the input signal source reactance (35). The amplifier element is a current-inverting negative impedance converter or INIC (41) containing a broadband INIC amplifier element with its output fed back to both inputs and the second input earthed via INIC impedances. Independent claims are also included for the following: a use of the device as a preamplifier in an ultrasonic device.