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Circuit properties of the ideal negative impedance
Device properties of the ideal NIC o
Device properties of the nonideal NIC
2 other sections not shown
2N139 transistors active filters active network alpha variations amplifier-NIC approximately behavior circuit element circuit is stable circuit model circuit properties collector capacity collector current compensating impedances compensating network compound transistor connection current-inversion NIC Darlington compound connection Darlington compound transistor device parameters device properties Doctor of Philosophy drifts effect emitter emitter-to-base impedance emitter-to-base path equal Equations evaluated fractional change fractional sensitivity gain product given device harmonic distortion hence ideal amplifier ideal current amplifier ideal negative-impedance converter ideal NIC ideal voltage amplifier IMPEDANCE CONVERTER impedance level input admittance input impedance left-hand terminal-pair load impedance lower transistor model of Fig negative impedance NEGATIVE IMPEDANCE CONVERTER negative resistance NIC circuits NIC's NICo non-ideal amplifier non-ideal NIC non-linear passive impedance phase shift polynomial port is stable potentially unstable power flow right-hand terminal-pair Section short-circuit shown in Fig signal current two-port device uncompensated upper transistor voltage and current voltage-inversion voltage-inversion NIC