Hybrid integrated impedance converter circuit

Wave transmission lines and networks – Negative resistance or reactance networks of the active type – Having negative impedance

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Details

330107, 333213, H03H 504

Patent

active

042086418

ABSTRACT:
A hybrid integrated impedance converter circuit comprising a frequency dependent negative resistance circuit, in which two operational amplifiers are included. Each of the two operational amplifiers has an output terminal and an inverting input terminal, with a negative feedback capacitor being connected between these terminals. The negative feedback capacitor is formed by a stray capacitance which arises between conductors connected to the output and inverting input terminals, which conductors are placed in close proximity to each other.

REFERENCES:
patent: 4091329 (1978-05-01), Fletcher et al.
patent: 4091341 (1978-05-01), Greaves et al.

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