Quadrupole for matching of a reactance, independently of the ope

Details Quadrupole for matching of a reactance, independently of the ope Quadrupole for matching of a reactance, independently of the ope

1984-07-09

1987-01-06

Gensler, Paul

Wave transmission lines and networks

Coupling networks

With impedance matching

333 33, 333170, H03H 738

Patent

active

046350055

ABSTRACT:
The invention relates to a quadrupole for resistive matching of a reactance of the RLC type connected in series or in parallel, which permits to compensate for the loss of gain of an amplifier as the frequency rises, in a manner independent of the frequency. This quadrupole comprises two impedance circuits Z.sub.1 and Z.sub.2 in series between an input terminal and an output terminal, and in parallel with these, a third impedance circuit Z.sub.3. It also comprises a fourth impedance circuit Z.sub.4 connected between the point common to the first two circuits Z.sub.1, Z.sub.2 and the point common to the two other terminals of the quadrupole. The reactance which is to be matched is Z.sub.3 if it is of the RLC type connected in parallel. It is Z.sub.4 if it is of the RLC type connected in series. The values of the three other impedances Z.sub.1, Z.sub.2 and Z.sub.4 or Z.sub.3 are related so that the input impedance may be equal to the output impedance.

REFERENCES:
patent: 2029014 (1936-01-01), Bode
patent: 2093665 (1937-09-01), Tellegen
patent: 2165086 (1939-07-01), Alford
patent: 2718622 (1955-09-01), Harkless
patent: 3302133 (1967-01-01), Buschbeck et al.
patent: 3879689 (1975-04-01), Seidel
Wireless World, vol. 85, No. 1524, Aug. 1979, London, "Passive Notch Filters-1", pp. 63-66 and 86. Figures 1, 5; p. 63.

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