Wave transmission lines and networks – Plural channel systems – Having branched circuits
Patent
1986-05-27
1988-08-09
Gensler, Paul
Wave transmission lines and networks
Plural channel systems
Having branched circuits
333 32, H03H 738, H03H 748
Patent
active
047630876
ABSTRACT:
An impedance matching network circuit of either a T, or Pi-type circuit which minimizes impedance change at the input of the matching network as frequency and/or the load impedance change. This is accomplished in T and Pi-type networks by using a fixed value capacitor or inductance at either the input or output of the network instead of the commonly used variable capacitor or inductance. Further, a switching device can be employed in the T or Pi circuit to selectively reverse the positions of the variable inductance and variable capacitance relative to the input and load sides of the T or Pi circuit.
REFERENCES:
patent: 3132313 (1964-05-01), Alford
patent: 3537010 (1970-10-01), Roza et al.
patent: 3875537 (1975-04-01), Dolby
Rohde, Match Antenna Over 1.5-to-30-Mhz, Range With Only Two Adjustable Elements, Electronic Design, Sep. 13, 1975, p. 96.
Gensler Paul
O'Donnell, III Harry B.
Winger Jon C.
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