Wave transmission lines and networks – Coupling networks – Balanced to unbalanced circuits
Patent
1998-07-01
1999-11-02
Gensler, Paul
Wave transmission lines and networks
Coupling networks
Balanced to unbalanced circuits
333 33, H01P 510
Patent
active
059778423
ABSTRACT:
A broadband, high power balun which includes plural sets of first and second coaxial cables. Each cable has a center conductor and a shield conductor. Each shield conductor of each cable within each set is connected to a shield conductor of the other coaxial cable of the set. The first input lead is connected to a first end of a center conductor of a first coaxial cable of each set. The second input lead is connected to a first end of a center conductor of a second coaxial cable of each set. A second end of a center conductor of a first coaxial cable of a set of coaxial cables provides an output lead for the balun. A second end of a center conductor of a second coaxial cable of a set of coaxial cables provides an output lead for the balun. A second end of each remaining center conductor of each coaxial cable of each set of coaxial cables is connected to a second end of a center conductor of a coaxial cable of another set of coaxial cables. The inventive balun design allows for larger center conductors and lower characteristic impedances than conventional baluns. This permits impedance matching across a broad bandwidth at high power levels.
REFERENCES:
patent: 2925566 (1960-02-01), Jasik
patent: 3217274 (1965-11-01), Alford
patent: 3497832 (1970-02-01), Cohn
Brown Kenneth W.
Gallivan James R.
Sar David R.
Collins David W.
Gensler Paul
Lenzen, Jr. Glenn H.
Raytheon Company
Rudd Andrew J.
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