Wave transmission lines and networks – Coupling networks – With impedance matching
Patent
1989-04-05
1990-08-21
Gensler, Paul
Wave transmission lines and networks
Coupling networks
With impedance matching
333246, 336200, H01P 502
Patent
active
049510126
ABSTRACT:
An impedance transformation comprising a plurality of elementary tranformers which can be used as impedance converters for radio frequency antennas of a nuclear magnetic resonant tomograph system. At least one combination of a parallel circuit and a series circuit using inner conductors and the outer conductors exists at the primary side of the transformer and at the secondary side of the elementary transformers. Nearly all arbitrary transformation ratios can be obtained with the line transformers of the invention.
REFERENCES:
patent: 3106688 (1963-10-01), Johnson
patent: 3882432 (1975-05-01), Bowman et al.
patent: 4494100 (1985-01-01), Stengel et al.
patent: 4839616 (1989-06-01), Herzog
Oppelt Ralph
Vester Markus
Gensler Paul
Siemens Aktiengesellschaft
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