Superconductor technology: apparatus – material – process – High temperature devices – systems – apparatus – com- ponents,... – High frequency waveguides – resonators – electrical networks,...
Patent
1994-03-09
1996-12-31
Gensler, Paul
Superconductor technology: apparatus, material, process
High temperature devices, systems, apparatus, com- ponents,...
High frequency waveguides, resonators, electrical networks,...
333 172, 333 99S, 505700, 505866, H01P 122, H01B 1206
Patent
active
055894402
ABSTRACT:
High Tc superconducting limiters are designed to operate at two or more levels of input signals. In one waveguide embodiment, multiple half wavelength branch waveguide lines are connected to a main waveguide line. The half wavelength lines are terminated with tuned circuits of a capacitance, made of a ferroelectric material, and an inductance provided by a waveguide line. In another waveguide embodiment, the branch lines are terminated in tuned cavities each having a ferroelectric material. In a microstrip embodiment, multiple half wavelength branch ferroelectric lines of different impedances are connected to a main line. In a second microstrip line embodiment, tuned circuits, with differing L and C values, are connected to a main transmission line through a half a wavelength branch transmission line. The capacitance is made of a ferroelectric material. The conductor, deposited on the microstrip lines, and the waveguides are made of a single crystal high Tc superconductor.
REFERENCES:
patent: 3309626 (1967-03-01), Higgins
patent: 5329261 (1994-07-01), Das
Cohn et al., A High-Power Limiter, IEEE Trans. on MTT, Jan. 1965, pp. 47-54.
Horton et al., A One-Ghz Ferroelectric Limiter, IEEE Trans. on MTT, Sep. 1967, pp. 517-523.
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