Frequency selective limiter with temperature and frequency compe

Details Frequency selective limiter with temperature and frequency compe Frequency selective limiter with temperature and frequency compe

1991-06-07

1992-10-20

Gensler, Paul

Wave transmission lines and networks

Automatically controlled systems

Limiting of amplitude

333 242, H01P 1218

Patent

active

051573601

ABSTRACT:
The invention is directed to a frequency selective limiter. A ferrite member supports a signal carrying conductor and magnets establish a transverse magnetic field closely coupled with the conductor through the ferrite. The magnets establish a magnetic field strength versus temperature having a desired characteristic slope. A magnetic shunt, magnetically coupled to the magnets, diverts a portion of the magnetic field lines away from the ferrite for reducing the magnitude of the field coupled with the conductor to a lower value while maintaining the desired characteristic slope of the magnetic field strength with temperature. In a particular embodiment of the invention, the magnetic shunt establishes magnetic field lines within the ferrite which lie at a selected angle with respect to the conductor so that the limiting characteristic of the FSL is relatively flat across the bandwidth.

REFERENCES:
patent: 3911380 (1975-10-01), Lavedan, Jr.
patent: 3946340 (1976-03-01), Simon
patent: 4845439 (1989-07-01), Stitzer et al.

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