The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 21, 1977
Filed:
Jun. 29, 1976
Nicolle Bernard, Paris, FR;
Gerard Forterre, Paris, FR;
Societe Lignes Telegraphiques et Telephoniques, Paris, FR;
Abstract
A high level broadband VHF isolator using surface propagation made of the waves comprises two gyromagnetic slabs on both sides of a planar metal sheet acting as a double mode transformer or wave launcher between the two terminals of the isolator and the gyromagnetic medium and magnetizing means. The width of the mode transformer is smaller than that of the slabs and radiating slots are provided along at least one side parallel to the propagation direction. The magnetizing field value corresponds to the gyromagnetic resonance at the mid-frequency of the operating band in the neighborhood of the slots and lower elsewhere. Magnetic means are provided to compensate for the temperature variation of the ferrite properties.