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:
Oct. 18, 1983
Filed:
Feb. 02, 1981
Herman H Wieder, San Diego, CA (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
An improved apparatus modulates greater currents at higher frequencies over extended bandwidths. In addition to conventional biasing and modulation a beam of electrons is directed onto a heterojunction-diode device disposed to receive the modulating electron beam. The heterojunction diode device is fabricated from two different semiconducting materials having identical crystalline lattice structures, different fundamental energy bandgaps and different impurity types of different concentrations. This combination of properties assures greater output currents, higher frequency modulation and increased bandwidths.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile