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. 27, 1987
Filed:
May. 08, 1986
Stefan Barbu, Caen, FR;
U.S. Philips Corporation, New York, NY (US);
Abstract
The invention relates to a high-frequency amplifier which comprises only two cascaded differential stages. The collectors of the transistors (T.sub.1, T.sub.2) of the differential input stage are connected to the emitters of two transistors (T.sub.3, T.sub.4) which have feedback between their collectors and bases and which are biased by means of resistors (R.sub.1, R.sub.2). This input stage forms a resonant circuit. The differential output stage comprises transistors (T.sub.6 and T.sub.7) whose emitters are interconnected by a phase-lead capacitor (C.sub.1) and two resistors (R.sub.8, R.sub.9). Such an arrangement enables a high gain to be obtained over the entire operating frequency range of the amplifier and in particular for high frequencies.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile