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:
Jan. 06, 1987
Filed:
Jul. 09, 1984
Didier Kaminsky, Paris, FR;
Thomson-CSF, Paris, FR;
Abstract
The invention relates to a quadrupole for resistive matching of a reactance of the RLC type connected in series or in parallel, which permits to compensate for the loss of gain of an amplifier as the frequency rises, in a manner independent of the frequency. This quadrupole comprises two impedance circuits Z.sub.1 and Z.sub.2 in series between an input terminal and an output terminal, and in parallel with these, a third impedance circuit Z.sub.3. It also comprises a fourth impedance circuit Z.sub.4 connected between the point common to the first two circuits Z.sub.1, Z.sub.2 and the point common to the two other terminals of the quadrupole. The reactance which is to be matched is Z.sub.3 if it is of the RLC type connected in parallel. It is Z.sub.4 if it is of the RLC type connected in series. The values of the three other impedances Z.sub.1, Z.sub.2 and Z.sub.4 or Z.sub.3 are related so that the input impedance may be equal to the output impedance.