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. 04, 1991
Filed:
Dec. 06, 1988
Applicant:
Inventor:
Anthony A Lane, Northampton, GB;
Assignee:
Siemens Plessey Electronic Systems Limited, Chessington, GB;
Primary Examiner:
Int. Cl.
CPC ...
H03H / ;
U.S. Cl.
CPC ...
333245 ; 333262 ; 334 56 ; 357 51 ;
Abstract
A circuit arrangement which includes a switched inductor comprises a spiral inductor and a MESFET coupled in parallel for switching the spiral inductor in and out of a circuit. The MESFET has at least two gates, at least one of which and at least one section of at least one turn of the spiral inductor, are all mounted adjacent to one another on an active mesa. The switched inductor thus enables parasitic capacitances to be reduced and saves space on the mesa.