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:
Mar. 16, 2010
Filed:
Oct. 11, 2004
Spartak Gevorgyan, Gothenburg, SE;
Harald Jacobsson, Vastra Frolunda, SE;
Per Thomas Lewin, Onsala, SE;
Spartak Gevorgyan, Gothenburg, SE;
Harald Jacobsson, Vastra Frolunda, SE;
Per Thomas Lewin, Onsala, SE;
Telefonaktiebolaget L M Ericsson (Publ), Stockholm, SE;
Abstract
The invention discloses a varactor device () for improved temperature stability, comprising a first varactor () connected to a decoupling network (). The device further comprises a voltage stabilizer (), said stabilizer comprising a capacitor () and a temperature dependent capacitor (), and in that the stabilizer comprises means for connection to a DC-feed (). Suitably, the decoupling network () is connected in parallel to the first varactor (), and the capacitor () of the voltage stabilizer () is connected in parallel to the decoupling network (), the temperature dependent capacitor () of the voltage stabilizer () being connected in series to the diode of the voltage stabilizer ().