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:
Dec. 06, 2005
Filed:
Oct. 03, 2001
Tom L. Davis, Carrollton, TX (US);
Kim E. Beumer, Richardson, TX (US);
Carey Ritchey, Plano, TX (US);
Tom L. Davis, Carrollton, TX (US);
Kim E. Beumer, Richardson, TX (US);
Carey Ritchey, Plano, TX (US);
Microtune (Texas), L.P., Plano, TX (US);
Abstract
Linearizer circuitry is disclosed for providing control signal outputs to operate a controllable attenuator throughout a relatively large dynamic range while maintaining a relatively consistent return loss. Preferred embodiment linearizer circuitry provides a series control current and a shunt control current for coupling to a PIN diode attenuator, such as may be configured in a π network or a T network. Preferably, differential pairs are utilized in providing each of the control current outputs.