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. 12, 2010
Filed:
Jan. 10, 2007
Paul H. Gailus, Prospect Heights, IL (US);
Joseph A. Charaska, Melrose Park, IL (US);
Paul H. Gailus, Prospect Heights, IL (US);
Joseph A. Charaska, Melrose Park, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A plurality of varactors are coupled via a first electrode to a shared terminal that in turn can operably couple to a source of control voltage. A second electrode for each varactor couples to a corresponding switch, where each switch couples to at least two different voltage levels. So configured, the second electrode of each varactor can be individually connected to either of two voltage levels. This can be leveraged to control, in coarse steps, the overall aggregate effective capacitance presented by these components. At least some of these varactors can have differing corresponding capacitances, the specific values of which can be selected in order to facilitate relatively equal spacing and substantially equal rates of reactance change versus the control voltage value between aggregate-capacitive reactance ranges as correspond to differing settings for the switches at various levels for the control voltage source.