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:
Apr. 28, 2020
Filed:
Dec. 17, 2015
U-blox Ag, Thalwil, CH;
John Haine, Cambridge, GB;
u-blox AG, Thalwil, CH;
Abstract
An amplifier apparatus () comprises a main linear amplifier sub-circuit () having a main driving signal input terminal () and a main amplifier output terminal (). The apparatus also comprises an auxiliary linear amplifier sub-circuit () having an auxiliary driving signal input terminal () and an auxiliary amplifier output terminal (). A combining network () is operably coupled between the main amplifier output terminal () and the auxiliary amplifier output terminal (), the combining network () having a main-side terminal () and an auxiliary-side terminal (). The main linear amplifier sub-circuit () is arranged to generate, when in use, a main amplified signal in response to a main driving signal applied at the main driving signal input terminal (). The auxiliary linear amplifier sub-circuit () is arranged to generate, when in use, an impedance modifying signal at the auxiliary-side terminal () in response to an auxiliary driving signal and at substantially the same time as the main linear amplifier sub-circuit () generates the main amplified signal, the auxiliary linear amplifier sub-circuit () also being arranged to amplify substantially more than half of each wave cycle of the auxiliary driving signal.