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. 29, 2013
Filed:
Aug. 16, 2012
Lizhong Zhu, Waterloo, CA;
George Mankaruse, Kitchener, CA;
Michael Corrigan, Waterloo, CA;
Jun Xu, Waterloo, CA;
Kent Nickerson, Waterloo, CA;
Lizhong Zhu, Waterloo, CA;
George Mankaruse, Kitchener, CA;
Michael Corrigan, Waterloo, CA;
Jun Xu, Waterloo, CA;
Kent Nickerson, Waterloo, CA;
Research In Motion Limited, Waterloo, Ontario, CA;
Abstract
The disclosure relates to an electronic circuit for attenuating harmonics in a power amplifier. The circuit comprises: a printed circuit board (PCB); a first electrical track in the PCB providing a connection from a high band power input terminal of the amplifier to a battery terminal; a first capacitor connected to the first track, the high band power input terminal and a ground reference in the PCB; a first high filter choke connected to the first track and to the terminal; a second electrical track connected to a low band power input terminal of the amplifier; a circuit implemented on the PCB and connected to an output terminal of the amplifier for an output signal from the amplifier, comprising a first filter and a low pass filter, the first filter connected to a 0 ohm resistor which is connected to the low pass filter.