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:
May. 13, 2014
Filed:
May. 31, 2013
Research IN Motion Limited, Waterloo, CA;
Lizhong Zhu, Waterloo, CA;
George Soliman Mankaruse, Kitchener, CA;
Michael Stephen Corrigan, Waterloo, CA;
Jun Xu, Scarborough, CA;
Kent Arnold Nickerson, Waterloo, CA;
Blackberry Limited, Waterloo, Ontario, CA;
Abstract
The disclosure relates to an electronic circuit for reducing leakage of radio frequency signals from a power amplifier of a wireless communication device is provided. The circuit comprises: a printed circuit board (PCB) having the power amplifier mounted on the PCB; a first electrical track in the PCB providing part of a connection from a low band power input terminal of the power amplifier to a battery terminal; a first capacitor connected to the first electrical track, the low band power input terminal and a ground reference in the PCB; a second capacitor connected in parallel to the first capacitor and connected to the first electrical track, the low band power input terminal and the ground reference; a first high filter choke having a first end connected to the first electrical track and a second end connected to the battery terminal; a second electrical track connected to a low band power input terminal of the power amplifier; and a second high filter choke a having a first end connected to the second electrical track and a second end connected to the battery terminal.