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:
Jul. 18, 2017
Filed:
May. 13, 2015
Applicant:
Qualcomm Incorporated, San Diego, CA (US);
Inventors:
Cheng-Han Wang, San Jose, CA (US);
Conor Donovan, Oakland, CA (US);
Jesse Aaron Richmond, Oakland, CA (US);
Jin-Su Ko, San Jose, CA (US);
Assignee:
QUALCOMM Incorporated, San Diego, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 1/40 (2015.01); H04B 1/10 (2006.01); H03F 3/19 (2006.01); H03F 3/21 (2006.01); H04B 1/3827 (2015.01); H04B 1/48 (2006.01); H03F 1/56 (2006.01); H03F 1/22 (2006.01); H03F 1/34 (2006.01); H03F 3/193 (2006.01); H03F 3/24 (2006.01);
U.S. Cl.
CPC ...
H04B 1/1027 (2013.01); H03F 1/223 (2013.01); H03F 1/347 (2013.01); H03F 1/565 (2013.01); H03F 3/19 (2013.01); H03F 3/193 (2013.01); H03F 3/211 (2013.01); H03F 3/245 (2013.01); H04B 1/3827 (2013.01); H04B 1/48 (2013.01); H03F 2200/111 (2013.01); H03F 2200/294 (2013.01); H03F 2200/451 (2013.01); H03F 2200/489 (2013.01); H04B 2001/1072 (2013.01); H04B 2001/485 (2013.01);
Abstract
An amplifier includes a gain transistor including a control terminal to receive an input signal. A degeneration inductor is coupled between the first terminal of the gain transistor and ground. A shunt inductor and a capacitor are coupled in series between the control terminal of the gain transistor and ground, and form a filter to attenuate frequencies of the input signal within a frequency range. The degeneration inductor and the shunt inductor form a transformer to provide impedance matching.