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. 09, 2024
Filed:
Sep. 27, 2021
Applicant:
Quantalrf Ag, Zurich, CH;
Inventors:
Ali Fard, Corona Del Mar, CA (US);
Mats Carlsson, Sundbyberg, SE;
Assignee:
QuantalRF AG, Zurich, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03F 1/34 (2006.01); H01F 38/14 (2006.01); H03F 1/32 (2006.01); H03F 3/21 (2006.01); H03F 3/24 (2006.01);
U.S. Cl.
CPC ...
H03F 1/32 (2013.01); H01F 38/14 (2013.01); H03F 1/3229 (2013.01); H03F 1/3247 (2013.01); H03F 1/347 (2013.01); H03F 3/21 (2013.01); H03F 3/24 (2013.01); H03F 2200/09 (2013.01); H03F 2200/451 (2013.01); H03F 2200/534 (2013.01); H03F 2200/541 (2013.01);
Abstract
A method of operating an amplifier circuit having a transformer arranged so as to establish a magnetically coupled feedback loop between and output of an amplifier and an input of the amplifier. The method includes providing a DC bias current to the amplifier, and further includes increasing the DC bias current to improve a linearity of the amplifier circuit wherein a transfer gain of the amplifier circuit remains constant when the DC bias current is increased. A loop gain of the magnetically coupled feedback loop is set by selecting a coupling factor and turn-ratio of the transformer.