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:
Dec. 31, 2019
Filed:
Dec. 27, 2018
Korea University Research and Business Foundation, Seoul, KR;
Jae-Sung Rieh, Seoul, KR;
Jung Soo Kim, Seoul, KR;
Abstract
A frequency locked loop is disclosed. The disclosed frequency locked loop may include: a voltage-controlled oscillator configured to output a LO signal; a mixer configured to mix an RF signal with the LO signal to output an IF signal; a first IF path part configured to transfer the IF signal; a second IF path part configured to transfer the IF signal; and an error amplifier configured to receive output signals of the first IF path part and output signals of the second IF part as input, where the voltage-controlled oscillator adjusts a frequency of the LO signal based on an output signal of the error amplifier, the first IF path part has the conversion gain decreased according to an increase in the frequency of the IF signal, and the second IF path part has the conversion gain increased according to an increase in the frequency of the IF signal.