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:
Feb. 16, 2021
Filed:
Dec. 24, 2019
Applicant:
The Regents of the University of California, Oakland, CA (US);
Inventors:
Sudhakar Pamarti, Irvine, CA (US);
Hani Esmaeelzadeh, Culver City, CA (US);
Assignee:
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, Oakland, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03B 5/36 (2006.01); H03B 5/04 (2006.01); H03L 7/081 (2006.01);
U.S. Cl.
CPC ...
H03B 5/364 (2013.01); H03B 5/04 (2013.01); H03L 7/0812 (2013.01); H03B 2200/0012 (2013.01);
Abstract
An ultra-low power (ULP) oscillator that down-converts the current of a resonator to DC, then amplifies it when its still in DC, followed by up-converting the amplified signal back to the oscillation frequency. The disclosed oscillator eliminates the minimum transconductance (gm) requirement of a Pierce oscillator, by processing the signal at DC. In addition, the circuit only requires the DC amplifier's feedback resistor to be greater than the resistive loss of the resonator, i.e., Rf>Rm.