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Title: Apparatuses and methods for tuning center frequencies

Patent ·
OSTI ID:1238801

Apparatuses and methods for tuning center frequencies are described herein. Examples of tuning described herein including tuning using feedback from the resonator. Variable gain feedback for tuning of acoustic wave resonators is provided in some examples. An example apparatus may include a resonator and a feedback loop. The resonator may be configured to receive a tuning signal and to provide a feedback signal. The feedback signal may be based on the tuning signal. The feedback loop may be configured to receive the feedback signal from the resonator. The feedback loop further may be configured to provide the tuning signal to actively tune a center frequency of the resonator. The tuning signal may be based on the feedback signal.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC04-94AL85000
Assignee:
Sandia Corporation (Albuquerque, NM)
Patent Number(s):
9,270,281
Application Number:
14/051,818
OSTI ID:
1238801
Resource Relation:
Patent File Date: 2013 Oct 11
Country of Publication:
United States
Language:
English

References (8)

AlN Microresonator-Based Filters With Multiple Bandwidths at Low Intermediate Frequencies journal August 2013
Capacitive frequency tuning of ALN micromechanical resonators conference June 2011
High-performance crystal oscillator circuits: theory and application journal June 1988
Single-chip precision oscillators based on multi-frequency, high-Q aluminum nitride MEMS resonators conference June 2009
Electronically variable time delay in piezoelectric media patent August 1983
Phase-shift oscillator having ladder-type saw filter feedback circuit patent February 1999
Oscillation circuit and electronics using the same patent September 2004
Tunable piezoelectric micro-mechanical resonator patent September 2005