Oscillator circuit for use with high loss quartz resonator sensors
Abstract
The disclosure is directed to a Lever oscillator for use in high resistance resonator applications, especially for use with quartz resonator sensors. The oscillator is designed to operate over a wide dynamic range of resonator resistance due to damping of the resonator in mediums such as liquids. An oscillator design is presented that allows both frequency and loss (R.sub.m) of the resonator to be determined over a wide dynamic range of resonator loss. The Lever oscillator uses negative feedback in a differential amplifier configuration to actively and variably divide (or leverage) the resonator impedance such that the oscillator can maintain the phase and gain of the loop over a wide range of resonator resistance.
- Inventors:
-
- Albuquerque, NM
- Issue Date:
- Research Org.:
- Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
- OSTI Identifier:
- 869887
- Patent Number(s):
- 5416448
- Assignee:
- Sandia Corporation (Albuquerque, NM)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
H - ELECTRICITY H03 - BASIC ELECTRONIC CIRCUITRY H03B - GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER
- DOE Contract Number:
- AC04-76
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- oscillator; circuit; loss; quartz; resonator; sensors; disclosure; directed; lever; resistance; applications; especially; designed; operate; wide; dynamic; range; due; damping; mediums; liquids; design; allows; frequency; determined; negative; feedback; differential; amplifier; configuration; actively; variably; divide; leverage; impedance; maintain; phase; loop; oscillator circuit; differential amplifier; quartz resonator; dynamic range; wide range; negative feedback; wide dynamic; amplifier configuration; resonator sensors; /331/73/310/
Citation Formats
Wessendorf, Otto. Oscillator circuit for use with high loss quartz resonator sensors. United States: N. p., 1995.
Web.
Wessendorf, Otto. Oscillator circuit for use with high loss quartz resonator sensors. United States.
Wessendorf, Otto. Sun .
"Oscillator circuit for use with high loss quartz resonator sensors". United States. https://www.osti.gov/servlets/purl/869887.
@article{osti_869887,
title = {Oscillator circuit for use with high loss quartz resonator sensors},
author = {Wessendorf, Otto},
abstractNote = {The disclosure is directed to a Lever oscillator for use in high resistance resonator applications, especially for use with quartz resonator sensors. The oscillator is designed to operate over a wide dynamic range of resonator resistance due to damping of the resonator in mediums such as liquids. An oscillator design is presented that allows both frequency and loss (R.sub.m) of the resonator to be determined over a wide dynamic range of resonator loss. The Lever oscillator uses negative feedback in a differential amplifier configuration to actively and variably divide (or leverage) the resonator impedance such that the oscillator can maintain the phase and gain of the loop over a wide range of resonator resistance.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 1995},
month = {Sun Jan 01 00:00:00 EST 1995}
}
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