Vojko Matko (Avtor)

Povzetek

Generally, AT-cut quartz crystals have a limited scope of use when it comes to high-precision measurement of very small impedance changes due to their nonlinear frequency-temperature characteristics in the range between 0 °C and 50 °C. The new method improving quartz oscillator frequency-temperature characteristic compensation is switching between two impedance loads. By modifying the oscillator circuit with two logic switches and two impedance loads, the oscillator can switch oscillation between two resonance frequencies. The difference in resonance frequencies compensates the frequency-temperature characteristics influence as well as the influence of of fset and quartz crystal ageing. The experimental results show that the new approach using the switching method highly improves second-to-second frequency stability from +/-0.125 Hz to +/-0.00001 Hz and minute-to-minute frequency stability from 0.1 Hz to 0.0001 Hz, which makes the high-precision measurement of aF and fH changes possible.

Ključne besede

quartz crystal;switching oscillating method;temperature characteristic compensation;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UM FERI - Fakulteta za elektrotehniko, računalništvo in informatiko
UDK: 681.5
COBISS: 14953750 Povezava se bo odprla v novem oknu
ISSN: 1424-8220
Matična publikacija: Sensors
Št. ogledov: 884
Št. prenosov: 317
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Slovenski jezik
Sekundarne ključne besede: kvarčni kristali;oscilacijska metoda;temperaturna kompenzacija;
URN: URN:SI:UM:
Vrsta dela (COBISS): Znanstveno delo
Strani: str. 4474-4482
Letnik: ǂVol. ǂ5
Zvezek: ǂiss. ǂ11
Čas izdaje: 2011
DOI: 10.3390/s110504474
ID: 10844049