Delay line type surface acoustic wave based sensing circuit system design method

The invention discloses a delay line type surface acoustic wave based sensing circuit system design method. The method comprises the following steps of: 1, manufacturing a delay line type surface acoustic wave device without a sensitive film; 2, manufacturing a delay line type SAW gas sensor compris...

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Hauptverfasser:	SU XIAOMIN, ZHANG TAO, KE XIANTONG, CAO XIAOCHUANG, ZHU HAN, JIANG FENG, SHI XIAOYUN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BASIC ELECTRONIC CIRCUITRY ELECTRICITY IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PHYSICS RESONATORS TESTING
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Beschreibung
Zusammenfassung:	The invention discloses a delay line type surface acoustic wave based sensing circuit system design method. The method comprises the following steps of: 1, manufacturing a delay line type surface acoustic wave device without a sensitive film; 2, manufacturing a delay line type SAW gas sensor comprising a sensitive film; 3, selecting proper parameters for forming a reference oscillation generationcircuit; 4, selecting proper parameters for forming an oscillation generation circuit; 5, selecting proper parameters for forming an oscillation signal mixing processing circuit; 6, selecting proper parameters for forming a low-frequency signal conditioning circuit; and 7, connecting the reference oscillation generation circuit, the oscillation generation circuit, the oscillation signal mixing processing circuit and the low-frequency signal conditioning circuit. The method is reasonable in design, the designed delay line type surface acoustic wave based sensing circuit system is low in power consumption and can genera