弾性表面波センサー内蔵発振回路及びバイオセンサー装置

Japanese Patent JP4325624

B2

To provide a surface-acoustic-wave-sensor included oscillator circuit that is unlikely to cause separation of an electrode film due to application of a bias voltage and that is capable of stably operating even if liquid is adhered thereto. A surface-acoustic-wave-sensor included oscillator circuit 31 has interdigital electrode 33 and 34 formed on a piezoelectric substrate and a reaction film that is formed so as to cover the interdigital electrodes 33 and 34 and that is bound to a target substance or a binding material to be bound to the target substance. A surface acoustic wave sensor 32 capable of detecting a bit of mass loading on the basis of a variation in frequency is connected as a resonator in the surface-acoustic-wave-sensor included oscillator circuit 31. Direct-current cutting capacitors 36 and 42 are connected in series to the surface acoustic wave sensor 32, and the direct-current cutting capacitors 36 and 42 respectively form impedance matching circuits in the surface-acoustic-wave-sensor included oscillator circuit 31.

WO/2018/170258	QUANTITATIVE LIQUID TEXTURE MEASUREMENT APPARATUS AND METHODS
JPH09512345	High selectivity chemistry sensor
JP7209432	Measuring device, measuring method and computing device

Kenjiro Okaguchi
Koji Fujimoto
Michio Kadota

JP2005515092A

September 02, 2009

September 08, 2004

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MURATA MANUFACTURING CO.,LTD.

G01N29/02; G01N5/02; G01N29/00; G01N29/24; G01N29/36; H01L41/08; H01L41/18; H03B5/04; H03B5/30

JP2238357A
JP2003115743A
JP2306706A
JP9126979A
JP2051145B2
JP3429493B2
JP2122242A
JP4148844A
JP2004304766A
JP4307351A
JP1221626A

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