APPARATUS AND METHOD FOR MEASURING SIGNAL USING SINC FUNCTION

• US 20130139599A1
• Filed: 08/09/2012
• Published: 06/06/2013
• Est. Priority Date: 12/05/2011
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: LEE, Yeol ho, CHOI, Youn Suk, LEE, Soo Suk, LEE, Woo Chang
• Application Number:
  US13/570,966
• Publication Number:
  US 20130139599A1
• Time in Patent Office: Days
• US Class Current: 73/602
• CPC Class Codes: G01N 2291/0423 Surface waves, e.g. Rayleigh waves, Love waves
• CPC Class Codes: G01N 29/022 Fluid sensors based on microsensors, e.g. quartz crystal-microbalance [QCM], surface acoustic wave [SAW] devices, tuning forks, cantilevers, flexural plate wave [FPW] devices microdevices per se B81B
• CPC Class Codes: G01N 29/341 with time characteristics
• CPC Class Codes: G01N 29/42 by frequency filtering or by tuning to resonant frequency
• CPC Class Codes: G01N 29/46 by spectral analysis, e.g. Fourier analysis or wavelet analysis spectral signal processing per se G06F17/14

Abstract

This disclosure describes an apparatus for sensing a target using a sinc function, a surface acoustic wave (SAW) sensor system including the same, and a method of measuring a target using a sinc function. The apparatus for measuring a target using the sinc function may measure an output signal from a SAW sensor with high precision and reliability.

Claims

1. An apparatus for measuring a target using a surface acoustic wave (SAW) sensor comprising:

an input signal transmitting part for transmitting an input signal to a SAW sensor, the input signal comprising a sinc function; and

an output signal receiving part for receiving an output signal from the SAW sensor.

2. The apparatus according to claim 1, wherein the input signal transmitting part comprises a sinc function generator and a digital-to-analog converter.

3. The apparatus according to claim 2, wherein the input signal transmitting part further comprises a modulator and a filter.

4. The apparatus according to claim 3, wherein the input signal transmitting part further comprises an amplifier.

5. The apparatus according to claim 1, wherein the output signal receiving part comprises an analog-to-digital converter and a signal analyzer.

6. The apparatus according to claim 5, wherein the output signal receiving part further comprises a filter and a demodulator.

7. The apparatus according to claim 6, wherein the output signal receiving part further comprises an amplifier.

8. A surface acoustic wave (SAW) sensor system comprising:

an input signal transmitting part for transmitting an input signal to a SAW sensor, the input signal comprising a sinc function;

the SAW sensor; and

an output signal receiving part for receiving an output signal from the SAW sensor.

9. The SAW sensor system according to claim 8, wherein the input signal transmitting part comprises a sinc function generator, a digital-to-analog converter, a modulator, an amplifier, and a filter.

10. The SAW sensor system according to claim 8, wherein the output signal receiving part comprises a filter, an amplifier, a demodulator, an analog-to-digital converter, and a signal analyzer.

11. The SAW sensor system according to claim 8, wherein the SAW sensor comprises:

a piezoelectric substrate,

an inputting part for converting a first electrical signal into a first SAW,

a sensing part for sensing a target by generating a second SAW corresponding to the first SAW; and

an outputting part for converting the second SAW into a second electrical signal.

12. The SAW sensor system according to claim 11, wherein at least one of the inputting part and the outputting part is an inter-digital transducer.

13. The SAW sensor system according to claim 11, wherein the SAW is selected from the group consisting of a flexural plate wave, a Love wave, a surface skimming bulk wave, and a Lamb wave.

14. The SAW sensor system according to claim 11, wherein the target is at least one selected from the group consisting of a protein, DNA, a virus, a bacterium, a cell, a tissue, a gas, temperature, pressure, and humidity.

15. The SAW sensor system according to claim 8, wherein the SAW sensor is selected from the group consisting of a biosensor, a gas sensor, a temperature sensor, a pressure sensor, and a humidity sensor.

16. The SAW sensor system according to claim 8, wherein the output signal receiving part detects a change in at least one of frequency, phase, and intensity of the output signal from the SAW sensor.

17. A method of sensing a target, the method comprising:

generating a first sinc signal;

converting the first sinc signal into a first electrical signal with a predetermined frequency bandwidth;

inputting the first electrical signal into a surface acoustic wave (SAW) sensor;

sensing the target using a first SAW;

outputting a second SAW corresponding to the sensed target;

converting the second SAW into a second electrical signal;

converting the second electrical signal into a second sinc signal; and

comparing the first sinc signal with the second sinc signal.

18. The method according to claim 17, wherein the SAW is selected from the group consisting of a flexural plate wave, a Love wave, a surface skimming bulk wave, and a Lamb wave.

19. The method according to claim 17, wherein the target is at least one selected from the group consisting of a protein, DNA, a virus, a bacterium, a cell, a tissue, a gas, temperature, pressure, and humidity.

20. The method according to claim 17, wherein comparing the first sinc signal with the second sinc signal comprises comparing a change in at least one of frequency, phase, and energy amplitude of the first sinc signal and the second sinc signal.