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Content Provider | IET Digital Library |
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Author | Maezawa, K. Fujino, S. Yamaoka, T. Mori, M. |
Abstract | The frequency delta-sigma modulation (FDSM) technique was applied to the microphone sensors. The FDSM is a superior analogue-to-digital conversion technique, which outputs wide band, large dynamic range digital signals without precision analogue components. In this implementation, a microwave cavity resonator having movable membrane on its one end, together with a gain block consisting of a heterojunction field effect transistor, was used for sound-frequency converter. The output of this converter (frequency modulated intermediate signal) was sampled and converted to 1-bit delta sigma modulated digital signals. The noise shaping behaviour with a clear signal peak was demonstrated for the fabricated devices. |
Starting Page | 1651 |
Ending Page | 1652 |
Page Count | 2 |
ISSN | 00135194 |
Volume Number | 52 |
e-ISSN | 1350911X |
Issue Number | Issue 20, Sep (2016) |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/el/52/20 |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/el.2016.2538 |
Journal | Electronics Letters |
Publisher Date | 2016-08-16 |
Access Restriction | Open |
Rights Holder | © The Institution of Engineering and Technology |
Subject Keyword | A/D And D/A Convertor Analogue-Digital Conversion Analogue-to-digital Conversion Technique Cavity Resonator Converter Delta-sigma Modulation Delta-sigma Modulation Microphone Sensor Digital Signal Fast Fourier Transform FDSM Technique Frequency Delta-sigma Modulation Technique Frequency Modulated Intermediate Signal Sampling Heterojunction Fast Fourier Transformation Integral Transforms Membranes Microphones Microwave Cavity Resonator Microwave Circuit And Device Microwave Frequency Converter Microwave Resonator Movable Membrane Precision Analogue Component Sensing Device And Transducers Sensor Sonic And Ultrasonic Transducers Sound-frequency Converter Waveguide And Microwave Transmission Line Component Word Length 1 Bit |
Content Type | Text |
Resource Type | Article |
Subject | Electrical and Electronic Engineering |
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