IR detection module with integrated real-time FIR filter implemented in FPGA
Infrared detectors are usually characterized by 1/f noise when operating with biasing. This type of noise significantly reduces detection capabilities for low-level and slow signals. There are a few methods to reduce the influence of 1/f noise, like filtering or chopper stabilization with lock-in. U...
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| Format: | Article |
| Language: | English |
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Polish Academy of Sciences
2024-03-01
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| Series: | International Journal of Electronics and Telecommunications |
| Subjects: | |
| Online Access: | https://journals.pan.pl/Content/130707/21-4377-Achtenberg-sk1.pdf |
| _version_ | 1827307553162264576 |
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| author | Krzysztof Achtenberg Janusz Mikołajczyk Zbigniew Bielecki |
| author_facet | Krzysztof Achtenberg Janusz Mikołajczyk Zbigniew Bielecki |
| author_sort | Krzysztof Achtenberg |
| collection | DOAJ |
| description | Infrared detectors are usually characterized by 1/f noise when operating with biasing. This type of noise significantly reduces detection capabilities for low-level and slow signals. There are a few methods to reduce the influence of 1/f noise, like filtering or chopper stabilization with lock-in. Using the first one, a simple 1st-order analog low-pass filter built-in amplifier usually cuts off 1/f noise fluctuations at low frequencies. In comparison, the stabilization technique modulates the signal transposing to a higher frequency with no 1/f noise and then demodulates it back (lock-in amplifiers). However, the flexible tuned device, which can work precisely at low frequencies, is especially desirable in some applications, e.g., optical spectroscopy or interferometry. The paper describes a proof-of-concept of an IR detection module with an adjustable digital filter taking advantage of finite impulse response type. It is based on the high-resolution analog-to-digital converter, field-programmable gate array, and digital-to-analog converter. A microcontroller with an implemented user interface ensures control of such a prepared filtering path. The module is a separate component with the possibility of customization and can be used in experiments or applications in which the reduction of noises and unexpected interferences is needed. |
| first_indexed | 2024-04-24T18:42:01Z |
| format | Article |
| id | doaj.art-6858de386184486ea09cbfdf1ae7559c |
| institution | Directory Open Access Journal |
| issn | 2081-8491 2300-1933 |
| language | English |
| last_indexed | 2024-04-24T18:42:01Z |
| publishDate | 2024-03-01 |
| publisher | Polish Academy of Sciences |
| record_format | Article |
| series | International Journal of Electronics and Telecommunications |
| spelling | doaj.art-6858de386184486ea09cbfdf1ae7559c2024-03-27T11:06:12ZengPolish Academy of SciencesInternational Journal of Electronics and Telecommunications2081-84912300-19332024-03-01vol. 70No 1175182https://doi.org/10.24425/ijet.2024.149528IR detection module with integrated real-time FIR filter implemented in FPGAKrzysztof Achtenberg0https://orcid.org/0000-0003-3806-9276Janusz Mikołajczyk1https://orcid.org/0000-0002-7091-3521Zbigniew Bielecki2https://orcid.org/0000-0002-2777-620XInstitute of Optoelectronics, Military University of Technology, Warsaw, PolandInstitute of Optoelectronics, Military University of Technology, Warsaw, PolandInstitute of Optoelectronics, Military University of Technology, Warsaw, PolandInfrared detectors are usually characterized by 1/f noise when operating with biasing. This type of noise significantly reduces detection capabilities for low-level and slow signals. There are a few methods to reduce the influence of 1/f noise, like filtering or chopper stabilization with lock-in. Using the first one, a simple 1st-order analog low-pass filter built-in amplifier usually cuts off 1/f noise fluctuations at low frequencies. In comparison, the stabilization technique modulates the signal transposing to a higher frequency with no 1/f noise and then demodulates it back (lock-in amplifiers). However, the flexible tuned device, which can work precisely at low frequencies, is especially desirable in some applications, e.g., optical spectroscopy or interferometry. The paper describes a proof-of-concept of an IR detection module with an adjustable digital filter taking advantage of finite impulse response type. It is based on the high-resolution analog-to-digital converter, field-programmable gate array, and digital-to-analog converter. A microcontroller with an implemented user interface ensures control of such a prepared filtering path. The module is a separate component with the possibility of customization and can be used in experiments or applications in which the reduction of noises and unexpected interferences is needed.https://journals.pan.pl/Content/130707/21-4377-Achtenberg-sk1.pdfir detectorsfirfpgadspnoisefiltering |
| spellingShingle | Krzysztof Achtenberg Janusz Mikołajczyk Zbigniew Bielecki IR detection module with integrated real-time FIR filter implemented in FPGA International Journal of Electronics and Telecommunications ir detectors fir fpga dsp noise filtering |
| title | IR detection module with integrated real-time FIR filter implemented in FPGA |
| title_full | IR detection module with integrated real-time FIR filter implemented in FPGA |
| title_fullStr | IR detection module with integrated real-time FIR filter implemented in FPGA |
| title_full_unstemmed | IR detection module with integrated real-time FIR filter implemented in FPGA |
| title_short | IR detection module with integrated real-time FIR filter implemented in FPGA |
| title_sort | ir detection module with integrated real time fir filter implemented in fpga |
| topic | ir detectors fir fpga dsp noise filtering |
| url | https://journals.pan.pl/Content/130707/21-4377-Achtenberg-sk1.pdf |
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