Automatic tuning scheme for second order bandstop filters based on phase comparison
| Autor: | Aydin Ilker Karsilayan, Fatima T. Almutairi |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Phase difference
Automatic tuning Computer science Attenuation 020208 electrical & electronic engineering Bandwidth (signal processing) 020206 networking & telecommunications 02 engineering and technology Topology Band-stop filter FLOPS Surfaces Coatings and Films Hardware and Architecture visual_art Signal Processing Electronic component 0202 electrical engineering electronic engineering information engineering visual_art.visual_art_medium Center frequency |
| Zdroj: | Analog Integrated Circuits and Signal Processing. 102:331-340 |
| ISSN: | 1573-1979 0925-1030 |
| DOI: | 10.1007/s10470-019-01540-9 |
| Popis: | A new automatic tuning scheme for bandstop filters is proposed. The method is based on tuning the filter parameters such as center frequency, bandwidth and attenuation by using phase comparison, where the phase difference between the input and the output of the bandstop filter is detected by D flip flops. The tuning circuit consists of D flip-flops, counters, switches, DACs, and passive components. The tuning method was verified by simulation and experimental results. Simulation results show the frequency tuning error of $$0.13\%$$ and the bandwidth tuning error of $$0.88\%$$ at 1.5 GHz with a bandwidth of 478 MHz. Experimental results were obtained using discrete components, showing the frequency tuning error of $$0.22\%$$ and the bandwidth tuning error of $$0.66\%$$ at 1 kHz with a bandwidth of 200 Hz. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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