Enviar artigo por via de e-mail Generating and studying amplitude-frequency modulation signals using Rigol devices
- Autores: Lemeshko N.1, Gorelkin M.2
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Afiliações:
- АО «Корпорация «Комета»
- ООО «РШ Тех»
- Edição: Nº 2 (233) (2024)
- Páginas: 136-151
- Seção: Test and measurement
- URL: https://journals.eco-vector.com/1992-4178/article/view/629565
- DOI: https://doi.org/10.22184/1992-4178.2024.233.2.136.151
- ID: 629565
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Resumo
The article discusses the issues of practical use of amplitudefrequency modulation (AFM) signals, their generation and measurement of characteristics. An example of generating AFM signals using Rigol DSG3136B-IQ generator and studying their properties using Rigol MSO8204 oscilloscope and Rigol RSA5056-TG spectrum analyzer is given.
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Sobre autores
N. Lemeshko
АО «Корпорация «Комета»
Autor responsável pela correspondência
Email: nlem83@mail.ru
начальник отдела
RússiaM. Gorelkin
ООО «РШ Тех»
Email: mikhail.gorelkin@rsh-tech.ru
менеджер по продукту
RússiaBibliografia
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Fig.1. FFT result for a signal with AFM with single-tone amplitude and frequency modulation, fA = 1 kHz and fCh = 4 kHz
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Fig.2. FFT result for a signal with AFM with single-tone amplitude and frequency modulation, fA = 4 kHz and fCh = 1 kHz
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Fig.3. FFT result for a signal with AFM with single-tone modulation in amplitude and frequency, fA = fЧ = 4 kHz
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Fig.4. FFT result for a signal with AFM with single-tone modulation in amplitude and frequency, with fA = fCh = 4 kHz, m = M = 0.8
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Fig.5. FFT result for the signal: a – with single-tone FM, fCh = 2 kHz, m = 5; b – with AFM at fA = 500 Hz; c – with AFM at fA = 2 kHz
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Fig.6. FFT results obtained with frequency modulation by a smooth signal at Δf = 100 kHz: a – in the absence of AM superposition; b – when superimposing polyharmonic AM with a maximum frequency of 20 kHz
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Fig.7. Block diagram of a signal detector with AFM
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Fig.8. Block diagram of a modulator that generates a signal with amplitude-frequency modulation
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Fig.9. Schematic diagram of a modulator that generates a signal with AFM
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Fig. 10. Rigol DSG3136B-IQ AM generator settings tab
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Fig. 11. Installation for studying signals with AFM in the time domain: a – diagram; b – photograph
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Fig. 12. Installation for studying signals with AFM in the frequency domain: a – diagram; b – photograph
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Fig. 13. Oscillogram of a signal with AFM in the persistence mode with a sweep duration of the order of one period
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Fig. 14. Cursor measurements along the envelope to calculate the AM depth: a – for minimum; b – for maximum
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Fig. 15. The result of statistical measurements for a signal with AFM
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Fig. 16. Results of measurements of the occupied signal bandwidth with AFM
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Fig. 17. Spectrogram of a signal with AFM at sinusoidal AM and FM
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