| 21. | A CTCSS decoder is based on a very narrow bandpass filter which passes the desired CTCSS tone.
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| 22. | Depending on the values you choose, it could be a bandpass filter or a notch filter.
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| 23. | The volume Bragg grating technology is also used to design tunable bandpass filters for various light sources.
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| 24. | Theory of microwave narrow-band bandpass filters that have Chebyshev frequency response is stated in monograph.
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| 25. | For example, RLC bandpass filter characteristics can be realized with capacitors, resistors and operational amplifiers without using inductors.
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| 26. | Bandpass filters are often used in astronomy when one wants to observe a certain process with specific associated spectral lines.
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| 27. | A subsequent bandpass filter selects the desired harmonic frequency and removes the unwanted fundamental and other harmonics from the output.
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| 28. | The output signals from the bandpass filters are then lowpass translated to reduce the bandwidth, which reduces the sampling rate.
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| 29. | Therefore, the Earth-ionosphere waveguide behaves like a bandpass filter, selecting this band out of a broadband signal.
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| 30. | This animation shows how the resolution bandwidth of a swept-tuned spectrum analyzer is affected by the IF bandpass filter.
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