Variable Analog Delay Lines - Electronic Circuits Projects Diagrams Free

AndyWhittle · 16th October 2002, 08:52 AM

Does anyone have any ideas of how to make/source a programmable variable delay, sutiable for use with a rf waveform upto about 15MHz. Its got to be changable on the fly (ie real time) :?:

**mechie** · 16th October 2002, 12:08 PM

Delay lines are common in audio processing (echo, flaging etc).
I wonder if the techniques could be pushed to this frequency...

Bucket Brigade delay lines should result in a simple circuit (output would be time-quantinised).

A fast A-D converter feeding into a FIFO shift register which feeds a fast D-A (output would be time and magnitude-quantinised).

Both of the above would use a variable clock frequency to achieve the delay required :? .

AndyWhittle · 17th October 2002, 11:30 AM

Would a Bucket Brigade delay line go to 15MHz???

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16th October 2002, 08:52 AM	(permalink)
AndyWhittle	Variable Analog Delay Lines Does anyone have any ideas of how to make/source a programmable variable delay, sutiable for use with a rf waveform upto about 15MHz. Its got to be changable on the fly (ie real time) :?:

16th October 2002, 12:08 PM	(permalink)
mechie	Bucket Brigade delay lines ? Delay lines are common in audio processing (echo, flaging etc). I wonder if the techniques could be pushed to this frequency... Bucket Brigade delay lines should result in a simple circuit (output would be time-quantinised). A fast A-D converter feeding into a FIFO shift register which feeds a fast D-A (output would be time and magnitude-quantinised). Both of the above would use a variable clock frequency to achieve the delay required :? .

17th October 2002, 11:30 AM	(permalink)
AndyWhittle	Would a Bucket Brigade delay line go to 15MHz???