Can someone suggest where I should look for a used tunable RF oscillator around
1 MHz that can be phase modulated from an external input?- posted
11 years ago
Need RF oscillator, phase modulation capable
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- posted
11 years ago
around 1 MHz that can be phase modulated from an external input?
Depending on what you are doing a Direct Digital Synthesizer might be a good way to do what you are trying to do. Another thought is to use quadrature modulation on a fixed 1MHz source.
If you are looking for a 1 MHz VCO with a frequency adjust, it may be tough to translate that to phase modulation. I suppose you could build some kind of PLL.
I think we need more info to give better advice.
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- posted
11 years ago
1 MHz that can be phase modulated from an external input?
A Rhode & Schwarz SMDA should do that. I recently sold mine for about $100
-- Failure does not prove something is impossible, failure simply indicates you are not using the right tools... nico@nctdevpuntnl (punt=.) --------------------------------------------------------------
- Vote on answer
- posted
11 years ago
around 1 MHz that can be phase modulated from an external input?
Simplest approach -which may or not satisfy your unstated requirements:
If you just want some discrete phases (e.g 4, as in QPSK), you could start with on oscillator at 4 times the frequency and digitally generate the 4 phases. Then, choose the one you like and, if required, try to filter out harmonics.
Pere
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- posted
11 years ago
around 1 MHz that can be phase modulated from an external input?
If a square wave is OK, you could use the VCO from a 4046 type part.
George H.