Ok , we have for all the ways to do demodulation
AM
product dectectors (pretty easy to make i.e , product mixers , ...etc)
enevlope detectors (very easy to make diode detectors)
For FM
Slope detector ( not worth doing poor quality and is just offseting the carrier to pick up the equivalent changes in amplituded)
Ratio detectors
Foster-Seeley FM detectors
Quadrature FM detector
Phase locked loop (PLL)
For PM
???????????????????
Can somebody list all the ways known to detect phase modulation?
I don't even know one of these?
Also curious how you would do phase modulation???
I know FM and PM are similar and doing FM modulation modulates PM in someways (because changing the frequency changes the period as well)but curious to know if you could ever combined FM and PM together into a different modulation scheme? Kind of like QAM which combines AM and PM modulation together.
Basically I think you can combined (AM and PM) or (AM and FM) but not (FM and PM) as a modulation schematic but correct me if I am wrong?
So the only ways to modulate a wave would be
AM , FM , and PM or any combination except (PM and FM combo)
For the digital modulation schemes they would be just discrete cases of the above.
Ofcourse CW would just be a special case of digital modulation with 2 states on/off keying ....etc
The only other thing we can do is frequency hopping (ie. spectral spreading ,...etc) but these aren't different forms of modulation they are just switching carriers so they are harder to detect from an outsider reciver ,...etc
I think that is every modulation schematic possible. (other then using multiplexing techinques with more carriers ,...etc)
And I am not talking about PWM ,...etc only wireless modulation schematics...
But really itching to know how they do PM modulation/demodulation since I never saw any schematic or discussion on how to do it and why?
Thanks for any help
Seems since FM is so close to PM I would think that the detectors for PM would be similar to the detectors for FM but that is just a guess?
AM
product dectectors (pretty easy to make i.e , product mixers , ...etc)
enevlope detectors (very easy to make diode detectors)
For FM
Slope detector ( not worth doing poor quality and is just offseting the carrier to pick up the equivalent changes in amplituded)
Ratio detectors
Foster-Seeley FM detectors
Quadrature FM detector
Phase locked loop (PLL)
For PM
???????????????????
Can somebody list all the ways known to detect phase modulation?
I don't even know one of these?
Also curious how you would do phase modulation???
I know FM and PM are similar and doing FM modulation modulates PM in someways (because changing the frequency changes the period as well)but curious to know if you could ever combined FM and PM together into a different modulation scheme? Kind of like QAM which combines AM and PM modulation together.
Basically I think you can combined (AM and PM) or (AM and FM) but not (FM and PM) as a modulation schematic but correct me if I am wrong?
So the only ways to modulate a wave would be
AM , FM , and PM or any combination except (PM and FM combo)
For the digital modulation schemes they would be just discrete cases of the above.
Ofcourse CW would just be a special case of digital modulation with 2 states on/off keying ....etc
The only other thing we can do is frequency hopping (ie. spectral spreading ,...etc) but these aren't different forms of modulation they are just switching carriers so they are harder to detect from an outsider reciver ,...etc
I think that is every modulation schematic possible. (other then using multiplexing techinques with more carriers ,...etc)
And I am not talking about PWM ,...etc only wireless modulation schematics...
But really itching to know how they do PM modulation/demodulation since I never saw any schematic or discussion on how to do it and why?
Thanks for any help
Seems since FM is so close to PM I would think that the detectors for PM would be similar to the detectors for FM but that is just a guess?
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