I always thought that was a standard method of demodulating phase information..... I am working on this round thing that can be used to reduce friction rather than simply dragging things across the g
Greetings All: That is 100% correct, my aim is to find a trade-off between simplicity and bandwidth. This is standard practice for any CW transmitter where key-clicks are surpressed to an acceptable
<< What happens if you send a BPSK (instant phase switching) as reference signal to a PLL ? >> An interesting thought. (Apologies to everyone for the previous message which ended at this point. I was
However, I believe the object of Rik's proposal was to decrease bandwidth while retaining as much simplicity in the system as possible. If one can abide the slower phase transitions of the filtered s
<< But unfortunately, any clipping or AGC will distort the amplitude envelope, which in turn will re-introduce unwanted sidebands. >> This may be a matter of semantics, but clipping won't actually "r
Hello Jim & LF group, That is indeed another way to have a look at it. But I would't try to make a perfect envelloped BPSK signal (that would take a filter with a Q of many 1000) but a signal that ha
Dear Rik, LF Group, Another way of looking at this modulation method is that the high Q tuned circuit acts as a narrow filter which removes the unwanted sidebands of your "rude" BPSK - the signal wil
<< So if one would send a 'rude BPSK' signal (as is created with an XOR gate) through a resonant LC-circuit you will get continuous phase shift at the output. The phase shift time will depend on the
Over the weekend I had a closer look at the possibilities of reducing the bandwidth of a BPSk signal by continuous phase modulation. Simple simulations show that the bandwidth of the signal is reduce
At 09:52 23/03/01 -0000, you wrote: Other tasks got in the way so never perused this much further, but the major task putting me off was to work out a way of continuously phase modulating a transmitt
