WHY? This is SO - RF Cafe Forums
Post subject: WHY? this is SO. Posted: Tue Sep 27,
2005 2:48 am
Joined: Wed Sep 21, 2005
Every one of us is aware of this fact that we always
make the transmission of our signals in analog form.Why we do not
Our information signal is in digital form in
most of modern technologies but we use analog signals as carrier
of our information signal.Receiver side has to filter the received
signal to extrect informatic signal.
Please tell three reasons
Post subject: Posted:
Tue Sep 27, 2005 11:49 am
Don't get me wrong Naveed, I like
you. I think you're the best thing that has happened to this website
forum for a long time.
But have you ever considered having
a different profession?
Like hair stylist or disco dancer?
If his profession really interests you, then read more about
Harmonics, Linearity, impedance mating, bandwidth,
figure, propagation, gain, power, phase noise,
Post subject: Posted: Wed Sep 28, 2005
Joined: Mon Jun 27, 2005 2:02
Todd, that was a really
good one. I would suggest another profession as a comedian for retired
subject: Analog/DigitalPosted: Wed Sep 28, 2005 5:42 pm
when you get down to an atomic scale, where you get real quantum
effects, there is no such thing as a truly digital signal.
ALL digital signals are inherently and unavoidably analog in
nature - it's just that we interpret them as a ONE or a ZERO. Even
classic TTL digital circuits have specifications like VIL, VIH,
VOL, and VOH, noise margin, rise and fall times, etc.
communications engineering is in large part the selection of waveforms
to communicate what we need to communicate. Some signals appear
more "digital", but they are always at root analog, because voltages
and currents are not limited to certain values.
When I first
started doing digital design, a co-worker came into my office and
said "All the world's an analog stage, where digital circuits play
bit parts." Well, it's not just bit parts any more, but analog it
certainly is. The designers of 3 GHz cpu clock rate computers cannot
ignore wave effects, and "all that Maxwell's equations stuff". Digital
Post subject: Just for TODD,have a look at thisPosted: Thu Sep
29, 2005 2:10 am
Joined: Wed Sep 21,
2005 3:40 am
I was shocked to read that you like me but no problem.
u have suggested a job like dancer and hair stylist instead of a
I am very very very very sorry to
say that I can't do this.
I like these professions but don't
want to be a part of them so sorry a lot.
Thanks for your suggestion.
Send more suggestions at:
I am waiting.
Again thanks but sorry dear.