WHY? this is SO - RF Cafe Forums
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Below are all of the forum threads, including all
the responses to the original posts.
Post subject: WHY? this is SO. Posted: Tue Sep 27, 2005 2:48 am
Joined: Wed Sep 21, 2005 3:40 am
Hello every body:
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
Please tell three reasons for this?
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?
stylist or disco dancer?
If his profession really interests you, then read more about
Harmonics, Linearity, impedance mating, bandwidth,
noise figure, propagation, gain, power, phase noise,
Post subject: Posted: Wed Sep 28, 2005 1:58 am
Joined: Mon Jun 27, 2005 2:02 pm
Todd, that was a really good one.
I would suggest another profession as a comedian for retired Electronics Engineers.
Post subject: Analog/DigitalPosted:
Wed Sep 28, 2005 5:42 pm
Except 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.
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
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 IS analog.
subject: Just for TODD,have a look at thisPosted: Thu Sep 29, 2005 2:10 am
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 telecommunication
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.