[sdiy] Speed of electrons? (was mass extinction of thedinosaurs)

[Magnus Danielson]

From: "John L Marshall" <john.l.marshall at gte.net>
Subject: Re: [sdiy] Speed of electrons? (was mass extinction of thedinosaurs)
Date: Tue, 24 Jul 2001 19:03:28 -0700

> You are correct; cellular phones running at 1.9 GHz; cordless phones running
> at 2.4 GHz. Hey, these things are full duplex; transmitting and receiving at
> the same time. How did they fit cavity duplexers in such a small
> package?

By not using cavity duplexers!

That is, they probably just run circulators... I don't know. I'm not
into designing these things, just lifting the lid every once in a
while to poke around for fun.

> He-he. A few more GHz, and you are right plumbing time.

Yeah, but even in more modest frequencies (if you dare to call 500 MHz
modest) plumbing is done. I have that on my network analyzer....

Cheers,
Magnus