"Believing in something does not make it so" .... Really?
What about an isotropic radiator, defined as a theoretical point source, as
used in every antenna modeling program?
What about the "imaginary numbers" which consistently pop up in mathematical
analyses?
The author (Bryan Fields) was careful to point why the use of something that
is not physically realizable is still useful (even required) in certain
kinds of analyses.
I think he made a perfectly valid argument about why the concept of an RF
Ground is important, as he says "in understanding current flow in RF
circuits".
-------------------
Wes Attaway (N5WA)
(318) 393-3289 - Shreveport, LA
Computer/Cellphone Forensics
EnCase Certified Examiner
-------------------
-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of Bryan
Fields
Sent: Thursday, January 22, 2015 11:52 PM
To: towertalk@contesting.com
Subject: Re: [TowerTalk] RF Ground is not a Myth
On 1/19/15, 9:29 PM, James Duffey wrote:
> The RF ground is a useful theoretical construct. This theoretical
construct
> is a result of solid thinking.
Believing in something does not make it so.
> Given that it is hard to realize in
> practice, but it does have its use in understanding current flow in RF
> circuits, the practical problems in implementing a useful ground, and why
> we have problems in circuits that we don't think should have problems.
> Simply put, an RF ground is an infinite source or sink of carriers,
> delivered or received with minimal delay. That of course is not
realizable,
> but understanding why the carriers cannot be delivered or absorbed with
> minimal delay helps a great deal in understanding the practical
> implementation of circuits we design.
Literally nothing is correct in that paragraph.
--
Bryan Fields
727-409-1194 - Voice
727-214-2508 - Fax
http://bryanfields.net
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