At 12:42 PM 2/20/2002 -0800, JaMi Smith wrote:
>(Go ahead, ask Protel what
>an RF Choke is, and how to make one in Protel).
Printed components tend to not have fixed sizes, unless they have fixed
values or functions. If one wanted to make an RF choke footprint, one would
have to have a separat
On 04:43 PM 20/02/2002 -0500, Abd ul-Rahman Lomax said:
>At 12:42 PM 2/20/2002 -0800, JaMi Smith wrote:
>
>>(Go ahead, ask Protel what
>>an RF Choke is, and how to make one in Protel).
>
>Printed components tend to not have fixed sizes, unless they have fixed
>values or functions. If one wanted
Abdul,
Well ~
You're almost right . . .
A typical RF Choke on a PCB is a certain length conductor (typically 1/4
wavelength), which is acting as an inductor, from one active part of an
RF circuit (typically the Collector of an RF Transistor) to another part
of the circuit, typically power (or s
Not all problems in design are solved by software tools, however finding an
adequate work around is often easier than adding the functionality to the
tool set.
I have only had limited experience in RF layout and coincidentally it did
involve an inductor supplying power to an RF transistor. In sc
ssage-
From: Ian Wilson [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, February 20, 2002 2:38 PM
To: Protel EDA Forum
Subject: Re: [PEDA] RF footprints
On 04:43 PM 20/02/2002 -0500, Abd ul-Rahman Lomax said:
>At 12:42 PM 2/20/2002 -0800, JaMi Smith wrote:
>
>>(Go ahead, ask Protel what
&
On 02:46 PM 20/02/2002 -0800, JaMi Smith said:
>Abdul,
>
>Well ~
>
>You're almost right . . .
Rant On
What the hell is your point - are you deliberately being prickly? My turn
to be pedantic and pick up on your misconceptions. Am I peeved - yes. JaMi
(I persist in this weird spelling since
o
produce errors, or minimally "Special Circumstances" which may not be
understood by the next engineer or designer that works on the board.
JaMi Smith
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, February 20, 2002 3:21 PM
To: Protel ED
On 02:46 PM 20/02/2002 -0800, JaMi Smith said:
>Abdul,
>
>Well ~
>
>You're almost right . . .
>
>A typical RF Choke on a PCB is a certain length conductor (typically 1/4
>wavelength), which is acting as an inductor, from one active part of an
>RF circuit (typically the Collector of an RF Transisto
his issue to be presented to Protel.
Really, not ranting,
JaMi
-Original Message-
From: Ian Wilson [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, February 20, 2002 3:25 PM
To: Protel EDA Forum
Subject: Re: [PEDA] RF footprints
On 02:46 PM 20/02/2002 -0800, JaMi Smith said:
>Abdul,
>
&g
>
> What the hell is your point - are you deliberately being prickly? My
turn
> to be pedantic and pick up on your misconceptions. Am I peeved - yes.
JaMi
> (I persist in this weird spelling since you do but I must admit that I
> thought it was a typo when I first saw it)
Might either be a tro
On 04:25 PM 20/02/2002 -0800, JaMi Smith said:
>In view of your understanding of the problem, I take it then that you
>too agree that there is a need for this issue to be presented to Protel.
>
>Really, not ranting,
>
>JaMi
No, but care must be taken with language - mine was carefully chosen to
ruary 2002 11:25
> To: Protel EDA Forum
> Subject: Re: [PEDA] RF footprints
>
>
> On 04:25 PM 20/02/2002 -0800, JaMi Smith said:
>
> >In view of your understanding of the problem, I take it then that you
> >too agree that there is a need for this issue to be
> p
-
From: Damon Kelly [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, February 20, 2002 5:51 PM
To: Protel EDA Forum
Subject: Re: [PEDA] RF footprints
Yes, I would really like a "Tie Net" entity!
Particularly (or most commonly) for the "analog ground" and "digital ground&qu
> A typical RF CHOKE is lossy (deliberately) and hence one
> would not normally
> use a relatively high-Q PCB track to implement a choke.
Er, not necessarily. Having a lossy choke (series DC) is good in that it widens the
bandwidth, but note that if you have a high power amplifier, drawing
Hi Randol,
> > Brian G. and others wrote a spiral track generator for
> > Protel. Use that.
>
> OOooo!! Where's that?! Does it lock the tracks together so
> that they don't get independently pulled and the group can be
> drug together? I've not tried to make a "footprint" like
> this,
kbit.mp3 -1.4M
-
---
- Original Message -
From: "Darren Moore" <[EMAIL PROTECTED]>
To: "'Protel EDA Forum'" <[EMAIL PROTECTED]>
Sent: Thursday, February 21, 2002 5:44 PM
Subject: Re: [PEDA] RF footprints
|
| Hi Randol,
|
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