Chuck:
The Bandpass Filters are 3 pole Chebychev. They were designed
and simulated using RFSIM99. They are fairly wide since the filters
were designed for a general coverage receiver rather than ham band
only. They are laid out for SMD caps and inductors. The layout is
posted at
<http://users.wildblue.net/wb6dhw>
The layout will be changing slightly because I need to add biasing
on the switches( done on the schematic), I am going to separate the RF
ground from the supply ground, and I am going to include provision for
a 1 to 1 transformer on the input.
Dave - WB6DHW
--- In [email protected], "chutton12000" <[EMAIL PROTECTED]> wrote:
>
> David:
>
> Can you tell us a little bit about the bandpass filter?
> Butterworhth, Chebychev or Elliptic? How many orders?
>
> I'd be interested in acquiring a few of them if they are being laid
> out in a way that makes filter prototyping easy: pads for both the
> common Toko tunable inductors and inductors with leads and small
> toroids.
>
> Chuck
>
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