[SI-LIST] Re: [SI-LIST]

Linda,
the PCB reference plane that the monopole antenna can 'see' is what it will
work against; what it will use as a counterpoise. If the monopole and
reference plane are not symmetrical the reference plane will radiate. This
may or may not be an advantage.

    Dave Cuthbert

On Mon, Feb 16, 2009 at 6:35 PM, Tang, Linda (Xin Cai) <LiTang@xxxxxxxxxx>wrote:

> Hi, all,
> I am working on an antenna.
>
> I met a problem as below:
>
> At the connector, there are three signals:
>
> ANT: antenna signal (50R)
>
> ANT_GND: antenna ground
>
> GND: the whole PCB ground
>
> Which ground plane should be the reference ground plane for the 50R
> impedance calculation?
>
> My PCB is 8 layers. The mirror area of the reference ground on all
> layers should be the reference ground plane, yes or not?
>
>
>
> Best regards
>
> Linda Tang
>
>
>
>
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