Guy,
NIC stands for Negative Impedance Converter. These are active devices that
have a negative resistance i.e. the voltage is 180 degrees out of phase with
the current.
They can be uses to cancel out either antenna capacitive or inductive
reactance to broaden the bandwidth; so called Non Foster Matching
See attached link.
Matching network design using non-Foster .
73
Andrew
----- Original Message -----
From: "Guy Olinger K2AV" <olinger@bellsouth.net>
To: "Andy Ikin" <andrew.ikin@btopenworld.com>
Cc: <antennaware@contesting.com>
Sent: Monday, September 13, 2010 8:07 PM
Subject: Re: [Antennaware] Negative Impedance Converter NIC
I'm probably not the only one...please define NIC. That comes up in
my head as Network Interface Card. 73, Guy.
On Mon, Sep 13, 2010 at 2:38 PM, Andy Ikin <andrew.ikin@btopenworld.com>
wrote:
> Hello Folks,
>
> Is it possible to use NIC to overcome losses in terminated loop antennas?
> If so, how would one measure the NIC input impedance with say a Signal
> Generator and an Oscilloscope to check for correct NIC performance?
>
> 73
>
> Andrew Ikin G8LUG
>
> _______________________________________________
> Antennaware mailing list
> Antennaware@contesting.com
> http://lists.contesting.com/mailman/listinfo/antennaware
>
_______________________________________________
Antennaware mailing list
Antennaware@contesting.com
http://lists.contesting.com/mailman/listinfo/antennaware
|