Guy,
This link should work now.
http://www.ieee.li/pdf/viewgraphs/matching_network_design_non_foster_impedances.pdf
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 11:51 PM
Subject: Re: [Antennaware] Negative Impedance Converter NIC
Hi, Andy. Thanks.
However, attachments do not make it through the reflector. Please
embed the link url in the text proper and resend.
73, Guy.
On Mon, Sep 13, 2010 at 4:17 PM, Andy Ikin <andrew.ikin@btopenworld.com>
wrote:
> 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
>>
>
>
>
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