[Amps] High voltage MOSFETs

[Joe Subich, W4TV]

On 5/3/2017 3:23 PM, Bill Turner wrote:
 > One intriguing possibility with these is direct coupling (through an
 > LP filter and DC isolation of course) to 50 ohm coax

Only on 160 meters for 750 Watts output.  By the time one gets to 27
MHz the optimum output impedance is down around 5 Ohms ... it would
be a real trick to design a broadband output.  The best approach might
be impedance matching in the output filters for each "band".

73,

    ... Joe, W4TV


On 5/3/2017 3:23 PM, Bill Turner wrote:
> For those interested, MIcrosemi has a line of relatively high voltage
> RF MOSFETs:
>
> https://www.microsemi.com/existing-parts/parts/81771
>
> One intriguing possibility with these is direct coupling (through an
> LP filter and DC isolation of course) to 50 ohm coax. No transformer
> needed.
>
> Something to think about.
>
> 73, Bill W6WRT
> _______________________________________________
> Amps mailing list
> Amps at contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>