From: Paul Burridge
Subject: Re: Where to buy a 5-10W RF-Amplifier
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Date: Tue, 07 Jan 2003 13:13:11 +0000
NNTP-Posting-Date: Tue, 07 Jan 2003 14:40:57 GMT
Organization: Virgin Net Usenet Service
On 6 Jan 2003 22:35:37 GMT, Karsten opined
>I need a RF-Amplifier with 5 - 10 Watts.
>The Outputvoltage is around +/- 20V and it should be able to work at a
>frequency of 2 - 7 Mhz.
>Is that a dream???
It's not a dream, but to prevent it from becoming a nightmare, you
need to establish precisely what specifications you're seeking to
meet. How do you know you "need 5-10Watts"? Is that figure DC power
in, RF power dissipated in the final, RMS power dissipated in the
load, PEP power as displayed on a 'scope.... or what?
How do you know the output voltage "is around +/- 20V"?
What power source are you going to use?
What's the amplifier's input impedance going to have to match?
What sort of load are you having on the output side? What's the
required radiation resistance? If you don't know these details, at
least give us a bit of background as to the desired application.
You could build something like for less than 10 lousy bucks, provided
you can establish all the correct component values within a suitable
"What is now proved was once only imagin'd"
- William Blake, 1793