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Old 17th July 2008, 05:04 PM   #1
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Default Power amplifier at high frequency

I am looking for a chip which can amplify power supply at high frequency (from 400-500MHz). Can you help me? Thanks
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Old 17th July 2008, 06:52 PM   #2
ratza is offline ratza  Romania
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I don't think you'll find a chip amp to go that far.
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Old 17th July 2008, 09:32 PM   #3
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Nothing I can think of will do that. It would not be called an audio chip if it could.

-SL
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Old 17th July 2008, 10:21 PM   #4
lineup is offline lineup  Sweden
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The devices, power transistors,
that can give very high power at high frequencies ( 400-500MHz )
are some rare Radio Transmitter Transistors.

They are used for Radio Broadcast.
They are very, very expensive.
I would not think there are special high power RF chips.
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Old 18th July 2008, 03:40 AM   #5
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Thanks for their advices. Do you have the detail cuircuit of this. I means the circuit is created by single elements such as : trans,...
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Old 18th July 2008, 08:22 AM   #6
frank1 is offline frank1  United Kingdom
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Default What power?

There are RF power modules available for various frequency bands and power levels. Mitsubishi make a range. VHF modules are available up to about 30W output, UHF modules tend to be lower power up to about 10W.
Ebay quite often has them.
Beyond this, you will have to make something which is way OTT for this forum.

Frank
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Old 18th July 2008, 11:18 AM   #7
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Thanks. Can you give its name?
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Old 18th July 2008, 11:17 PM   #8
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What kind of power output are you looking for?
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Old 19th July 2008, 01:46 AM   #9
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power 6W. Can you give a detail circuit for it.
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Old 19th July 2008, 12:33 PM   #10
AndrewT is offline AndrewT  Scotland
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Hi,
there are RF amplifier chips used to boost aerial signals before reaching the tuner input.
I think they work from 100MHz to 500MHz.
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