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RF power meter, tuning RF power amps, VNA

Simmon

Jan 30, 2014
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How do you tune RF power amplifiers? do you use an RF signal generator? and you use the RF power meter to measure what? you use the VNA vector network analyzer to measure what for RF power amplifiers?
 

davenn

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Sep 5, 2009
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you use an RF signal generator on the input and you use the RF power meter on the output

you would also use a spectum analyser on the output to make sure the transmitter has a clean signal

Dave
 

Simmon

Jan 30, 2014
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What does it mean to Tune an RF amplifier? tuning what? and how do you tune it? trim pot?
 

Simmon

Jan 30, 2014
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you would also use a spectum analyser on the output to make sure the transmitter has a clean signal

When the transmitter is not clean? what are the other signals of?

Noises from what? EMF? oscillation? crossover?

Does the Transmitter need more filtering to clean it up?
 

Simmon

Jan 30, 2014
76
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The VNA could be used to measure the input and output impedances of the amplifier.

Why do you need to know the input impedance and output impedance of the amplifier?

When is the input and output impedance measurement bad and when is the measurement good? in what ranges
 

Simmon

Jan 30, 2014
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Jan 30, 2014
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What is the VSWR?

Do you use an VNA vector network analyzer to set the VSWR? and tune the RF amplifier to match its source and load impedance?
 

jpanhalt

Nov 12, 2013
426
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Nov 12, 2013
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Hi Simmon,

I thought you had turned over a new leaf. Is your tree bare?

You may find an answer here: http://www.electro-tech-online.com/threads/rf-power-meter-tuning-rf-power-amps-vna.140379/

As my father would say, zu viel ist zu viel.

John

I just received a follow-up from Simmon:

Simmon said:
can you show yourself so i can beat you ass
you act like a real man , where can i find you so i can beat you ass or do you want me to find your IP address and show up to where you live at and beat you ass ?
 
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jpanhalt

Nov 12, 2013
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And yet another threat from Simmon:

Simmon said:
u like stabbing people in the back and think iI will allow that? **** off because iI will come after you

John
 

(*steve*)

¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd
Moderator
Jan 21, 2010
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Danny Davis has come to the end of his very short leash.
 

brevor

Apr 9, 2013
87
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Apr 9, 2013
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You got some too john, here's mine
to scared to show your face?

not a real man? you have a big mouth

remember the internet is really easy to find you

I can find out what type of car you own and where you live at

I can find your IP address and look for you
 
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