RF power meter, tuning RF power amps, VNA

[Simmon]

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]

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]

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

 

[Simmon]

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]

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]

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]

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:

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 ?

 

[jpanhalt]

And yet another threat from Simmon:

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

John

 

[(*steve*)]

Danny Davis has come to the end of his very short leash.

 

[brevor]

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