Using an RF filter to remove noise?

Question

So in the past I have been told to use an RF filter to remove/reduce noise; however, I do not know where to start in finding an IC that can perform this.

Here is what is being done: A circuit outputs a very noisy signal, and I am to average the signal out (without significantly modulating the wave) such that an average reading could be found and later analyzed.

So I presume there are 2 questions:

1) Will an RF filter do this?

2) Has 2 options:

If SO, which RF Filter IC should I use under the requirement that it can easily be used with a breadboard?

If NOT, what else should be done to perform this task?

Answer 1

you might try using an inductor in series with the output to act as a simple low pass filter

Answer 2

Use a gallium arsenide front end with the correct matching impedance. Start with a narrow ban-pass filter, then a notch filter, but remember to use yet another low noise amplifier to offset the losses in the filters. Keep the impedance matching networks within limits, or you will degrade the wanted signal.

Dr Antony

Answer 3

You only want to make a measurement on the signal?

just use a low pass filter. Set the frequency of the filter just above the highest frequency that has real information, as opposed to the noise.

An RC filter may be enough, a series R and shunt C.