Looking for resources about RF VGA design

[Ruritania]

Hi, all,

does any one here have the experience on the RF VGA design? or have any material on the topic. For example, the gain range:42dB, step: 3dB?

Thanks,

Ruri

 

[vfone]

Re: RF VGA?

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[radiohead]

Re: RF VGA?

You can design the stage for maximum gain and use digital attenuators for gain scaling.

 

[melc]

Re: RF VGA?

Hi, all,

does any one here have the experience on the RF VGA design? or have any material on the topic. For example, the gain range:42dB, step: 3dB?

Thanks,

Ruri

You haven't specified the frequency range.
Take a look at LMH6504 (to 150MHz)

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They are offering for free (if you buy a VGA) an evaluation board.

There are many VGA with digital/analog gain control interface:
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[Ruritania]

Re: RF VGA?

Hi, thank you all for the reply.

The operating frequency I'm talking about is 2.4GHz.

Thanks,

Ruri