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Design >> RF Design >> Modulated output power versus single tone
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Message started by archmage on Nov 13^th, 2010, 2:25am

Title: Modulated output power versus single tone
Post by archmage on Nov 13^th, 2010, 2:25am

Hi,

I'm just wondering if the single tone measured gain is identical with the gain measured with a modulated signal.

Let's say I have a PA that has G = 25dB and I drive it with Pin = 0 dBm - single tone at 2GHz. If I then drive it with equivalent WCDMA modulated input signal (Pin = 0 dBm) will I get the same Pout? (assuming the PA is far away from being saturated)

Title: Re: Modulated output power versus single tone
Post by RFICDUDE on Nov 14^th, 2010, 5:29pm

Yes, the power is the same so long as the gain is linear.

Title: Re: Modulated output power versus single tone
Post by rfmagic on Nov 15^th, 2010, 1:23am

The integrated power will be the same in both cases.

the gain will be the same no matter what the integrated band is.