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pityukecske
Antenna-Theory.com Newbie
Joined: 30 Jan 2013
Posts: 1
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 Posted: Wed Jan 30, 2013 11:20 am Post subject: RF power supply question |
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Hello,
I would like to ask, if the power supply voltage does/does not influence the signal strength of my transmission? I am using PIC12LF1840T39A, and would like to have a stronger signal coming out.
Since the two control lines are CMOS type, i could use 12V instead of the PIC-s power supply (3V), but i'm not sure if that would help me in any way.
Does anyone know?
Thanks, |
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bigSteve
Antenna Wizard
Joined: 14 Mar 2009
Posts: 265
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| Posted: Thu Jan 31, 2013 4:12 am Post subject: |
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| I've found that there is a slight dependence on supply voltage to power amplification. You should look up the allowable supply voltage for your amp in the spec sheet. If it says 2.7-3.3, you should stay in that range. You might get 1 dB more at 3.3 V relative to 2.7 V, but it really depends on exactly what you are using. If you take it up to 12 V, you may fry your transistors. So i f you're looking to increase the gain by a factor of 10, unless the amplifier is designed for that it is not going to do what you expect. |
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andreas80
Antenna-Theory.com Newbie
Joined: 06 Mar 2013
Posts: 1
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| Posted: Wed Mar 06, 2013 9:09 pm Post subject: |
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| As per bigSteve check the supply voltage specification of amp. And also consider designed antenna or antenna requirements. |
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