Effect of Removing Bias Voltage on Circuit Output, Carrier, and Sidebands Amplitudes

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#1 21669842 19 Sep 2013 09:12

Hatef Abdollahi Hatef Abdollahi

Anonymous

Post #1
21669842 19 Sep 2013 09:12

what happens when bias voltage is removed from a circuit ??? what effect does this removal have on the output signal ??? how does it affect the carrier and side bands amplitudes ???
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#2 21669843 19 Sep 2013 10:00

DAVID CUTHBERT DAVID CUTHBERT

Anonymous

Post #2
21669843 19 Sep 2013 10:00

I assume you are referring to a solid state linear RF amplifier amplifiying a Double Sideband signal.

Removing the bias will change the amplifier operation from typically Class AB to Class B. Distortion will increase resulting in greater 3rd order intermodulation products close to the carrier.

How does it affect the amplitudes? For the same drive power the amplitudes of both the carrier and sidebands will be reduced.
#3 21669844 19 Sep 2013 11:05

John Steave John Steave

Anonymous

Post #3
21669844 19 Sep 2013 11:05

I think you may refers to a electronics circuit whose biasing voltage to be change with respect to amplitude of the given circuit. which you will be better understand to know about just visit http://en.wikipedia.org/wiki/Biasing the link and further emphasize try to know better "biasing(biasing)":http://actpcb.com/blog/ following oscillator circuit.
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Effect of Removing Bias Voltage on Circuit Output, Carrier, and Sidebands Amplitudes

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