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Design Languages >> Verilog-AMS >> Power calculation when a high-frequency sinusoidal voltage source is applied
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Message started by Peng_Li on Oct 4^th, 2019, 8:20pm

Title: Power calculation when a high-frequency sinusoidal voltage source is applied
Post by Peng_Li on Oct 4^th, 2019, 8:20pm

Hi,
In my recent work, I need to calculate the electrical power consumed by a conductor (using Verilog-A).

As we know, the impedance of a conductor varies with the frequency of the electrical excitation applied. For example, its dc resistance is assumed to be R_dc, and the resistance at 20 GHz is assumed to be R_ac (because of skin effect).
The electrical excitation is a sinusoidal voltage source, which is expressed as
V=V₀+V_a*sin(2*pi*freq*t)
where V₀ is the dc component; V_a is the amplitude of the ac component; freq is the frequency; t is the time.

My question is, in the following, which is the correct way to calculate the electrical power consumption of the conductor?
(1) Power consumption on R_ac with both dc and ac voltage component applied
(2) The summation of dc power consumption on R_dc and ac power consumption on R_ac

Any help would be greatly appreciated, thank you.

Title: Re: Power calculation when a high-frequency sinusoidal voltage source is applied
Post by saigoutham on Oct 22^nd, 2019, 6:00pm

Hi Peng,

I think, you need to take sum of Vo*Rdc and average of (Va*sin(2*pi*freq*t))*Rac to find average power consumption.
Did you try running a simulation on existing models for a conductor in Spectre or any other simulator to cross verify 1 and 2?