Argument of a transfer function

Discussion in 'Homework Help' started by adashiu, Apr 29, 2011.

Nov 27, 2008
8
0

Hi Guys !
I need to calculate an argument of a transfer function of this circuit.

I calculated H(jω)=(1+R2*C*jω) / (1+C*(R1+R2)jω)

and |H(jω)|=(√(1+(R2*C*ω)^2)) / (√(1+ω^2*C^2*(R1+R2)^2)

Is it correct ? How to calculate an argument ?

2. jegues Well-Known Member

Sep 13, 2010
735
43
Your transfer function looks good to me.

The argument of the transfer function in the following form,

$\frac{a + jb}{c + jd}$

Is given as follows,

$Tan^{-1}(\frac{b}{a}) - Tan^{-1}(\frac{d}{c})$