Search Engine **www.edaboard.com**

48 Threads found on edaboard.com: **Complex Magnitude**

A pure delay (e.g. an ideal delay line) shows as frequency dependent phase shift in the frequency domain but doesn't affect the **magnitude**. In **complex** signal math, the delay is represented by a rotation operation:
H(jw) = exp(-jωT)

Elementary Electronic Questions :: 10-08-2015 06:58 :: FvM :: Replies: **3** :: Views: **681**

Consider original point of this thread.
Decibel definition should be db20() not db10() for this thread point.
For example, consider S-parameter of Touchstone format
There are following three styles for **complex** value.
(1) dB/Angle
(2) Mag/Angle
(3) Real/Imag
Here Mag=10^(dB/20)

Elementary Electronic Questions :: 09-21-2015 15:10 :: pancho_hideboo :: Replies: **16** :: Views: **8227**

when analyzing the vector of a power source into an AC grid with other power sources, the inverse impedance or Admittance matrix is used to,analyze the power transferred.
When a single source is compared with the **complex** impedance load, the real and imaginary (or reactive power) can be expected, calculated and measured, the latter which is rated i

Elementary Electronic Questions :: 10-14-2014 23:16 :: SunnySkyguy :: Replies: **3** :: Views: **2567**

Your expression for Vout/Vin is NOT correct.
At first, R2 (not R) appears in the numerator.
But more important: The transfer function is **complex** - thus, you must apply **complex** calculations for finding the **magnitude** and phase.

Analog Circuit Design :: 10-21-2013 10:59 :: LvW :: Replies: **3** :: Views: **635**

"replacing s by jw provides the transfer function for physical frequency w, that is, the transmission **magnitude** and phase for a sinusoidal input signal of freqency w"
i could some how understand it ambiguously, but cannot prove it by myself.
The **complex** frequency variable s=sigma+jw is used primarily to compute an

Elementary Electronic Questions :: 07-25-2013 07:37 :: LvW :: Replies: **3** :: Views: **5692**

I have two situations:
1) I am trying to calculate the "Total SAR" inside a solid sphere with known mass. I am first integrating Local SAR over the sphere: Scl : Integrate(Volume(Sphere_1), LocalSAR)
2) I am trying to calculate the average value of the **complex** **magnitude** of the E-Field along:
a) a 2D line
b) a 3D volume

Electromagnetic Design and Simulation :: 07-04-2013 15:57 :: etothe456t :: Replies: **0** :: Views: **1362**

there may be systems with good PM as 60degress, and bad GM as 3dB(because of RHZ after UGB.
The well-known design rules like 60 degree phase margin for no overshoot in transient response are valid for low-pass loop gain characteristic with a dominant pole. For more **complex** transfer functions with arbitrary **magnitude** and phase respo

Analog Circuit Design :: 04-25-2013 07:13 :: FvM :: Replies: **4** :: Views: **1387**

If you measure loop gain in small signal analysis, you'll see that the barkausen criterion (**complex** loop gain = unitity) is met for C = about 2.01 pF. For larger C, loop gain **magnitude** is > 1 at zero phase. The unusual point is that the loop gain is rising versus frequency (at least in the applied measurement configuration).
In Nyquist diagram,

Analog Circuit Design :: 04-10-2013 14:57 :: FvM :: Replies: **3** :: Views: **476**

The second **magnitude**/phase diagram is apparently showing a closed loop transfer characteristic. Although the closed loop can be derived from the open loop frequency characteristic, the phase hasn't the meaning of a phase margin. What do you exactly want to compare?
The general expression of the (**complex**) closed loop transfer characterictic Acl o

Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 01-25-2013 22:55 :: FvM :: Replies: **9** :: Views: **813**

You can excite with an AC voltage source and measure the current or use a current source and measure the voltage.
then you know that:
V/I = Z = R/ (1+ jwRC) that is the impedance of the RC circuit.
w = 2* pi * frequency
Take into account that V, I and Z are **complex** numbers. So you have to measure **magnitude** and phase.
Calculate V/I from your measur

Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 01-13-2013 00:23 :: albert22 :: Replies: **4** :: Views: **552**

Impedance is for AC what resistance is for DC circuits. It relates I versus V. That is I=V/R. The difference is that in AC circuits you have to take in account **magnitude** and phase so the impedance is now represented by a a **complex** number instead of a real number for resistance.

Elementary Electronic Questions :: 11-04-2012 17:34 :: albert22 :: Replies: **2** :: Views: **569**

Yes, they are basically the same idea but there are huge differences also. In a phasor representation we try to represent a wave by its **magnitude** and phase, which essentially translates into a **complex** number in an Argand plane. So 100 Exp would be a vector having **magnitude** 100 and phase (- w t). This is particularly helpful in linear system

Mathematics and Physics :: 10-16-2012 21:05 :: bishshoy007 :: Replies: **4** :: Views: **6555**

To measure a resistance respecticely a **complex** impedance in a simulator, I'll inject a current into the node and measure the voltage.
But all other methods would work in AC analysis as well. The only important point is to achieve correct DC bias without introducing AC feedback or circuit loading.

Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 10-04-2012 21:23 :: FvM :: Replies: **16** :: Views: **1441**

The |Z| plot mainly suggests an unsuitable measurement setup or broken impedance meter.
To determine L and reasonable frequency range for the measurement, you should rather a show **complex** impedance or **magnitude**/phase plot.
Before impedance and LCR meters have been become popular, people used to determine **complex** impedances with a (...)

Electromagnetic Design and Simulation :: 05-30-2012 10:03 :: FvM :: Replies: **2** :: Views: **591**

Hello, I have the following Fourier **complex** signal:
v(t) = 2/πsin(500πt)+1/2sin(1000πt)+1/3sin(1500πt)
I need to find the minimum sampling rate for this signal.
So, according to the Nyquist Theorem, the sampling rate must be twice the highest frequency component contained in the original signal.
So I assume my sampling r

Elementary Electronic Questions :: 04-22-2012 00:31 :: fran1942 :: Replies: **1** :: Views: **638**

In the ADS envelope simulation, assuming the **complex** signal is VCO
I use the following:
mag(VCO)
mag(VCO)
the output are not the same
so anyone can tell me what is the difference between VCO, VCO, real(VCO)

RF, Microwave, Antennas and Optics :: 12-28-2011 06:47 :: Narutolili :: Replies: **2** :: Views: **1080**

The most logical way is to inject a current into the device and to simulate the voltage across it (ac simulation).
If you choose 1 Ampere then the **complex** voltage is identical to the **complex** impedance (X=V/I).
Now you have the choice to display **magnitude** and/or phase as function of the frequency or the locus curve in the (...)

Analog Circuit Design :: 12-13-2011 15:00 :: LvW :: Replies: **1** :: Views: **3990**

What's your particular problem? No arithmetic needed, just connect an AC current source, measure voltage. Different representations (**magnitude**/phase, **complex** impedance) can be selected in the plot window.

Software Recommendations :: 11-14-2011 22:50 :: FvM :: Replies: **9** :: Views: **45**

A Chebyshev type I filter has only poles, one real and a **complex** pair in case of 3rd order. Your simplified assumption about relation of poles/zeros and **magnitude** characteristic doesn't aplly to **complex** pole pairs, I think.

Elementary Electronic Questions :: 11-05-2011 00:06 :: FvM :: Replies: **7** :: Views: **3395**

you know something about **complex** gaussian distributed frequency response? If I have 9 subcarrier,'n', and 3 users,'k', how can I obtain the **magnitude** |Hk,n|? means, the channel response of user k on subcarrier n.. I hope someone can help me.

Digital communication :: 06-20-2011 08:34 :: fahmiazman :: Replies: **0** :: Views: **628**

Last searching phrases:

ask mod | ccs and example | ccs and example | sub adc | lef gds | set top box | ide usb | lef gds | ads example | pwm using pic

ask mod | ccs and example | ccs and example | sub adc | lef gds | set top box | ide usb | lef gds | ads example | pwm using pic