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Linear Phase

241 Threads found on edaboard.com: Linear Phase

How to plot frequency response for nonlinear closed loop system

Is there any other methods that can be used to plot the frequency response of the nonlinear closed loop system? Because from what I know, the frequency response/bode plot in matlab can be used only if the system is linear. Thanks in advanced. attached is the nonlinear closed loop system. 137423

Phased Array Simulation

Hello Everyone !!! I'm simulating a linear 4 elements patch array on ansoft designer v2.2 at a single frequency I've placed, in the planarEM, the four patches with separate ports. Now I need to view the antenna beam moving with the phase difference of the port excitation. If i simulate the network and, after, i visualize the far-field,

VCO Laplace Transform not making sense

The Laplace transform is used for the VCO transfer function. Such a function is defined for linear conditions only. Therefore, it applies to the PLL under locked condition only - and this is the key for an answer to your question: The PLL linear transfer function - hence, also the VCO function - is defined in the phase domain only. And for (...)

Hi. I have one practical question; please help! Input is single-phase grid voltage (230 VRMS, 50 Hz, 16 A circuit breaker) feed to full-bridge diode rectifier. Output DC power is 2.3 kW. Adding the output DC capacitors rectifies DC voltage, but the input current becomes non-linear with RMS and peak values exceeding circuit breaker r

Using IGBT/MOSFET in linear power supplies

The best lab supplies in the 70's came from Lambda and they used SCR's with phase control to regulate the minimum dropout voltage required (aka pre-regulator) for the stage 2 Power linear regulator. This way the tradeoff between peak/avg pulse currents and related ripple voltage could be optimized for least power loss and lowest ESR in the power s

Mains noise problem and reduced sensitivity

did you try to reverse the speaker polarity? If feedback is in phase at >unity gain, it will cause oscillation or howling. IF phase shifts 180 deg, at different f, but at a higher feedback, then a quality factor of non-linear response as AG indicated is your problem. Generally cheap mic's have background noise cancellation by having a (...)

Colpitts Oscillator (1-2 GHz band)

You should first do a linear open-loop analysis to see if you have enough gain and phase-shift to satisfy an oscillation condition with the device you intend to use. Once that is done you could investigate it further by using harmonic balance evaluation.

See pp.29-30 of

Phase domain operation of PLL

I think it is the range of angles in which the responce of the pll (phase frequency discriminator) is linear without dead zone.

PLL (phase locked loop) loop bandwidth

In the linear tracking mode, you can frequency modulate the signal with a sine wave and measure the loop response to determine the -3dB point. Loop gain and obviously the VCO gain and range in particular influences the -3dB bandwidth set by just the LPF's but since phase error is limited and non-linear beyond the type II range, this will (...)

Phase Locked Loop (PLL) Lock Range

There is a non-linear effect of Loop BW on Capture range and lock-in time. THe error signal in f must be within the loop bandwidth. Using CMOS analog switches , one can change the bandwidth after locked as long as an offset is not induced or a large transient pF pulse discharge. Or one can use a linear AGC approach to change bandwidth smoothly.

Untheoretical Frequency Change

How have you configured your microstrip , stubs and slots for polarization and reactive loading? Have you considered linear and circular polarization with two near-degenerate orthogonal resonant modes with equal amplitudes and a 90◦ phase difference?

Relationship between PF and THD

I don't think so - PF is the time relation of voltage and current. THD is going to arise from the nonlinear elements (e.g. diode bridge, active switches) in your PFC circuit "doing their thing" in a not-smooth-L-C way. I suppose at different power factors the nuances of harmonic generation might change some, but this is about the operating behavio

Pll linear model for phase noise

Hi all, Is there any way to find the phase noise of a PLL using any model in cadence. I know how to run individual block phase noise using ADEL. But incase of a PLL loop its taking to much of time. That is why I am asking any simlify model to find the phase noise of a PLL. Please help me. Thanks.

How to design specific filter ?

I don't understand what you mean with "known form"? It's a passive RC network, it's transfer function can be derived by applying basic AC network calculation. In this case, only the magnitude matters. Then use a nonlinear solver to fit the transfer curve to the intended magnitude characteristic. You can e.g. use the Excel solver or the MINPACK l

Noise from AC frequency drive ......

Dear Friends , I am driving a circuit i nwhich in which i am using delta ac drive to control speed of 3 phase motor.The drive converts the single phase to 3 phase voltages . The problem is the moment ac drive rotates the motor , I see noise in the 5V linear power supply or smps(meanwell) power supply . The noise (...)