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I added a new excitaion signal by importing ASCII file BUt the cst gives this below and suddenly aborts : The current settings will lead to an extremely long simulation time. You may improve the simulation speed by: 1. checking the frequency range and units settings 2. reducing the simulation duration 3. checking the mesh to avoid very s
Hello all, 157237 I am having a problem I can't seem to diagnose: I have a PLL centered around a ~24 GHz VCO. The block diagram is shown above, defiantly not the best design, open to criticism. The VCO provides a N/16 output which is mixed with a 1.
Assume the probability of Event is a complex number p exp(-i\theta), where |p| is the observed probability. Assume a AND circuit = p1(exp -i\theta1) p2(exp -i\theta2) a NOT operation = (1-p)(exp -i\omega) a "1" = (1-p)exp( -i \omega) + p exp( i \theta) Yes probabilities all interfere because laws of physics would not even start. Say for e
why & how transition fault model give lower coverage as compared stuck at fault model?
I'm trying to design a custom PCB for my ESP32 DevKitC project. Fortunately, schematics for the DevKitC are available for download here. There are just a few things I don't understand: Why are there so many capacitors bet
How close can I place two inductors in a 4 pole 1 GHz filter. The longest inductor's length is 2.8 mm. I ask the question because I will not place them perpendicular to each other. Evelyn
Hi, following statement is taken from a document of Keysight spectrum analyzer: Finding a preamplifier that will give us better sensitivity without costing us measurement range dictates that we must meet the second of the above criteria; that is, the sum of its gain and noise figure must be at least 10dB less than the noise figure of t
I'm looking at the effect of ferrite bead on a pcb to improve Susepability when EMC testing. Looking at the curves on the data sheets . The peak resistance seems to be around the 2mhz range. Does this mean the ferrite bead will filter out frequencys around this range ie the higher the resistance( and reactance) the better the filtering??
suppose you had a metal line. Current metal lines are about 22nm. There are about 22000 atoms in 22 nm since an atom is about 1 pm. Now, spectral atpg performs about 10^12 calculate to get 92% coverage with each large circuit with 35000 faults. Now suppose we look at the microprocessor error that exists in the metal
I am looking for a developer of the interface coding in the EVE SCREEN DESIGNER program for the display that will be used for the device based on ARM STM32. The prototype of the interface is made in Adobe XD and all elements will be exported and prepared to best improve the work of the contractor. If you are interested, please send an email to roba
hi,guys i simulate a inductor with PGS floated in momentum environment to verify if pgs can improve the q value of inductor,but i can not find any improvement,why?can anybody help me sovle this problem? port1 ,2 is the inductor port,3,4 is the pgs gnd port,and metal M1 is used for patterned ground shield. 156577 [
hi,guys i simulate a inductor with PGS floated in momentum environment to verify if pgs can improve the q value of inductor,but i can not find any improvement,why?can anybody help me sovle this problem? port1 ,2 is the inductor port,3,4 is the pgs gnd port,and metal M1 is used for patterned ground shield. 156573 [
In analog audio amplifier, what is the calculation to do concerning the degenerative resistances of the differential input emitters? 156472 As I understand it, the degeneration resistors R1 and R2 in the circuit, together with the Cdom (miller compensation) decide the cut-off frequency and therefore the total band of t
I have some questions concerning analog audio amplifiers: what is the purpose of resistors R1 and R2 in the Wilson current mirror? With what formula are they calculated? Can they be omitted? If they are omitted, what happens to the VAS (Voltage Amplifier Stage)? 156464
Hi, I use an RFID reader for reading FDX tags. It utilizes ASK modulation so I designed a transformer power supply with LDO linear regulator but somewhere it doesn't work good and read range decreased. I think it's due to poor voltage quality because there are several motors , ... nearby. I utilized an EMI filter in series with P and N. but it s
Why is LBIST test coverage low compared to deterministic pattern-based ATPG despite the fact that the most commonly used PRPGs are maximal length LFSRs and thus generate all 2^n possible (bar one) input combinations for an n-input combinational circuit? Ultimately, ATPG patterns, though limited in number, will still be part of the universe of 2^
Hello all, any suggestion how to start implementing the back-projection algorithm in a FMCW MIMO radar? Currently I'm using 2D FFT to get radar image, I would try time-domain algorithms to improve the overall image quality. Thanks, Luca
Hello, i am undergrad student and my final year project is about RF Energy Harvesting. but i am facing problems by using ADS i did some schematics from different published papers but i don't know what kind of parameters should i use or even how to get the efficiency of the rectifier. Also should i do the matching impedance with antenna after
H, RF choke (Inductor) is used to isolate AC signal and DC like wise DC blokcing capacitor is also used for the same purpose. 156021 *figures taken from shown in figure (1), when to use Rbias in place of Lchoke as in Figure shown in Figure (3), when to connect RF bypass capacitor and its purpo
Been looking to improve my knowledge of schematic and PCB design tools. Anyone know if this is worth it? I know there are a bunch of free alternatives which is why I'm asking.