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Hi all, i am new to HFSS software and i'm trying to simulate a ten port network. After i simulated it first time, i received all the s-parameters and i checked at fields->edit sources that only port 1 had excitation power amplitude of 1W and all the others had zero. From what i understood when i saw it, i thought that only port 1 should excite the
Hello, I have implemented the following scheme in LTSpice but I don't know what value to choose for R2 and Cinf in order to have theoretical gain Av=1500. The following constraints are imposed: Vcc=10v; VCM=1.5V; vg it's a sine wave with a frequency of 1Khz and R1=15kOhms. I need to simulate the circuit(transient, AC sweep), choosing an appropriate
Hello, I need to simulate the following circuit in LTSpice. I made the scheme but I don't know what value to choose for R2 and Cinf in order to have theoretical gain Av=1500. The following constraints are imposed: Vcc=10v; VCM=1.5V; vg it's a sine wave with a frequency of 1Khz and R1=15kOhms. I need to simulate the circuit(transient, AC sweep), cho
To simulate dynamic mismatch and its possible compensation, you need 1. a mismatch model, e.g. specified as acquisition bandwidth and sampling time skew 2. a hypothetic input signal applied to the ADC pair 3. a compensation filter prototype, e.g. RC or LC low pass
I am reading about RFID systems and designs. And I stumbled upto this Digikey article - . I am really confused with Figure 5 in that article. In the above IC Diagram, I am really confused with Pin 2, Pin 4 Pin 14. How does these three pins work? How is the transmission TX fr
I am asking regarding the voltage drop in DC of the top load transistors. Why in DC we have lower ressistance then ac? Thanks. The dynamic (differential) output resistance ro of a transistor is the inverse slope of the (relatively flat) output curves ID=f(VDS). Hence, this value is relatively large. In contrast, the DC
please resolve this issue as i am new to proteus.i am attaching proteus file and code.
Hi, I am designing an LC filter with a cut-off frequency of 20 kHz for the Class-D amplifier. The filter schematic is shown in Fig.1 top right. I understand how to choose the LC values for the critically damped case for the pure resistive load as shown in Fig. 2. The problem is I want to drive an impedance (400 Ohm + 15 mH) load, where the t
Hi all. I am designing a Capacitive touch sensor using Cypress CY8CMBR3102 IC. Have also attached the circuit diagram. The IC works properly. when any finger is touched to the pad, the LED glows and as soon as the finger is removed the LED goes off, That's perfect. But when the system is OFF and i keep the finger on the Touch Pad and then i swi
Hi. I designed a system with an operational amplifier that must meet the following frequency characteristics: 159205 My layout diagram in LTspice 159206 and it's the characteristic: 159207 Should I change the voltage source in the schematic? And what type should I change
(1) Noise floor level of your Spectrum Analyzer (2) Improper termination for stop band I think (1) is dominant. Show me input signal level of Signal Generator. Show me noise floor level of your Spectrum Analyzer. It depends on RBW, Sweep Time, Pre Amplifier, etc. However dynamic range of it is 90~100dB at most.
The class begins with a presentation of the main concepts and principles of embedded systems software further going ahead with different technologies and covers aspects like test-driven development, code metrics, designing test cases, requirement engineering fundamentals and terms, requirements validation and management, static tests and dynamic te
There are two components to the settling accuracy of the amplifier. Once you use the word "settling", it already suggests that you also look at things dynamically. So, first you have the DC settling - that is where the amplifier output ends at when you wait infinitely long time. This is defined by you loop gain T and that static error is about equa
Hi, i have this circuit that works at 5V will you help me to operate it at 12V? 159000 and what changes should I make to replace the sensor receiver and IR transmitter, with these more easily available? https://win.adrirobot.i
hi, i am doing a project in PIC18f452, it needs a DHT11 temperature and humidity sensor. my problem is DHT11 is not responding to my detection code this is my start sequence void dht11_start(void) { onewire_cntrl = 0; onewire = 0; __delay_ms(20); onewire = 1; __delay_us(30); onewire_cntrl = 1; return; } this is m
Hi, I'd like to lump several questions into one thread if possible, please. How might changing a circuit from a 12V supply to a 3V supply affect circuit performance, if at all? Can a lower supply be detrimental to comparator response regarding chatter that wasn't present on the 12V version? On 12V and on 3V circuits, components are correctl
i built a ruhmkorff coil. the secondary wire is connected to a arduino uno. the arduino uno reads the secondary voltage, every 200 microseconds. it takes the arduino uno 100 microseconds to read a voltage. 1 end of the primary coil is connected to the collector of a tip36 transistor. the other end is connected to the positive terminal of a breadboa
Hi, I migrated recenly from ModelSim to VCS for performance issues (ModelSim was sooo slow for gate-level simulation plus I always had to generate VCD or FSDB and then feed that to PrimeTime which takes a lot of time and disk space, wheras VCS directly generates the SAIF files I want). The performance gain was pretty huge. However I think I can
Hi, I need to calculate and draw asymptotes on the oscilloscope. 158607 The tested system looks as follows: 158608 One change - Rc = 20k Ohms. I know that for voltage Ub1 in range for +-0.1V (approximately) transistor T2 is in the active mode. And i notice that Uwy1 is constant and this voltage