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I would remove all components and make c1=c2=c3=c4=10 nF and measure the insertion loss.
If there is not flat line with loss of about 1dB for your required frequencies, then something is wrong with the connectors and pcb.
There has been comments about the 75 Ohm connector, this is for video and...
I am reading a blog, author: Cadence PCB Solutions, title: What is Signal to Noise Ratio and How to calculate it?
It reads:
''As I stated earlier, calculating SNR can be involved, as well. So, for complex calculations, you divide the value of the desired signal by the amount of the noise and...
If you don't want to start from zero, there are already solutions to experiment with ultrasound sensors in Arduino. Look for HC-SR04 modules from your favorite vendors. You'll be taking measurements in less than five minutes.
There is a set of Razavi's youtube videos that someone has uploaded that treats Electronics1 and Electronics2 material.
Is there a rule of thumb that says which topology has the best noise performance?
CG gives the best noise performance, CE gives the best gain performance, but for gain and...
EEVblog #306 has an episode of that, 520 ps rise time pulse. It cites a design of LTC, now AD, Application Note 47 by Jim Williams. You need to operate a BJT on the avalanche operating region to get very sharp pulses.
I had the impression that I had access to the resistors on the 555 that set the voltage limits, but I guess not, only the control voltage pin is available.
I was told in school that the opamp can perform any mathematical function, be it a comparator, integrator, differentiator, sum...
Yes, output noise is lower than input because noise passes through the 10 dB attenuator.
Input noise is calculated based on the jjx's suggestion, if I undestood it correctly Ni is calcualated by No/0.1, 0.1 being the linear gain of -10dB attenuation.
If we agree that all other variables are...
Thanks jjx that makes sense.
So, for an example to put numbers in perspective:
Considering a 50-Ohm system, I got a 10 dB attenuator connected to a signal generator, -30dBm input power let's say.
Measurement is -40 dBm then. Gain -10 dB. So grouping this together I want to use the formula...
To calculate F, noise factor, I need to find out SNR input, and SNR output. The SNR output I can find with measurements on spectrum analyzer,
but how does one find the SNR at the input? How to measure S and N at the input?
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