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Thank you, everyone, for your input, but I am looking for a single-ended differential amplifier rather than fully differential amplifier. Fully differential ones are a bit easier to analyze due to their symmetry. Also, my focus is just the theoretical analysis. I have done it myself, than you...
Looking for a text or video where an analysis of a single-ended to differential BJT amp[lifier is presented in terms of its small signal parameters. Specifically gain of each end, propagation of noise etc.
Hello All,
I am trying to implement Harmonic Balance on a simple diode circuit in Matlab from scratch. I am facing issues with the matrix formation and calculation the Jacobian. Is there anyone who has implemented this before? Is there any resource online for this?
Closing this thread as I found the error. It was to do with the default values of the isolation between the LO to RF, RF to output, and LO to output. Thank you all.
@G4BCH Yes, that is correct for the deterministic phase. But when we talk about phase noise, it should be random and not affected by the phase of the two signals. The output phase noise spectrum is displayed separately from the output power/voltage of the mixing products (pnmx, anmx).
@RealAEL I meant the MIXER block not the MIXER2 block. Yes the noise figure of the mixer is set to 0 dB, as the aim is to study the noise from the sources rather than the mixer itself.
@G4BCH, why is that? phase noise is a stochastic process, thus should show at the output irrespective of the...
Hello Everyone,
I want to plot the baseband phase noise plot in ADS, i.e. I have two sources at the same frequency (with corresponding phase noises), which mix and give a noise at baseband.
For some reason, ADS is showing the baseband noise as zero.
I have attached the images of the noisecon...
@BigBoss, yes, Potentiometers are not used at high frequencies. But, as I have mentioned, my IF is at 50 MHz. This is why a potentiometer would do the job.
Hello everyone,
I am designing a PCB for a diode mixer at 12 GHz.
So far, I have selected Rogers RO4350B as my substrate. Going with a single-layer microstrip design.
As I want to check my output at IF (50 MHz) with a varying load resistance, I am looking for a potentiometer.
The...
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