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9 Threads found on Diode Impedance Matching
No, the problem is that the DC generated by the diode, in you circuit cannot flows since it's blocked by the C2 capacitor. You have to connect the anode to ground using for instance an inductor having a value high enough not to affect the incoming RF.
Since P types have higher RdsOn than N types for the same size, selective matching of turn on and off using a diode shunted gate resistors helps in tuning the symmetry. Show your requirements by values and results with required load impedance and voltage range. There is a wide range of applications for this and your question is vague.
Pi match attenuators at all ports would help especially in diode mixer case. Active mixers generally don't need very good (and wideband) 50 ohms terminations at the ports. The most important port that requires good termination to get good mixer IMD, is the IF port.
Hi, I am designing a CRLH unit cell with an interdigital capacitor and short circuited stub (with via to ground) in ADS momentum. I want to use this single unit cell as a matching part for my rectifier circuit ( as of now i am using a diode for simplification). Can someone help me in suggesting a way to find the impedance of the unit cell (...)
First, I don't understand the meaning of R1 series resistor in this detector. You have concerns about using a TL on the DC side of the detector, but I don't see any matching components on the RF side of the detector. Check Agilent and Avago papers related to impedance matching of the diode detectors and see how this (...)
hi..i know reflection minimization by termination technique like series,parallel,thevenin,ac minimization and ckt using diode are best.then what are the other method best for signal reflection any innovative idea for that..
Hello! How can I calculate the embedding impedances of a ring diode mixer to get VSWR close to 1 for all the RF, LO, IF ports? If I match the RF port and then trying to match IF port, the RF port becomes mismatched...
Hi friends. I am designing detector using HSMS286 diode from AVAGO. I did not get the S parameter file from website. I made nonlinear model of the same in ADS. But I am not sure that S parameter I am getting is correct. The detector is kind of homodyne detector. The O/P is direct DC. I will use directional coupler or rate race mixer & attach
Here I assume that is about a receiving antenna direct connected to an RF detector. First of all, in your simulation beware about power levels on the detector. The diode impedance is a function of power absorbed, so the diode impedance would change for different powers. A matching circuit would help for (...)