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Impedance Transformation

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59 Threads found on edaboard.com: Impedance Transformation
you start with expected outputs for V, I and wave shape( sine , square or 3 level or 5 level )and well defined inputs. define intended application load. then choose topology That works best. If you are certain it is sine wave, then understand impedance transformation from load to source lowers by N squared and MOSFET RdsOn must be <= 2% of this fo
The discrete balun and output filter combination has several degrees of freedom, one of it is the impedance of the center junction. One approach is to make the left side performing the impedance transformation so that the right pi filter acts as an additional low pass that can be omitted without changing the impedance (...)
CST have optenni software to do impedance transformation designs. but im not very familiar with that. you can look for online videos on that..
To ignite a plasma, you'll need a rather high electric field strength. In don't believe that it can be achieved in a parallel resonance configuration without impedance transformation. Do you have any references describing a similar low power electrodeless lamp?
Hello guys, I am currently making a design including a GSM module which has a 50 ohm impedance output for the antenna. However I am interested in using a dipole (73 Ohm img 43Ohm) antenna with this module. I have been searching around for either a dedicated , or discrete balun that can handle this transformation, with no luck. Does anybody h
................... P.S my dipole is precisely 50 OHM and so is the coaxial cable so no need for impedance transformation. I only need to eliminate the coax shield currents. How did you achieve that ? ... dipoles are 75 Ohms by nature ( folded ones 300 Ohms) ... what impedance matching did you do ? Dave
Because you mentioned "step up to 50 ohms", means the PA output impedance is lower, and usually this kind of transformers use 25 ohms coax cables.
Hello everybody, For my application I need wideband (10MHz-1.9GHz) impedance transformation (1:4), but I need it to be balanced input, balanced output. Could I use this kind of impedance transformer to do this? 217.34.103.131/pdfs/TCM4-19+.pdf Best regards.
i need to design a Coaxial impedance transformation which as a part of a complex antenna ,but i am not sure about the feed in feko. i use the waveports,then meshed it has wrong in the port.could anybody can give me some suggestion.plz
i would not do it that way. you show an elliptical lowpass filter. If you make use an open circuited stub to approximate the L-C shunt resonator, then you simply set the electrical length of the stub to be quarterwave where the L-C element resonated in frequency. You choose the impedance of the stub transmission line to approximate the reacta
By "hole" do you mean a via between your signal trace and ground? If yes, the main requirements are that the hole/pad diameter is less than lambda/4 of your design frequency. This hole condition is required for it to not radiate (losses) and the length of the via should be less than lambda/4 in order to avoid an impedance transformation at the shor
hi, i want to design an expeonential tapered microstrip line for impedance transformation from 50 to 100 ohms.now i caluclate w(width of M/S) using tline calcuator and w2=5w.now for exponent factor of m/s line i used a=1/L* ln(z0/ZL) but i dont know how to find exponent factor for ground???that is also tapered in such a way that its widt and M/S l
So you want to impedance match a radio with antenna for maximum efficiency and have a transformer somewhere along the line. impedance matching can be done on either or both sides of transformer. It is only a question of what is the most practical alternative. Assume components have been added resulting in conjugate match between antenna and transfo
See this thread about TI CC2520, a 2.4 GHz radio: Is it a related type of problem? According to that link should impedance matching at least for first harmonic be high impedance matched (reflective) as it affect TX efficiency. My practical tests with CC2520 shows that also. It can be a dif
Real or imaginary part of what? impedance?
depends also on frequency -> substrate loss or coupling or changed impedance transformation if taken into account.
Your patch itself very likely doens't show a real impedance. Your resonance is due to a combination of the wierd impedance of the patch at 4.55 GHz and the impedance transformation due to the quarter wave transformer. Of course at 4.55 GHz your quarter wave transformer no longer functions as a quarter wave transformer. (...)
What does impedance transformation mean with regards to antenna? For most folk, this means to alter the driving point impedance by adding some sort of matching scheme. This is usually a network of matching components/devices , between the the energy source and the antenna driven point. Stretching the meaning a little, it might
Hi all, What does impedance transformation mean with regards to antenna? Is this transforming the input impedance(Z11) of an antenna to the desired value? Can an L section using lumped components manipulate the resonant frequency of an antenna? Regards, Vineeth
Hi! I`ll work with for very first time. I want to use it for current measurement through current transformer. I have current transformer with impedance of 50 omhs and transformation ratio 50A to 0.05A on the secondary coil. Can you give m