i have designed my circuit, but i am confused about impedance matching. i know we can use a resistor for matching, but is it possible to use a capacitor or inductor for matching the impedance in a circuit.
This is just 50 to 75Ω. We are talking about more general matching not limited to real match real impedance. If we want real resistance matching with loss, that would be a cake walk.BroadWave Technologies might be able to assist you with this application. We manufacture a wide variety of coaxial impedance matching pads also called minimum loss pads. These devices are used to transform between different impedances. Typical insertion loss is 5.7 dB. Custom impedances are available. Follow this link to our website for standard devices:
or feel free to contact the factory for a custom device at an off the shelf price.
You're correct. I mistakenly used 50 as the reactance of the inductor when it should have been 25.In my calculation inductor is 1.53nH. I double checked already. And the simulation show that the value got to be correct. As you can see the normalized impedance go between 0.5 to 1 and also the other way back. No if and buts about this.
If you are going to build this, here is a web site that calculates very small inductors like this:very much thanks guys ... for helping me .... especially yungman... let me connect it and test it.. and post my results guys....
As I said, I would prefer to do it with distributed element like a tx line to avoid parasitic. If you are interest, we can talk more about your stack up of the pcb and we can do a distributed design that you don't need any components, everything on pcb trace. At 2.6GHz, you have to be careful in choosing components where is distributed element has no such problems. Particular in your case, a quarter wave length trace will do the trick.very much thanks guys ... for helping me .... especially yungman... let me connect it and test it.. and post my results guys....