Hello,

1) I somewhat know the answer to this question but just want to clarify. In order to design the impedance matching, I will need to know the load impedance and the source impedance to begin with. Correct?

2) Let's say I have a circuit designed which is the "load" circuit of my setup. How would I go about measuring its input impedance since this is what is necessary to design the impedance matching circuit?

3) I would also like to know of any easy to obtain software that may be useful for impedance matching. I am presently trying to get my hands on ADS from my university but if there are any other software which are helpful that you know off, that would be great.

Regards

 

Yes, you need to know the source and load impedance for impedance matching.
A network analyzer can measure impedance.
What type of circuits are you trying to match?

 

I think my problem lies in the same arena as your question. I have two LED Circuits with different Resistance. One LED Circuit (Circuit 1) will not work while the other one (Circuit 2) is fine, adding Resistance to the other Circuit seems to balance the load, but I seem to lose light by the resistance level that achieved balance. And also, what are Diodes used for in connecting LED Lighting Strips in a Circuit, like we're trying to block the flow of energy in the wrong direction.

 

Circuit 1 where ?
Circuit 2 Where ?

Ramesh

 

Also, balancing LED currents is not anything like impedance matching to accomplish maximum power transfer, usually in AC or RF circuits...

 

Did someone say these were university questions?

 

Hello,

1) I somewhat know the answer to this question but just want to clarify. In order to design the impedance matching, I will need to know the load impedance and the source impedance to begin with. Correct?

2) Let's say I have a circuit designed which is the "load" circuit of my setup. How would I go about measuring its input impedance since this is what is necessary to design the impedance matching circuit?

3) I would also like to know of any easy to obtain software that may be useful for impedance matching. I am presently trying to get my hands on ADS from my university but if there are any other software which are helpful that you know off, that would be great.

Regards

Answer 1: Yes

Answer 2: Depending on the frequency you're looking at, and your finances, you can measure the impedance with anything from a Vector Network Analyzer to a cheap noise bridge.

Answer 3: The ARRL Handbook has tons of great information on this, including some Pi-network design software for high power amplifiers.

Eric