What is balun matching?
Matching the output impedance of the power source to the input impedance of an electrical load maximizes power transfer from source to load. When a balanced source is to be isolated from an un- balanced load, the impedance matching transformer is referred to as a balun.
How do you make an antenna matching network?
- Design Broadband Matching Networks for Antennas.
- Specify Frequency and Impedance.
- Understand Load Behavior using Reflection Coefficient and Power Gain.
- Design Matching Network.
- Optimize Designed Matching Network.
- Update Matching Network Elements with Optimal Values.
- Analyze and Display Optimization Results.
Does a balun change impedance?
Current baluns isolate or add impedance to unwanted common-mode current paths, reducing or controlling common-mode current.
What is matching in RF?
A matching network is connected between a source and a load, and its circuitry is usually designed such that it transfers almost all power to the load while presenting an input impedance that is equal to the complex conjugate of the source’s output impedance.
Why use a balun on a dipole?
A dipole is what is termed a balanced antenna. In an ideal world a balun should be used with coaxial feeder (which is unbalanced) to make the transition between balanced and unbalanced systems. The use of a balun will prevent the coax radiating any power or picking up any noise.
What are balun applications?
The most common application of baluns is to interface an unbalanced signal to a balanced transmission line for long distance communications.
How do you characterize a balun?
A balun consists of an “unbalanced” port converted to two “balanced ports”. The unbalanced port can be either the input or the output as the device’s balanced ports would conversely be either the output or the input.