Tuesday, July 9, 2024

Measuring the Impedance of a UHF Quadloop

 


Quad loop antenna is indeed has a 100ohms impedance at the feed point. I tried to build a UHF version of the quad and sweep its frequency response using my handy antenna analyzer. 


Quad loop needs a quarter wavelength of 75 ohm cable in order to transform its impedance from 100ohms to 50ohms.


---73 de du1vss