I had been very impressed with the accuracy of the coupler so I used the same design for my meter. A 6dB pad in the coupler, and a 11.2dB pad at the input to the processing unit provide isolation for the interconnecting cables.
The CPU 5 allows the SWR based upon the progressive wave and reflected wave outputted by a directional coupler 2 to automatically come closer to 1.0. The SWR at this time is also stored in the memory 6. The stored SWR is transferred to and displayed on a display unit 8 through a ...
This "magic" defies linear "common sense" for passive networks but isolators are highly non-linear devices employing special ferrite in powerful magnetic fields. Engineers who design circuits and systems operating above 500 MHz enjoy the utility of the ferrite isolator but these marvelous devices beco...
This "magic" defies linear "common sense" for passive networks but isolators are highly non-linear devices employing special ferrite in powerful magnetic fields. Engineers who design circuits and systems operating above 500 MHz enjoy the utility of the ferrite isolator but these marvelous devices beco...