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VSWR_BRIDGE

2016-05-17 04:49  
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VSWR_BRIDGE
Works well through 450 MHz to for measuring and matching VHF and UHF antennas. If identical load impedances are placed at J2 and J3, signals at opposite ends of R3 are equal and in phase and there is no output at J4. If impedances are different, output proportional to difference appears at J4 Impedance values can be from 25 to 100 ohms, although drcuit is designed for optimum performance at 50 ohms.-J. Reisert, Matching Techniques for VHF/UHF Antennas, Ham Radio, July 1976, p 50-56.