A VSWR Meter Using a Power Sensing Termination

Transmitted power detection is important in wireless basestation applications in order to insure proper geographical coverage and to meet radiated power regulations. If the power detection is done between the transmitter and antenna then some system performance characteristics may also be measured. Problems with the antenna, antenna cabling and connectors may be detected by measuring the power reflected from defective or inoperable components. Measuring the output power from the transmitter verifies the performance of the transmitter from the oscillator to the final stage of power amplification. Measuring the transmitter output and power reflected from the antenna provides a monitor for the portions of the system that are most susceptible to failure.