As a result, the output power is measured and compared to a set point level in a feedback control circuit so power can be adjusted as required. ![]() In many cases, the transmitter power is controlled automatically. It is essential to know the RF output power because the application specifies it in most cases, and certain maximum values must not be exceeded according to Federal Communications Commission regulations. Transmitter output power measurement is the primary application. What is the main application of RF detectors? This unit of measurement is usually referenced to an impedance of 50 Ω. The table shows the relationship between absolute power and dBm. However, it is common in most RF and wireless applications to express power in terms of dBm or decibels related to 1 mW: ![]() ![]() What is the unit of power measurement in RF applications? It's also important for maintaining the range and reliability of the radio link. In the transmitter, the amount of power transmitted is critical because of regulatory guidelines. In a receiver, signal strength is a key factor in maintaining reliable communications. RF power, rather than voltage, is the primary measure of a wireless signal. Why are power measurement and control so important? RF detectors are used primarily to measure and control RF power in wireless systems. ![]() An RF detector monitors or samples the output of an RF circuit and develops a dc output voltage proportional to the power at that point.
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