Why are power measurement and control so important? RF power, rather than voltage, is the primary measure of a wireless signal. In a receiver, signal strength is a key factor in maintaining reliable communications.The unit of power is the watt. However, it is common in most RF and wireless applications to express power in terms of dBm or decibels related to 1 mW. Radio frequency (RF) is a measurement representing the oscillation rate of electromagnetic radiation spectrum, or electromagnetic radio waves, from frequencies ranging from 300 GHz to as low as 9 kHz.



WiFi network access points identified, Radio frequency refers to an oscillation rate of an alternating electric current or voltage or of a magnetic, electric or electromagnetic field or mechanical system in the frequency range from around twenty thousand times per second to around three hundred billion times per second. In the transmitter, the amount of power transmitted is critical because of regulatory guidelines. It's also important for maintaining the range and reliability of the radio link.