| 摘要 |
PURPOSE: A device for measuring an RSSI(Received Signal Strength Indicator) of a receiver is provided to measure RSSI power in a digital region, and to measure power in a base band, thereby precisely measuring the RSSI without temperature variations and noise. CONSTITUTION: An RF band unit(22) amplifies an RF signal, mixes the amplified signal with an RF phase synchronous signal, and converts into an IF band signal to output the IF band signal. An IF band unit(23) passes and amplifies certain bands only among IF band signals, converts a baseband signal into a digital signal, and outputs the digital signal. A baseband unit(20) mixes the digital signal with an output signal of an NCO(Numerically Controlled Oscillator)(25a), obtains I/Q channel signals, and processes a receiving signal by reducing distortions and controlling gains. A central processor(29) uses power of the output signal of the baseband unit(20) as an RSSI.
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