Patent ID: 8923452

Claim:
A receiver comprising: an antenna; a front end amplifier coupled to the antenna; and a detector circuit coupled to the front end amplifier, wherein the receiver is configured to determine a power of a received signal at the antenna based on a gain of the receiver, wherein the gain of the receiver (G 2 ) is determined based on a noise figure of the front end amplifier, and wherein the gain of the receiver, G 2 , is determined by measuring noise amplitude at the detector in an absence of an input signal based on the following formula: P N = G 2 + NF+ 10log 10 ( k )+10log 10 ( T )+10log 10 ( B ) where P N is measured noise amplitude at the detector, NF is a system noise figure, k is Boltzmann's constant, T is absolute temperature and B is bandwidth.