1). Match the following terms related to power. (dBm, dBi, dBd, dB) a) . A value

Question

1).Match the following terms related to power. (dBm, dBi, dBd, dB) a). A value that can be directly converted to power. It is defined as a gain (or loss) with reference to a millivolt. b). A relative gain (or loss) of power. In order to determine the output power, the input power would need to be known. c). Gain in power due to the antenna. This is in reference to an antenna that radiates absolutely equally in all directions. d). Gain or loss in power relative to an omnidirectional antenna. (2). Compare Received Signal Strength Indicator (RSSI), Receive Sensitivity Threshold, and SNR. In your explanation include the following at a minimum.(2a). Which of these is a higher positive number when the signal strength is excellent (as compared to poor)? (2b). Which of these are a higher absolute value (disregarding the sign) with the better signal? (2c). What are the values of each of these with a 60% signal strength (50% signal quality)?

Explanation / Answer

1.

==>dBm---->(a)

Explanation : As dBm is defined as electrical power unit in decibal referenced to 1 miliwatt .Relation is given as SdBm = 10 log10P where P is power level in milliwatt. So from here Power can be easily calculated.

==>dBi----->(c)

Explanation : - dBi refers to the decibel gain of antenna system relative to an "Isotropic Radiator." i.e an antenna that radiates energy equally in all directions .

==>dBd --->(d)

Explanation :dBd refers to the decibel gain of antenna system with reference to a dipole antenna.

==>dB----> (b)

Explanation :dB or decibal is the logarithmic unit used to express ratio of two values of physical quantity. And when referring to power measurement , it is relative gain or loss of power as defined in question in statement (b)

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