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Assume that the The gain measurement of the antenna is shown in Figure monopole antenna has a gain of 5 dBi throughout the frequencies. The measurement is done using comparison method between the two antennas. The responses show the power received with respect to frequency. From the measurement result, (i) Determine the gain of the antenna at 2.4 GHz and 2.7 GHz. (ii) If the antenna must be used at 2.8 GHz, discuss what would be the impact on the received signal. (ii) Discuss the significant of gain in antenna design.
-20 -25 521 (dBm) -30 magnitude 585 90 -45 -50 -55 1.8 2.0 -21 2.2 -27 2.4 2.6 Freq in GHz Antenna under test monopole antenna inopole 2.8 3.0 The S21 Magnitude 3.2