Investigation of RF Signal Energy Harvesting

Table 1

Spectrum variations at different time instances.

	Frequencies (MHz)
	931.2	932.6	934	935.4	936.8	938.2	939.6	941
Power variations (dBm)	−22.2	−14.0	−6.7	−4.1	−3.4	−3.4	−4.6	−9.7
	−25.1	−16.1	−10.3	−7.6	−6.8	−6.9	−9.5	−14.5
	−20.6	−11.9	−4.4	−2.2	−1.5	−1.6	−3.3	−9.0
	−29.5	−20.9	−13.7	−10.7	−9.6	−9.7	−11.1	−15.1
	−23.7	−14.6	−8.0	−4.8	−4.0	−4.1	−6.1	−11.2
	−35.8	−28.2	−21.3	−19.0	−17.9	−18.5	−21.0	−24.3
	−30.6	−21.8	−14.7	−12.1	−10.9	−10.7	−12.5	−14.2
	−39.2	−30.1	−24.7	−23.0	−25.9	−31.2	−36.0	−43.4
	−36.7	−27.8	−21.6	−20.7	−20.3	−27.5	−32.1	−41.2