Question

2. Convert the following values from dBm to Watts. a. -10 dBm b. -4 dBm c. 0 dBm d. 3 dBm e. 10 dBm f. 19 dBm

3. Design a matching L-Network for a system with (RS = 50, RL = 300, and frequency = 13.56MHz)

4. Explain the meaning of Return Loss (S11).

5. Design a patch antenna to operate at 1.4GHz (The relative permittivity of the FR-4 material is ɛr = 4.6). Specify each of the variable’s values shown below in millimeters (mm).

Answer 1

Convert dom to watts Conversion General formula Pabm (Powe. Jelats = 10 to x103 = 10 Pnlatts Xo3 ☺ - hodom sve (ponien) ulattes 10 " X10-3 = 10-'x103 = 10-4 maths 0 - 40km (tower) watts = 10 to x10 3 = to ? X10-3 = 3.98107170 6X10*4 Watts odbm (Ponier) watts = 10 % X163 = 100 x103 = 103 watts © Bcbm (ponler) watts +3 = 10 to x103 = 10t0 . x 10 10-3 =1.995262315x 1 Xatts = 10 Watts @ lodom (po wier) ahsatts = 10 1906m 19 power Waltes = 10x10 According to chang guidlengs first problem - 0.0794 is solled