Tham khảo tài liệu 'communication systems engineering episode 1 part 8', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Lecture 10 Link Budget Analysis and Design Eytan Modiano AA Dept. Eytan Modiano Slide 1 Signal attenuation R The signal suffers an attenuation loss L - Received power PR PT L Received SNR Eb N0 Eb PR Rb Antennas are used to compensate for attenuation loss - Capture as much of the signal as possible L 4nd X 2 PR PT gtgr l L free space loss d distance between Tx and Rx À. signal wavelength Eytan Modiano Slide 2 Antenna Gains Gr AR4n X2 Ar is the effective area of the antenna For Parabolic antenna AR nnD2 4 n illumination efficiency factor n D dish diameter Gr n nD X 2 pR PTGTD2n 4d 2 Eytan Modiano Slide
