第4章 4.4 3W ⇒ 34.77dBm ,以 e.r.p 计 32.62dBm ;1.8W ⇒ 32.55dBm ,功率小。 4.5 (1)1.5×108 m/s ;(2) 0.95×108m/s。 4.6 2400m,22.12m,0.69m,0.35m,0.33m,0.12m,0.05m。 4.7 ( 1 ) k = 51.3rad / m ,η0 = 377Ω ;( 2 ) H y = 5.3×10−6 A/m ;( 3 ) Sa...