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(一)同轴电缆的相移常数公式:在射频条件下,同轴电缆的相移常数可用如下简化公式来计算:即β=ω(Lc)~(1/2)=(20/3)πf(MH_2)(εe)~(1/2)弧度/公里=1200f(MH_2)(εe)~(1/2)度/公里 (144)式中f(MH_2)代表以兆赫为单位的使用频率,εe代表电缆的等效介电常数。
(A) Coaxial cable phase shift constant formula: Under the RF conditions, the coaxial cable phase shift constant can be calculated using the following simplified formula: β = ω (Lc) ~ (1/2) = (20/3) πf MH 2 εe ⋅ 1/2 Radius / km = 1200f MH 2 εε ½ km / km where f (MH 2) represents the frequency of use in MHz , εe represents the equivalent dielectric constant of the cable.