基于时变电荷源计算空间电磁场的严格推导

现有教科书中关于辐射子空间电、磁场强度的求解途径一般都是利用电流源进行的。本文从时变电荷源的角度,利用一对正负时变电荷(通常称为电振子)推导辐射子空间电、磁场强度,并对其合理性进行了证明。从物理本质来看,可以认为电振子才是产生空间场的根本原因。同时得出结论:空间电荷也可以当做计算场的基本源。本研究对理解电磁场激发源的物理本质大有裨益。

Strict Deduction to Compute Space Electromagnetic Field Based on Time-varying Charge Sources

In present textbooks,a radiator space electric field intensity and magnetic field intensity are usually solved by means of current sources. In the view of time-varying charge sources,this study figure out a radiator space electric field intensity and magnetic field intensity based on a pair of time-varying charges（ a positive one and a negative one） usually called an electric vibrator which,in the perspective of physical essence,can be thought as the root cause of space fields. This paper prove its rationality and conclude that pace charges should also be counted as a basic source in computing the fields. This study is expected to make some contribution to the understanding of the physical essence of electromagnetic excitation sources.