地面导线环的辐射电阻

地面导线环是变频测深发射天线的一种形式.Wait曾计算了离地面高度为h的小导线环的辐射电阻,但由于所用近似方法的限制,他得出的结果不能用在置于地面的导线环的情况（若令h=0,所给出的辐射电阻将等于∞）.在本文中,我们导出了具有有限半径的地面导线环的辐射电阻表达式（准确的以及近似的）,并给出了数值计算的结果.

RADIATION RESISTANCE OF A WIRE LOOP LAID ON THE GROUND

The wire loop laid on the ground is one type of antenna for parametric depth sounding. J. R. Wait has calculated the radiation resistance of a small wire loop situated at a height h above the ground. But his result is based on an approximate method which cannot be applied to the case of the loop laid directly on the ground （if put h to zero,the radiation resistance so obtained will tend to infinity）. In this paper,we derived both exact and approximate expressions for the radiation resistance. of a loop of finite radius laid on the ground. Numerical results are also presented.