We insert a parasitic capacitance patch on the rear of the layer in order to adjust the impedanceofantenna.
同时在天线臂之间加入了寄生电容，实现阻抗调整的作用。
2
When using frequency sweep meter to measure the input impedanceofantenna, the balanced - unbalanced transformer must be connected between coaxial transmission line and antenna.
用扫频仪测量天线的输入阻抗时，在同轴传输线与天线间应按平衡—不平衡变换器。
3
“When you physically touch the antenna in that spot, you’re changing the impedance characteristics of the antenna, ” said Banos.