本文提出一种新的馈源结构，由金属脊喇叭加载一个介质阻抗壁构成，经优化减小了馈源的体积和重量。
A novel horn feed composed of metallic ridged horn and dielectric impedance wall which has small dimension and weight is introduced.
此处采用在光壁圆锥喇叭内加载一个外形渐变的金属柱体来改变天线的输入阻抗，调节金属柱体的尺寸，包括两端的口径和长度，可以在要求的频段得到理想的输入阻抗。
By modeling the parameters of metal cylinder such as the diameters of both ports and the length of the metal cylinder, the demand input impedance of the conic horn can be obtained.
但不断按喇叭时，若瞬间强电流通过阻抗依然能正常工作，所以会时好时坏。
But continuously press the speaker, if the moment strong current passed impedance can still regular work, quare will like bad.
但不断按喇叭时，若瞬间强电流通过阻抗依然能正常工作，所以会时好时坏。
But continuously press the speaker, if the moment strong current passed impedance can still regular work, quare will like bad.
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