一种星载UHF 频段小型化螺旋馈源设计

设计了一种应用于星载UHF频段小型化螺旋馈源，通过在每圈螺旋采用4个U型支节加载部分，使螺旋馈源周长变半径减小，通过减小螺距使得螺旋高度较低，与传统螺旋馈源相比，其纵向高度和径向尺寸减小了1/3和1/5，仿真和测试结果表明馈源具有良好的阻抗匹配特性和辐射特性，满足了设计要求。

Design of a Miniaturized UHF Band Helix Feed in Satellite

A miniaturized UHF helix feed in satellite is designed in this paper. The helix circumference remains unchanged and the helix diameter is reduced with four stubs loaded per turn. The height of helix feed is also reduced by decreasing the turn-to-turn spacing. Compared with the conventional helix feed, the height and the diameter of the miniaturized helix feed are separately reduced by 1/3 and 1/5. The simulated results show that feed with this structure has good impedance matching and radiation characteristics, it can satisfy the design requirements.