悬链线变幅杆
一种无槽的变幅杆，其悬链线形状延伸于其长度的相当大一部分。悬链线形状可以被构造为与螺柱轴线平行（通常在最小直径处），尽管这并非必需。
与相当的圆锥形和指数形变幅杆相比，悬链线变幅杆具有更高的增益和应力。
Catenoidal horn
An unslotted horn with a catenary shape that extends over a substantial portion of its length. The catenary shape can be constructed so that it is parallel to the stud axis (usually at the smallest diameter) although this is not a requirement.
A catenoidal horn has higher gain and stress than comparable conical and exponential horns.