基于多模滤波器概念的宽带天线设计

提出了一种基于多模滤波器概念的宽带天线设计方法.多模宽带滤波器的研究已有多年的历史.本质上讲，谐振天线的辐射单元也是谐振器，同样存在着多个模式.因此，多模滤波器的概念和方法完全可以应用于宽带谐振天线的设计.文中给出了所提出的多模宽带天线的原理，并通过支节加载偶极子演示了典型的设计方法.仿真和测试结果表明，所设计的天线在几乎不影响尺寸的情况下有效地实现了宽带特性.

Design of broadband antenna based on the concept of multi-mode filter

A design method of broadband antennas based on the concept of multi-mode filters is proposed. The multi-mode broadband filters have been researched for many years. In fact, the radiation element of a resonant antenna is also a resonator, and also has multiple modes. Therefore, the concept and design method of multi-mode filters can be applied to design broadband resonant antennas. In this paper, the principle of multi-mode broadband antennas is presented, and the typical design method is demonstrated by stub-loaded dipole. The simulation and measurement results show that the bandwidths of the designed antennas are enhanced with the same sizes.