一种风车型多频贴片天线

提出了一种新型风车型多频天线, 该天线辐射贴片的结构类似于一个风车, 可以通过增加风车叶片的个数进而增加天线的工作频带数。利用数值模拟调节风车叶片的个数以及叶片的分布, 分别设计具有双频、三频以及四频的风车型贴片天线。此外, 通过在风车叶片上刻蚀单环和双环螺旋环结构的花纹, 可以改变天线的有效电流长度, 使得多频天线可以工作在UMTS (2. 1 GHz)、WLAN (2. 45 GHz)、Wimax (3. 5 GHz)以及X 频段卫星下行通信(7. 2 ~7. 6 GHz)等不同频段。最后, 实验结果与模拟结果一致, 具有较好的工程实用意义与价值。

A Windmill Type Multi-frequency Patch Antenna

The novel windmill type multi-frequency patch antennas are proposed by adding the units of windmill blades. Namely, dual-frequency, tri-frequency and quad-frequency patch antennas are designed according to the numbers and distributions of windmill blades. Furthermore, a single or a double spiral ring is etched on the vane of the windmill, which can change the effective current length of the antenna and effectively adjust the operating bands of the multi-frequency antennas at UMTS (2. 1 GHz), WLAN (2. 45 GHz), Wimax (3. 5 GHz) and X-band downlink satellite system (7.2-7.6 GHz). Finally, the experimental results are in agreement with the simulation results and they have good engineering practical significance and value.