| 摘要: |
| 设计了一副中心频率为2 GHz的四分之一波长U型贴片天线。采用U型槽加载减小了探针
电感，使天线实现双谐振工作，通过将双频比调整到接近为1以展宽天线的工作频带，设计
出的天线的带宽达49%(VSWR<2)。利用短路墙加载技术，使天线的尺寸在四分之一波长
左右
，减小了天线尺寸，天线的尺寸仅为295 mm×40 mm×12 mm。实际制作了该
天线，测试结果与
理论分析基本吻合，验证了设计的正确性。该天线结构简单，便于设计以及加工制作，同时
方便集成于移动通信设备中。 |
| 关键词: 移动通信设备 微带贴片天线 U型槽 短路墙加载 |
| DOI： |
|
| 基金项目:西南交通大学科技发展基金资助项目 |
|
| Design of a Quarter wave U Shaped Patch Antenna |
| CHEN Kai-ya,HUANG Zong-sheng |
| (Institute of Electromagnetic,Southwest Jiaotong University,Chengdu 610031,Chi
na) |
| Abstract: |
| A quarterwave Ushaped patch antenna with center frequency at 2 GHz is
designed. Ushaped and shortwall loading techniques are used to broaden the
im
pedance bandwidth and smaller the antenna size, respectively. As a result of the
introduced slot in the Ushaped patch, the large inductive reactance component
of the feed probe associated with a thick substrate is found to be reduced, whic
h makes the bandwidth be easily broadened. And the short-wall loading techni
que makes the antenna resonant at quarterwavelength, which can reduce the size
of the antenna to 1/4 of the ordinary rectangular patch antenna in theory. The i
mpedance bandwidth of the antenna is 49%(VSWR<2), and its size is 29.5 mm
×
40 mm×12 mm.The antenna is made and the test results are fully consiste
nt with the theoretical analysis. The structure of the antenna is so simple as t
o design and manufacture, and it is convenient to be integrated in mobile commun
ication equipment. |
| Key words: mobile communication equipment microstrip patch
antenna U shaped slot short wall loading |
