一种新型小型化微带天线的分析与设计

Analysis and Design of A Novel Miniaturized Microstrip Antenna

针对传统微带天线低频端尺寸较大的缺点,设计了一种新型微带天线结构,即通过采用在传统微带天线贴片下方挖出凹槽,将辐射板放入凹槽中的办法,设计了一副小型化微带天线。与普通微带天线相比,新型天线谐振频率降低了870MHz,阻抗带宽从原来的170MHz增至560MHz,且天线在整个工作频段内具有良好辐射特性,从而验证了该设计方案的正确性。

Conventional microstrip antennas often hold a big size. To overcome this problem,a novel microstrip antenna is designed,in which a groove is dug below the radiation plate,and the radiation plate is placed in this groove. The simulation results show that the resonant frequency of novel microstrip antenna is reduced by 870 MHz,and its impedance bandwidth is increased from 170 MHz to 560 MHz. This antenna holds good radiation performances in its operation frequencies,thus proving the validity of the proposed scheme.