摘要
对一种新型的双频双圆极化微带贴片天线进行了研究,该天线可发射L波段的左旋圆极化信号,接收S波段的右旋圆极化信号。天线采用双馈点馈电的层叠结构,利用宽带功分移相器设计馈电网络,为双馈点提供双圆极化所需的激励电流。贴片和馈电网络上附加短截线,通过调整短截线的长度,即可微调谐振频率,使得天线的调试十分方便,又提高了天线的收发隔离度。该天线结构简单,调试方便,为便携式卫星通信机提供了一种实用的小型化收发天线。
A novel dual-band dual-polarization stacked microstrip patch antenna is analyzed and designed. It transmits left-hand circularly polarized （LHCP） signals on L band and receives right-hand circularly polarized （RHCP） signals on S band. The antenna has been realized by two stacked square patches with tuning stubs, which are fed by two quadrature pins placed symmetrically on the two main axis. The amplitude and phase relationship between the two pins to maintain circular polarization is obtained by wide band 90~ hybrid coupler. Changing the length of stubs of patches and feeding networks can adjust the resonance frequency and improve the isolation between transmission port and receiving port. The antenna＇s structure is simple and adjusunent is easy. It is practical to be used as a miniature antenna for portable Satellite Communication receiver.
出处
《微波学报》
CSCD
北大核心
2006年第B06期25-28,共4页
Journal of Microwaves
关键词
微带贴片天线
双圆极化
双频
馈电网络
隔离度
Microstrip patch antenna； Dual circular polarization； Dual-band； Feeding network； Isolation
