摘要
宽带喇叭天线在测量,雷达及通信系统上的应用已愈来愈广泛。利用电磁仿真软件HFSS,给出了一种宽带双脊喇叭天线的仿真模型及其各部分结构的具体设计方法,并结合实际的工程需要,设计了一幅频率范围为1GHz～18GHz的宽带双脊喇叭天线,通过对其电性能参数进行仿真及测量。结果显示:驻波比在1.6GHz～18GHz的范围内小于2.5,在整个频段上,增益大于10dB,三维方向图在15GHz时主瓣才开始出现分裂,并且随着频率的升高,直到18GHz主瓣也没有出现大的凹陷。设计的天线能够满足更高的工程要求。
Broadband horn antenna has been widely used in the measurement, radar and communication system. Based on the known electromagnetic simulation software HFSS, a model of broadband double-ridged horn antenna and design method of the whole system are presented. Besides, a 1-18GHz double-ridged horn antenna is designed and simulated with HFSS, according to practical engineering demand. The results show that VSWR is lower than 2. 5 when the frequency is between 1.6GHz and 18GHz, and the gain is greater than 10dB in whole range. Though the radiation pattern begins to split at 15GHz, the main lobe has not been strongly indented when the frequency is up to 18GHz. This denotes that the designed antenna can fulfill higher demands.
出处
《电子测量技术》
2007年第7期142-145,共4页
Electronic Measurement Technology
关键词
双脊喇叭
宽带天线
驻波比
方向图
double-ridged horn
broadband antenna
VSWR
radiation pattern
