摘要
提出把双线背射螺旋作为短背射天线的馈源时，可得到一种性能优良的新天线．文中给出了螺距角α＝ １０°、１２°、１４°和１６°时双线背射螺旋作馈源的实验结果，同时得出α＝ １４°时天线综合性能最佳，最大增益可达１９．７ｄＢ．它具有结构简单、馈电方便、遮挡小、频带宽、增益高且易于产生圆极化波等优点，性能远优于带相同接地板的螺旋天线、普通短背射天线以及单线背射螺旋作馈源的短背射天线．
A backfire antenna ofgood characteristics is described in this paper. Ithas a new feed—bifilarbackfire helix. Itsfoursituationsofpitch anglesα= 10°,12°,14°and 16° are m easured. By com parison, the bestpitch angle is 14°. The antenna has a m axim um gain of 19.7dB. The new antenna has the advantages of sim ple structure, easy feeding and a wide frequency range, and circular polarized wave. The characteristics are m uch better than a bifilarbackfire helicalantenna, a shortbackfire antenna and a backfire an- tenna fed by a m onofilar backfire helix.
出处
《应用科学学报》
CAS
CSCD
1999年第4期473-475,共3页
Journal of Applied Sciences
基金
山西省青年学科带头人基金
关键词
天线
双线背射模螺旋
馈源
短背射天线
antenna, bifilarbackfirem ode helix, feed, shortbackfireantenna
