一种新型偏馈赋形抛物面天线设计

Design of a New Type of Offset Shaped Paraboloidal Reflector Antennas

一种新型偏馈赋形抛物面天线比普通偏馈抛物面天线的垂直面半功率束宽更宽,达16.5°。另外,提出的设计方法涉及了馈源喇叭的口径场的相位影响,但不需要计算出馈源喇叭的相位中心位置,还可用于其他任何偏焦量的偏馈或正馈抛物面天线的设计。

A new type of offset shaped paraboloidal reflector antennas and a new method for the design of this new type of antennas are presented in detail.By calculation and experiments it is found that one of half-power beamwidths of this new antenna equals 16.5° and it is wider than any offset paraboloidal reflector antenna.This new design method does not need to find out the phase center of the horn feed and includes the influence of the phase center of the horn feed.This new method can be used in the design of other types of both offset or non-offset and focus-fed or non-focus-fed paraboloidal reflector antennas.