Investigation of the scanning performance and enhancement of an electrically large array

[摘要] An existing antenna used in satellite communications is investigated with thegoal of improving low angle radiation performance and reducing manufacturingcosts. To understand this antenna it is modelled, simulated and verifiedagainst existing measurements. This verified model is the basis for furtherinvestigation. The antenna is separated into two parts with are individuallyexamined and enhancements are proposed for each. Simulations of the resultingfinal models show that little by way of improvement in the performance canbe obtained but bring several key issues to light. The scanning impedance isof particular importance in such an investigation and a method of determiningthis impedance is recommended.

[发布机构] Stellenbosch University