Antenna design using computational electromagnetics

尽管近年来通信行业存在不确定性，但毫无疑问，技术将继续发展，以提供需要更高数据速率和允许用户移动性的各种服务。移动性意味着天线将继续成为关键部件。服务分集将意味着单个天线结构可能必须为多个角色中的每个角色提供略微不同的特性。这意味着多种极化和波束，以及具有嵌入式智能的电子可控波束特性。数据速率的提高要求天线具有更宽的工作频带，因此频谱被分配在毫米波频率上。为了确保未来系统的成功，必须在天线配置和设计方法方面取得重大进展。天线必须满足更苛刻的要求，但成本适合商业应用。申请人考虑到上述更严格的要求，正在研究地面和卫星应用的天线配置，以及计算机辅助设计的方法。

In spite of uncertainties in the communications industry in recent years, no doubt there will be continued technology development to provide diverse services that require higher data rates and allow user mobility. Mobility means that antennas will continue to be key components. Service diversity will mean that a single antenna structure might have to provide slightly different characteristics for each of a number of roles. This implies multiple polarisations and beamports, as well as electronically controllable beam characteristics with embedded intelligence. Increased data rates demand antennas with wider operating frequency bands, and so spectrum has been allocated at millimetrewave frequencies. There will have to be significant advances in antenna configurations and methods for their design to ensure the success of future systems. The antennas must satisfy more demanding requirements, yet at a cost suitable for commercial applications. The applicant is investigating antenna configurations for both terrestrial and satellite applications, and methods for their computer-aided design, with the above-mentioned tougher requirements in mind.