毫米波介质谐振器有源天线研究

The project deals with investigation of active antennas operating on millimeter wave band, and with numerical analysis methods for them. The antenna takes dielectric resonator as a radiator, and embedded with circuits such as low noise amplifier, filter, and directional coupler inside. As first consideration, both active and passive circuits above are put into the internal space of the dielectric resonator; an antenna block has been constituted, which consists of front-end circuits combination. Researches are focused on the antenna's enhancement problem of electric properties, as input impedance, voltage-standing wave-ratio, beam distribution, polarization, and gain. Then, some materials of integrated circuit packaging, such as ceramic, glass, and resin have been picked out to encapsulate circuits. These encapsulated shells are taken as the radiator of dielectric resonator antennas; and the joint design problem of circuit packaging form and dielectric antenna has to be studied. Therefore, we can design antenna when designing circuit package. Thirdly, research is focused on that a part of nonmetallic box of the electronic equipment is taken as a radiator of dielectric antenna used in the mobile internet. These equipments consist of wireless router, automotive and airborne electronic system, and handy electronic measuring instrument with function of data sending/receiving. When the box of mobile terminal equipment is designed, the antenna has been designed in the same time. With antenna on the box, these wireless application systems are made smaller, and function more flexible. Finally, for the antenna analysis method, the time-domain techniques must be developed, and become more strict, and efficient. Use of the proposed algorithm, active antenna module with integrated circuit can be analyzed much more efficiently.

项目研究以介质谐振器为辐射体、内部嵌入低噪声放大器、滤波器和定向耦合器等电路、工作于毫米波波段的有源天线及其数值分析方法。在介质谐振器内部空间，放置上述有源和无源电路，构成一个包含前端电路组合的天线模块，研究输入阻抗、电压驻波比、极化、增益和辐射方向图等天线的电性能问题；选择陶瓷、玻璃和树脂等集成电路封装材料，以电路的封装外壳部分当作介质谐振器天线的辐射体，研究电路的封装形式与介质天线的联合设计问题，在设计电路封装的同时设计天线；还研究把移动互联网所需的电子设备非金属外壳的一部分作为介质天线的辐射体，包含无线路由器、车载和机载电子系统、以及具有数据收发功能的手持电子测量仪器等设备，在设计这些移动终端设备的外壳时设计天线，使得这些无线应用系统的体积更小、功能更加灵活。在天线分析方法方面，发展和建立一种较为严格而高效的时域计算方法，应用提出的算法对上述包含集成电路的有源天线模块进行有效分析。

项目按照预定方案，研究以空腔介质谐振器为电磁辐射体的毫米波波段有源天线，能够在空腔介质谐振器内部嵌入低噪声放大器、滤波器和定向耦合器等电路，形成了此类有源天线设计的理论方法，进行了有源天线性能的统计分析。. 通过实验手段，在介质谐振器内部空间放置无源和有源电路，构成包含前端电路组合的天线模块，分析模块的输入阻抗、电压驻波比、极化、增益和辐射方向图等天线的性能参数；选择陶瓷、玻璃或树脂等封装材料，制作电路封装外壳从而形成介质谐振器天线的辐射体，研究电路封装形式与介质天线的一体化联合设计；将移动互联网中部分电子设备非金属外壳作为介质天线的辐射体，针对无线路由器、车载和机载电子系统、以及具有数据收发功能的手持电子测量仪器等设备，研究移动终端设备的外壳设计与介质天线的一体化联合设计，从而减小了无线应用系统体积，增强了系统性能。. 建立发展了较为严格高效的天线分析计算方法，研究了隐式的伪谱时域方法(ADI-PSTD)，采用笛卡尔坐标系下球面截断边界，节省了近50%的计算空间，极大地提高了计算效率；应用提出的算法对上述包含集成电路的有源天线模块进行有效分析，达到了预定的研究目标，计算成效与研究方法达到国内外同类研究的领先水平。