用单平面技术设计5.8GHz的双相调制器/混频器

5.8GHz BIPHASE MODULATOR/MIXER DESIGNED BY UNIPLANAR TECHNOLOGY

根据单平面技术将多功能子系统分为基本块和简单电路模型的设计方法 ,用于设计单平面的双相调制器 /混频器 .主要用于智能交通收费系统的微波非接触式ID卡中 ,其工作频率为 5 8GHz.采用电磁场计算与传统传输线及计算机辅助设计相结合的方法分析设计了该子系统的主要部件 ,使其具有尺寸小、集成度高、结构紧凑、性能好、成本低。

By considering the high flexibility of uniplanar technology to design complex multifunction subsystems, a design procedure based on a subsystem repartitioned into elementary blocks and very simple electrical modeling was proposed and applied to a uniplanar biphase(0degrees or 180degrees)modulator/mixer, which was intended to be used as a building block in microwave uncontact impact card of Intelligent Transportation System(ITS) at 5.8GHz. Theoretical electromagnetic field calculation methods were combined with conventional transmission-line and computer-aided design calculations to analyze and design the critical parts of the subsystems. The subsystem designed in this paper has the advantages of small size, compact structure, high performance and low cost.