毫米波矢量调制器及其在有源相控阵天线中的应用

矢量调制器芯片作为一种可以同时对载波进行相位和幅度调制的新型电路,能够替代传统的数字移相器和数字衰减器用在有源相控阵系统中.先设计了一款工作在Ka波段毫米波单片矢量调制器,在片测试结果显示可以实现- 12～-40 dB的幅度调制与360°的相位调制.然后设计了一个Ka波段1×8阵有源相控阵天线,改变矢量调制器的控制电压...     

Research on Mobile Communications in Microwave and Millimeter-Wave Frequency Ranges at CRL

Research activities at the Communications Research Laboratory (CRL), IAI,Japan, into new-generation mobile communications are described. Theseactivities are categorized into three areas: (1) cellular transmission in themicrowave frequency region, (2) street-cell and hotspot transmission in themillimeter-wave frequency region, and (3) software defined radio (SDR) basedmobile terminals. Prototypes have been developed and field-tested in eacharea. The prototypes and the field trial results are described, and aperspective on new-generation mobile communications is presented. This revised version was published online in August 2006 with corrections to the Cover Date.