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发明名称
可变衰减器
摘要
本发明揭露一种可变衰减器,包括至少一级衰减器电路。此可变衰减器之信号输入端和信号输出端之间连接有串联电阻,形成一信号主电路。信号主电路上的至少一点与可变衰减器之共同接地端之间连接有并联电阻,衰减器电路更包括:与串联电阻并联的并联开关;与并联电阻串联的串联开关。本发明实施例在可变衰减器的串联电阻两端并联接入并联开关,在并联电阻两端串联接入串联开关,在控制并联开关闭合以无效某级衰减量的同时,控制串联开关断开,以消除并联电阻对信号主电路的影响,使得衰减器的衰减量更稳定,精度更高,频率范围更宽。
申请公布号
TWI364132
申请公布日期
2012.05.11
申请号
TW097120317
申请日期
2008.05.30
申请人
阎跃军 中国;阎跃鹏 中国
发明人
阎跃军;阎跃鹏
分类号
H01P1/22
主分类号
H01P1/22
代理机构
代理人
李国光 新北市中和区中正路880号4楼之3;张仲谦 新北市中和区中正路880号4楼之3
主权项
地址
中国
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