发明授权
US5230093A Transmitter filter with integral directional coupler for cellular
telephones
失效
用于蜂窝电话的集成方向耦合器的发射器滤波器
- 专利标题： Transmitter filter with integral directional coupler for cellular telephones
- 专利标题（中）： 用于蜂窝电话的集成方向耦合器的发射器滤波器
-
申请号： US695500申请日： 1991-05-03
-
公开(公告)号： US5230093A公开(公告)日： 1993-07-20
- 发明人: Randall W. Rich , Dale G. Schwent , Rashid M. Osmani
- 申请人： Randall W. Rich , Dale G. Schwent , Rashid M. Osmani
- 专利权人： MOTOROLA Inc A Corp OF DELAWARE
- 当前专利权人： MOTOROLA Inc A Corp OF DELAWARE
- 主分类号： C07C29/09
- IPC分类号： C07C29/09 ; C07C29/86 ; C07C31/20 ; C07C31/22 ; C07C31/27 ; C07C45/50 ; C07C45/81 ; C07C45/85 ; C07C47/02 ; H01P1/205 ; H01P5/18 ; H03G3/20 ; H04B1/04 ; H04B1/38 ; H04B1/40 ; H04Q7/38
摘要：
A cellular telephone transmitter (100) includes a variable-gain power amplifier (102), the output of which is filtered and sampled by a filter (104) with an integral directional coupler. Filter (104) includes both a transmitter signal filter and a directional coupler on a ceramic block of one or more pieces. The directional coupler has been realized by two coupled transmission lines provided by the two holes (206 and 207) on the left side of the ceramic block, and the transmitter filter has been realized by five short-circuited coupled transmission lines provided by the five holes (201-205) on the right side of the ceramic block.
公开/授权文献
信息查询
