发明公开
EP0390360A2 A method for changing the operating class of a transmitter
失效
Vorrichtung zurÄnderungder Betriebsklasse eines发件人。
- 专利标题： A method for changing the operating class of a transmitter
- 专利标题（中）： Vorrichtung zurÄnderungder Betriebsklasse eines发件人。
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申请号： EP90302627.6申请日： 1990-03-13
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公开(公告)号： EP0390360A2公开(公告)日： 1990-10-03
- 发明人: Vaisanen, Risto , Pekkarinen, Vesa , Sarasmo, Jukka
- 申请人： NOKIA MOBILE PHONES LTD.
- 申请人地址： P.O. Box 86 SF-24101 Salo FI
- 专利权人： NOKIA MOBILE PHONES LTD.
- 当前专利权人： NOKIA MOBILE PHONES LTD.
- 当前专利权人地址： P.O. Box 86 SF-24101 Salo FI
- 代理机构： Gilding, Martin John
- 优先权： FI891514 19890329
- 主分类号： H03F1/32
- IPC分类号： H03F1/32 ; H03F3/24 ; H03F1/02 ; H03G3/20
摘要：
The invention relates to a method for changing the operating class of a radio telephone transmitter used especially in a gsm radio telephone system. When the transmitter comprises one or several power stages of class A, B, AB or C, it is possible according to the invention to change the operating point of one or several power stage transistors (T) by means of a controlled semiconductor switch (S), whereby the class of the power stage amplifier changes to that desired.
公开/授权文献
- EP0390360B1 A method for changing the operating class of a transmitter 公开/授权日：1995-09-20
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