发明名称 |
TRANSMITTER-RECEIVER CIRCUIT FOR RADIO COMMUNICATION AND SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE |
摘要 |
<p>A transmitter-receiver circuit for radio communication, comprising a low-noise receiver amplifier (20); a first matching circuit (40) which converts the input impedance of the amplifier (20); a transmitter amplifier (10) including a second matching circuit (50) and a third matching circuit (60) which convert the impedances to transmitting signals; and a mode switch (30) for changing from transmitting to receiving and vice versa. The transmitter amplifier (10) has a control terminal (14) connected to the gate electrode of a high-power FET (12), and the output terminal (15A) of the amplifier (10) is connected to a antenna (80) not through the switch (30). <IMAGE></p> |
申请公布号 |
EP0878918(A1) |
申请公布日期 |
1998.11.18 |
申请号 |
EP19960941894 |
申请日期 |
1996.12.17 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
ITOH, JUNJI |
分类号 |
H04B1/48;(IPC1-7):H04B1/44 |
主分类号 |
H04B1/48 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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