发明名称 |
HIGH FREQUENCY CIRCUIT, SEMICONDUCTOR DEVICE, AND HIGH FREQUENCY POWER AMPLIFICATION DEVICE |
摘要 |
A small, high performance, multifunctional high frequency circuit that is multiband and multimode compatible reduces loss from a switch formed on the output side of a final stage amplification unit. The final stage amplification unit power amplifies an input signal and outputs an amplified signal. A first matching circuit impedance converts the amplified signal input thereto at a first input impedance, and outputs a first impedance-converted signal at a first output impedance. A control unit that generates a control signal denoting signal path selection information. A switch unit selects one of at least two signal paths based on the control signal, passes the first impedance-converted signal at an on impedance through the selected path, and outputs the pass signal. A second matching circuit impedance converts a pass signal input thereto at a second input impedance, and outputs a second impedance-converted signal at a second output.
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申请公布号 |
US2008284539(A1) |
申请公布日期 |
2008.11.20 |
申请号 |
US20080118803 |
申请日期 |
2008.05.12 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
TATEOKA KAZUKI;INAMORI MASAHIKO;MATSUDA SHINGO;OHASHI KAZUHIKO;KOIZUMI HARUHIKO |
分类号 |
H03H7/38 |
主分类号 |
H03H7/38 |
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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