发明名称 |
Low-noise differential bias circuit and differential signal processing apparatus |
摘要 |
A low-noise differential bias circuit is provided which obtains excellent noise characteristics while ensuring excellent distortion characteristics. A collector of a transistor (Q11) is connected to a voltage supply point (Vcc) via a resistor R15. Abase of the transistor (Q11) is connected to a base of a transistor (Q1) via resistors (R13, R11) connected in series. A connection point between the resistors (R11, R13) is connected to the collector of the transistor (Q11). A collector of a transistor (Q12) is connected to the voltage supply point at connection point A via a resistor (R16). A base of the transistor (Q12) is connected to a base of a transistor (Q2) via resistors (R14, R12) connected in series. A connection point between the resistors (R12, R14) is connected to the collector of the transistor (Q12). By this configuration, a high frequency ground is performed at the connection point A. <IMAGE> |
申请公布号 |
EP1557949(A1) |
申请公布日期 |
2005.07.27 |
申请号 |
EP20050001123 |
申请日期 |
2005.01.20 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
NAKATANI, TOSHIFUMI;OSAKO, SHINICHI;ITOH, JYUNJI |
分类号 |
H03F1/32;H03F3/45;H03K3/013;H03K3/282;H03K17/14 |
主分类号 |
H03F1/32 |
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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