发明名称 |
Combined multiplexer and switched gain circuit |
摘要 |
A combined multiplexer and switched gain circuit (250) that selectively multiplexes differential analog signals from a primary channel (20) and a diversity channel (22) in a diversity receiver system (10) to a single output. The circuit (250) is based on a current mode logic design where a plurality of separate conduction paths (278-284) are provided between a voltage line (266) and a current source (268). An output line (264) of the circuit (250) is coupled to each conduction path (278-284) so that the differential analog signals from the primary channel (20) and the diversity channel (22) can be selectively outputted to the circuit (250). Each conduction path (278-284) includes a gain device, such as degenerative resistor, that provides signal gain or no signal gain for that conduction path (278-284). Control signals are selectively applied to switching devices (310-324) and each conduction path (278-284) so that the conduction path (278-284) can be independently selected to provide the multiplexing.
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申请公布号 |
US6674327(B2) |
申请公布日期 |
2004.01.06 |
申请号 |
US20020114559 |
申请日期 |
2002.04.02 |
申请人 |
NORTHROP GRUMMAN CORPORATION |
发明人 |
HARBERTS HARRY S. |
分类号 |
H03K17/00;H03G3/10;H03G3/20;H03G3/30;H03K17/62;H03M1/12;H03M1/18;H04B7/08;(IPC1-7):H03F3/45 |
主分类号 |
H03K17/00 |
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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