发明名称 |
Receiver with a tunable parallel resonant circuit |
摘要 |
In a receiver, a tunable parallel resonant circuit (PRC2) is coupled to an input (IN) of a transistor circuit (MOIC) via a coupling network (CNW). The coupling network (CNW) lacks a varicap diode but includes a coupling resistor (Rc) in series with a coupling capacitor (Cc). The coupling capacitor has a coupling capacitance which is within an order of magnitude of an input capacitance at the input of the transistor circuit and the impedances of the coupling capacitor and the coupling resistor are substantially equal at a lower end of a frequency range throughout which the tunable parallel resonant circuit is tunable
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申请公布号 |
US6011965(A) |
申请公布日期 |
2000.01.04 |
申请号 |
US19970999318 |
申请日期 |
1997.12.29 |
申请人 |
U.S. PHILIPS CORPORATION |
发明人 |
LIM, KUI Y.;LEE, SOK Y.;LAU, HWEE H. |
分类号 |
H04B1/18;H03J3/18;(IPC1-7):H04B1/16 |
主分类号 |
H04B1/18 |
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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