发明名称 |
Integrated frequency selectable resonant coupling network and method thereof |
摘要 |
An integrated center frequency selectable resonant coupling network suited for use in an integrated circuit is disclosed. The network includes an integrated coupling transformer having a secondary winding for coupling to a load and a primary winding for coupling to a source; a first integrated capacitive circuit controllably coupled across one of the primary and secondary windings and when so coupled operable to resonate with the integrated coupling transformer at a frequency in a first frequency band; and a second integrated capacitive circuit coupled across a second one of the primary and the secondary windings that is operable to resonate with the integrated coupling transformer at a frequency in a second frequency band. The method is in an IC and includes providing and coupling an input signal within alternatively a first frequency band and a second frequency band to a primary winding of an integrated coupling transformer; controlling an integrated switched capacitor network, coupled to the transformer, to provide a coupling network that is alternatively and respectively resonant at a first and second frequency within the first and second frequency band thus selectively providing an output signal at a secondary winding of the transformer; and down converting the output signal.
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申请公布号 |
US6889036(B2) |
申请公布日期 |
2005.05.03 |
申请号 |
US20020092932 |
申请日期 |
2002.03.07 |
申请人 |
FREESCALE SEMICONDUCTOR, INC. |
发明人 |
BALLWEBER BRIAN M.;DOW STEPHEN W. |
分类号 |
H03F1/56;H03H11/12;H04B1/40;(IPC1-7):H04B1/18;H03J3/20 |
主分类号 |
H03F1/56 |
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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