发明名称 |
RECONFIGURABLE BASEBAND FILTER |
摘要 |
A reconfigurable baseband filter for use in a multimode communication system is disclosed. One or more filter elements can each be configured as a plurality of sub-elements. The value of each of the filter elements can be varied by switching between at least two of the plurality of sub-elements. Switching noise within a desired passband can be reduced by switching at a rate that is greater than the desired passband. The switching noise in the passband can be further reduced by pseudo-randomly switching between the sub-elements. The filter can use a delta-sigma modulator to generate a pseudo-random switching signal. |
申请公布号 |
EP1620945(A2) |
申请公布日期 |
2006.02.01 |
申请号 |
EP20040750423 |
申请日期 |
2004.04.20 |
申请人 |
QUORUM SYSTEMS, INC. |
发明人 |
MARTIN, BRIAN, C.;MALONE, LAWRENCE, J. |
分类号 |
H03H19/00 |
主分类号 |
H03H19/00 |
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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