发明名称 |
ANALOG ADAPTIVE FIR FILTER HAVING INDEPENDENT COEFFICIENT SETS FOR EACH FILTER TAP |
摘要 |
A finite impulse response filter having tap weight rotation is provided, where each tap has a corresponding coefficient selector. Each coefficient selector includes N coefficients, where N is the number of taps. Each coefficient selector provides one of its corresponding coefficients as an input to a multiplier. Each multiplier also receives an input from a triggered track and hold tap. The tap coefficients are selected according to the time delay since the corresponding track and hold tap was most recently triggered. In this manner, the tendency of multiplier gain nonuniformity to degrade filter operation in the presence of tap weight rotation is reduced. In another embodiment, an offset selector is provided, to reduce the tendency of component offsets to degrade filter operation in the presence of tap weight rotation. |
申请公布号 |
WO2005033902(A3) |
申请公布日期 |
2007.03.29 |
申请号 |
WO2004US32558 |
申请日期 |
2004.10.01 |
申请人 |
KEYEYE |
发明人 |
TAKATORI, HIROSHI;LITTLE, JAMES;HARA, SUSUMU |
分类号 |
G06G7/02;G06F;H03H15/02;H03K5/159 |
主分类号 |
G06G7/02 |
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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