Low pass filters for high dynamic range wideband direct conversion receiver

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United States of America Patent

PATENT NO 6862323
SERIAL NO

09924819

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Disclosed are a low pass filter, and a direct conversion receiver (DCR) implementing the same, which filter and second signal channels with improved phase and gain match, allowing use of the filter and DCR in wideband environments. A first M-pole filter channel, comprised of a first plurality of 2-pole active filter stages, filters the first signal channel. A second M-pole filter channel, comprised of a second plurality of 2-pole active filter stages, filters the second signal channel. One of the second plurality of 2-pole filter stages includes two variable components. The values of the variable components of the second M-pole filter channel are adjusted to match the gain and phase of the first and second filter channels.

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Patent Owner(s)

Patent OwnerAddress
ROCKWELL COLLINS INC400 COLLINS ROAD NE CEDAR RAPIDS IA 52498

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Loper, Roger K Montrose, CO 10 652

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