Patent ID: 8176107
Filing Date: 2012-05-08
Classification: H03H

Abstract:
1. A quad rate, multi-standard decimation device with decimation ratio selectable from 2, 3, 4, and 6; and selectable mode, comprising: a. A first input switch with one branch for decimate by 3, 4, or 6; and a second branch for decimate by 2; b. A first digital filter connected to said first input switch decimate by 3,4, or 6 branch; c. A second switch with input connected to said first digital filter output with one branch for decimate by 4 or 6, and a second branch for decimate by 3; d. A downsample by 2 connected to said second switch decimate by 4 or 6 branch; e. A first switching mechanism selecting output of said decimate by 2 or decimate by 3 branch of said second switch depending on which path has been selected; f. A second switching mechanism selecting output of said first switching mechanism or decimate by 2 branch of said first switch depending on which path has been selected; g. A third switch connected to the output of said second switching mechanism with one branch for decimate by 3 or 6, and a second branch for decimate by 2 or 4; h. A combined digital filter, decimate by 3 device connected to said third switch decimate by 3 or 6 output; i. A combined digital filter, decimate by 2 device connected to said third switch decimate by 2 or 4 output; j. A third switching mechanism selecting output of said combined digital filter, decimate by 3 device or output of said combined digital filter, decimate by 2 device depending on which path has been selected; k. A second digital filter connected to output of said third switching mechanism; l. Said second digital filter bandwidth dependent on selected said mode.