Title: Adding-up apparatus and digital circuit unit of its direct digit frequency synthesizing apparatus
Application Number: 200510088700 Application Date: 2005.08.01
Publication Number: 1852023 Publication Date: 2006.10.25
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H03B28/00
Applicant(s) Name: Huawei Technology Co., Ltd. Address: 518129
Inventor(s) Name: Li Bo, Zhaomeng, Luo Kun
Attorney & Agent: song zhiqiang wang qi
Abstract:
     This invention discloses an accumulation device including an increment multiple unit, which receives incremental data input from outside to generate the multiple incremental values of K of 1-K times increments, an accumulator receiving k-times of incremental values output by the increment multiple unit to generate an accumulated value to be output to an addition unit and taken as one circuit of phase data to be output, an addition unit receiving the accumulated value output by the accumulator and 1-k-1 times of increment value output by the increment multiple unit to add the accumulated result and the 1-k-1 times of value to generate the sum of k-1 to be taken as the k-1 phase data to be output, in which, k is a natural number greater than 1. This invention also discloses a digital circuit unit for a direct digital frequency composition device utilizing said accumulating device for phase accumulation.
Time: 9
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