专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20170194984A1 VCO-BASED CONTINUOUS-TIME SIGMA DELTA MODULATOR EQUIPPED WITH TRUNCATION CIRCUIT AND PHASE-DOMAIN EXCESS LOOP DELAY COMPENSATION 审中-公开
公开(公告)号：US20170194984A1
公开(公告)日：2017-07-06
申请号：US15461502
申请日：2017-03-17
申请人： MEDIATEK INC.
发明人： Sheng-Jui Huang , Michael A. Ashburn, JR. , Divya Kesharwani , Nathan Egan
IPC分类号： H03M3/00
CPC分类号： H03M3/37 , H03M1/86 , H03M3/422 , H03M3/424 , H03M3/428 , H03M3/464
摘要： A continuous-time sigma-delta modulator includes a VCO-based quantizer, a rotator, a truncation circuit and a digital-to-analog converter (DAC). The VCO-based quantizer is arranged to generate a thermometer code based on an input signal and a feedback signal. The rotator is coupled to the VCO-based quantizer, and is arranged to generate a phase-shifted thermometer code based on the thermometer code and a phase shift, and generate a rearranged thermometer code based on the phase-shifted thermometer code to comply with a specific pattern. The truncation circuit is coupled to the rotator, and is arranged to extract a most significant bit (MSB) part from the rearranged thermometer code. The DAC is coupled to the truncation circuit, and is arranged to generate the feedback signal according to at least the MSB part. Two alternative continuous-time sigma-delta modulators are also disclosed.

2. 发明申请

US20160365870A1 VCO-BASED CONTINUOUS-TIME SIGMA DELTA MODULATOR EQUIPPED WITH TRUNCATION CIRCUIT AND PHASE-DOMAIN EXCESS LOOP DELAY COMPENSATION 有权
标题翻译：基于VCO的连续时间SIGMA DELTA调制器配有TRUNCATION CIRCUIT和相域超越循环延迟补偿
公开(公告)号：US20160365870A1
公开(公告)日：2016-12-15
申请号：US15069951
申请日：2016-03-14
申请人： MEDIATEK INC.
发明人： Sheng-Jui Huang , Michael A. Ashburn, JR. , Divya Kesharwani , Nathan Egan
IPC分类号： H03M3/00
CPC分类号： H03M3/37 , H03M1/86 , H03M3/422 , H03M3/424 , H03M3/428 , H03M3/464
摘要： A continuous-time sigma-delta modulator includes a VCO-based quantizer, a rotator, a truncation circuit and a digital-to-analog converter (DAC). The VCO-based quantizer is arranged to generate a thermometer code based on an input signal and a feedback signal. The rotator is coupled to the VCO-based quantizer, and is arranged to generate a phase-shifted thermometer code based on the thermometer code and a phase shift, and generate a rearranged thermometer code based on the phase-shifted thermometer code to comply with a specific pattern. The truncation circuit is coupled to the rotator, and is arranged to extract a most significant bit (MSB) part from the rearranged thermometer code. The DAC is coupled to the truncation circuit, and is arranged to generate the feedback signal according to at least the MSB part. Two alternative continuous-time sigma-delta modulators are also disclosed.
摘要翻译：连续时间Σ-Δ调制器包括基于VCO的量化器，旋转器，截断电路和数模转换器（DAC）。基于VCO的量化器被布置成基于输入信号和反馈信号生成温度计代码。旋转器耦合到基于VCO的量化器，并且被布置成基于温度计代码和相移生成相移温度计代码，并且基于相移温度计代码生成重新排列的温度计代码以符合具体模式。截断电路耦合到旋转器，并且被布置成从重新排列的温度计代码中提取最高有效位（MSB）部分。 DAC耦合到截断电路，并且被布置成根据至少MSB部分产生反馈信号。还公开了两种替代的连续时间Σ-Δ调制器。

3. 发明授权

US09634687B2 VCO-based continuous-time sigma delta modulator equipped with truncation circuit and phase-domain excess loop delay compensation 有权
公开(公告)号：US09634687B2
公开(公告)日：2017-04-25
申请号：US15069951
申请日：2016-03-14
申请人： MEDIATEK INC.
发明人： Sheng-Jui Huang , Michael A. Ashburn, Jr. , Divya Kesharwani , Nathan Egan
IPC分类号： H03M3/00
CPC分类号： H03M3/37 , H03M1/86 , H03M3/422 , H03M3/424 , H03M3/428 , H03M3/464
摘要： A continuous-time sigma-delta modulator includes a VCO-based quantizer, a rotator, a truncation circuit and a digital-to-analog converter (DAC). The VCO-based quantizer is arranged to generate a thermometer code based on an input signal and a feedback signal. The rotator is coupled to the VCO-based quantizer, and is arranged to generate a phase-shifted thermometer code based on the thermometer code and a phase shift, and generate a rearranged thermometer code based on the phase-shifted thermometer code to comply with a specific pattern. The truncation circuit is coupled to the rotator, and is arranged to extract a most significant bit (MSB) part from the rearranged thermometer code. The DAC is coupled to the truncation circuit, and is arranged to generate the feedback signal according to at least the MSB part. Two alternative continuous-time sigma-delta modulators are also disclosed.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式