Dds circuit

阅读:788发布:2021-03-06

专利汇可以提供Dds circuit专利检索,专利查询,专利分析的服务。并且PURPOSE: To improve C/N of a DDS circuit by providing a CPU to operate a DDS (Direct Digital Synthesizer) circuit, a D/A converter and an electronic variable tuning circuit externally to the DDS circuit.
CONSTITUTION: A frequency setting data 21 is inputted to a DDS 1 from a CPU 2 and an output of the DDS 1 is fed to a load through an electronic variable tuning circuit 4. The 2nd frequency setting data 22 is inputted from the CPU 2 so that the tuning frequency of the variable tuning circuit 4 is changed in tracking with the output frequency of the DDS 1 and a D/A converter 3 converts the signal into a control voltage 31a or a control current 31b, which is fed to the electronic variable tuning circuit 4 thereby setting the tuning frequency electronically. Thus, the C/N of the output wave restricting the dynamic range is improved.
COPYRIGHT: (C)1990,JPO&Japio,下面是Dds circuit专利的具体信息内容。

高效检索全球专利

专利汇是专利免费检索,专利查询,专利分析-国家发明专利查询检索分析平台,是提供专利分析,专利查询,专利检索等数据服务功能的知识产权数据服务商。

我们的产品包含105个国家的1.26亿组数据,免费查、免费专利分析。

申请试用

分析报告

专利汇分析报告产品可以对行业情报数据进行梳理分析,涉及维度包括行业专利基本状况分析、地域分析、技术分析、发明人分析、申请人分析、专利权人分析、失效分析、核心专利分析、法律分析、研发重点分析、企业专利处境分析、技术处境分析、专利寿命分析、企业定位分析、引证分析等超过60个分析角度,系统通过AI智能系统对图表进行解读,只需1分钟,一键生成行业专利分析报告。

申请试用

QQ群二维码
意见反馈