{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11965919","patent":{"patent_number":"US-11965919","title":"Phase frequency detector-based high-precision feedback frequency measurement apparatus and method","assignee":null,"inventors":[],"filing_date":"2022-08-02T00:00:00.000Z","publication_date":"2024-04-23T00:00:00.000Z","cpc_codes":["G06F"],"num_claims":5,"abstract":"A phase frequency detector-based high-precision feedback frequency measurement apparatus and method: a Field Programmable Gate Array (FGPA) roughly measures a frequency fx of a measured time-frequency pulse by an equal-precision frequency measurement method; a Direct Digital Synthesizer (DDS) automatically synthesizes a frequency fx′ according to the fx roughly measured by the FPGA; the fx and the fx′ are sent to a phase frequency detector for performing phase frequency detection and then sent to the FPGA after passing through a charge pump, a low-pass filter circuit, and an (Analogue-to-Digital) A/D converter; the FPGA processes a frequency difference obtained by the phase frequency detector and then transmits the processed frequency difference to the DDS to form a negative feedback frequency measurement system so that the DDS continuously adjusts the fx′ according to a frequency difference measurement result until the output of the DDS is stable. Therefore, precise measurement of the time-frequency pulse to be measured is realized."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Phase frequency detector-based high-precision feedback frequency measurement apparatus and method","description":"A phase frequency detector-based high-precision feedback frequency measurement apparatus and method: a Field Programmable Gate Array (FGPA) roughly measures a frequency fx of a measured time-frequency","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11965919","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-11965919","citation_suggestion":"Patentable. \"Phase frequency detector-based high-precision feedback frequency measurement apparatus and method\" (US-11965919). https://patentable.app/patents/US-11965919","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11965919","json":"https://patentable.app/api/llm-context/US-11965919","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T14:30:47.383Z"}