{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9647725","patent":{"patent_number":"US-9647725","title":"Wireless power interface using an NFC antenna","assignee":null,"inventors":[],"filing_date":"2014-04-02T00:00:00.000Z","publication_date":"2017-05-09T00:00:00.000Z","cpc_codes":["H04B","H02J","H02J","H02J","H04B"],"num_claims":10,"abstract":"A circuit comprises an antenna and a first port coupled to the antenna using a first reactive circuit. A first switching device is coupled across first and second input nodes of the first port, and configured to convey a signal across the first and second input nodes to a Near Field Communication (NFC) circuit in a first mode, and to isolate the NFC circuit from the antenna in a second mode. The antenna has a first resonance at a first frequency in a first mode and has a second resonance at a second frequency in a second mode. A second port is coupled to the antenna using a second reactive circuit. A rectifier has an input coupled to the second port and an output coupled to an energy storage device. A second switching device is coupled across the second port and configured to control an amount of current flowing through the rectifier by alternating between a first state and a second state at a third frequency when the circuit is in the second mode."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Wireless power interface using an NFC antenna","description":"A circuit comprises an antenna and a first port coupled to the antenna using a first reactive circuit. A first switching device is coupled across first and second input nodes of the first port, and co","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9647725","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-9647725","citation_suggestion":"Patentable. \"Wireless power interface using an NFC antenna\" (US-9647725). https://patentable.app/patents/US-9647725","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9647725","json":"https://patentable.app/api/llm-context/US-9647725","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T17:28:07.125Z"}