{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9847578","patent":{"patent_number":"US-9847578","title":"Antenna device and communication terminal apparatus","assignee":null,"inventors":[],"filing_date":"2016-02-03T00:00:00.000Z","publication_date":"2017-12-19T00:00:00.000Z","cpc_codes":["G06K","G06K"],"num_claims":10,"abstract":"An antenna device includes a feed coil connected to a feed circuit, and a coil antenna disposed near the feed coil. A ferrite sheet, in which a magnetic loss term in a usable frequency band is relatively large, is provided between the feed coil and the coil antenna. The feed coil and the coil antenna are magnetically coupled to each other via the ferrite sheet. With this configuration, signal transmission efficiency between the feed coil and the coil antenna is enhanced."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Antenna device and communication terminal apparatus","description":"An antenna device includes a feed coil connected to a feed circuit, and a coil antenna disposed near the feed coil. A ferrite sheet, in which a magnetic loss term in a usable frequency band is relativ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9847578","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-9847578","citation_suggestion":"Patentable. \"Antenna device and communication terminal apparatus\" (US-9847578). https://patentable.app/patents/US-9847578","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9847578","json":"https://patentable.app/api/llm-context/US-9847578","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T07:17:29.878Z"}