{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9645234","patent":{"patent_number":"US-9645234","title":"RFID device, methods and applications","assignee":null,"inventors":[],"filing_date":"2013-07-12T00:00:00.000Z","publication_date":"2017-05-09T00:00:00.000Z","cpc_codes":["G01S","G01S","G01S","G06K","G01S"],"num_claims":28,"abstract":"Systems and methods for ranging in indoor environment that are accurate and that are substantially undisturbed by multipath interference. The method includes illuminating a sensor tag with electromagnetic radiation generated from a transceiver; the transceiver are being located a distance away from the sensor tag; the sensor tag comprising at least one nonlinear transmission line (NLTL) for broadband harmonic generation, receiving backscattered electromagnetic radiation from the at least one NLTL at three or more locations; coordinates of the three or more locations being known, obtaining from the phase and magnitude outputs at a second harmonic and at least one sub harmonic of second harmonic, a distance from the sensor tag to each of the three or more locations and trilaterating a location of the sensor tag."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"RFID device, methods and applications","description":"Systems and methods for ranging in indoor environment that are accurate and that are substantially undisturbed by multipath interference. The method includes illuminating a sensor tag with electromagn","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9645234","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-9645234","citation_suggestion":"Patentable. \"RFID device, methods and applications\" (US-9645234). https://patentable.app/patents/US-9645234","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9645234","json":"https://patentable.app/api/llm-context/US-9645234","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T09:22:03.267Z"}