{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9716557","patent":{"patent_number":"US-9716557","title":"Calibration device","assignee":null,"inventors":[],"filing_date":"2014-05-12T00:00:00.000Z","publication_date":"2017-07-25T00:00:00.000Z","cpc_codes":["H04B","H04B","H04B","H04B"],"num_claims":7,"abstract":"A calibration device includes reference signal normalizing units 5-1 to 5-M that set, as a reference signal, a frequency domain signal being associated with either one 2 of reception antennas and being included in frequency domain signals obtained by conversions made by Fourier transform units 4-1 to 4-M, and divide the frequency domain signals after the conversion made by the Fourier transform units 4-1 to 4-M by the reference signal, thereby normalizing the frequency domain signals, and reference frequency normalizing units 6-1 to 6-M that normalize the frequency domain signals normalized by the reference signal normalizing units 5-1 to 5-M by using a signal having a reference frequency included in the frequency domain signals."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Calibration device","description":"A calibration device includes reference signal normalizing units 5-1 to 5-M that set, as a reference signal, a frequency domain signal being associated with either one 2 of reception antennas and bein","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9716557","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-9716557","citation_suggestion":"Patentable. \"Calibration device\" (US-9716557). https://patentable.app/patents/US-9716557","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9716557","json":"https://patentable.app/api/llm-context/US-9716557","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T09:53:14.059Z"}