{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8502716","patent":{"patent_number":"US-8502716","title":"Calibration for RFDAC","assignee":null,"inventors":[],"filing_date":"2012-03-12T00:00:00.000Z","publication_date":"2013-08-06T00:00:00.000Z","cpc_codes":["H04L","H04L","H04B"],"num_claims":19,"abstract":"Phase errors are reduced in an RFDAC. The RFDAC includes: a multi-phase radio-frequency signal generator that generates multiple radio-frequency signal pairs each having a phase difference of π; a vector selector that combines each of the multiple radio-frequency signals which has passed through at least one path; a test signal generator that generates a test signal; a multiplexer that selects either the test signal or the baseband signal; a vector controller that controls the vector selector so as to select a path for each of the multiple radio-frequency signal pairs; a detector that detects output signals outputted from the vector selector; a calibrator that, based on the output signals, calculates a calibration coefficient of a phase error between the radio-frequency signals of each of the multiple radio-frequency signal pairs, and calibrates the multiple radio-frequency signals or the baseband signal."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Calibration for RFDAC","description":"Phase errors are reduced in an RFDAC. The RFDAC includes: a multi-phase radio-frequency signal generator that generates multiple radio-frequency signal pairs each having a phase difference of π; a vec","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8502716","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-8502716","citation_suggestion":"Patentable. \"Calibration for RFDAC\" (US-8502716). https://patentable.app/patents/US-8502716","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8502716","json":"https://patentable.app/api/llm-context/US-8502716","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T17:20:54.505Z"}