{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9628097","patent":{"patent_number":"US-9628097","title":"Methods and devices for handling channel mismatches of an I/Q down-converted signal and a two-channel TI-ADC","assignee":null,"inventors":[],"filing_date":"2012-12-18T00:00:00.000Z","publication_date":"2017-04-18T00:00:00.000Z","cpc_codes":["H04L","H04L","H04L"],"num_claims":26,"abstract":"A method and device for handling an in-phase and quadrature (“I/Q”) channel mismatch of an I/Q down-converted signal, and a use of the device. A discrete-time complex valued signal r(n) based on an analog-to-digital conversion of the I/Q down-converted signal is obtained. The obtained discrete-time complex valued signal r(n) is oversampled by a factor of two or more. An intermediate signal v(n) is formed from the discrete-time complex valued signal r(n). The intermediate signal v(n) corresponds to the real part of a π/2 frequency shifted version of the obtained discrete-time complex valued signal r(n). A procedure for obtaining an estimate of a frequency dependent mismatch of a two-channel time-interleaved analog-to-digital converter (“TI-ADC”) is applied on the formed intermediate signal v(n). Thereby a TI-ADC mismatch estimate is obtained. The I/Q channel mismatch is estimated and/or compensated based on the obtained TI-ADC mismatch estimate."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Methods and devices for handling channel mismatches of an I/Q down-converted signal and a two-channel TI-ADC","description":"A method and device for handling an in-phase and quadrature (“I/Q”) channel mismatch of an I/Q down-converted signal, and a use of the device. A discrete-time complex valued signal r(n) based on an an","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9628097","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-9628097","citation_suggestion":"Patentable. \"Methods and devices for handling channel mismatches of an I/Q down-converted signal and a two-channel TI-ADC\" (US-9628097). https://patentable.app/patents/US-9628097","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9628097","json":"https://patentable.app/api/llm-context/US-9628097","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T07:58:53.859Z"}