{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8521090","patent":{"patent_number":"US-8521090","title":"Systems, methods, and apparatuses for reducing interference at the front-end of a communications receiving device","assignee":null,"inventors":[],"filing_date":"2010-03-25T00:00:00.000Z","publication_date":"2013-08-27T00:00:00.000Z","cpc_codes":["H04B"],"num_claims":20,"abstract":"Embodiments of the invention may provide for reducing interference in the front-end of a communications receiver. The cancellation circuitry may be utilized in conjunction with a preliminary rejection filter for improved rejection of out-of-band interference from other radio services or circuitry. The cancellation circuit may be placed in parallel with the preliminary rejection filter and may enhance suppression at the interference frequency by matching the gain and phase of the preliminary rejection filter prior to subtracting the matched signal from the preliminary rejection filter output. The cancellation circuit need not necessary know beforehand the characteristics of the preliminary rejection filter, the interference source, or the coupling mechanism, as it may adapt to unknown or varying interferers by adapting the matching gain and phase values based on the output of the preliminary rejection filter at tap points occurring both before and after application of the cancellation signal."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Systems, methods, and apparatuses for reducing interference at the front-end of a communications receiving device","description":"Embodiments of the invention may provide for reducing interference in the front-end of a communications receiver. The cancellation circuitry may be utilized in conjunction with a preliminary rejection","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8521090","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-8521090","citation_suggestion":"Patentable. \"Systems, methods, and apparatuses for reducing interference at the front-end of a communications receiving device\" (US-8521090). https://patentable.app/patents/US-8521090","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8521090","json":"https://patentable.app/api/llm-context/US-8521090","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T11:20:06.149Z"}