{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8519787","patent":{"patent_number":"US-8519787","title":"High frequency amplifier, wireless device, and control method","assignee":null,"inventors":[],"filing_date":"2009-12-03T00:00:00.000Z","publication_date":"2013-08-27T00:00:00.000Z","cpc_codes":["H04B","H04B"],"num_claims":11,"abstract":"Provided is a high frequency amplifier that can suppress from increasing the circuit size while improving efficiency at the time of low output. A high frequency amplifier according to one aspect of the present invention includes a carrier amplifier 7 that amplifies an input signal, a peak amplifier 8 that amplifies the input signal with a predetermined amplitude or greater among the input signal, an envelope detector 3 that extracts envelope information of the input signal, and a bias control circuit 4 that calculates a calculation voltage to be supplied to the carrier amplifier 7 according to the envelope information, compares the calculation voltage and a threshold, and changes the calculation voltage to be supplied to the carrier amplifier 7. "},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"High frequency amplifier, wireless device, and control method","description":"Provided is a high frequency amplifier that can suppress from increasing the circuit size while improving efficiency at the time of low output. A high frequency amplifier according to one aspect of th","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8519787","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-8519787","citation_suggestion":"Patentable. \"High frequency amplifier, wireless device, and control method\" (US-8519787). https://patentable.app/patents/US-8519787","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8519787","json":"https://patentable.app/api/llm-context/US-8519787","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T19:29:41.172Z"}