{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9843344","patent":{"patent_number":"US-9843344","title":"Digital variable capacitance circuit, resonant circuit, amplification circuit, and transmitter","assignee":null,"inventors":[],"filing_date":"2016-06-20T00:00:00.000Z","publication_date":"2017-12-12T00:00:00.000Z","cpc_codes":["H04B","H04B"],"num_claims":20,"abstract":"The present invention aims to provide a digital variable capacitance circuit, a resonant circuit, an amplification circuit, and a transmitter having a high performance. A digital variable capacitance circuit 50 according to this embodiment is a digital variable capacitance circuit including a plurality of unit capacity cells 51-0 to 51-n connected in parallel between two output terminals OUTP and OUTN, in which the unit capacity cell 51 comprises: a first capacitor Cu1 having one end connected to one output terminal OUTP; a second capacitor Cu2 that is connected in series with the first capacitor Cu1 between the two output terminals; and an NMOS transistor M1 that is connected in parallel with the second capacitor Cu2 and is controlled in accordance with a digital control signal."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Digital variable capacitance circuit, resonant circuit, amplification circuit, and transmitter","description":"The present invention aims to provide a digital variable capacitance circuit, a resonant circuit, an amplification circuit, and a transmitter having a high performance. A digital variable capacitance ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9843344","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-9843344","citation_suggestion":"Patentable. \"Digital variable capacitance circuit, resonant circuit, amplification circuit, and transmitter\" (US-9843344). https://patentable.app/patents/US-9843344","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9843344","json":"https://patentable.app/api/llm-context/US-9843344","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T04:07:50.737Z"}