{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8542062","patent":{"patent_number":"US-8542062","title":"Adaptive digital pre-distortion method and device to enhance the power utility of power amplifiers in wireless digital communication applications","assignee":null,"inventors":[],"filing_date":"2010-11-16T00:00:00.000Z","publication_date":"2013-09-24T00:00:00.000Z","cpc_codes":["H04L"],"num_claims":11,"abstract":"The present invention concerns the field of power amplifiers and in particular the enhancement of the performance of the amplifier by a feedback loop acting on the input signal. It describes a method for linearizing a power amplifier circuit having a digital base-band input signal, a power output signal, a power amplifier and a linearizer module (LM), this method comprising the steps of: extracting a feedback signal from the power amplifier (PA) output signal, down-converting the feedback RF-signal to feedback IF-signal, filtering the feedback IF-signal with a band-pass filter, A/D converting the filtered feedback IF-signal into a feedback digital signal, converting the feedback digital signal into frequency-domain using fast-Fourier transform FFT on a block of n-samples to obtain a feedback FB-FFT block, converting the input base-band digital signal into frequency-domain using fast-Fourier transform FFT on a block of n-samples to obtain a input FF-FFT block, dividing the input FF-FFT block with the feedback FB-FFT block to obtain FFT correction samples blocks, averaging at least two blocks of FFT correction samples to obtain FFT correction coefficient values, applying the FFT correction coefficient values to a digital complex multiplier, converting the output of the multiplier from frequency domain into time domain with an inverse FFT module to obtain a corrected digital input signal, converting the corrected digital input signal to analog IF signal with a digital to analog converter to obtain a corrected IF input signal, applying the band-pass filter to the corrected IF input signal, up-converting the filtered corrected IF input signal to obtain a corrected RF input signal, applying the corrected RF input signal to the power amplifier."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Adaptive digital pre-distortion method and device to enhance the power utility of power amplifiers in wireless digital communication applications","description":"The present invention concerns the field of power amplifiers and in particular the enhancement of the performance of the amplifier by a feedback loop acting on the input signal. It describes a method ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8542062","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-8542062","citation_suggestion":"Patentable. \"Adaptive digital pre-distortion method and device to enhance the power utility of power amplifiers in wireless digital communication applications\" (US-8542062). https://patentable.app/patents/US-8542062","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8542062","json":"https://patentable.app/api/llm-context/US-8542062","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T10:17:35.515Z"}