Class D amplifier using Fs/4 modulation and envelope tracking power supplies
US10020783B2 · kind B2 · utility
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16References
15Claims
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Key dates
| Filing date | Jul 1, 2016 |
| Grant date | Jul 10, 2018 |
| Priority date | — |
| Expiry date | Jul 1, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/0008
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A high power class D amplifier/modulator for use in Radio Frequency ranges that is capable of digital modulation schemes at high efficiencies is disclosed. The new amplifier design features an envelope tracker unit that uses digital pulse-width modulation (PWM) generation to create analog I and Q phase high voltage signal components and sign bits. The I and Q phase signal components and sign bits are fed into an Fs/4 modulator stage to produce an analog output that is an high power RF signal modulated by the analog input signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.