Delta-modulated power supply

Details Delta-modulated power supply Delta-modulated power supply

1998-09-18

1999-10-26

Mottola, Steven J.

Amplifiers

Modulator-demodulator-type amplifier

330207A, 330297, H03F 338

Patent

active

059735562

ABSTRACT:
A delta-modulated magnitude amplifier is used to amplify the magnitude component of an RF power amplifier that employs envelope elimination and restoration. The delta-modulated amplifier introduces a smaller amount of non-linearity than traditional approaches, which are based upon pulse-width modulation. The disclosed technique can be implemented using switched-capacitor circuits in a standard MOS technology with only two external components, i.e., an inductor and a capacitor. Thus, the disclosed technique allows the implementation of an efficient and yet linear RF power amplifier using low-cost MOS technology.

REFERENCES:
patent: 5352986 (1994-10-01), Modgil et al.
patent: 5847602 (1998-12-01), Su

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