The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Nov. 20, 2018

Filed:

Jul. 20, 2017
Applicant:

Richwave Technology Corp., Taipei, TW;

Inventor:

Shun-Nan Tai, Taipei, TW;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03G 3/30 (2006.01); H03F 1/02 (2006.01); H03F 3/21 (2006.01); H03F 3/343 (2006.01);
U.S. Cl.
CPC ...
H03F 1/0227 (2013.01); H03F 3/21 (2013.01); H03F 3/3435 (2013.01);
Abstract

A boost circuit for use in a power amplifier includes a voltage-to-voltage generator, a voltage-to-current converter, and a differential current generator. The voltage-to-voltage generator is configured to generate a converting voltage according to a reference voltage, wherein the absolute value of the slope at the rising edge of the converting voltage is smaller than the absolute value of the slope at the rising edge of the reference voltage. The voltage-to-current converter is configured to generate first current according to the converting voltage, wherein the waveform of the first current corresponds to the waveform of the converting voltage. The differential current generator is configured to generator second current associated with the waveform of the reference voltage, thereby outputting operational current whose value is associated with the first current and the second current.


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