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Power supply modulator, power amplifier having same and corresponding control method

A power modulation and amplifier circuit technology, which is applied in power amplifiers, amplifiers with semiconductor devices/discharge tubes, amplifiers, etc., and can solve the problems of reducing the power efficiency of power modulators, high switching losses, etc.

Active Publication Date: 2022-03-08
NANYANG TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above limitations are partly due to the unavoidable trade-off between the parameters of the power supply modulator
For example, narrow bandwidth and low switching noise usually require high switching frequency, which in turn leads to high switching losses and thus reduces the power efficiency of the power supply modulator

Method used

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  • Power supply modulator, power amplifier having same and corresponding control method
  • Power supply modulator, power amplifier having same and corresponding control method
  • Power supply modulator, power amplifier having same and corresponding control method

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Embodiment Construction

[0037] The following detailed description refers to the accompanying drawings, which show, by way of illustration, specific details and embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. Other embodiments may be utilized and structural, logical, and electrical changes may be made without departing from the scope of the present invention. The various embodiments are not necessarily mutually exclusive, as some embodiments can be combined with one or more other embodiments to form new embodiments.

[0038] Embodiments described in the context of one method or device are similarly valid for the other method or device. Similarly, embodiments described in the context of a method are similarly valid for an apparatus, and vice versa.

[0039] Features described in the context of an embodiment may correspondingly apply to the same or similar features in other embodimen...

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Abstract

A power supply modulator is provided, having: a first amplifier circuit configured to generate a first electrical signal; a second amplifier circuit configured to generate a second electrical signal, and the first electrical signal and the second electrical signal are used to drive an electrical load; and a control circuit electrically coupled to the first amplifier circuit and the second amplifier circuit, wherein the control circuit is configured to generate a pulsed electrical signal and provide an output control signal to the second amplifier circuit for controlling the second amplifier circuit Generation of an output signal, wherein the power supply modulator is configured to operate in two modes of operation, the first amplifier circuit generating a first electrical signal in response to a quiescent current of the first amplifier circuit, and the control circuit in one mode according to a clock signal Instead, a modulated electrical signal is generated, and the second amplifier circuit operates at a different frequency.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of priority from Singapore Patent Application No. 10201804846Y filed on 7 June 2018, the contents of which are hereby incorporated by reference in their entirety for all purposes. technical field [0003] The present various embodiments relate to a power supply modulator, a power amplifier having the power supply modulator, a method for controlling the power supply modulator, and a method for controlling the power amplifier. Background technique [0004] Short battery life is one of the challenges of mobile communication devices, exacerbated by the demand for ever-increasing speed and data. This is partly due to the communication protocols employed, such as LTE (Long Term Evolution) and LTE-A (LTE-Advanced), utilizing spectrally efficient modulation schemes such as quadrature amplitude modulation of 16 or higher. These modulation schemes impose stringent requirements on the linearit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03F1/02H03F3/24H03F3/68
CPCH03F1/0227H03F3/245H03F3/193H03F3/72H03F2203/7209H03F2200/451H03F2200/102H03F2200/432H03F3/2171
Inventor 张健学葛彤何慧翘郭林飞
Owner NANYANG TECH UNIV