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Bias circuit and power amplifier with dual power mode

一种功率放大器、功率模式的技术，应用在功率放大器、带有半导体器件/放电管的放大器、放大器等方向，能够解决没有公开功耗、很难传输功率、不允许高功率模式或低功率模式等问题

Inactive Publication Date: 2014-06-18
SAMSUNG ELECTRO MECHANICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, existing power amplifiers that have been designed provide a fixed bias voltage and do not allow selection of high power mode or low power mode when necessary, so it is difficult to properly deal with the applied wireless communication system or communication environment. The transmission power required by the characteristic
[0010] The following related prior art documents refer to power amplifiers, but they do not disclose the technical subject for selecting high power mode or low power mode to reduce power consumption

Method used

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  • Bias circuit and power amplifier with dual power mode
  • Bias circuit and power amplifier with dual power mode
  • Bias circuit and power amplifier with dual power mode

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Embodiment Construction

[0028] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. While this invention may be embodied in many different forms, it should not be construed as limited to the embodiments set forth herein.

[0029] Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0030] figure 1 is a circuit diagram of a bias circuit and a power amplifier according to an embodiment of the present invention.

[0031] refer to figure 1 , the bias circuit according to the embodiment of the present invention may include a regulated voltage generation unit (regulated voltage generation unit) 100 , a bias voltage generation unit 200 and a power mode control unit 300 .

[0032] The power amplifier according to the embodiment of the present invention may include a voltage stabilizing unit 100 , a bias voltage genera...

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Abstract

There are provided a bias circuit and a power amplifier with a dual-power mode. The bias circuit includes a regulated voltage generation unit generating a regulated voltage by using a reference voltage, a bias voltage generation unit generating a bias voltage according to the regulated voltage, and a power mode control unit operating in any one of a high power mode and a low power mode according to a power mode voltage and dropping the regulated voltage in the low power mode.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Korean Patent Application No. 10-2012-0146583 filed in the Korean Intellectual Property Office on December 14, 2012, the entire contents of which are hereby incorporated by reference. technical field [0003] The invention relates to a bias circuit and a power amplifier with dual power modes applicable to a wireless communication system. Background technique [0004] In general, a wireless communication scheme is a digital modulation / demodulation scheme having an appropriate scheme in terms of frequency usage efficiency enhancement employed therein. For example, a cellular phone based on a Code Division Multiple Access (CDMA) scheme uses a Quadrature Phase Shift Keying (QPSK) scheme, and a wireless local area network (WLAN) that follows the IEEE (Institute of Electrical and Electronics Engineers) 802.11 communication standard uses an Orthogonal Frequency Division Multiplexing Usin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F1/30H03F3/20
CPCH03F1/302H03G1/0017H03F3/245H03F1/30H03F3/19
Inventor 宋泳镇
Owner SAMSUNG ELECTRO MECHANICS CO LTD