Variable gain power amplifier for multi-channel self-adapted matching network

A technology of power amplifier and power amplification module, which is applied in the direction of data exchange through path configuration, climate sustainability, sustainable communication technology, etc. It can solve the problems of low output power output power and inability to realize signal linear amplification, etc., and achieve high Effect of Linearity, Low Power Consumption, Good Performance Parameters

Inactive Publication Date: 2008-09-10
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
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Problems solved by technology

But the shortcomings of existence are: first, the article only selects two modes: low output po

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  • Variable gain power amplifier for multi-channel self-adapted matching network
  • Variable gain power amplifier for multi-channel self-adapted matching network
  • Variable gain power amplifier for multi-channel self-adapted matching network

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Embodiment Construction

[0020] Below in conjunction with accompanying drawing and example the present invention is described in further detail.

[0021] Such as figure 1 As shown, the multi-channel adaptive matching network variable gain power amplifier of the present invention includes a state controller 100 , an input matching network 200 , a multi-channel variable gain power amplification module 300 and an output matching network 400 .

[0022] The state controller 100 receives three input signals from the MAC layer, namely: a matching control signal, a channel control signal and a gain control signal. After the matching control signal is selected for matching, two matching selection signals are generated, which are sent to the input matching network 200 and the output matching network 400 respectively. After the channel selection signal is channel selected, a channel selection signal is generated and sent to the multi-channel variable gain power amplification module 300 . The gain control signa...

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Abstract

The invention discloses a multichannel self-adaptive matching network power amplifier with variable gain, which comprises a state controller, an input matching network, a multichannel power amplifier module with variable gain and an output matching network. The power amplifier adjusts impedance matching networks of the input matching network and the output matching network. The state controller provides a matching selection signal to be used for adjusting the input matching network and the output matching network for various application so as to obtain high linearity and low power consumption. Power amplifier units of the multichannel power amplifier module with variable gain respectively have different saturation output powers. Based on a channel selection signal provided by the state controller, one of the power amplifier units is in operation; therefore, comparatively high efficiency can be obtained in two modes of a mode of comparatively high output power and a mode of comparatively low output power. In quite wide range of the output power, the transmission efficiency of the signals can be improved. The power amplifier of the invention can be applied to various application occasions and have good performance parameters, compared with the existing power amplifier.

Description

technical field [0001] The invention relates to the fields of wireless local area networks and radio frequency integrated circuits, in particular to a multi-channel self-adaptive matching network variable gain power amplifier, which is especially suitable for radio frequency front-end transmitters of various wireless network system-on-chips. Background technique [0002] In order to improve the utilization rate of frequency spectrum, modern communication technology generally adopts the technology of simultaneous amplitude modulation and phase modulation; in addition, it is necessary to prevent mutual interference between different communication systems and crosstalk between adjacent channels in this system. Therefore, the PA (power amplifier) ​​must have good linear characteristics; based on the mobile requirements of communication, the PA should have the highest possible power efficiency. In a radio frequency transceiver, the power amplifier is an extremely important part, ...

Claims

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Application Information

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IPC IPC(8): H04B7/005H04L12/28
CPCY02D30/70
Inventor 邹雪城张科峰蔡梦
Owner HUAZHONG UNIV OF SCI & TECH
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