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TD-SCDMA multi-carrier power amplifier for wireless sensor network

A TD-SCDMA and power amplifier technology, applied in the field of TD-SCDMA multi-carrier power amplifiers in wireless sensor networks, can solve the problems of device output capability limitations, impossibility, and system efficiency reduction, and achieve small size, compact circuit design, low cost effect

Inactive Publication Date: 2014-01-22
JIAXING WIRELESS SENSOR NETWORKS CENT CAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the traditional power amplifier circuit design, high-power devices are used, combined with power back-off to meet the linearity requirements of the system, resulting in lower system efficiency; due to the limitations of

Method used

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  • TD-SCDMA multi-carrier power amplifier for wireless sensor network
  • TD-SCDMA multi-carrier power amplifier for wireless sensor network
  • TD-SCDMA multi-carrier power amplifier for wireless sensor network

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Embodiment Construction

[0021] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] In the present invention, the TD-SCDMA multi-carrier power amplifier is the equipment used to cooperate with the wireless sensor network TD-SCDMA cellular base station to solve the blind area coverage of OFDM (orthogonal frequency division multiplexing) modulation signals. The power amplifier adopts advanced pre-distortion feed-forward technology, which can ensure the distortion-free amplification of signals with a peak-to-average ratio and ensure its high linearity. The ACPR (Adjacent Channel Power Rejection) index of the power amplifier at 20W output exceeds 55dBc, which is much higher than the 3GPP protocol index of 45dBc, which greatly improves the signal quality, reduces the interference to adjacent channels, and reduces The interferen...

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Abstract

The invention discloses a TD-SCDMA multi-carrier power amplifier for a wireless sensor network, comprising a power amplifying module and a control module, wherein, the power amplifying module mainly comprises an input matching network, an output matching network, a driving module, a power module and a filter module; and the control module mainly comprises an attenuation network, a gain control module and a loop control module. The TD-SCDMA multi-carrier power amplifier for the wireless sensor network greatly improves signal quality, reduces interference to adjacent channels and also reduces interference of a base station and a terminal to external signals.

Description

technical field [0001] The invention belongs to the equipment for cooperating with wireless sensor network TD-SCDMA cellular base stations to solve the blind area coverage of OFDM (orthogonal frequency division multiplexing) modulation signals. Background technique [0002] With the rapid development of communication and information technology, the development trend of human access to information is moving from fixed to mobile, from voice to multimedia. At present, there are mainly three network architectures that can provide multimedia content to a large number of audiences in a mobile environment: mobile communication network (WiMAX), based on OFDM technology, bidirectional transmission, operating frequency is 2.3GHz, 2.5GHz, 3.5GHz, 5.8GHz; wireless local area network (WLAN), based on DSSS technology, two-way transmission, working frequency is 2.4GHz, 5.8GHz; terrestrial digital broadcasting network (DVB-T), based on COFDM technology, one-way transmission, working frequen...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/005H04B7/04
Inventor 李伟柳军鲍增彬姜华刘海涛
Owner JIAXING WIRELESS SENSOR NETWORKS CENT CAS