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Front end radio frequency transceiver system for multi-standard fully-compatible mobile user terminal chip and its application system

A mobile user and terminal chip technology, applied in the transmission system, electrical components, etc., can solve the problems of high system complexity, large space occupation, poor compatibility, etc., and achieve low system complexity, small space occupation, and good compatibility Effect

Active Publication Date: 2015-02-18
LIWITEK SEMICON WUXI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0018] In the process of realizing the present invention, the inventor found that there are at least defects in the prior art such as high cost, high system complexity, poor compatibility and large occupied space.

Method used

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  • Front end radio frequency transceiver system for multi-standard fully-compatible mobile user terminal chip and its application system
  • Front end radio frequency transceiver system for multi-standard fully-compatible mobile user terminal chip and its application system
  • Front end radio frequency transceiver system for multi-standard fully-compatible mobile user terminal chip and its application system

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Embodiment Construction

[0066] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0067] Embodiment of RF front-end transceiver system

[0068] According to an embodiment of the present invention, such as Figure 6-Figure 12 As shown, a radio frequency front-end transceiver system with multi-standard fully compatible mobile user terminal chips is provided to realize the TD-LTE / TD-SCDMA / Quad-GSM radio frequency front-end system architecture with cost and performance optimization, and focus on the LTE- TDD frequency band, from 1850MHz to 2660MHz, supports TD-SCDMA (3G), LTE-TDD (4G) and mature four-band 2G standards at the same time:

[0069] Band 2: 1930~1990MHz RX, 1850-1910MHz TX(PCS);

[0070] Band 3: 1805~1880MHz RX, 1710-1785MHz TX(DCS); ...

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Abstract

The invention discloses a front end radio frequency transceiver system for a multi-standard fully-compatible mobile user terminal chip. The front end radio frequency transceiver system comprises an LTE (long term evolution) diversification receiver, a single frequency synthesizer and an emitter, wherein the LTE diversification receiver is used for carrying out front end treatment at least including track filtering, frequency mixing, variable gain medium frequency and / or low noise amplifying, power detecting and AD (Analog-to-digital) converting on a radio frequency signal with a preset frequency spectrum; the single frequency synthesizer is used for carrying out frequency synthesizing treatment at least including multi-channel analog-to-digital frequency splitting, phase discriminating, oscillating, low-pass filtering and modulating on an acquired front end treatment result; and the emitter is used for carrying out frequency conversion treatment at least including radio frequency AD converting, signal attenuating and frequency converting on a frequency synthesized result, and carrying out high, middle and low end outputs. The system disclosed by the invention can overcome the defects in the prior art of high cost, high system complexity, poor compatibility, large occupied space and the like, so as to achieve the advantages of low cost, low system complexity, good compatibility, small occupied space and the like.

Description

technical field [0001] The invention relates to the technical field of fourth-generation mobile communication, in particular to a radio frequency front-end transceiver system of a multi-standard fully compatible mobile user terminal chip and an application system thereof. Background technique [0002] With the development of smart phones and tablets, the traffic volume of mobile data has increased significantly. Time Division Long Term Evolution (TD-LTE for short) is the fourth-generation LTE LTE jointly developed by Alcatel-Lucent, Nokia Siemens Networks, Datang Telecom, Huawei Technologies, ZTE, and China Mobile. 4G mobile communication technology and standard) improves spectrum utilization, increases transmission rate and capacity of data that can be processed. The success of LTE technology depends on the development of the ecosystem in which it exists, and transceiver technology must evolve at the same or faster rate than the infrastructure implementation is in place. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/40
Inventor 栗强
Owner LIWITEK SEMICON WUXI
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