Fourth-generation multi-standard fully-compatible mobile radio-frequency front-end broadband low-noise amplifying device

Abstract

The invention discloses a fourth-generation multi-standard fully-compatible mobile radio-frequency front-end broadband low-noise amplifying device which comprises a single-end input and differential output noise cancellation type low-noise amplifier, a tracking filter quality factor boosting circuit and a class AB module, wherein the single-end input and differential output noise cancellation type low-noise amplifier is used for enabling noise cancellation and signal complementary addition by the aid of opposite phases of signals and noise; the tracking filter quality factor boosting circuit is used for increasing quality factors of an output cavity by adjusting negative transconductance so as to obtain optimal out-of-band interference filtering effects; and the class AB module is used for enabling a current mode amplifier not to be unsaturated so as to respond to strong out-of-band interference. The broadband amplifier adopts single-end input and uses single inductor to meet noise performance, can filter large out-of-band signals and covers TD-LTE (time division-long term evolution), TD-SCDMA (time division-synchronous code division multiple access) and quad-band GSM (global system for mobile communications), and the fourth-generation multi-standard fully-compatible mobile radio-frequency front-end broadband low-noise amplifying device has the advantages of low cost, multiple applicable standards, high data rate, high sensitivity, low noise and small occupied space.

Description

Technical field [0001] The present invention relates to the field of fourth-generation mobile communications, in particular to a multi-standard and fully compatible fourth-generation mobile radio frequency front end broadband low-noise amplifier device. Background technique [0002] With the rapid development of mobile communication technology, in order to cover Time Division Long Term Evolution (TD-LTE for short), it is developed by Alcatel-Lucent, Nokia Siemens Communications, Datang Telecom, Huawei Technologies, ZTE, China Mobile The fourth generation (4G mobile communication technology and standard) and Time Division-Synchronous Code Division Multiple Access (TD-SCDMA for short) jointly developed by industry players are the third-generation mobile communication standards proposed by China , Referred to as 3G; it is also one of the three 3G standards approved by the ITU, the international standard for wireless communications based on China’s intellectual property rights, widel...

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Problems solved by technology

[0008] In the process of realizing the present invention, the inventors found that there are at least defects in the prior art such as high cost, few applicable standards, low data rate, low sensitivity, large noise and large occupied space.

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