Ultra-wideband multi-mode automatic identification dual-link radio-frequency receiver front-end chip

Abstract

The invention belongs to the technical field of wireless communication electronics, in particular to an ultra-wideband multi-mode automatic identification dual-link radio-frequency receiver front-end chip. The receiver front-end chip comprises a working main link and a monitoring and identifying link; the chip can automatically search and identify a working frequency band of a valid signal and lock the frequency band; and then a main link controller configures a reconfigurable module of the working main link to form a radio-frequency receiver front end, receive a signal in the locked frequency band and identify the accuracy of the received signal by a digital baseband key, thereby reinforcing the confidentiality and the interference resistance of communication. The invention can be designed into IP core and digital baseband processing for carrying out single-chip integration and off-chip cascade as well. The chip is applied to the real-time communication field with higher requirements on safety or interference resistance and can be also applied to the common multi-mode communication field.

Description

technical field [0001] The invention belongs to the technical field of wireless communication electronics, and in particular relates to a radio frequency front-end chip of a receiver in multiple modes, in particular to a front-end chip of a radio frequency receiver capable of automatic identification, anti-interference and high security in multi-mode. Background technique [0002] With the rapid development of the current wireless communication field, users have put forward higher requirements for the confidentiality and anti-interference of information transmission. Multi-mode wireless communication has become a trend. With the rapid development of the Internet of Things and handheld devices today, the use of frequency bands in short-distance wireless communication inevitably conflicts; as an integrated multi-mode receiver chip, it must be able to quickly , Automatically listen to and identify the status of the frequency band to ensure the security of communication. In the...

AI Technical Summary

Problems solved by technology

In the existing technology, the software-defined method is generally used to set the frequency band of the received signal, but under the condition of the software-defined selection mode, it is difficult to listen to the signal frequency band and make a judgment on whether the frequency band is occupied or has interference. Automatically complete the search and use the free frequency band to communicate

[0003] In traditional multi-mode wireless communication receiver chips, most of the integrated modules use multiple low-noise amplifiers, gain-controllable amplifiers, mixers, and filters to achieve multi-channel, and communicate by selecting channels. There are many chip modules, and the circuit consumes a lot of power. Large size and poor reliability

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