Radio frequency chip and system for wireless local area network and broadcast integrated transmission

Abstract

The invention relates to a radio frequency chip for wireless local area network and broadcast integrated transmission. The radio frequency chip comprises a wireless local area network receiving link radio frequency front-end circuit, a U waveband receiving link radio frequency front-end circuit, a wireless local area network transmitting link radio frequency front-end circuit, a transmitting and receiving shared baseband filtering and variable gain amplification unit and a radio frequency phase-locked loop frequency integrated circuit, wherein the wireless local area network receiving link radio frequency front-end circuit is connected with the transmitting and receiving shared baseband filtering and variable gain amplification unit after being combined with the U waveband receiving link radio frequency front-end circuit; the wireless local area network transmitting link radio frequency front-end circuit is connected with the transmitting and receiving shared baseband filtering and variable gain amplification unit. The chip has a wireless network mode and a broadcast receiving mode. According to the wireless local area network and broadcast integrated transmission radio frequency chip, wireless network signal transmission and broadcast signal transmission are integrated, the working mode can be converted according to the use situations, and the advantages of various transmission modes can be fully utilized, so that the demands are met, and meanwhile, the contradiction among system performance, power consumption and cost is solved.

Description

technical field [0001] The invention relates to the field of communication chip design, in particular to a structure of a radio frequency chip used to realize integrated transmission of a local area wireless network and broadcasting, and a system using the chip. Background technique [0002] Many wireless transmission systems are many-to-one transmission, that is, distributed nodes aggregate data to a central node. Some of these systems are characterized by a large amount of returned data, but allow occasional transmission distortion, such as a video surveillance system; while some systems are characterized by a small amount of transmitted data, but do not allow any transmission distortion, such as a wireless microphone system , while some systems have both the above two requirements, such as video surveillance systems that require node control. At present, there is no wireless transmission technology that can well solve the system application problem with the above two tra...

AI Technical Summary

Problems solved by technology

At present, attempts to apply it to related application systems have encountered many problems: when the nodes are far away, the transmission quality is obviously deteriorated, and the throughput drops sharply, resulting in insufficient transmission bandwidth; the nodes need stronger transmission power, or arrange more Wireless routers, thereby negating the advantages brought by the WiFi system

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