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What role does RF chip play in mobile phone?

2022-04-22 12:14:00 【InfoQ】

What role does RF chip play in mobile phone ?

“ Traditional theory , A mobile phone includes many parts , Learn one thing , First, let's start with simplicity , Suppose the mobile phone I want to know has only the most basic functions -- Call and text , Then this mobile phone should include the following parts ① RF part ,② Baseband part ,③ Power management ,④ peripherals ,⑤ Software .” 

This lead to AP And BP The concept of :AP：Application Processor, Application chip BP：Baseband Processor, That is, baseband chip, RF chip and baseband chip are integrated in BP On chip  , Responsible for handling the signal communication between mobile phone and the outside world  , Different from AP.

AP The chip is responsible for processing the internal data of the mobile phone   Like the system is running in AP On chip  .“ RF chip is responsible for RF transceiver 、 Frequency synthesis 、 Power amplification ; Baseband chip is responsible for signal processing and protocol processing. RF chip is simply to receive and send signals . Our mobile phones are in charge of the communication with the base station when receiving calls and SMS messages .” “ Our mobile phone is digital , So all we have to deal with is digital signals , And RF emits analog signals , So there is a process of digital to analog conversion , The part of digital to analog conversion may be included in baseband chip or RF chip .”  Simply speaking , The RF chip is responsible for sending and receiving signals, and the baseband chip is responsible for processing signals .

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