Radio frequency circuit of GSM mobile phone

Abstract

The utility model relates to a radio frequency circuit of a GSM mobile phone, which is suitable for the communication field. The radio frequency circuit of a mobile phone is composed of a receiver front-end circuit, a SAW filter, and a transmitter circuit. The circuit has excellent dynamic range and selectivity, and has the characteristics of short development cycle and low risk under the given performance requirements, which reduces the manufacturing cost, reduces the system volume, shortens the design cycle, and greatly improves the flexibility of the system .

Description

Technical field [0001] The invention relates to a radio frequency circuit of a GSM mobile phone, which is suitable for the communication field. Background technique [0002] In the field of mobile communication terminals, the circuit form is developing towards highly integrated, intelligent and ultra-small. Various single-chip solutions emerge in an endless stream, and have developed from the previous integrated RF front end (RF Front End) to baseband Circuits, and even multiple microprocessors are integrated together to provide terminal designers with a more powerful and compact solution. Some of the latest products waiting for evaluation even integrate the CMOS-based PA with the RF front-end, and also include many expanded multimedia functions, such as digital image processing, LCD control, Camera control and so on. Perhaps in the near future, a real single-chip GSM mobile phone will appear on the market, integrating all electronic components except digital camera, LCD, a...

AI Technical Summary

Problems solved by technology

Whether the radio frequency receiving system or the radio frequency transmitting system fails in the circuit of the mobile phone, the mobile phone cannot enter the GSM network.

Images