Multi-mode RF signal generator and signal generating method thereof

Abstract

The invention discloses a multimode radio frequency signal generator, comprising a personal computer as well as a baseband I, a Q signal generator, a multi-carrier digital up-converter subsystem, a D / A converter, a clock subsystem and a microchip control subsystem that are respectively connected with the multimode radio frequency signal generator; wherein, the baseband I and the Q signal generator are connected with the multi-carrier digital up-converter subsystem, the D / A converter and a radio frequency subsystem in sequence; the clock subsystem is simultaneously connected with the baseband I, the Q signal generator, the multi-carrier digital up-converter subsystem, the D / A converter, the radio frequency subsystem and the microchip control subsystem; the microchip control subsystem is connected with the baseband I, the Q signal generator, the multi-carrier digital up-converter subsystem, the D / A converter and the radio frequency subsystem at the same time; the radio frequency subsystem is provided with a multimode multi-carrier radio frequency signal output end. The multimode radio frequency signal generator has the advantages of excellent performance, good feasibility, strong system flexibility and expandability as well as easy realization of system miniaturization and low power consumption.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a multi-mode radio frequency signal generator and a signal generating method thereof. Background technique [0002] Throughout the current mobile communication market, the coexistence of various systems and the continuous emergence of new systems are the outstanding features of today's mobile communication market. In the digital cellular system, the system with TDMA as the multiple access method and the system with CDMA as the multiple access method coexist, such as the coexistence of GSM, CDMA, WCDMA, etc. From the perspective of global regions, the digital cellular mobile communication system coexists in different regions Different systems, such as ADC in North America, GSM in Europe and China, and JDC in Japan, coexist. Nowadays, new communication systems and standards are constantly proposed, and the life span of communication products is shortened sharply. Therefore, in ...

AI Technical Summary

Problems solved by technology

[0006] However, a major defect of the existing multi-carrier signal source is that when the multi-carrier signal is output, there is a large intermodulation signal, which makes it impossible to apply the multi-carrier signal generated by the signal source in the test.

Therefore, the actual test generally needs to combine multiple signal sources to reduce intermodulation signals and output multi-carrier signals that meet the actual requirements. Although this processing method can meet the actual test, it is a waste of resources.

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