Method, device and system for realizing signal transmission with low power consumption

Abstract

The invention discloses a method, a device and a system for realizing signal transmission with low power consumption and carrier suppression correction. The method comprises the following steps: analog baseband signals are sent to a transmission low-pass filter, and out-off-band harmonic waves are filtered by the transmission low-pass filter to be output in a mode of low-frequency signals; a direct-current correction module acquires the low-frequency signals output by the transmission low-pass filter and calibrates the low-frequency signals output by the low-pass filter according to the information of the acquired low-frequency signals; the transmission low-pass filter sends the calibrated low-frequency signals to a transmitter mixer, and the transmitter mixer carries out up-conversion treatment on the low-frequency signals and outputs radio-frequency signals; and a passive resistance array attenuator controls the power of the radio-frequency signals output by the transmitter mixer and transmits the radio-frequency signals. In the method, the device and the system provided by the invention for realizing carrier suppression, the passive resistance array attenuator is adopted to realize the purpose of controlling signal power, and the signal power does not need to be biased by current, thereby greatly reducing the power loss.

Description

technical field [0001] The present application relates to the communication field, and in particular to a method, device and system for realizing low power consumption transmitting signals. Background technique [0002] The design of the transmitter involved in the present invention is an important part of the radio frequency transceiver chip, and it plays the role of converting low-frequency baseband signals into radio frequency signals and transmitting them with a certain power. The quality of the transmitted signal and the power consumption of the transmitter itself when transmitting a high-power signal are important indicators to measure the design quality of the transmitter. If the quality of the transmitted signal is good, the transmitter has excellent call quality and has Higher information transfer rate. With low power consumption, the transmitter has the capability of longer standby time and longer talk time, which is crucial in wireless communication systems. The...

AI Technical Summary

Problems solved by technology

Among them, carrier suppression is the most serious and difficult problem that affects the error vector magnitude.

At the same time, because wireless communication is mostly used for mobile terminals, the power consumption of the signal is too fast when it is transmitted at high power, the power consumption is large, and the talk time is too short is also a big problem.

[0003] In order to solve the problem of excessive power consumption during high-power transmission, some manufacturers reduce the number of stages of variable gain amplifiers to reduce power consumption, but this method will seriously reduce the isolation of the entire transmitter and will seriously deteriorate Dynamic Range of Variable Gain Amplifiers

[0004] It can be seen that in the prior art, high-power transmission is accompanied by a large power consumption, so how to reduce power consumption during high-power transmission is a technical problem that needs to be solved

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