Method and device for processing radio-frequency signals

Abstract

The invention provides a method and a device for processing radio-frequency signals, comprising N channels. The method includes the following steps of: setting bandpass filtering modules correspondingto the N channels, wherein the bandpass filtering modules have low impedance to the radio-frequency signals within the frequency bands of the corresponding channels thereof, and high impedance to theradio-frequency signals beyond the frequency bands of the corresponding channels thereof; the bandpass filtering modules receive the radio-frequency signals; and the bandpass filtering modules blockthe high-impedance radio-frequency signals which do not belong to the corresponding channels thereof by the low-impedance radio-frequency signals of the corresponding channels thereof. When the N channels share one frequency resource or N radio-frequency channels are converged into one radio-frequency node, frequency-band signals can be normally separated without a single-pole n-throw radio-frequency switch, thus reducing the volume and the cost of products.

Description

technical field [0001] The present invention relates to the technical field of radio frequency signal processing, in particular to a radio frequency signal processing method and device. Background technique [0002] Modern wireless communication products support more and more frequency bands. The frequency bands have increased, but each frequency band still shares a multi-frequency antenna, and the physical channels of each frequency band are independent of each other. Problems with multi-band antennas. That is to say, N channels share one frequency resource and N radio frequency channels are collected into one radio frequency node. [0003] For this practical problem, the prior art provides a solution: use a single-pole multi-throw radio frequency switch to switch a frequency resource to N channel connections or N channels to a frequency sink node through CPU control. The disadvantages of RF switches, such as high cost, large size, and multiple GPIO resources of the CPU, ...

AI Technical Summary

Problems solved by technology

[0003] For this practical problem, the prior art provides a solution: use a single-pole multi-throw radio frequency switch to switch a frequency resource to N channel connections or N channels to a frequency sink node through CPU control. The disadvantages of RF switches, such as high cost, large size, and multiple GPIO resources of the CPU, seriously affect the cost and volume of the product, and bring great difficulty to the design of wireless communication products, especially for small devices such as wireless data cards and mobile phones. Volumetric wireless communication products bring volume and cost bottlenecks

Images