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Multi-radio system and radio frequency module

A multi-radio frequency system and radio frequency module technology, applied in the field of multi-radio frequency systems and radio frequency modules, can solve the problems of increased complexity, high cost of the main module and high radiation, and achieve the effect of reducing the complexity and cost of implementation and low performance requirements

Active Publication Date: 2013-07-24
BEIJING HITECUBE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method first requires a high-power local oscillator signal to send the main module. The cost and radiation of the main module are high, and the slave RF module also needs a certain compensation algorithm, which also increases the complexity to a certain extent.

Method used

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  • Multi-radio system and radio frequency module
  • Multi-radio system and radio frequency module

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Embodiment Construction

[0023] In the embodiment of the present invention, the multi-radio frequency system is formed by cascading a plurality of radio frequency modules (or called radio frequency devices) with the same structure, one of the radio frequency modules can be used as the main radio frequency module (first-level radio frequency module), and the other The radio frequency module acts as a slave radio frequency module. The local oscillator signal of the main RF module can be output to one of the slave RF modules, and the slave RF module outputs the local oscillator signal to the next-level slave RF module, and so on, all slave RF modules use the same signal as the master RF module. The local oscillator signals of the modules are basically the same, thus realizing the synchronization of the local oscillators of the multi-radio frequency system.

[0024] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0025] figure 1 is a schematic str...

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Abstract

The invention provides a multi-radio system and a radio frequency module, belonging to the technical field of communication. The radio frequency module comprises a local oscillation input port, a local oscillation output port, a local oscillation source for generating a local oscillation signal, a switch, a detection circuit and a power distribution circuit, wherein one end of the switch is connected with the input end of the power distribution circuit while the other end of the power distribution circuit is connected with the local oscillation input port and the local oscillation source, one output end of the power distribution circuit is connected with the local oscillation output port while the other end of the power distribution circuit is connected with an internal circuit needing the local oscillation signal; the detection circuit is connected with the control port of the switch and the local oscillation input port, when inputting of the local oscillation signal is detected at the local oscillation input port, the switch is controlled to switch to the local oscillation input port, and when inputting of the local oscillation signal is not detected at the local oscillation input port, the switch is controlled to switch to the local oscillation source. The multi-radio system and the radio frequency module can simply and conveniently realize local oscillation synchronization.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a multi-radio frequency system and a radio frequency module. Background technique [0002] A multi-radio frequency system refers to a system including multiple radio frequency modules (or referred to as radio frequency devices). Generally speaking, each radio frequency module has its own internal local oscillator source, and the internal local oscillator source can generate local oscillator signals for the The internal circuit of the RF module is used. In some applications, multiple radio frequency modules need to perform local oscillator synchronization. [0003] For example, for a multiple-input multiple-output (Multi-input Multi-output, MIMO) system, if multiple MIMO systems use independent local oscillators, each local oscillator will generate a certain random phase drift, and each local oscillator The phase drifts are independent of each other, which will cause unkno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L7/02
Inventor 陈康凯彭彪
Owner BEIJING HITECUBE TECH
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