A Reconfigurable RF Spread Spectrum Method Based on Programmable RF Phase Shifter

A phase shifter and reconfiguration technology, applied in the field of communication, can solve problems such as difficult signal processing, poor reconfigurability, and large insertion loss

Inactive Publication Date: 2020-04-03
INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the frequency spread based on SAW devices directly depends on the device itself, the limitations of the SAW device itself limit the performance of the frequency spread. When the spreading code is long or the frequency band is high, the insertion loss can reach the level of tens of dB; the reconfigurability is poor, once the device determines the code pattern of the spreading code, it is determined, which limits its application

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  • A Reconfigurable RF Spread Spectrum Method Based on Programmable RF Phase Shifter
  • A Reconfigurable RF Spread Spectrum Method Based on Programmable RF Phase Shifter
  • A Reconfigurable RF Spread Spectrum Method Based on Programmable RF Phase Shifter

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Embodiment 1

[0027] As a preferred embodiment of the present invention, with reference to the attached Figure 1-3 , this example discloses:

[0028] A reconfigurable RF spread spectrum method based on a programmable RF phase shifter. First, a power divider is used to decompose the input RF signal into two identical signals, and then enter two programmable RF phase shifters. The output signal of the phaser is combined by a power combiner, and the radio frequency signal is finally output; the two programmable radio frequency phase shifters control the phase value through a controller, and the controller uses the target spread spectrum sequence It is mapped to the corresponding phase signal, and then the two radio frequency phase shifters are continuously controlled according to the change characteristics of the phase signal, and finally the radio frequency spread spectrum is realized on the synthesized signal. The controller can be a microcontroller or a field programmable gate array.

Embodiment 2

[0030] As another preferred embodiment of the present invention, with reference to the attached Figure 1-3 , this example discloses:

[0031] A reconfigurable RF spread spectrum method based on a programmable RF phase shifter. First, a power divider is used to decompose the input RF signal into two identical signals, and then enter two programmable RF phase shifters. The output signal of the phaser is combined by a power combiner, and the radio frequency signal is finally output; the two programmable radio frequency phase shifters control the phase value through a controller, and the controller uses the target spread spectrum sequence It is mapped to the corresponding phase signal, and then the two radio frequency phase shifters are continuously controlled according to the change characteristics of the phase signal, and finally the radio frequency spread spectrum is realized on the synthesized signal. The RF spread spectrum processing is realized by adjusting the phase of th...

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Abstract

The invention discloses a reconfigurable radio frequency (RF) spectrum spreading method based on programmable RF phase shifters, relating to the field of communication technology. The method comprisesthe following steps: decomposing an input RF signal into two identical signals by using a power divider, and then separately entering two programmable RF phase shifters, performing power synthesis for signals output by the RF phase shifters through a power combiner, and finally outputting RF signals; and enabling a controller to map a target spread spectrum sequence to a corresponding phase signal, separately performing continuous control for the two RF phase shifters according to change characteristics of the phase signal, and finally implementing RF spectrum spreading on a synthesized signal. According to the method disclosed by the invention, the frequency of an RF carrier is not changed before and after spread spectrum processing, and the extension of signal bandwidths is achieved.

Description

technical field [0001] The invention relates to the technical field of communication, and more specifically relates to a reconfigurable radio frequency spread spectrum method based on a programmable radio frequency phase shifter. Background technique [0002] Spread spectrum communication technology can greatly improve the receiving performance of the communication system through the expansion of the frequency band, and improve the anti-interference level of the communication system, and has been widely used in high-reliability transmission links. The main implementation methods of the current spread spectrum communication system include a digital baseband spread spectrum processing method and a radio frequency spread spectrum method based on a surface acoustic wave (Surface-Acoustic-Wave, SAW) device. [0003] The digital baseband spread spectrum processing method is currently the most widely used method. It performs pseudo-random code generation and direct sequence spread ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/69
Inventor 杨大龙张祺陈大海贺寓东
Owner INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS
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