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A Multi-channel RF Signal Waveform and Phase Precise Control Circuit

A radio frequency signal, precise control technology, applied in the direction of electrical components, pulse technology, pulse processing, etc., can solve the problems of precise control of phase and time delay, and achieve the effect of wide application and strong practicability

Active Publication Date: 2021-03-12
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the entire radio frequency system will be affected by this uncertainty, which will affect the precise control of phase and delay

Method used

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  • A Multi-channel RF Signal Waveform and Phase Precise Control Circuit
  • A Multi-channel RF Signal Waveform and Phase Precise Control Circuit
  • A Multi-channel RF Signal Waveform and Phase Precise Control Circuit

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Embodiment Construction

[0016] Below in conjunction with the drawings, preferred embodiments of the present invention are given and described in detail.

[0017] To achieve precise control of the waveform and phase of multi-channel RF signals, three factors need to be considered first: the delay of the intermediate frequency signal, the phase of the local oscillator signal, and the delay of the RF circuit after the mixer. To control these three factors, it is necessary to add in the circuit respectively: intermediate frequency delay device, local oscillator phase shifter, radio frequency delay device. These three factors are not completely independent. To achieve precise control of the RF signal waveform and phase, it can be done by controlling the delay of the intermediate frequency signal and the phase of the local oscillator signal.

[0018] In view of the above, if figure 1 As shown, the present invention, that is, a multi-channel radio frequency signal waveform and precise phase control circui...

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Abstract

The invention relates to a multi-channel radio frequency signal waveform and phase precision control circuit, which includes: N channels, each channel includes: a local oscillator source; a controllable phase shifter, the input end of which is connected to the local oscillator source The output terminal is connected; a controllable delayer, which accepts one channel of the intermediate frequency signal; a mixer, one input terminal is connected to the output terminal of the controllable phase shifter, and the other input terminal is connected to the controllable and a radio frequency amplifier, its input terminal is connected to the output terminal of the mixer, and its output terminal generates one path of the radio frequency signal; wherein, the N channels in the N channels The input terminal of the vibration source receives the same clock signal input from the outside. The invention can accurately control the phase difference and time delay difference between the radio frequency signals of each channel, so as to ensure that the phase difference and time delay difference between any two channel radio frequency signals are within the required range.

Description

technical field [0001] The invention relates to waveform and phase control technology of multi-channel radio frequency signals, in particular to a multi-channel radio frequency signal waveform and phase precise control circuit. Background technique [0002] In a multi-channel RF system, sometimes it is necessary to precisely control the waveform and phase of each channel RF signal. However, in radio frequency systems, the generation of local oscillator signals is inseparable from the phase-locked loop. Due to the working principle of the phase-locked loop, the initial phase of the local oscillator signal is random. The core device mixer of the frequency conversion system can generally be equivalent to a "multiplier + filter". When the intermediate frequency signal and the local oscillator signal are "multiplied" by the mixer, the phase of the two will be reflected at the output of the mixer, that is, on the radio frequency signal. Therefore, the entire radio frequency sys...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K5/00H04B1/00H04B1/40
Inventor 汪书娜李凌云盆天玉孙晓玮
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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