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Generation device and method for multiway synchronous frequency division multiplexing millimeter wave sweep signal

A frequency-sweeping signal and frequency-division multiplexing technology, which is applied in the directions of multiplexing communication, time-division multiplexing system, frequency-division multiplexing system components, etc. Problems such as poor synchronization and low signal-to-noise ratio can achieve the effect of reducing imaging time, improving synchronization and improving signal-to-noise ratio

Active Publication Date: 2017-08-18
JILIN UNIV
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Problems solved by technology

[0006] In order to solve the above problems, the present invention proposes a multi-channel synchronous frequency division multiplexing millimeter wave scanning signal generation device and method. There are problems such as low signal-to-noise ratio, poor synchronization, and inability to truly realize frequency division multiplexing in the generation technology of millimeter-wave frequency sweep signals, which improves the synchronization and signal-to-noise ratio of multi-channel millimeter-wave frequency sweep signals

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  • Generation device and method for multiway synchronous frequency division multiplexing millimeter wave sweep signal

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[0033] The present invention will be further described below in conjunction with the drawings and embodiments.

[0034] It should be pointed out that the following detailed descriptions are all illustrative and are intended to provide further explanations for the application. Unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0035] It should be noted that the terms used here are only for describing specific implementations, and are not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate There are features, steps, operations, device...

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Abstract

The invention discloses a generation device and method for multiway synchronous frequency division multiplexing millimeter wave sweep signals. The device comprises a special integrated circuit, a digital signal processor and multiway synchronous frequency division multiplexing channels. The special integrated circuit transmits sine waveform data of a plurality of frequencies to the digital signal processor. The digital signal processor sends the received waveform data to the corresponding synchronous frequency division multiplexing channels and cycles the received waveform data every other certain time. Each of the multiway synchronous frequency division multiplexing channels comprises a digital to analog converter, a lowpass filter, a mixer and a frequency doubling amplifier network which are connected in sequence, and finally multiway sweep signals are generated. The device is high in signal to noise ratio and good in synchronism, and the frequency division multiplexing is realized really.

Description

Technical field [0001] The invention relates to a device and method for generating a multi-channel synchronous frequency division multiplexing millimeter wave frequency sweep signal. Background technique [0002] With the advantages of good penetration, high resolution, and low electromagnetic radiation dose, millimeter wave signals are increasingly used in the imaging field. The traditional millimeter wave imaging system has only one emission channel working at the same time, and the imaging time is long, and dynamic imaging cannot be realized. In order to increase the imaging speed, multiple transmitting channels are required to work in parallel, so the research on the generation of multi-channel millimeter wave frequency sweep signal technology has become a hot spot. [0003] There are mainly two existing technologies for generating multi-channel millimeter-wave sweep frequency signals. [0004] A single frequency multiplication signal link is used to multiply the low-frequency ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/00H04J1/04H04J3/06
CPCH04B1/0007H04J1/04H04J3/0602Y02D30/70
Inventor 王忠民常天英崔洪亮郭企嘉田现忠
Owner JILIN UNIV
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