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Ka-band MIMO transceiving device for cloud target detection experiment

A technology of target detection and transceiver devices, which is applied in the field of millimeter wave MIMO detection, can solve the problems of complexity, huge system, unsuitable cloud target detection, etc., and achieve the effect of low cost and simple device structure

Active Publication Date: 2017-05-10
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004]At present, the existing Ka-band MIMO transceiver devices in China are basically used for the research of millimeter-wave MIMO communication technology, and the system is huge and complex. The design indicators and system structure of the Ka-band MIMO receiving front-end in Research on the receiving front-end are aimed at 5G communication, and are not suitable for the experimental research of cloud target detection

Method used

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  • Ka-band MIMO transceiving device for cloud target detection experiment
  • Ka-band MIMO transceiving device for cloud target detection experiment
  • Ka-band MIMO transceiving device for cloud target detection experiment

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Embodiment 1

[0034]This embodiment also includes a power divider, the input end of the power divider inputs the local oscillator signal source LO, the first local oscillator signal LO1 and the second local oscillator signal LO2 are output after the power distribution of the local oscillator signal source LO by the power divider Two identical local oscillator signals.

[0035] The signal sending module also includes a power amplifier, the input end of the power amplifier is connected to the output end of the Ka-band bandpass filter, and the output end is connected to the input end of the output selection switch. A power amplifier can be used to amplify the power of the transmitted signal.

[0036] The first switch driving unit controls the input selection switch to sequentially connect each output branch in a time-division manner; the second switch driving unit controls the input selection switch to sequentially connect each input branch in a time-division manner. The time-division method ...

Embodiment 2

[0043] refer to figure 1 As shown in FIG. 4 , the device of this embodiment is structurally divided into two parts: the main body of the transceiver device 1 and the radio frequency transmitting part 2 , which are respectively placed in two separate metal cavity shells. The radio frequency sending part 2 includes a multi-channel switch selection output unit and a power supply module for powering it. The purpose of the device being divided into two parts is to facilitate the actual adjustment of the relative position and distance between the transmitting antenna and the receiving antenna, and at the same time facilitate the addition of a power amplifier to increase the transmission power.

[0044] Both the main body 1 of the transceiver device and the radio frequency sending part 2 include power modules. In order to reduce external electromagnetic interference and increase the stability of the system, the two parts are respectively placed in two metal cavity shells. In order t...

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Abstract

The invention discloses a Ka-band MIMO transceiving device for a cloud target detection experiment. The Ka-band MIMO transceiving device comprises a signal sending module and a signal receiving module; the signal sending module comprises an up-conversion mixer, a Ka-band band-pass filter and a multi-channel switching selection output unit, which are connected in sequence; the multi-channel switching selection output unit comprises an output selection switch, a first switching drive unit and at least two signal output branches; the signal receiving module comprises a multi-channel switching selection input unit, a low-noise amplifier, a down-conversion mixer, a low-pass filter and an intermediate-frequency amplifier, which are connected in sequence; and the multi-channel switching selection input unit comprises an input selection switch, a second switching drive unit and at least two signal input branches. The Ka-band MIMO transceiving device disclosed by the invention can receive and send electromagnetic wave through multiple receiving channels, and convert a received echo signal from a millimetre wave signal to an intermediate-frequency signal; therefore, subsequence processing of the echo signal is conveniently carried out; simultaneously, the device disclosed by the invention can realize a full-coherent mechanism; and phase information of a target detection signal can be obtained.

Description

technical field [0001] The invention relates to the technical field of millimeter-wave MIMO detection, in particular to a Ka-band MIMO transceiver device for cloud target detection experiments. Background technique [0002] Millimeter-wave MIMO technology has shown broad application prospects in communication, imaging, and atmospheric detection. Among them, in the field of atmospheric detection, especially in the field of cloud target detection, this technology not only utilizes the advantages of high detection accuracy of millimeter waves, but also utilizes the advantages of MIMO technology in space resource utilization, and can observe the structure of cloud targets from multiple angles and features to obtain high-precision microscopic parameters in the cloud. [0003] Cloud target detection using millimeter-wave MIMO technology is still a new research field and requires a lot of experimental operations. Therefore, it is of great significance to study Ka-band MIMO transce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/408H04B7/0413
CPCH04B1/408H04B7/0413
Inventor 葛俊祥李浩杨现志汪洁
Owner NANJING UNIV OF INFORMATION SCI & TECH