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Three-function reconfigurable common-aperture antenna array with time-modulated phase conjugate direction backtracking

A phase-conjugated and time-modulated technology, applied in antenna arrays, antennas, electrical components, etc., can solve the problems of time modulation or single direction backtracking of the antenna system, and achieve multi-functional, high-precision, and simple reconstruction. Effect

Inactive Publication Date: 2018-01-05
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] It can be seen from the above that the existing antenna system can only realize a single function of time modulation or direction traceability, and cannot realize the three functions of time modulation, direction traceback and time modulation direction traceback in the same antenna array.

Method used

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  • Three-function reconfigurable common-aperture antenna array with time-modulated phase conjugate direction backtracking
  • Three-function reconfigurable common-aperture antenna array with time-modulated phase conjugate direction backtracking
  • Three-function reconfigurable common-aperture antenna array with time-modulated phase conjugate direction backtracking

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Embodiment

[0026] combine figure 2 , the single-frequency time modulation, phase conjugation and time modulation phase conjugation three-function reconfigurable common-aperture antenna array of the present invention consists of four antenna units 1, four single-pole three-throw switches 2, one switch control circuit 3, four Phase shifter 5, four phase conjugate mixers 8, a four-way power combiner 6, a four-way power divider 9, a local oscillator source 10 and a receiver 7.

[0027] Antenna unit 1 is working at the center frequency f RF =5GHz microstrip patch, the spacing between four antenna elements 1 is d=0.5λ, where λ=c / f RF , c is the speed of light, and the time modulation period is T p =100KHz, the frequency of the intrinsic signal generated by the local oscillator source is f LO = 2f RF .

[0028] The following table is the working principle of this embodiment:

[0029]

[0030] Among them, t n and τ n is the normalized conduction moment and the normalized conduction d...

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Abstract

The invention discloses a three-function reconfigurable common-aperture antenna array with time-modulated phase conjugate direction backtracking, which includes M antenna units, M single-pole three-throw switches, M phase shifters, and M phase conjugate mixers. , M-way power combiner, M-way power divider, local oscillator source, receiver and switch control circuit, wherein M is a positive integer; the switch control circuit controls the periodic on-off of all single-pole three-throw switches. The single-frequency time modulation direction retrospective antenna array in the present invention adopts time modulation technology to realize the amplitude weighting of the antenna unit, which reduces the sidelobe level of the retroactive far field, and has the advantages of high precision and low cost. In addition, the present invention reduces many The antenna space requirements of an array antenna realize the multi-function, miniaturization and intelligence of the antenna system.

Description

technical field [0001] The invention belongs to the technical field of antenna engineering, in particular to a three-function reconfigurable common-aperture antenna array with time-modulated phase conjugate direction backtracking. Background technique [0002] With the rapid development of modern electronic technology and wireless electronic systems, multi-functional, high-performance, low-cost, and miniaturized antenna systems have become a focus of attention and research. The time modulation antenna is a four-dimensional antenna based on time modulation technology. The time modulation array antenna refers to introducing the time dimension into the conventional three-dimensional array antenna, and controlling each The working state of the antenna unit makes the aperture size of the antenna array change with time, that is, it has time modulation characteristics, thereby increasing the freedom of antenna array design. [0003] The time-modulated antenna array implements the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q21/00H01Q25/00H01Q23/00
Inventor 姚阿敏吴文方大纲
Owner NANJING UNIV OF SCI & TECH