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Three-port multi-mode switching common-caliber antenna and array of SSPP structure based on gap

A three-port, common-aperture technology, applied in the field of communication, can solve the problems of discontinuous beam scanning angle, increased center frequency point loss, and difficulty in wide-angle scanning, etc., to achieve improved end-fire performance, increased gain, and good spatial scanning The effect of the characteristic

Pending Publication Date: 2022-04-19
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The working principle of the frequency scanning antenna is to make the phase relationship between the antenna elements or the lobe direction change with the operating frequency. The loss increases
The phase scanning antenna uses a phase shifter to control the phase of the antenna unit to realize beam scanning. The antenna system is relatively complicated, and the working mode of the antenna is limited, and the beam scanning angle is discontinuous.

Method used

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  • Three-port multi-mode switching common-caliber antenna and array of SSPP structure based on gap
  • Three-port multi-mode switching common-caliber antenna and array of SSPP structure based on gap
  • Three-port multi-mode switching common-caliber antenna and array of SSPP structure based on gap

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] like figure 1 As shown, a three-port multimode switching common-aperture antenna based on a slot-based SSPP structure provided in this embodiment includes: three SMA radio frequency connectors 1, two trapezoidal monopoles 2, tapered coplanar waveguides 3, and symmetrical SSPP Metal transmission line 4 and dielectric board 5 . Two SMA radio frequency connectors 1 are arranged on both sides of the dielectric board 5 , the SMA radio frequency connectors 1 on both sides are respectively connected to two trapezoidal monopoles 2 , and the middle SMA radio frequency connector 1 is connected to the tapered coplanar waveguide 3 .

[0047] Both the tapered coplanar waveguide 3 and the symmetrical SSPP metal transmission line 4 are arranged on the front of the dielectric plate 5 , the trapezoidal monopole 2 is arranged on the back of the dielectric plate 5 , and the tapered coplanar waveguide 3 is connected to the beginning and end of the symmetrical SSPP metal transmission line 4...

Embodiment 2

[0059] like Figure 5 In the schematic diagram of the array structure shown, the antenna elements of Embodiment 1 are formed into a 1×4 array, along the figure 1 The X-axis direction can realize the spatial scanning of the unit beam, and at the same time adjust the phase difference between the antenna units, so that the main beam of the array is consistent with the main beam of the unit, and the beam gain and directivity are enhanced.

[0060] like Figures 6a-6c In the three-dimensional pattern of the array shown, the phase difference between the two ports of the antenna unit is set to 0°, 90° and 180° respectively, and the phase difference between the antenna units is adjusted to make the array beam pointing consistent with the unit beam pointing to realize beam switching.

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Abstract

The invention provides a three-port multi-mode switching common-caliber antenna and array of a slot-based SSPP structure, and belongs to the technical field of communication. The antenna comprises an SMA radio frequency connector, a trapezoidal monopole, a gradient coplanar waveguide, a symmetric SSPP metal transmission line and a dielectric plate. The gradient coplanar waveguide and the symmetric SSPP metal transmission lines are arranged on the front surface of the dielectric plate, and the trapezoidal monopole is arranged on the back surface of the dielectric plate; the gradient coplanar waveguides are connected to the starting end and the tail end of the symmetric SSPP metal transmission line; the number of the SMA radio frequency connectors is multiple, and the multiple SMA radio frequency connectors are respectively connected with the gradient coplanar waveguide and the trapezoidal monopole. According to the antenna, coupled feeding is performed on the symmetric metal SSPP transmission line through the trapezoidal monopole, and the antenna is excited to work in multiple modes by changing the phase difference among the three feed ports, so that a directional diagram can be scanned in a three-dimensional space. The antenna has a good radiation pattern space scanning characteristic, and the radiation beam direction of the antenna continuously changes along with the continuous change of the phase difference among the three feed ports.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular, to a three-port multi-mode switching common-aperture antenna and array based on a slot-based SSPP structure, and to an artificial surface plasmon polariton (SSPPs for short) structure Multi-mode switching common-aperture antenna. Background technique [0002] With the development of antenna technology, antenna electronic scanning technology is playing an increasingly important role. At present, more phase scanning and frequency scanning are used. The working principle of the frequency scanning antenna is to make the phase relationship between the antenna elements or the lobe pointing change with the working frequency. loss increases. The phase scanning antenna uses a phase shifter to control the phase of the antenna unit to realize beam scanning. The antenna system is relatively complicated, and the working mode of the antenna is limited, and the beam scanning ang...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q25/04H01Q1/36H01Q1/50H01Q3/34H01Q1/00H01Q21/06H01Q21/00
CPCH01Q25/04H01Q1/36H01Q1/50H01Q3/34H01Q1/002H01Q21/067H01Q21/0006
Inventor 耿军平张洋州王堃
Owner SHANGHAI JIAO TONG UNIV