Differential feed dual-polarized oscillator assembly, oscillator unit, and oscillator antenna

A differential feeding, dual-polarization technology, applied to antennas, electrical components, antenna supports/installation devices, etc., can solve the problems of inconsistent impedance matching, heavy antenna array weight, and increased antenna array processing and assembly complexity.

Active Publication Date: 2017-12-29
SHANGHAI AMPHENOL AIRWAVE COMM ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of large-scale antenna arrays, especially in 5G low-frequency bands (such as 3.3-3.6GHz, 4.8-5GHz proposed by the Ministry of Industry and Information Technology), will significantly increase the complexity of antenna array processing and assembly
[0003] At present, there are mainly two forms of base station antenna oscillators, die-casting oscillators and PCB oscillators, both of which have their own advantages and disadvantages: die-casting oscillators are integrally formed and have a high degree of integration, but when used in large-scale arrays, the weight of the antenna array is relatively large; PCB The vibrator is relatively light in weight, but requires more assembly processes

Method used

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  • Differential feed dual-polarized oscillator assembly, oscillator unit, and oscillator antenna
  • Differential feed dual-polarized oscillator assembly, oscillator unit, and oscillator antenna
  • Differential feed dual-polarized oscillator assembly, oscillator unit, and oscillator antenna

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] This example provides a differentially fed dual-polarization dipole component, which has the effect of broadband high gain, high cross polarization ratio, high isolation, and high consistency of the two polarization patterns, and is especially suitable for 5G large-scale antenna arrays Of course, it can also be used in other communication frequency bands. Moreover, the structure is simple and beautiful, and it is easy to realize engineering. It is the same as the existing technology, suitable for mass production, reduces production costs, and has excellent electrical performance indicators.

[0045] Such as figure 1 As shown, the differentially fed dual-polarized vibrator assembly in this example includes a radiator 1 and a pair of balun support arms 2 orthogonally connected to the radiator 1 for differential double feeding; the oscillator assembly in this example uses a PCB printed circuit board made, such as figure 2 As shown, the radiator 1 of this example can be ...

Embodiment 2

[0054] Based on the first embodiment, the radiator 1 and the balun support arm 2 of this example are integrally injection molded, and then the feeding wire and the radiator 1 are engraved with LDS technology. In addition to obtaining the electrical performance advantages in the first embodiment, this example also has The advantages in terms of technology have the following advantages:

[0055] 1. Light weight, high production consistency. By adopting LDS technology on injection-molded plastic parts (or other non-metallic materials), the integrated LDS antenna realized by radium-engraving metal radiation patterns is lighter in weight and lower in processing cost than the traditional integrated die-casting vibrator; Compared with the PCB vibrator, the assembly cost is low, the surface accuracy is good, the deformation is small, the production consistency is good, and the efficiency is high.

[0056] 2. Less solder joints. The integrated LDS antenna is only laser-engraved on th...

Embodiment 3

[0062] Based on Embodiment 1 or Embodiment 2, this example provides a differentially fed dual-polarized oscillator unit, including a power distribution board 3 and the oscillator assembly described in Embodiment 1 or Embodiment 2, such as Figure 14 As shown, the upper surface of the power distribution board 3 is provided with microstrip lines 31 in the diagonal direction, and the upper and lower diagonal microstrip lines 31 are symmetrical up and down, and the two diagonal microstrip lines 31 form a set of differential feeders. The bottom of the support arm 2 is set on the upper surface of the power distribution board 3 and is connected through a corresponding differential feeder.

[0063] The four microstrip lines 31 have the same characteristics, the same length and width, and are respectively connected to the differential feeders on the balun support arm 2 by corresponding welding. The ends of the microstrip lines 31 are provided with SMA or other types of blind mating conn...

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PUM

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Abstract

A differential feed dual-polarized oscillator assembly comprises a radiator and a pair of balun support arms orthogonally connected to the radiator in a differential double-feed way. The radiator comprises two pairs of oscillator arms orthogonal to each other at 45 degrees and two orthogonal center of the two pairs of oscillator arms is provided with a cross-shaped short circuit plate. The front of each balun support arm is provided with a mirror-symmetrical microstrip balun along the center. The mirror symmetrical microstrip balun forms a group of differential double-feed lines. The back surface of each balun support arm is provided with a mirror-symmetrical grounding metal layer along the center. The oscillator arms and the short circuit plate are supported on the tops of the balun support arms. The oscillator arms are connected to the grounding metal layer. The short circuit plate is connected with the microstrip balun. Differentially doubly-feed is performed on the radiator so that the current distribution on the surface of the oscillator arms tends to be consistent. A directional diagram has good convergence, and high isolation, a high cross-polarization ratio and good impedance bandwidth are obtained. In addition, each pair of differential feed line terminal is subjected to short circuit and two polarized differential feed lines are subjected to crossed short circuit so that two polarization has a high degree of similarity.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a differentially fed dual-polarized dipole assembly, dipole unit and dipole antenna suitable for 5G large-scale arrays. Background technique [0002] The base station antenna is the electrical bridge between the user terminal and the base station in the air in the mobile communication system. It is the most critical component in the entire antenna feeder system. The quality of the base station antenna directly affects the communication quality. With the development of 5G communication, massive MIMO is one of the key technologies of 5G. Large-scale antenna arrays will significantly improve system capacity, communication rate and bandwidth. However, the use of large-scale antenna arrays, especially in the 5G low-frequency band (such as 3.3-3.6GHz, 4.8-5GHz proposed by the Ministry of Industry and Information Technology), will significantly increase the complexity of the processing...

Claims

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Application Information

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IPC IPC(8): H01Q1/12H01Q1/36H01Q1/50H01Q19/10
CPCH01Q1/12H01Q1/36H01Q1/50H01Q19/104
Inventor 张凯
Owner SHANGHAI AMPHENOL AIRWAVE COMM ELECTRONICS
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