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Dielectric phase shifter and base station antenna

A phase shifter and medium technology, applied in antennas, antenna parts, antenna supports/installation devices, etc., can solve the problems of large volume, complex matching design, high difficulty in structural process realization, and achieve small size and shortened impedance matching. , the effect of simple structure

Inactive Publication Date: 2020-06-16
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the shortcomings of the existing dielectric phase shifter, such as large volume, complex matching design, and high difficulty in structural process implementation, the application of the phase shifter is limited to a certain extent.

Method used

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  • Dielectric phase shifter and base station antenna
  • Dielectric phase shifter and base station antenna
  • Dielectric phase shifter and base station antenna

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] like Figure 1-3 As shown, a 1-in 5-out dielectric phase shifter 10 in the form of a serial feed is provided. The dielectric phase shifter 10 includes a cavity 450 and a phase shifter body 20 disposed inside the cavity 450 .

[0028] like figure 2 and 3 As shown, the phase-shifting body 20 includes a phase-shifting circuit 200 and a sliding dielectric plate 100, wherein the phase-shifting circuit 200 and the sliding dielectric plate 100 are both built in the cavity 450, and the sliding dielectric plate 100 is slidably installed in the cavity 450 and Arranged in parallel with the phase-shifting circuit 200, the sliding dielectric plate 100 includes a dielectric plate body and impedance matching parts arranged at both ends of the dielectric plate body. The length of the impedance matching part is a quarter wavelength. where the wavelength λ g =u / ν, the unit of the propagation speed u in the formula is m / s, the propagation speed of the electromagnetic wave in the air i...

Embodiment 2

[0053] like Figure 4 As shown, a 1-into-5-out phase shifter body 50 in the form of parallel feeding is provided, wherein the port 544 is a signal input port, and the dielectric plate main body 510 and the impedance matching part 520 slide on the transmission line 530, so that the port 541, The phases of 542, 545, and 546 change linearly, and the line where port 543 is located is always located in the medium, and the phase does not change.

Embodiment 3

[0055] like Figure 5 As shown, a 1-in 7-out phase shifter body 30 in the form of a serial feed is provided, wherein the port 345 is a signal input port, and the dielectric plate main body 310 and the impedance matching part 320 slide on the transmission line 330, so that the ports 341, 342 , 343, 346, 347, 348 The phase changes linearly, and the line where the port 344 is located is always located in the medium, and the phase does not change.

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PUM

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Abstract

The invention belongs to the technical field of mobile communication base station antennas and relates to a dielectric phase shifter and a base station antenna provided with the same. The dielectric phase shifter comprises a cavity, a phase shifting circuit arranged in the cavity and a sliding dielectric plate which is slidably installed in the cavity and is parallel to the phase shifting circuit;the sliding dielectric plate comprises a dielectric plate main body and impedance matching parts arranged at the two ends of the dielectric plate main body; and the length of each impedance matchingpart is one quarter of a wavelength. Compared with the prior art, the dielectric phase shifter provided by the technical schemes of the embodiment of the invention has the advantages that the impedance matching parts of the sliding dielectric plate are adopted for impedance matching. The length of each impedance matching part is one quarter of a wavelength, so that the length of the sliding dielectric plate is greatly shortened while impedance matching is ensured, and therefore, the dielectric phase shifter is simpler in structure and smaller in size.

Description

technical field [0001] The present application relates to the technical field of mobile communication base station antennas, in particular to a dielectric phase shifter and a base station antenna on which it is installed. Background technique [0002] With the development of communication technology, the radiation of mechanical downtilt antenna has its own inherent defects, and the application of electric downtilt antenna is becoming more and more popular. The performance of the antenna affects the coverage capability of the network. [0003] The electric antenna phase shifter in the prior art can basically be divided into two implementation methods, namely changing the electrical length of the transmission line and changing the dielectric constant of the transmission line, the latter being called a dielectric phase shifter. Since the dielectric phase shifter does not change the transmission line itself, it has the characteristics of small design tolerance sensitivity, smal...

Claims

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Application Information

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IPC IPC(8): H01P1/18H01Q3/32H01Q1/24
CPCH01P1/18H01Q1/246H01Q3/32H01Q1/24
Inventor 刘亮康玉龙张昊
Owner ZTE CORP