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Broadband cavity phase shifter

A broadband cavity and phase shifter technology, which is applied to waveguide-type devices, electrical components, circuits, etc., can solve the problem of large changes in the power of the transmission line affecting the linearity of the phase shifter and the linearity of the port.

Pending Publication Date: 2019-05-14
SOUTHEAST UNIV +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to achieve a large amount of shifting, the TN junction transmission line of the PCB circuit board will have multiple bends, and the mutual coupling between the transmission lines will seriously affect the linearity of the shifting amount of the phase shifter and the comparison of the power of each port during the sliding process. Big change

Method used

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0019] refer to figure 1 , The cavity phase shifter proposed by the present invention includes a metal cavity 1, a pull rod 2, an end cover 3, a coaxial feeder 4, a PCB circuit board 5 and two upper and lower sliding dielectric plates 6. The upper and lower sliding dielectric boards 6 are placed on the front and back surfaces of the PCB circuit board 5 , the sliding dielectric board 6 is connected to the tie rod 2 and placed in the metal cavity 1 , and the end caps 3 are placed at both ends of the opening of the metal cavity 1 .

[0020] The metal cavity 1 is made of aluminum material, and its structure is to close the openings at both ends on four sides, and the two ends are punched with holes 11 matching the end cap 3, and there are metal bosses 12 on the side rear and side front, and the metal bosses are covered by two The two partitions are divided...

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PUM

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Abstract

The invention relates to the field of mobile communication base station antennas, and discloses a base station antenna broadband cavity phase shifter. The base station antenna broadband cavity phase shifter comprises a metal cavity, a pull rod, an end cover, a coaxial feeder, a PCB circuit board and upper and lower sliding medium plates; a first metallized through hole for electrically connectingTN junction transmission lines at the same positions on both sides of the PCB circuit dielectric board and a second metallized through hole for electrically isolating two adjacent TN junction transmission lines on the PCB circuit dielectric board are processed on the PCB circuit dielectric board, the TN junction transmission lines cover the first metallized through hole, and the second metallizedthrough hole is positioned between the two adjacent TN junction transmission lines. The phase shifter provided by the invention has the advantages of stable structure, good intermodulation performance, wide operation bandwidth, stable dynamic power in the phase shifting process, high linearity of phase shifting amount and the like.

Description

technical field [0001] The invention relates to the technical field of mobile communication base station antennas, in particular to a cavity phase shifter for a base station electrically adjustable antenna. Background technique [0002] In the coverage of mobile communication networks, base station electrically adjustable antennas have gradually replaced traditional mechanical downtilt antennas due to their good electrical performance. As an important component of the electric base station antenna, the phase shifter can realize the beam scanning of the pattern by controlling the amplitude and phase between the antenna elements of the base station. Therefore, the performance of the phase shifter directly affects the electrical adjustment performance of the base station antenna. [0003] In the design of the cavity phase shifter, the impedance matching of the sliding dielectric plate is an important factor to determine the working bandwidth of the phase shifter, so the design...

Claims

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Application Information

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IPC IPC(8): H01P1/18H01Q3/32
Inventor 高迪曹振新全鑫崔晓辉
Owner SOUTHEAST UNIV
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