Adjustable phase shifter and antenna with same

Abstract

The invention relates to an adjustable phase shifter. The adjustable phase shifter comprises a first circuit board, a first rotating member, a second circuit board, a second rotating member and a rotary shaft, wherein the first circuit board comprises a first substrate, first circular-arc conducting wires and a first conductive ring; the first rotating member comprises a second conductive ring and first conductive arms electrically connected with the second conductive ring; the second conductive ring is rotatably connected to the first conductive ring; all the first conductive arms are connected with all the first circular-arc conducting wires in a sliding manner; the second circuit board comprises a second substrate, second circular-arc conducting wires and a third conductive ring; the second rotating member comprises a fourth conductive ring and second conductive arms electrically connected with the fourth conductive ring; the fourth conductive ring is rotatably connected to the third conductive ring; all the second conductive arms are connected with all the second circular-arc conducting wires in a sliding manner; the rotary shaft penetrates through the first circuit board and the second circuit board; and the two ends of the rotary shaft are respectively fixed at the first rotating member and the second rotating member. According to the adjustable phase shifter, the dual polarization is realized in a manner that the access lengths of the first and second circular-arc conducting wires are simultaneously changed by the two rotating members. Furthermore, the invention also provides an antenna comprising the adjustable phase shifter.

Description

technical field [0001] The invention relates to an antenna component, in particular to an adjustable phase shifter and an antenna with the adjustable phase shifter. Background technique [0002] In a mobile communication system, due to the need for coverage or network optimization, the elevation beam pointing of the base station antenna needs to be adjusted. At present, there are mainly two methods for realizing the pitch angle of the antenna in the industry: mechanical downtilt and electrical downtilt. The disadvantage of mechanical downtilt is that when the downtilt angle exceeds the vertical half-power beam width, the horizontal beam coverage of the base station antenna will be deformed, affecting the coverage control of the sector. The electrical downtilt can be realized by an adjustable phase shifter. Its working principle is to adjust the downtilt angle of the antenna beam by changing the phase distribution of each radiating unit of the array antenna. Not only can the...

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Problems solved by technology

[0003] However, the existing electric downtilt adjustable phase shifter can only support one polarization of the base station antenna. In actual use, two adjustable phase shifters must be used to realize the dual polarization function of the electric adjustable antenna, resulting in Hood height increases, volume increases

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