Symmetrical multichannel power division phase shifter of electro-governing antenna

Abstract

The invention discloses a symmetrical multichannel power division phase shifter of an electro-governing antenna, comprising an arched phase shifting PCB (printed circuit board), wherein N concentric arcs are distributed on the arched phase shifting PCB evenly; two ends of each arc extend to the peripheral regions of the arched phase shifting PCB and 2N input / output ports which are correspondingly connected with unit oscillators of the electro-governing antenna in a one-to-one mode are formed; the centers of the concentric arcs are provided with one feed source impedance transforming line connected with a feed source respectively towards to the peripheral directions; and the top surface of the arced phase shifting PCB is provided with one rotary slip sheet which is coupled with the arc and can rotate around the arced centers. Multiple equal-radian concentric arced structures are adopted, thus solving the problem that multiple channels in a traditional phase shifter are difficult to realize; and due to the equal power allocation at each port and the large phase shifting range, the high inclination angle of main beams can be dipped downwards. The symmetrical multichannel power division phase shifter with good performances can be applied to the communication industry.

Description

technical field [0001] The invention relates to an electronically adjustable antenna component, in particular to a symmetrical multi-channel power division phase shifter for an electrically adjustable antenna. Background technique [0002] The electronically adjustable antenna refers to a mobile antenna that electronically adjusts the downtilt angle. By changing the phase of the collinear array antenna oscillator, changing the amplitude of the vertical component and the horizontal component, and changing the field strength of the composite component, the vertical directivity of the antenna can be improved. The graph tilts down. Electrically adjustable antennas are widely used in mobile communication systems and are an important part of base stations. With the development of the communication industry, the number of base stations is increasing, the interference between base stations is becoming more and more serious, and the network optimization environment is becoming more a...

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Problems solved by technology

[0005] (2) The high gain of the electric adjustable antenna can be achieved by increasing the number of unit oscillators, but a problem that will arise after increasing the number of units is that the ports of the power division phase shifter do not match the number of unit oscillators, so multi-port power division shifting is required Phase device

[0008] However, the existing power divider phase shifter can only meet the bandwidth requirements of 4 channels, and cannot connect more unit oscillators (cannot meet the high gain requirements); in addition, it cannot guarantee the equal power distribution of each port in terms of power distribution, which may cause The electronically adjustable antenna pattern is distorted; and the phase difference range between the antenna oscillator and the antenna port is not large enough to achieve a large downtilt angle of the main beam

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