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Periodic impedance modulation surface for rectangular beam forming of any pitching surface

A beamforming and pitching surface technology, applied in the field of periodic impedance modulation surface, antenna and periodic impedance modulation surface, which can solve the problems of large size/volume, difficult to implement, etc.

Active Publication Date: 2021-08-31
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
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Problems solved by technology

[0004] However, the above-mentioned existing technologies combine the optimization algorithm to adjust the amplitude and phase of the array to realize beamforming, but multi-feed sources are generally used, so a complex feed network is required, the size / volume is large and difficult to implement, and the existing technology Only the rectangular beamforming in the normal direction is realized, and the rectangular beamforming cannot be realized on any elevation plane

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  • Periodic impedance modulation surface for rectangular beam forming of any pitching surface
  • Periodic impedance modulation surface for rectangular beam forming of any pitching surface
  • Periodic impedance modulation surface for rectangular beam forming of any pitching surface

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Embodiment Construction

[0063] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0064] This embodiment provides a periodic impedance modulation surface with rectangular beamforming on any elevation plane. The top view and side view of its overall structure are as follows figure 1 As shown, the detail picture near the center part is shown as figure 2 As shown, it includes a corner-cut rectangular metal patch unit 1, a dielectric substrate 2, a metal ground plate 3 and a monopole feed 4; the corner-cut rectangular metal patch unit 1 is located on the upper surface of the dielectric substrate 2, and the metal ground plate 3 is located on the the lower surface of the dielectric substrate 2;

[0065] The overall shape of the periodic impedance modulation surface is circular, and the radius corresponds to 5 times the free space wavelength corresponding to the center frequency of 30GHz. The periodic impedance modulation surface is divid...

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Abstract

The invention discloses a periodic impedance modulation surface for rectangular beam forming of any pitching surface, and belongs to the technical field of antennas and periodic impedance modulation surfaces. According to the periodic impedance modulation surface, the periodic impedance modulation surface is applied to rectangular beam forming, compared with an existing technology combining array synthesis and algorithm, multiple feed sources and a complex feed network do not need to be adopted, only the inner core of the coaxial line needs to be prolonged to form a monopole for feeding, the structure is simple, and implementation is easy. A method has another advantage that compared with an existing method for achieving rectangular beam forming in the normal direction, rectangular beam forming can be achieved in the direction with a certain inclination angle.

Description

technical field [0001] The invention belongs to the technical field of antennas and periodic impedance modulation surfaces, and in particular relates to a periodic impedance modulation surface with rectangular beam forming on an arbitrary elevation plane. Background technique [0002] As the terminal of the wireless communication system, the antenna plays an extremely important role in mobile communication. The gain lobe of the electromagnetic wave emitted by the traditional base station antenna is generally spherical, and the lobe width is relatively wide, and the gain drops on both sides of the main radiation direction relatively gently, which causes the electromagnetic wave signals emitted by antennas with different directions to interfere with each other. Rectangular beamforming technology with a certain roll-off rate puts forward the requirement to eliminate or reduce the mutual interference of signals in the multi-beam multiplexing area. [0003] The document "Flat-To...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/48G06F30/20
CPCH01Q1/38H01Q1/48G06F30/20
Inventor 李家林汪宗林赵青
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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