Bipolar two-beam low-side-lobe rapid-drop rectangular shaping array antenna

Abstract

The invention discloses a bipolar two-beam low-side-lobe rapid-drop rectangular shaping array antenna. The bipolar two-beam low-side-lobe rapid-drop rectangular shaping array antenna has a faster wave-beam drop speed than a single-main-lobe antenna within an ultra broadband range; the 3dB wave-beam width of the central frequency is 50 degrees; drop angles of powers from 3dB to 20dB are not larger than 20 degrees in a horizontal direction; and drop angles of powers from 3dB to 20dB are not larger than 14 degrees in a vertical direction. The provided antenna has the higher gain that the single-main-lobe antenna; and the peak gain is not less than 12.5dBic within a working band from 1.71GHz to 2.17GHz. The provided antenna has the lower full-three-dimensional spatial side-lobe level than the single-main-lobe antenna; the full-three-dimensional spatial side-lobe level is below -23.6dB within a working band. Therefore, the adjacent fan-section interference of hot-spot regions like a stadium can be reduced effectively; frequency multiplexing is realized; the communication network capacity is improved further; and the mutual interference between two wave beams is low in a vertical direction.

Description

technical field [0001] The invention belongs to the technical field of microwave antennas, in particular to a dual-polarization two-beam low-sidelobe fast-drop rectangular shaped array antenna. Background technique [0002] At present, in many hot spots where mobile communication users are densely populated, such as large venues and performing arts centers, the data traffic of mobile communication shows explosive growth when large-scale events or special events are held, and the available frequency resources are fixed and limited, so a large number of frequency multiplexing is required. To achieve the best communication capacity. Therefore, in order to meet the needs of network communication capacity, large-scale venues, performing arts centers and other communication hotspot areas generally plan more sectors for partition coverage to achieve better communication capacity requirements. [0003] At present, in order to solve the problem of partition coverage, in practice, th...

AI Technical Summary

Problems solved by technology

The problem with these array antennas is that the peak gain of the antenna is low, the 3dB to 20dB power drop angle is not fast enough, and the full three-dimensional sidelobe level is not low enough

At the same time, the current two-beam antennas have high full-space sidelobe levels. In order to further improve the frequency reuse efficiency and distribution system capacity of the mobile communication system, it is necessary to provide higher gain than the existing array antenna and a 3dB to 20dB power drop angle. Faster, full three-dimensional spatial sidelobe level lower center frequency array antenna with 3dB beamwidth at 50°

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