Ultra-small +/-45 degree dual-polarization artificial dielectric lens antenna

Abstract

The invention relates to the field of base station antennas, and particularly relates to an ultra-small + / -45 degree dual-polarization artificial dielectric lens antenna which comprises an antenna unit. The antenna unit adopts a + / -45 degree dual-polarization antenna, and the + / -45 degree dual-polarization antenna comprises a + 45 degree dipole antenna, a -45 degree dipole antenna, a metal bottomplate and a radio frequency jumper wire with a coaxial head; and the + 45 degree dipole antenna and the -45 degree dipole antenna are concentrically overlapped and are fixed on the metal bottom plate,and the radio frequency jumper wire with the coaxial head is welded. The + / -45 degree centroid overlapped dipoles are used to replace an existing vertical / horizontal dipole to serve as a feed sourceof an artificial dielectric cylindrical lens. A size and weight of the lens antenna are reduced by about two thirds to three fourths, the same performance of the vertical / horizontal lens antenna is reserved, and meanwhile the ultra-miniaturization of the lens antenna is achieved.

Description

technical field [0001] The invention relates to the field of base station antennas, in particular to an ultra-miniature + / -45° dual-polarization artificial dielectric lens antenna. Background technique [0002] The artificial dielectric lens antenna is a new type of antenna that has appeared in the mobile communication base station antenna market in recent years. In particular, compared with the traditional plate antenna, the artificial dielectric cylindrical lens antenna has light weight, low loss, energy saving and environmental protection, no need for electric adjustment mechanism to obtain high gain and wide vertical lobe width, so that it can cover a large area, thereby reducing operation and new base stations, Outstanding advantages such as cost reduction and efficiency increase. However, in practice, compared with the traditional plate antenna, it still appears to be too large in shape, which affects market promotion. Therefore, while retaining the performance advan...

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Problems solved by technology

[0003] Chinese patent document CN110518353A discloses a kind of miniaturized dielectric cylindrical lens multi-beam antenna, including a dual-polarized lens single-beam unit, which includes a vertical lens single-beam unit and a horizontal lens single-beam unit; a vertical lens single-beam unit and a horizontal lens single-beam unit The units are arranged in the vertical direction; the vertical lens single-beam unit includes a cylindrical lens and a vertically polarized dipole with a reflector; the phase center of the vertically polarized dipole is placed at the focus of the ring line outside the cylindrical lens; the vertically polarized The polarization direction of the dipole is parallel to the axis of the cylindrical lens; the structure of the single-beam unit of the horizontal lens is the same as that of the single-beam unit of the vertical lens, and its axis is set along the horizontal direction. , which expands the radiation coverage area of ​​traditional base station antennas, but the volume of the invention can still be further reduced. The vertical / horizontal lens single-beam unit used in this patent takes up a lot of space, and this defect greatly affects market promotion.

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