Long term evolution (LTE) double-frequency high-grain omnidirectional antenna

Abstract

The invention discloses a long term evolution (LTE) double-frequency high-grain omnidirectional antenna, mainly overcoming the defects of narrow bandwidth and low grain of a frequency range used by the existing omnidirectional antenna. The omnidirectional antenna comprises n radiation oscillators, two matching networks and a hollow external conductor, wherein each radiation oscillator comprises an upper radiator (1) and a lower radiator (2); the upper radiator (1) and the lower radiator (2) are connected by the annular medium sleeve (3) of epoxy medium; a metal short circuit device (4) penetrates through the middle of the annular medium sleeve (3); one side of the annular medium sleeve (3) is welded with a first feeding coaxial line (7) to form an broadband independent feeding radiation unit of which the frequency band is 1880-2600MHz; and an upper matching network (17) and a lower matching network (18) are respectively connected to the middle end and the bottom end of a hollow external conductor (6) to realize antenna input impendence matching and direct-current earthing. The long term evolution (LTE) double-frequency high-grain omnidirectional antenna has the advantages of simple structure and high wide double-frequency gain and can be used for broadband mobile communication network systems.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to an LTE dual-frequency high-gain omnidirectional antenna array, which can be used in mobile communication network systems with frequency ranges of 1880MHz-1920MHz and 2500MHz-2575MHz. Background technique [0002] With the large-scale deployment of the TD-SCDMA network, its performance and services have been well demonstrated, the network is becoming more and more mature, and the conditions for starting the research of the next generation mobile communication technology are also met. TD-LTE focuses on high-speed data services and has high requirements for coverage and communication quality. During the introduction of the network in the early stage, the electromagnetic environment faced by the system is becoming increasingly complex. In order to reduce the mutual interference between different systems, the new network system requires the type of new requirements were raised. Sinc...

AI Technical Summary

Problems solved by technology

In the past, omnidirectional antennas had relatively narrow bandwidth and relatively large size and volume. Different communication network systems had to design antennas independently, and the systems were not compatible. Some communication product systems were integrated due to the use of frequency combiners, which was not easy to install. , which increases the cost

At present, some omnidirectional antennas use series feed, but this kind of antenna has low gain, complex structure, high processing cost, and the antenna's pattern is not round enough, which cannot fully meet the needs of existing mobile communications for network coverage and communication. Development and applications with high quality requirements

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