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Monopole directional antenna/array directional antenna and its time division duplex communication system

A directional antenna and time-division duplexing technology, which is applied in directions such as individually powered antenna arrays, diversity/multi-antenna systems, and space transmit diversity, to achieve the effect of reducing interference

Inactive Publication Date: 2008-09-17
CHINA ACAD OF TELECOMM TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] The purpose of the present invention is to provide a single-polarization directional antenna / array directional antenna and its time-division duplex communication system, so as to overcome the difficulty in using frequency planning to avoid the interference generated when the antennas are relative in the prior art

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  • Monopole directional antenna/array directional antenna and its time division duplex communication system
  • Monopole directional antenna/array directional antenna and its time division duplex communication system
  • Monopole directional antenna/array directional antenna and its time division duplex communication system

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Embodiment Construction

[0021] The present invention provides a single-polarization directional antenna / array directional antenna and its time division duplex communication system. The sum of the set value or the sum of -45° and the preset value. When the directions of the two antennas are opposite and the polarization directions are the same, the polarization directions of the receiving antenna and the transmitting antenna that generate the interference signal differ by 90°, or a threshold value less than 90°, so as to form orthogonal polarization suppression.

[0022] In the prior art, a signal from a remote base station generally reaches a local base station through line-of-sight or beyond-line-of-sight propagation. The distance of line-of-sight propagation is usually tens of kilometers; for the frequency band of hundreds of MHz to several GHz used in mobile communication, the main way of line-of-sight propagation is tropospheric scattering and atmospheric waveguide in a small probability. The pr...

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Abstract

The present invention provides a single-polarization directional antenna / array directional antenna and its tdd communication system. The angle of the polarization direction of the single-polarization directional antenna and the vertical direction is the sum of 45-degree and the preset value. In one tdd communication system of the single-polarization directional antenna / array directional antenna, the angle of the polarization direction of the antenna and the vertical direction is the sum of the 45-degree and the preset value, the angle of the second antenna which direction is fully opposite to the first antenna and the polarization direction of the first antenna in the first antenna positive cover range is 90-degree; the antenna of the system is a single-polarization directional antenna / array directional antenna. The polarization direction of the receiving antenna and the emitting antenna generating interference signal differs by 90-degree or closes to 90-degree, the orthogonal polarization inhibition is formed, greatly reducing the interference.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a single-polarization directional antenna / array directional antenna and a time-division duplex communication system thereof. Background technique [0002] The radio frequency signal output by the radio transmitter is sent to the antenna through the feeder, and is radiated by the antenna in the form of electromagnetic waves. After the electromagnetic wave arrives at the receiving location, it is received by the antenna at the receiving end and sent to the radio receiver through the feeder. It can be seen that the antenna is an important radio device for transmitting and receiving electromagnetic waves, and there is no radio communication without the antenna. [0003] In a mobile communication network, each deployed base station has a single or multiple antennas. The signal-carrying radio waves emitted by these antennas can cause interference between base stations. Especially i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q21/06H04B7/04
Inventor 蔡月民孙长果王映民
Owner CHINA ACAD OF TELECOMM TECH
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