Antenna system with enhanced inter-sector interference mitigation

An antenna system and antenna technology, applied in diversity/multi-antenna systems, radio transmission systems, transmission systems, etc., can solve the problems of expensive deployment and maintenance, not suitable for accommodating multiple arrays and multiple bands, etc.

Inactive Publication Date: 2016-10-26
QUINTEL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this solution may not be suitable for accommodating multiple arrays and thus supporting multiple spectral bands, which is a desired requirement for base station antennas
Such variable beamwidt

Method used

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  • Antenna system with enhanced inter-sector interference mitigation
  • Antenna system with enhanced inter-sector interference mitigation
  • Antenna system with enhanced inter-sector interference mitigation

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Embodiment Construction

[0015] This disclosure describes a base station antenna solution that controls the azimuth radiation pattern roll-off rate and in particular the front side ratio (FSR) when deployed at a sectorized base station site. In one example, the present disclosure includes the use of two identical conventional directional dual-polarized base station sector antennas, facing the same direction or azimuth, and which are positioned nominally horizontally at an odd number of half-wavelengths apart, where , the co-polarized ports of the antennas are co-oriented together for connection to the base station. The resulting radiation pattern is an interferometric one, i.e. has multiple grating lobes and nulls, but creates a wide angle radiation pattern null specifically on the broad side of the antenna, i.e. the line of sight in the horizontal plane relative to the antenna At about + / -90 degrees of (boresight), which is used to reduce FSR and thus reduce inter-sector co-channel interference when ...

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Abstract

In one example, an antenna system includes a radio base station for transmitting an RF signal via a transmission port, an RF splitting means for receiving the RF signal from the radio base station and for splitting the RF signal into two component signals, and at least two antennas separated by a distance greater than one wavelength and connected to the RF splitting means for transmitting the respective component signals such that an inferometric radiation gain pattern is created. The radio base station communicates with at least one mobile terminal via a dispersive multi-path radio channel where an angular spread of RF energy between the at least two antennas and the at least one mobile terminal causes nulls of the inferometric radiation pattern across a range of angles to be reduced.

Description

technical field [0001] The present disclosure relates generally to antenna systems, and more particularly to base station antenna systems that control azimuth radiation pattern roll-off rates when deployed at a sectorized base station site. Background technique [0002] A cellular base station site is typically designed and deployed with three sectors arranged to serve different azimuth angles, eg, each sector serves an angular range of 120 degrees from the cell site location. Each sector consists of antennas with an azimuthal radiation pattern defining the sector coverage footprint. The azimuth radiation pattern of a base station sector antenna is generally optimal at about 65 degrees (+ / - 3dB beamwidth), as this provides sufficient gain and multiplicity in a network or cluster of stations serving a cellular network area. Efficient three-sector site tessellation of sites. [0003] Most mobile data cellular network access technologies including High Speed ​​Packet Access (...

Claims

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Application Information

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IPC IPC(8): H04M1/00
CPCH04B7/0413H04B7/0615H04B7/0617H04B7/0671H04B7/10
Inventor D.E.巴克L.巴姆福德P.C.T.宋B.欧文
Owner QUINTEL TECH
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