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Electrically tilted antenna system with polarisation diversity

An antenna system, polarization diversity technology, applied in diversity/multiple antenna systems, polarization/direction diversity, antennas, etc., to solve problems such as restricting the deployment of new locations or adding antennas

Inactive Publication Date: 2009-12-16
QUINTEL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Operators of cellular radio networks are faced with the need for enhanced communication capacity, but are constrained by planning or zoning constraints, which limit the deployment of new locations or the addition of antennas to existing locations

Method used

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  • Electrically tilted antenna system with polarisation diversity
  • Electrically tilted antenna system with polarisation diversity
  • Electrically tilted antenna system with polarisation diversity

Examples

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Embodiment Construction

[0041] In this specification (unlike US nomenclature), "carrier" refers to the carrier frequency, ie the radio frequency signal on which it is modulated for telecommunication purposes, and "channel" is the channel of frequency and is practically synonymous with carrier. One or more carriers may be used by a single operator, who is a user of a base station that provides mobile telephone communication services, or by two or more operators. Multiple carriers do not have to be allocated to the same cellular radio system. Paired transmit and receive signals are denoted by TX and RX respectively with the same numerical suffix, eg TX1 and RX1 or TX2 and RX2. A numerical suffix of 1 or 2 here indicates a first or second transmit or receive carrier frequency and is associated with a first or second operator or base station. Polarization diversity transmit and receive signals are denoted by the suffix D, for example in TXD, RXD, TX1D, RX1D, etc. Uplink refers to the transmission of si...

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PUM

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Abstract

An electrically tilted antenna system with polarisation diversity has a dual polarised, tilt adjustable antenna (32). The antenna (32) has dipoles (34, 36) of two orthogonal polarisations associated with independently adjustable electrical tilt angles. The tilt angles are implemented by relative delays between corporate feed input or output signals, the delays being introduced by an antenna tilt assembly (54). Two signal feeders (F21, F22) associated with different antenna polarisations connect the antenna tilt assembly (54) to a base station filter assembly (50): the base station filter assembly 50 routes transmit signals from base stations (BS21, BS22) to different antenna polarisations via respective feeders (F21, F22) and the antenna tilt assembly (54). This assembly also divides receive signals from feeders (F21, F22) between both base stations (BS21, BS22). Each antenna polarisation is associated with transmit and receive signals of a respective base station (BS21 or BS22) and with a polarisation diversity signal of the other base station (BS22 or BS21). The antenna system may be used with two or more base stations operating with contiguous frequencies.

Description

technical field [0001] The present invention relates to an electrically tilted antenna system with polarization diversity, that is, a phased array antenna system with polarization diversity and electrical tilt capabilities. It concerns many antenna systems such as those used in telecommunications, for example for cellular mobile radio networks, commonly referred to as mobile telephone networks. Such networks include second generation (2G) mobile telephone networks implemented by cellular radio standards such as GSM and third generation (3G) mobile telephone networks implemented by cellular standards such as Universal Mobile Telephone System (UMTS). Other cellular radio standards include IS95 and WCMA2000. Background technique [0002] Operators of conventional cellular radio networks usually use their own base stations, each of which is connected to one or more antennas. In such networks, antennas are the primary factor in determining the desired coverage area, which is ty...

Claims

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Application Information

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IPC IPC(8): H04B7/10H01Q1/24H01Q3/30
CPCH01Q1/246H04B7/10H01Q3/30
Inventor P·E·哈斯克尔L·D·托马斯S·T·纽博尔德D·E·巴克
Owner QUINTEL TECH
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