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Polarization diversity PHS communication system omnidirectional intelligent antenna

A polarization diversity and smart antenna technology, applied in diversity/multi-antenna systems, antennas, antenna arrays, etc., can solve the problems of insignificant increase in effective coverage of base stations, asymmetry between uplink and downlink, and duplex tower-top amplifiers. Unexpected effects and other problems, to achieve the effect of omitting hardware devices, increasing gain, and omitting channel calibration

Inactive Publication Date: 2007-09-05
XIAN HAITIAN ANTENNA TECH CO LTD
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Problems solved by technology

However, due to the limitation of the degree of improvement of the "low noise amplifier", the system noise can only be reduced by 1~2dB. Therefore, the addition of the "duplex tower top amplifier" increases the downlink coverage, but the uplink improvement is very small, so that the base station can effectively cover The increase is not obvious, and the uplink and downlink are asymmetrical, especially for the PHS system, because the power of the mobile phone is only 10mw, and the "duplex tower mount amplifier" cannot achieve the expected effect

Method used

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  • Polarization diversity PHS communication system omnidirectional intelligent antenna
  • Polarization diversity PHS communication system omnidirectional intelligent antenna
  • Polarization diversity PHS communication system omnidirectional intelligent antenna

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Embodiment Construction

[0023] Further illustrate structure and effect of the present invention below with reference to accompanying drawing

[0024] With reference to Fig. 1, the present invention is made up of following five parts:

[0025] ①Array antenna 5, 6

[0026] The array antenna is a dual-polarized sector six-array directional antenna composed of three-sided ±45° polarized elements, in which:

[0027] The three array directional antennas 5 in the -45° polarized sector are used bidirectionally, and transmit the amplified signal downlink and receive the uplink signal in a time-division sequence;

[0028] Three array directional antennas 6 in the +45° polarized sector are used to receive uplink signals.

[0029] ② Amplitude and phase controller 1

[0030] The amplitude and phase controller completes the amplitude and phase control of the uplink and downlink signals. Since the present invention adopts the combination of three-sided sector dual-polarized six-array antennas to form receiving ...

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Abstract

This invention refers to polarization diversity omnidirection intelligent antenna for personal access phone system, which contains three 45 degree polarization sector six array antenna, complex controller and power amplifier, wherein the three 45 degree polarization sector six array antenna receive and transmit up and down signal, then controlling amplitude and phase by complex controller to form the omnidirection covering. Said invention can update the 10mw base station to 50mw one.

Description

technical field [0001] The invention relates to a base station antenna, in particular to a polarization diversity omnidirectional smart antenna applied to a PHS communication system base station. Background technique [0002] With the rapid development of global mobile communication services, the number of users is increasing and the types of services are becoming more and more diversified. Therefore, frequency resources have become the primary problem to solve the bottleneck of communication development. At present, there are two technical means to solve this problem. One means is to optimize the mobile network by increasing the spectrum bandwidth and the number of base stations and cells to improve network coverage and capacity. However, the investment is huge and the interference problem is also more prominent. Moreover, the extended frequency resources are very limited. The second method is to expand frequency resources through smart antenna technology. This method is a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/02H01Q21/00
Inventor 肖良勇宗瑞良王西昌沈宗珍
Owner XIAN HAITIAN ANTENNA TECH CO LTD
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