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Calibration network of intelligent antenna

A smart antenna and network technology, applied to antennas, antenna arrays, diversity/multi-antenna systems, etc., can solve problems such as failure to meet system requirements, poor calibration network consistency, etc., and achieve the effect of ensuring consistency

Inactive Publication Date: 2006-09-13
MOBILE ANTENNA TECH SHENZHEN
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiencies of the above-mentioned prior art, a calibration network for smart antennas is provided to solve the problem that the current calibration network has poor consistency and cannot meet the system requirements

Method used

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  • Calibration network of intelligent antenna
  • Calibration network of intelligent antenna

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Embodiment Construction

[0019] see figure 1 and figure 2 , the calibration network of the smart antenna of the present invention includes a metal plate 1 , a metal strip 2 , a printed circuit board 3 , a joint 4 , a coaxial cable 5 and supporting structures 6 and 7 .

[0020] Among them, the metal plate 1 of the calibration network of the smart antenna in this embodiment is provided with 16 square coupling windows, 8 metal strips 2 are suspended on the metal plate 1 through the supporting structures 6 and 7, and the printed circuit board 3 is closely attached to the metal plate 1. On the lower surface of the board 1 , 9 joints 4 are respectively connected to 8 metal strips 2 and one end of the coaxial cable 5 .

[0021] Two coupling windows (not marked) under each metal strip 2 and the metal strip 2 above it, and the microstrip circuit (not marked) on the lower surface of the printed circuit board 3 constitute a directional coupler, by adjusting the two coupled The distance between the windows can...

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Abstract

This invention relates to a calibration network of an intelligent antenna including a metal plate opened with multi-set of couple windows, transmission lines above the metal plate corresponding to the couple windows, transmission lines below the metal plate and a power distributor circuit, the transmission lines above or below the plate and the corresponding windows make up of a coupler, all the branches of the power distributor are connected with the transmission lines under the metal plate, which can guarantee the consistency of the amplitudes and phases from the calibration port to the antenna port.

Description

technical field [0001] The invention relates to a smart antenna calibration network, in particular to a smart antenna calibration network suitable for mobile communication system base stations. Background technique [0002] With the development of science and technology, communication technology is changing with each passing day. Mobile communication phones have been widely used in people's daily life and study. The distance also brings great convenience to people's contact and information exchange. [0003] As one of the third-generation mobile communication standards, TD-SCDMA system requires the use of smart antennas, and calibration networks are usually used in smart antennas. In a smart antenna array composed of N array elements, the calibration network is composed of N couplers and a one-to-N power divider. N couplers couple a part of the signal from N antenna ports, and then pass through a A power splitter with sub-N synthesizes one calibration signal. In order to c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q21/00H04B7/02H04Q7/30
Inventor 侯小强
Owner MOBILE ANTENNA TECH SHENZHEN
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