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Handset diversity system based on directional antenna and handset

A directional antenna, diversity system technology, applied in diversity/multi-antenna system, space transmit diversity, telephone structure and other directions, can solve the problem of adding base stations, etc., to increase the signal propagation distance, suppress multipath fading, and improve Internet speed. Effect

Active Publication Date: 2015-11-11
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a given level of co-channel interference, capacity can be increased by reducing the cell size, but at the expense of adding additional base stations

Method used

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  • Handset diversity system based on directional antenna and handset
  • Handset diversity system based on directional antenna and handset
  • Handset diversity system based on directional antenna and handset

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The mobile phone diversity system based on directional antenna, such as figure 1 As shown, it includes a substrate 3 , four directional antenna units ( 41 , 42 , 43 , 44 ), a processor unit 2 , and a channel switching unit 1 . The four directional antenna elements are identical antenna elements. The directional pattern of the directional antenna unit has a half-power angle of 180 degrees on the equatorial plane (such as figure 1 The fan-shaped area enclosed by the four dotted lines). Four directional antenna units are distributed at four corners of the substrate 3 . The angle bisector of the half power angle of the antenna unit and the angle bisector of the substrate angle are on the same straight line. The so-called half-power angle is the angle between the main lobe and the power that drops to half (3dB) of the strongest direction (main lobe direction), for example, 90 degrees, that is, 45 degrees from the main direction to the left and right, and the power will dr...

Embodiment 2

[0032] Such as image 3 As shown, the mobile phone diversity system based on directional antennas includes a substrate 3, eight directional antenna units (41, 42, 43, 44, 45, 46, 47, 48), a processor unit 2, and a channel switching unit 1 . The eight directional antenna elements are identical antenna elements. The directivity diagram of the directional antenna unit has a half power angle of 90 degrees on the equatorial plane. Eight directional antenna units are distributed on the four corners and the long sides of the substrate 3 . Wherein the first antenna element 41, the second antenna element 42, the third antenna element 43, and the fourth antenna element 44 are located at the four corners of the substrate, and the angle bisectors of the half power angles of the antenna elements and the angle bisectors of the four corners of the substrate 3 on the same straight line. The other four antenna units are distributed at the midpoint of the edge of the substrate, wherein the ...

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Abstract

The invention provides a handset diversity system based on a directional antenna and a handset. The handset diversity system based on the directional antenna comprises a substrate, a plurality of antenna units, a channel switching unit and a processor unit. The processor unit determines the strength and the time delay of a signal by detecting the level and the phase of the signal, and then switching is conducted by the channel switching unit. The antenna units are distributed on the edge of the substrate in a way of surrounding the center of the substrate. The distribution requirement of the antenna units is that any direction in a substrate plane is required to be in a half-power angle of at least two antenna units. The system is mainly based on the directional diagram diversity principle; the plurality of antenna units are adopted to divide space into multiple sectors, and each sector is covered by at least two adjacent antenna units; and the system can effectively improve the channel capacity of a handset antenna, increase the Internet connection speed of the handset, improve the anti-interference capability, and increase the signal propagation distance.

Description

technical field [0001] The invention belongs to the technical field of wireless communication antennas, and relates to a multi-antenna system for mobile communication terminals, in particular to a directional antenna-based mobile phone diversity system and a mobile phone. Background technique [0002] People have higher and higher requirements for wireless communication systems, such as high transmission rate, low bit error rate, etc., which put forward higher requirements for antennas. Therefore, MIMO antenna systems based on miniaturized multi-band antenna units become a research hotspot. The so-called MIMO (Multiple-Input Multiple-Output) technology refers to using multiple transmitting antennas and receiving antennas at the transmitting end and receiving end respectively, so that signals are transmitted and received through multiple antennas at the transmitting end and receiving end, thereby improving communication quality. MIMO systems generally require low correlation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04M1/02H04B7/04
Inventor 周浩淼徐源梁艳武
Owner CHINA JILIANG UNIV
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