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Planar Broadband Dual Antenna System for Mobile Terminals

A mobile terminal and broadband technology, applied in the field of multi-antenna design of mobile terminals, can solve the problem of narrow operating frequency band of dual-antenna system, and achieve the effects of easy mass production, low mutual coupling and compact structure

Active Publication Date: 2015-10-28
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the operating frequency band of this dual-antenna system is narrow, which can only meet the application of UMTS and 2.4-GHz WLAN frequency band

Method used

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  • Planar Broadband Dual Antenna System for Mobile Terminals
  • Planar Broadband Dual Antenna System for Mobile Terminals
  • Planar Broadband Dual Antenna System for Mobile Terminals

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with drawings and embodiments.

[0036] The present invention proposes a planar broadband dual-antenna system for a mobile terminal, which realizes an antenna structure with low cost, easy integration, small size and broadband / multi-band operation, such as Figure 1-Figure 4 shown. The entire dual-antenna system structure is printed on both sides of the dielectric board 1, including the metal floor 2, antenna unit a (consisting of branches 5, 7, 9, 11), antenna unit b (consisting of branches 6, 8, 10, 12 Composition), microstrip feeder 3 and microstrip feeder 4, the metal floor 2 is the metal that does not contain antenna unit a, antenna unit b, microstrip feeder 3 and microstrip feeder 4 on both sides of the dielectric board 1 It is used to simulate other metal parts in the mobile terminal of the mobile communication system except the antenna. Antenna unit a, antenna unit b, microstrip feeder 3 and ...

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Abstract

The invention discloses a plane-type broadband double-antenna system for a mobile terminal, and belongs to the field of mobile terminal multi-antenna design. The plane-type broadband double-antenna system is characterized by being composed of a left antenna unit and a right antenna unit both of which are symmetrical about the longitudinal axis of a dielectric slab and respectively comprise an optimized F-shaped stimulation branch and an optimized terrestrial branch, wherein each F-shaped stimulation branch produces a resonance frequency band, a plurality of reverse L-shaped terrestrial branches can reduce cross coupling between the antennas while producing another resonance frequency band, and then the characteristic of low cross coupling inside a broadband is achieved. The plane-type broadband double-antenna system has the advantages of being low in return loss in the broadband, low in cross coupling in the broadband, small in size and suitable for a double-antenna structure of the small mobile terminal.

Description

technical field [0001] The invention belongs to the field of mobile terminal multi-antenna design, relates to a dual-antenna system with low mutual coupling characteristics in a wide frequency band, and is suitable for realizing multi-input multi-output communication technology on a small mobile terminal. Background technique [0002] Mobile communication has experienced the first generation of mobile communication characterized by analog communication, and the second generation of mobile communication characterized by digital communication. Currently, mobile communication is in the third generation mobile communication stage characterized by high-speed data rate and broadband multimedia services. However, the current data transmission rate still cannot meet the needs of users. Users need higher data rates and more stable data transmission to use new wireless services, such as high-definition digital TV transmission, real-time high-definition video transmission, online onlin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/38H01Q1/52H01Q1/48H01Q21/28
Inventor 杜正伟王岩
Owner TSINGHUA UNIV