Adjustable multi-band antenna system

A multi-frequency antenna and adjustable technology, which is applied in the direction of antenna, antenna support/installation device, and device that enables the antenna to work in different bands at the same time, can solve the problem of small antenna space, small mobile phone antenna space, and unfavorable antenna of metal structural parts. design and other issues to achieve the effect of wide bandwidth and multiple frequency bands

Inactive Publication Date: 2015-04-01
SHANGHAI AMPHENOL AIRWAVE COMM ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, due to the complexity of functions such as mobile phone terminals, the space for mobile phone antennas is getting smaller and smaller. Therefore, based on the premise of being responsible for the small space in the environment, debugging an antenna covering the frequency bands of 704-960Mhz and 1710-2700Mhz also brings challenges to the antenna design. difficulty
[0003] In addition, portable terminal products with metal texture are favored by consumers, but too many metal structural parts are not conducive to antenna design
Moreover, based on the requirements of modeling, the space of the antenna is getting smaller and smaller, and the environment around the antenna is becoming more and more complicated.
Therefore, in a limited space and complex environment, the integration of metal structural parts, simultaneous consideration of user experience, and multi-frequency broadband antennas are required, which poses challenges to antenna design.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] An adjustable multi-frequency antenna system is suitable for a mobile terminal with a metal frame structure. The antenna system includes a metal frame, a PCB board and an antenna part; the PCB board is a general printed circuit board (Printed circuit board).

[0032] Such as figure 1 As shown, the metal frame includes a first bottom frame 102, a first side frame 103, a second side frame 104, a top frame 105, a third side frame 106, a fourth side frame 107 and a second bottom frame 108; the first bottom frame 102, the first side frame 103, the second side frame 104, the top frame 105, the third side frame 106, the fourth side frame 107 and the second bottom frame 108 are sequentially connected to form a first space; the first bottom frame 102 and A gap 109 is provided between the second bottom frame 108; the metal frame wraps around the mobile terminal; the first bottom frame 102 and the second bottom frame 108 correspond to the bottom of the mobile terminal. In this em...

Embodiment 2

[0053] Such as Image 6 As shown, the difference between this embodiment and Embodiment 1 is that the antenna part is not provided with the first high-frequency coupling arm 210, and this Embodiment 1 is applicable to the fact that the lengths of the first bottom frame 102 and the first side frame 103 meet the requirements of high The case of frequency parasitic arm requirements. Other technical features of this embodiment are the same as those of Embodiment 1, and will not be repeated here.

Embodiment 3

[0055] Such as Figure 7 As shown, the difference between this embodiment and Embodiment 1 is that the antenna part includes a second high-frequency coupling arm 212 and a second coupling point 211 , replacing the first high-frequency coupling arm 210 in Embodiment 1. The second high-frequency coupling arm 212 is arranged in the same plane as the feeder trace part, and the second coupling site 211 is arranged in the PCB board; the second high-frequency coupling arm 212 is connected with the second coupling site 211, and is connected with the second coupling site 211 Corresponding to the first high-frequency branch 203 . The second high-frequency coupling arm 212 in this embodiment is used as a high-frequency parasitic arm for generating the required high-frequency resonance. Other technical features of this embodiment are the same as those of Embodiment 1, and will not be repeated here.

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Abstract

The invention discloses an adjustable multi-band antenna system which is suitable for mobile terminals with metal frame structures. The adjustable multi-band antenna system comprises a metal frame, a PCB and an antenna part. According to the adjustable multi-band antenna system, the metal frame is designed as one part of an aerial radiation body, a clearance is formed in the metal frame, a low-frequency branch is arranged to be combined with the metal frame to generate low-frequency resonance oscillation, and a high-frequency branch is arranged for generating high-frequency resonance oscillation. An IFA mode is adopted by the adjustable multi-band antenna system, the metal frame is used for achieving the ground point supporting section of the IFA antenna, and a low-frequency coupling part and a high-frequency coupling part can be added additionally according to needs. The adjustable multi-band antenna system has the advantages that the clearance of the metal frame is formed in the bottom, the collision on the clearance can be avoided to the greatest extent in an actual using process of a user, and the phenomenon that when the antenna is held by the hand performance is poor is avoided. The working frequency band of the adjustable multi-band antenna system is 704Mhz to 960Mhz and 1710Mhz to 2700Mhz, and multiple frequency broadband can be achieved. Compared with a traditional general antenna, the adjustable multi-band antenna system has the advantages of being multiple in frequency band and wide in bandwidth.

Description

technical field [0001] The invention belongs to the technical field of antennas, and in particular relates to an adjustable multi-frequency antenna system. Background technique [0002] Mobile terminal antenna multi-frequency broadband has always been the development direction of mobile communication, especially for portable mobile terminals. 2170Mhz. On the other hand, with the application of LTE technology, in addition to the above frequency bands, LTE700MHZ is also included, so the bandwidth of low frequency is 700Mhz-960Mhz. Some also include high-band LTE2.3GHZ and LTE2.5GHZ, so the high-frequency bandwidth is 2500Mhz-2700Mhz. In addition, due to the complexity of functions such as mobile phone terminals, the space for mobile phone antennas is getting smaller and smaller. Therefore, based on the premise of being responsible for the small space in the environment, debugging an antenna covering the 704-960Mhz and 1710-2700Mhz frequency bands also brings challenges to th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q5/20H01Q1/24H01Q5/10H01Q5/28H01Q5/307H01Q5/385H01Q5/392
Inventor 董孩李
Owner SHANGHAI AMPHENOL AIRWAVE COMM ELECTRONICS CO LTD
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