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Adjustable multi-band antenna system

A multi-frequency antenna and adjustable technology, applied in the direction of slot antenna, independent antenna unit combination, antenna support/installation device, etc., can solve the problems of small antenna space, small mobile phone antenna space, unfavorable antenna design, etc., to achieve frequency The effect of wide bandwidth and multiple frequency bands

Inactive Publication Date: 2013-09-11
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 applicable to 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 and figure 2 As shown, the metal frame includes a frame 102 and a bottom frame 104, the frame 102 and the bottom frame 104 enclose a first space, the two ends of the bottom frame 104 and the two ends of the frame 102 are respectively provided with a first gap 103 and a second gap. Gap 105. The metal frame wraps around the mobile terminal; the frame 102 corresponds to the sides and the top of the mobile terminal, and the bottom frame 104 corresponds to the bottom of the mobile terminal. In this embodiment, taking a general mobile phone as an example, the size of a general mobile phone is roughly 150mm×70mm, so the first space surrounded by the metal frame is set as length L1×width W1=150...

Embodiment 2

[0054] Such as Figure 7 As shown, the difference between this embodiment and Embodiment 1 is that no high-frequency coupling part is provided in this embodiment, and it is applicable to situations where LTE2500MHZ is not required. Other technical features of this embodiment are the same as those of Embodiment 1, and will not be repeated here.

Embodiment 3

[0056] Such as Figure 8 and Figure 9 As shown, the difference between this embodiment and Embodiment 1 is that: the second loop branch 206 and the third loop branch 209 are connected to the bottom frame 104 through PCB board connection, that is, the second loop branch 206 is connected to the bottom frame 104 through the first thimble 302 is connected to the first metal block 300 of the PCB board, and one end of the bottom frame 104 is connected to the first metal block 300 of the PCB board through the first elastic piece 301, thereby connecting the second loop branch 206 through the first metal block 300 It communicates with one end of the bottom frame 104; the third loop branch 209 is connected to the second metal block 303 of the PCB board through the second thimble 305, and the other end of the bottom frame 104 is connected to the second metal block of the PCB board through the second elastic piece 304. block 303 , so that the third loop branch 209 is communicated with t...

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Abstract

The invention discloses an adjustable multi-band antenna system which is applicable to a mobile terminal with a metal frame structure. The antenna system comprises a metal frame, a PCB (printed circuit board) and an antenna portion. The metal frame is designed to be one portion of an antenna radiator, a loop is formed by the metal frame and the antenna radiator together, a single-stage branch portion is used for debugging low-frequency and high-frequency resonances, and a low-frequency coupling portion and a high-frequency coupling portion can be added according to requirements of working bands. The adjustable multi-band antenna system has the advantages that gaps of the metal frame are formed at the bottom, users are avoided from touching the gaps as much as possible in actual use, and poor antenna performance is avoided during actual handholding; the working bands of the adjustable multi-band antenna system are 704MHz-960MHz and 1710MHz-2700MHz, and a multi-frequency broadband is realized; compared with traditional common antennas, the adjustable multi-band antenna system has the advantages of multiple bands and wide 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. Universal Mobile Telecommunications System (UMTS) is the current mainstream, and its frequency bandwidth is 824Mhz-960Mhz and 1710Mhz-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...

Claims

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Application Information

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IPC IPC(8): H01Q1/24H01Q1/44H01Q13/10H01Q21/30
Inventor 董孩李
Owner SHANGHAI AMPHENOL AIRWAVE COMM ELECTRONICS CO LTD
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