Multimode resonant antenna system

An antenna system, multi-mode resonance technology, applied to antennas, antenna supports/mounting devices, devices that enable antennas to work in different bands at the same time, can solve the problem of antenna failure, clearance area, and antenna design that cannot meet the PCB board And other issues

Active Publication Date: 2012-07-04
SHANGHAI AMPHENOL AIRWAVE COMM ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the deficiencies of the prior art, the present invention proposes a multi-mode resonant antenna system, which can solve the

Method used

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  • Multimode resonant antenna system
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Examples

Experimental program
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Effect test

Embodiment 1

[0097] figure 1 It is a schematic diagram of the principle of the antenna of the first embodiment of the present invention. refer to figure 1 , the antenna includes a feed end 24 , a ground end 25 , and an antenna main body; the antenna main body includes a first part 23 , a second part 22 and a third part 21 .

[0098] The first part 23 and the third part 21 are structurally symmetrical, and the first part 23 and the third part 21 are coupled to the second part 22 with a gap of a certain distance g.

[0099] Both the first part 23 and the third part 21 are composed of several radiation units with different widths / lengths. Such a structure enables the antenna system to simultaneously cover multiple frequency bands such as low frequency and high frequency.

[0100] The following theory deduces the frequency characteristics brought about by this structure:

[0101] refer to Figure 2a , two basic resonant units of multimode antennas with different lengths and widths, among ...

Embodiment 2

[0130] Figure 10 It is a schematic structural diagram of the antenna system according to the second embodiment of the present invention. As shown in FIG. 2 , a multi-mode resonant antenna system includes an antenna 200 and a PCB 100 , the antenna 200 is disposed above the PCB 100 , and the projected area of ​​the antenna 200 on the PCB 100 is a metal area.

[0131] Line A and line B are two vertical centerlines of the PCB board respectively.

[0132] The antenna 200 further includes: an antenna body, a feeding terminal 202 and a ground terminal 201 ; the antenna 200 is connected to the PCB board 100 through the ground terminal 201 .

[0133] The antenna body further includes a first part, a second part and a third part; the first part is connected to the third part through the second part; the first part is connected to the feeding terminal 202, and the third part is connected to the ground terminal 201 ; The first part and the third part are symmetrical; the feeding end 20...

Embodiment 3

[0143] Figure 11 It is a schematic structural diagram of the antenna system according to the third embodiment of the present invention. Such as Figure 11 , a multi-mode resonant antenna system includes an antenna 200 and a PCB board 100, and the antenna 200 is arranged above the PCB board 100.

[0144] The projection area of ​​the antenna 200 on the PCB 100 is a metal area.

[0145]Antenna 200 further includes: antenna main body, feeding end 202 and grounding end 201; Antenna 200 is connected with PCB board 100 through grounding end 201; Antenna main body further includes a first part, a second part and a third part; The two parts are connected to the third part; the first part is connected to the feeding end 202 , and the third part is connected to the grounding end 201 .

[0146] Line A and line B are two vertical centerlines of the PCB board respectively.

[0147] The second part is a concave structure, which includes the first radiation unit 1, the second radiation u...

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Abstract

The invention discloses a multimode resonant antenna system comprising an antenna and a PCB (Printed Circuit Board), wherein the antenna is arranged above the PCB; a projection area of the antenna on the PCB is a metal area; the antenna further comprises an antenna main body, a feed terminal and a ground terminal; the antenna is connected with the PCB through the ground terminal; the antenna body further comprises a first part, a second part and a third part; the first part is connected with the third part through the second part; the first part is connected with the feed terminal and the third part is connected with the ground terminal; at least one of the first part, the second part and the third part is composed of a plurality of radiation units with different widths/lengths; and the distance between the ground terminal and the feed terminal ranges from 10 mm to 40 mm. Compared with the prior art, the invention provides the multimode resonant antenna system which can solve the problems that the design of the antenna in the prior art cannot meet the requirement of reserving a clearance area for the antenna in the PCB of an intelligent mobile phone.

Description

technical field [0001] The invention relates to mobile phone antennas, in particular to a multi-mode resonant antenna system. [0002] Background technique [0003] An antenna is a device that uses frequency characteristics to receive and transmit signals. In recent years, the design and performance of mobile terminal antennas for wireless communication have more and more influence on the development direction of mobile communication. Especially portable mobile terminals such as mobile phones, PDA (Personal Digital Assistance), MP3 / MP4. The bandwidth characteristics of the antenna design have a significant impact on the radiation characteristics. Antennas achieve signal propagation and energy radiation based on frequency resonance. If an antenna can resonate at multiple frequencies, then the antenna will work at multiple frequencies. On the other hand, if there are multiple resonant frequencies in the antenna, designers and users can adjust the frequency and bandwidth o...

Claims

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Application Information

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IPC IPC(8): H01Q25/04H01Q1/38H01Q1/22H01Q5/10
Inventor 孙劲何其娟
Owner SHANGHAI AMPHENOL AIRWAVE COMM ELECTRONICS
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