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Mobile phone antenna with reconfigurable directional diagram

A mobile phone antenna and pattern technology, applied to the antenna, radiation element structure, electrical components, etc., to achieve the effects of high efficiency, small SAR value, and convenient processing

Inactive Publication Date: 2013-10-09
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The radiation pattern of the antenna can be changed according to the actual communication situation: when there is no communication, the antenna works in the omnidirectional radiation state, which ensures the sensitivity of the antenna; if there is communication, the antenna works in the directional radiation state, and the main The beam is away from the human body and can reconstruct the radiation direction of the main beam. In order to ensure that the antenna’s backward signal can be received, the antenna’s backward beam also has gain, but it is relatively small

Method used

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  • Mobile phone antenna with reconfigurable directional diagram
  • Mobile phone antenna with reconfigurable directional diagram
  • Mobile phone antenna with reconfigurable directional diagram

Examples

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Effect test

Embodiment 1

[0037] An example of the directional pattern reconfigurable mobile phone antenna involved in the present invention is as figure 1 and figure 2 shown. The antenna consists of dielectric substrates (201, 202), bent passive vibrators (101, 107, 109, 115), horizontal straight passive vibrators (103, 105, 111, 113), RF-PIN switches (102, 104 , 106, 110, 112, 114), dipole excitation oscillators (108, 116), vertical parasitic oscillators (203, 204), balancer (205) and coaxial feeder (206). The side view of the antenna is as figure 2 shown, where 101 and 107 are figure 1 Right bent passive vibrator, 103 and 105 figure 1 The right straight passive oscillator, 102 and 104 are figure 1 The PF-PIN switch on the right side, 205 is a balancer, and 206 is a coaxial feeder. according to figure 1 and figure 2 As shown in the structure, as long as the appropriate size is selected, it can meet the requirements of pattern reconstruction and wide frequency impedance bandwidth.

[0038]...

Embodiment 2

[0040] Such as image 3 and Figure 4 As shown, another implementation example of the present invention is to remove the RF-PIN switch on the basis of implementation example 1. By adjusting the bending angle of the bent passive dipole and the distance between the passive dipole and the active dipole dipole, the impedance bandwidth and pattern gain of the antenna can be adjusted so that the designed antenna can meet the required communication requirements. The antenna consists of dielectric substrates (401, 403), bent passive vibrators (301, 305, 307, 311), horizontal straight passive vibrators (303, 309), RF-PIN switches (302, 304, 308, 310 ), a dipole excitation oscillator (306, 312), a vertical parasitic oscillator (404, 405), a balancer (406) and a coaxial feeder (407). according to figure 1 and figure 2 The structure shown, as long as the size is appropriate, can meet the demand for pattern reconstruction of the narrowband frequency band.

Embodiment 3

[0042] Such as Figure 5 and Figure 6 As shown, another implementation example of the present invention is to design a reconfigurable antenna with a pattern using only horizontal straight passive dipoles, dipole excitation dipoles and RF-PIN switches. The radiating element of the antenna can be designed using Yagi antenna theory and pattern reconfigurable antenna theory. The antenna consists of dielectric substrates (601, 602), bent passive oscillators (501, 507, 509, 515), horizontal straight passive oscillators (503, 505, 511, 513), RF-PIN switches (502, 504 , 506, 510, 512, 514), dipole excitation vibrator (508, 516), balancer (603) and coaxial feeder (604). according to Figure 4 As shown in the structure, as long as an appropriate size is selected, it can meet the requirements of the pattern reconstruction of the narrowband frequency band.

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Abstract

The invention belongs to the field of broadband reconfigurable micro-strip antennas and particularly relates to a mobile phone antenna with a reconfigurable directional diagram. The mobile phone antenna with the reconfigurable directional diagram is used for receiving and transmitting wireless signals in communication devices such as a mobile phone and an ISM communication device. The mobile phone antenna with the reconfigurable directional diagram is composed of two medium substrates, four bending-shaped passive vibrators, four horizontal straight passive vibrators, six switches, two dipole excitation vibrators, two perpendicular parasitic vibrators, a balancer and a coaxial feeder. The first bending-shaped passive vibrator, the first horizontal straight passive vibrator, the second horizontal straight passive vibrator and the second bending-shaped passive vibrator are sequentially connected together to form a first connecting structure through the switches. The third bending-shaped passive vibrator, the third horizontal straight passive vibrator, the fourth horizontal straight passive vibrator and the fourth bending-shaped passive vibrator are sequentially connected together to form a second connecting structure through RF-PIN switches. The antenna is small in SAR value, low in radiation, high in efficiency, simple in structure, convenient to machine and low in cost.

Description

technical field [0001] The invention belongs to the field of wide-band reconfigurable microstrip antennas, in particular to a mobile phone antenna for receiving and transmitting wireless signals in communication devices such as mobile phones and ISMs. Background technique [0002] In recent years, with the rapid development of wireless communication technology, people rely more and more on wireless communication. In order to improve the system capacity and realize the multi-function and ultra-wideband of the communication system, the next generation of wireless communication will consider more Multiple Input Multiple Output (MIMO) technology. However, with the increase in the number of antennas, the size and cost of the communication system will increase, and it will bring problems in electromagnetic compatibility, which will greatly increase the complexity and cost of MIMO technology implementation, and its technical advantages cannot be fully utilized. Phased array antenn...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q3/00H01Q3/24H01Q13/08
Inventor 李文兴张永春李思毛云龙常亮
Owner HARBIN ENG UNIV
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