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Method for realizing miniaturization and broadbandization of printed slot-type mobile phone antenna

A mobile phone antenna, broadband technology, applied in the field of printed slot-type mobile phone antenna, can solve the problems of narrow bandwidth, large area, low SAR, etc., and achieve the effect of maintaining miniaturization, realizing broadband matching, and reducing return loss

Inactive Publication Date: 2016-10-05
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with other types of antennas, printed slot antennas have the advantages of low SAR, and the antenna performance is less affected by the human environment. However, due to the lack of a clear theoretical model, the design ideas for printed slot antennas are not clear, and the existing design methods lack flexibility. and diversity, there are disadvantages of large area and narrow bandwidth

Method used

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  • Method for realizing miniaturization and broadbandization of printed slot-type mobile phone antenna
  • Method for realizing miniaturization and broadbandization of printed slot-type mobile phone antenna
  • Method for realizing miniaturization and broadbandization of printed slot-type mobile phone antenna

Examples

Experimental program
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Effect test

Embodiment 1

[0020] see figure 1 , a method for realizing the miniaturization and broadbandization of printed slot-type mobile phone antennas. The slot antenna is printed on the mobile phone circuit board, including a three-layer structure: a dielectric board (1), a ground (2) arranged on the bottom of the dielectric board, and a Feed line (3) on the top side of the dielectric plate. The gap is located on the ground (2) of the circuit board, and is composed of two parts (21) and (22), wherein (21) adopts a rectangle, and (22) adopts a circle, and the two are connected to form a ladder shape, (21) ) open on the (11) side of the board. The feeder is composed of a 50Ω microstrip line (30) connected to three metal patches (31), (32), (33), wherein (31), (33) are rectangular, and (32) is circular , the three are connected to form a ladder structure, the open end of (31) points to the side (11) of the circuit board, and the projections of (31), (32), and (33) on the ground are inside the gaps ...

Embodiment 2

[0025] see figure 2 , a method for realizing the miniaturization and broadbandization of printed slot-type mobile phone antennas. The slot antenna is printed on the mobile phone circuit board, including a three-layer structure: a dielectric board (1), a ground (2) arranged on the bottom of the dielectric board, and a Feed line (3) on the top side of the dielectric plate. The gap is located on the ground (2) of the circuit board and is composed of three parts (21), (22) and (25), wherein (21) adopts a rectangle, and (22) adopts a circle, and the two are connected to form a ladder The shape, (21) is an open circuit on the (11) side of the circuit board, and (25) is the longitudinal extension of the transverse part of the slit in the circuit board. The feeder is composed of a 50Ω microstrip line (30) connected to three metal patches (31), (32), (33), wherein (31), (33) are rectangular, and (32) is circular , the three are connected to form a ladder structure, the open end of (...

Embodiment 3

[0027] see image 3 , a method for realizing the miniaturization and broadbandization of printed slot-type mobile phone antennas. The slot antenna is printed on the mobile phone circuit board, including a three-layer structure: a dielectric board (1), a ground (2) arranged on the bottom of the dielectric board, and a Feed line (3) on the top side of the dielectric plate. The gap is located on the ground (2) of the circuit board and is composed of (21), (22) and (23) connected, wherein (21), (23) adopts a rectangle, and (22) adopts a circle, and the three are connected Form a stepped shape, (21) open on the (11) side of the board. The feeder is composed of a 50Ω microstrip line (30) connected to three metal patches (31), (32), (33), wherein (31), (33) are rectangular, and (32) is circular , the three are connected to form a ladder structure, the open end of (31) points to the side (11) of the circuit board, and the projections of (31), (32), and (33) on the ground are in the ...

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Abstract

The invention discloses a method for realizing miniaturization and broadbandization of a printed slot-type mobile phone antenna, and solves the problem of an existing printed slot-type mobile phone antenna that the broadband is narrow and the size is large. A slot is arranged on the ground of a circuit board, two or three slot units are connected to form a step shape, and the left end of the slot is open. A feeder line is formed by a 50 [omega] microstrip line and three metal paster units in a folded shape, and the feed line is open at a terminal. The open end of the feeder line and the open end of the slot point to the same side edge of the circuit board, and the boundary of the feeder line is bent around the boundary of the slot, so that the echo loss is reduced, and broadband coupling is realized. The projection of the metal pasters falls in the slot, no additional area of the circuit board is occupied, and the miniaturization of the antenna is facilitated. The slot units are rectangular, circular or elliptical, and the metal paster units are rectangular, circular or elliptical. According to the invention, the structure is simple, the idea is clear, the realization is easy, and the engineering application value is very high.

Description

technical field [0001] The invention relates to a printed slot-type mobile phone antenna, in particular to a method for realizing the miniaturization and broadbandization of the printed slot-type mobile phone antenna. Background technique [0002] Printed slot antennas have the advantages of small size, light weight, and easy integration, and are widely used in mobile communications, satellite communications, and other fields. The terminal equipment of these communication systems requires the antenna to have the characteristics of miniaturization and broadband. For example, antennas installed in mobile phones, notebooks, smart watches and other devices need to have the characteristics of small size and light weight, and at the same time, they must support the second generation (Second Generation, 2G) and third generation (Third Generation, 3G) of mobile communications. ), the fourth generation (Fourth Generation, 4G), and wireless fidelity (Wireless Fidelity, WiFi) and othe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/50H01Q1/22H01Q5/50
Inventor 宗卫华
Owner QINGDAO UNIV
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