CN201282187Y

CN201282187Y - Loop antenna for metal case or non-metal case mobile phone

Info

Publication number: CN201282187Y
Application number: CNU2008201362457U
Authority: CN
Inventors: 江启名
Original assignee: YAODENG SCIENCE AND TECHONLOGY CO Ltd
Current assignee: YAODENG DIANTONG TECHNOLOGY (KUNSHAN) CO., LTD.
Priority date: 2008-09-19
Filing date: 2008-09-19
Publication date: 2009-07-29
Anticipated expiration: 2018-09-19

Abstract

The utility model relates to a ring-shaped antenna capable of being applied in a mobile phone with a metal casing or a nonmetal casing; the ring-shaped antenna is provided with a ring-shaped part which rotates along the edge of a circuit board of the mobile phone; a grounding terminal is positioned at the tail end of the ring-shaped part and connected to the ground on the circuit board; a feed-in terminal is positioned at the other tail end of the ring-shaped part and connected to the circuit board for signal input; and two blocking terminals are formed through the blocking in the middle position of the ring-shaped part. When the mobile phone adopts the metal casing, the blocking terminals are connected to the metal casing conductively; and when the mobile phone adopts the nonmetal casing, the blocking terminals are communicated in a short circuit manner. Therefore, the utility model overcomes the problem that the known metal casing covers the antenna so that the shield can affect the antenna efficiency and can greatly save the cost of the antenna of the mobile phone.

Description

Can be used in the loop aerial of metal shell or non-metal shell mobile phone

Technical field

The utility model refers to a kind of loop aerial that is used in metal shell or non-metal shell mobile phone especially about a kind of mobile phone structure.

Background technology

The essential antenna that connects on the circuit board in the mobile phone is to do the transmitting-receiving of signal.Be requirement and the trend that makes the mobile phone consolidationization, the also reduction relatively of space that antenna is shared.Dwindling taking up room in antenna for mobile phone with loop aerial (loop ant.), is already used technology.

This kind loop aerial is to do being communicated with of conductivity with the metallic conductor of strip around being arranged in the phone housing and with the loop on the circuit board traditionally, to reach the effect that mobile phone multioperation frequency range is used.

Yet, when the shell of mobile phone adopts metal shell for some factor sometimes,, can produce shielding action signal is weakened because metal shell is coated on outside the loop aerial, make loop aerial be difficult to be used in the metal shell mobile phone, this is industry utmost point problem points to be improved.

Summary of the invention

The utility model purpose is, a kind of loop aerial that is used in metal shell or non-metal shell mobile phone is provided, to overcome the shortcoming that known loop aerial can't be used in the metal shell mobile phone, in the time of in being used in the metal shell mobile phone, metal shell can be covered on the loop aerial and be used as the part of antenna, overcomes the problem that known metal shell cover antenna can produce the screening effect antenna efficiency.Simultaneously, as long as two truncated end of this loop aerial are given the short circuit connection, then this loop aerial also can use in the mobile phone of non-metal shell.

According to above-mentioned purpose, a kind of loop aerial that is used in metal shell or non-metal shell mobile phone, the metal of this mobile phone or non-metal shell inside have a circuit board; It is characterized in that, comprising:

One ring part, along the board edge of this mobile phone around;

One earth terminal, position be at an end of this ring part, and be connected to the ground on this circuit board;

One in order to doing the feed side of signal input, and the position is at another end of this ring part, and be connected to this circuit board; And

With so that two truncated end that this ring part blocks, be opened in the centre position of this ring part;

Be connected to this two truncated end conductivity this metal shell of mobile phone, perhaps, two truncated end short circuits are communicated with, and are arranged in the mobile phone of non-metal shell.

Wherein, this ring part, earth terminal and feed side are etched on this circuit board.

Wherein, this ring part, earth terminal and feed side and this circuit board are separatedly installed.

The utility model beneficial effect; By the loop aerial design concept that the utility model is carried, in the time of in being used in the metal shell mobile phone, metal shell can be covered on the loop aerial and be used as the part of antenna, overcomes the problem that known metal shell cover antenna can produce the screening effect antenna efficiency.Simultaneously, as long as two truncated end of this loop aerial are given the short circuit connection, then this loop aerial also can use in the mobile phone of non-metal shell.Like this, can significantly save the cost of antenna for mobile phone.

Below, structure of the present utility model will be described in detail according to the embodiment shown in the drawing and use effect.

Description of drawings

Fig. 1: expression the utility model loop aerial is around the stereogram of a circuit board, and wherein circuit board is represented by dotted lines,

Fig. 2: represent the top side view of loop aerial loop circuit capable plate of the present utility model,

Fig. 3: represent the underneath side elevation view of loop aerial loop circuit capable plate of the present utility model,

Fig. 4: represent that loop aerial of the present utility model is used in the exploded view of mobile phone,

Fig. 5: represent the VSWR figure that loop aerial test of the present utility model is connected with metal shell,

Fig. 6: represent the VSWR figure that loop aerial test of the present utility model is not connected with metal shell.

Embodiment

Seeing also Fig. 1 to Fig. 3, is a kind of embodiment of the utility model loop aerial 1, on its circuit board 24 in the

shell

21,22,23 of mobile phone 2 (referring to Fig. 4).Loop aerial 1 is constituted with a ring part 11, an earth terminal 12, a feed side 13 and two truncated end 14.

Ring part 11, along circuit board 24 edge ring of mobile phone 2 around; And 12 ends of earth terminal, and be connected to a ground 25 on the circuit board 24 at ring part 11; And 13 another ends in feed side, and be connected to circuit board 24 to do the signal input at ring part 11.Centre position at ring part 11 is blocked, to form two truncated end 14.

Loop aerial 1 design of the present utility model down, when mobile phone 2 is metal shell, the

shell

21 and 23 of both sides up and down for example shown in Figure 4 is a metal, and the middle shell 22 that connects is a plastic cement, then two truncated end, 14 conductivity are connected to metal shell 21, make this metal shell 21 be used as the part of antenna, to get rid of the shielding problem that metal shell produces loop aerial.But when mobile phone 2 is non-metal shell, when upper, middle and

lower side shell

21,22,23 for example shown in Figure 4 is all plastic cement, then, two truncated end 14 are communicated with as long as being given short circuit.

For the loop aerial 1 that clearly demonstrates present embodiment around situation, referring to Fig. 1 and cooperate Fig. 2 and Fig. 3, shown in the figure, loop aerial 1 is from earth terminal 12, connection is with first section 11a of circuit board 24 top sides, pass the bottom side of circuit board 24 through second section 11b, again with the 3rd section 11c of ㄇ type along the bottom edge of circuit board 24 around, and pass circuit board 24 again with the 4th section 11d and be back to the top side, to form two truncated end 14, so connect the 5th section 11f again, be connected in the loop of circuit board 24 with feed side 13 at last, to do the signal input.

Apparently, loop aerial 1 provided by the utility model, in the time of in being used in the metal shell mobile phone, metal shell can be covered on the loop aerial 1 and be used as the part of antenna, overcomes the problem that known metal shell cover antenna can produce the screening effect antenna efficiency.

Referring to Fig. 5, be the VSWR figure that Fig. 1 is connected with metal shell to the utility model loop aerial embodiment test shown in Figure 3, Fig. 6 is not then for adding the VSWR figure of metal shell (can be considered and be used in the non-metal shell mobile phone).

The three-dimensional gain (3D Gain) that following table then is connected with metal shell for test:

Following table does not then add the three-dimensional gain (3D Gain) of metal shell for test:

By above chart, present embodiment can be used in metal shell or the non-metal shell mobile phone really as can be known, to obtain good a plurality of operation frequency ranges.

The person of advancing, loop aerial 1 of the present utility model can be etched on the circuit board 24 when making, and also can separate with circuit board 24, and this is very simple variation, not in addition with the drawing explanation, but still belongs among the protection of this case claim.

Claims

1. loop aerial that can be used in metal shell or non-metal shell mobile phone, the metal of this mobile phone or non-metal shell inside have a circuit board; It is characterized in that, comprising:

One ring part, along the board edge of this mobile phone around;

2. according to the described loop aerial that is used in metal shell or non-metal shell mobile phone of claim 1, it is characterized in that: this ring part, earth terminal and feed side are etched on this circuit board.

3. according to the described loop aerial that is used in metal shell or non-metal shell mobile phone of claim 1, it is characterized in that: this ring part, earth terminal and feed side and this circuit board are separatedly installed.