CN201247815Y

CN201247815Y - Multi-frequency antenna

Info

Publication number: CN201247815Y
Application number: CNU2008200507459U
Authority: CN
Inventors: 苏嘉宏; 蔡永志; 施凯; 吴裕源
Original assignee: Foxlink Electronics Dongguan Co Ltd; Cheng Uei Precision Industry Co Ltd
Current assignee: Foxlink Electronics Dongguan Co Ltd; Cheng Uei Precision Industry Co Ltd
Priority date: 2008-07-11
Filing date: 2008-07-11
Publication date: 2009-05-27
Anticipated expiration: 2018-07-11

Abstract

The utility model discloses a multi-frequency antenna which comprises a base plate, wherein the base plate is provided with a first edge, a second edge, a third edge and a fourth edge; one end of the first edge is projected and extended to form a feed-in part, and the other end of the first edge is also projected and extended to form a grounded part; the second edge is projected, extended and folded to form a first radiation part, and the third edge is projected, extended and folded to form a second radiation part and a third radiation part. Depending on the structure, the multi-frequency antenna can realize the functions of receiving and transmitting electromagnetic signals covering GSM 850, GSM 900, DCS 1800, PCS 1900, WCDMA communication systems, and the like.

Description

Multifrequency antenna

Technical field

The utility model relates to a kind of antenna, particularly relates to a kind of multifrequency antenna that is applied on the electronic products such as portable computer.

Background technology

Along with the continuous development of wireless communication technology, the various wireless communication agreement is constantly released, and electronic product begins to integrate increasing radio communication function.

But the realization of electronic product radio communication function all needs to be provided with the antenna of transmitting/receiving wireless electromagnetic wave signal.November 21 2007 Christian era, the TaiWan, China patent of bulletin disclosed a kind of multifrequency antenna M322637 number, and this multifrequency antenna can be received and dispatched the electromagnetic wave signal of GSM900, DCS1800 and PCS1900 communication system.

Yet above-mentioned multifrequency antenna is received and dispatched the needs that the electromagnetic wave frequency range still is difficult to satisfy current electronic product radio communication.

The utility model content

The purpose of this utility model is that the deficiency at the above-mentioned background technology provides a kind of multifrequency antenna of receiving and dispatching multiple different frequency range electromagnetic wave signal.

For achieving the above object, multifrequency antenna provided by the utility model comprises a substrate, and this substrate has one first edge, one second edge, one the 3rd edge and one the 4th edge.One end at first edge protrudes out and is formed with a feeding portion, and the other end at first edge protrudes out and is formed with a grounding parts.Second edge protrudes out and has been bent to form one first Department of Radiation.The 3rd edge protrudes out and has been bent to form one second Department of Radiation and one the 3rd Department of Radiation.

From the above mentioned, the utility model multifrequency antenna is arranged by the structure of substrate, feeding portion, grounding parts, first Department of Radiation, second Department of Radiation and the 3rd Department of Radiation, the electromagnetic wave signal of communication systems such as containing GSM850, GSM900, DCS1800, PCS1900 and WCDMA can be realized receiving and dispatching, thereby the needs of the wireless telecommunications of current electronic product can be satisfied.

Description of drawings

Fig. 1 is the plane graph of the utility model multifrequency antenna.

The description of reference numerals of each assembly is as follows among the figure:

Multifrequency antenna 100 substrates 10

11 second edges 12, first edge

The 4th edge 14, the 3rd edge 13

Feeding portion 20 load points 21

Grounding parts 30 earth points 31

40 first Departments of Radiation 50 of slotting

First extension, 51 second extensions 52

Second Department of Radiation 60 the 3rd extension 61

First groove 611 the 4th extension 62

Second groove 621 the 5th extension 63

Limit groove 631,641 the 6th extensions 64

The 3rd Department of Radiation 70 the 7th extension 71

The 8th extension 72 the 9th extension 73

Embodiment

By describing technology contents of the present utility model, structural feature in detail, being realized purpose and effect, below for example and conjunction with figs. is detailed gives explanation.

See also Fig. 1, the utility model multifrequency antenna 100 comprises the substrate 10 of a rectangular plate shape.Substrate 10 has one first edge 11, one second edge 12, one the 3rd edge 13 and one the 4th edge 14, and wherein, first edge 11 is relative with second edge 12, and the 3rd edge 13 is relative with the 4th edge 14.

The left end at first edge 11 of substrate 10 upwards protrudes out the feeding portion 20 of a rectangular plate shape, and the upper end of feeding portion 20 is provided with a load point 21.The right-hand member at first edge 11 upwards protrudes out the grounding parts 30 of a rectangular plate shape, and the upper end of grounding parts 30 is provided with an earth point 31.Be formed with a fluting 40 between grounding parts 30 and the feeding portion 20, this fluting 40 makes grounding parts 30 and feeding portion 20 form gang mould plan inductance in the lump, the input impedance of this parallel connection simulaed inductance scalable the utility model multifrequency antenna 100, the input impedance of multifrequency antenna 100 and the characteristic impedance of feeder line are mated with minimizing return loss, thereby improve the transmitting-receiving performance and the efficient of the utility model multifrequency antenna 100.

Second edge 12 of substrate 10 protrudes out and has been bent to form one first Department of Radiation 50.First Department of Radiation 50 has a left end from second edge 12 and protrudes out downwards more to the right and extend first extension 51 that upwards bending extends to form along the direction that is parallel to this second edge 12 again, the end of this first extension 51 extends the direction bending that is parallel to the 4th edge 14 to the upper edge left again and has extended to form one second extension 52, and this second extension 52 is positioned at the right side of substrate 10.

The 3rd edge 13 of substrate 10 protrudes out and has been bent to form one second Department of Radiation 60.Second Department of Radiation 60 has 13 lower ends, the 3rd edge from substrate 10 and protrudes out upwards bending left again and extend the 3rd extension 61 of " L " shape that forms, thereby is formed with one first groove 611 between the 3rd extension 61 and the substrate 10.The end of the 3rd extension 61 protrudes out upwards bending left again and extends to form the 4th extension 62 of one " L " shape, thereby is formed with one second groove 621 between the 4th extension 62 and the substrate 10.The center that the end of the 4th extension 62 protrudes out tabular the 5th extension 63, the five extensions 63 upper ends left offers groove 631 on one side.The 5th extension 63 has protruded out one the 6th extension 64 downwards.The 6th extension 64 right-hand members are close to the 5th extension 63 places and offer groove 641 on one side.Limit groove 641 (631) is mainly and cooperates the internal structure of electronic product to work the effect of dodging, so that the utility model multifrequency antenna 100 is assembled in electronic product inside; Limit groove 641 (631) can also increase the electrical length of second Department of Radiation 60, thereby reduces its space hold in the electrical length of realizing second Department of Radiation 60.

The 3rd edge 13 of substrate 10 protrudes out and has been bent to form one the 3rd Department of Radiation 70.The 3rd Department of Radiation 70 has an approximate mid-section from the 3rd edge 13 and protrudes out upwards bending left again and extend the 7th extension 71, the seven extensions 71 of " L " shape that forms and be positioned at first groove 611.The end of the 7th extension 71 protrudes out the lower end that upwards bends the 8th extension 72, the eight extensions 72 that extend to form one " L " shape more left and is positioned at first groove 611.The bending extension that makes progress after the end of the 8th extension 72 protrudes out left bends the lower end that has extended to form one the 9th extension, 73, the nine extensions 73 more to the right and is positioned at second groove 621.

It is the electromagnetic quarter-wave of 1940MHz that total electrical length of the substrate 10 of the utility model multifrequency antenna 100, feeding portion 20, grounding parts 30 and first Department of Radiation 50 is substantially equal to frequency; It is the electromagnetic quarter-wave of 900MHz that total electrical length of substrate 10, feeding portion 20, grounding parts 30 and second Department of Radiation 60 is substantially equal to frequency; It is the electromagnetic quarter-wave of 1940MHz that total electrical length of substrate 10, feeding portion 20, grounding parts 30 and the 3rd Department of Radiation 70 is substantially equal to frequency.

The utility model multifrequency antenna 100 is when communication, substrate 10, feeding portion 20, grounding parts 30 and first Department of Radiation 50 and frequency are that the electromagnetic wave resonance of 1940MHz is received and dispatched the electromagnetic wave signal of DCS1800, PCS1900 and WCDMA communication system, and bias toward the transmitting-receiving of the electromagnetic wave signal of WCDMA communication system.Substrate 10, feeding portion 20, grounding parts 30 and second Department of Radiation 60 and frequency are the electromagnetic wave signal that the electromagnetic wave resonance of 900MHz is received and dispatched GSM850 and GSM900 communication system.Substrate 10, feeding portion 20, grounding parts 30 and the 3rd Department of Radiation 70 and frequency are that the electromagnetic wave resonance of 1940MHz is received and dispatched the electromagnetic wave signal of DCS1800, PCS1900 and WCDMA communication system, and bias toward the transmitting-receiving of the electromagnetic wave signal of DCS1800 communication system.

The utility model multifrequency antenna 100 can adopt the manufacturing of flexible circuit board technology, to utilize the strong character of flexible printed wiring board deflection deformation ability, the space layout of multifrequency antenna 100 according to electronic product required to be provided with, can save the space like this, adapt to the development trend of current miniaturization of electronic products.When multifrequency antenna 100 was assembled in the electronic product, available adhesive sticks in the inside of electronic product, and was easy to assembly.And multifrequency antenna 100 is printed on the flexible circuit board and can improves its thermal diffusivity, thereby makes it keep stable operating state.

From the above mentioned, the utility model multifrequency antenna 100 is arranged by the structure of substrate 10, feeding portion 20, grounding parts 30, first Department of Radiation 50, second Department of Radiation 60 and the 3rd Department of Radiation 70, the electromagnetic wave signal of communication systems such as containing GSM850, GSM900, DCS1800, PCS1900 and WCDMA can be realized receiving and dispatching, thereby the needs of the wireless telecommunications of current electronic product can be satisfied.

In addition, the utility model multifrequency antenna 100 is simple in structure, and occupation space is little, adapts to the development trend of current miniaturization of electronic products.

Claims

1. multifrequency antenna, it is characterized in that: comprise a substrate, this substrate has one first edge, one second edge, one the 3rd edge and one the 4th edge, one end at first edge protrudes out and is formed with a feeding portion, the other end at first edge protrudes out and is formed with a grounding parts, second edge protrudes out and has been bent to form one first Department of Radiation, and the 3rd edge protrudes out and be bent to form one second Department of Radiation and one the 3rd Department of Radiation.

2. multifrequency antenna according to claim 1 is characterized in that: first edge of described substrate is relative with second edge, and the 3rd edge is relative with the 4th edge, is formed with a fluting between described feeding portion and the described grounding parts.

3. multifrequency antenna according to claim 1, it is characterized in that: described first Department of Radiation has second an edge left end from described substrate and protrudes out downwards more to the right and extend first extension that upwards bending extends to form along the direction that is parallel to this second edge again, and the end of this first extension extends the direction bending that is parallel to described the 4th edge to the upper edge left again and extended to form one second extension.

4. multifrequency antenna according to claim 1, it is characterized in that: described second Department of Radiation has a lower end, the 3rd edge from described substrate and protrudes out the 3rd extension that upwards bending extension forms left again, the end of the 3rd extension protrudes out upwards bending left again and has extended to form one the 4th extension, the end of the 4th extension has protruded out one the 5th extension left, and the 5th extension has protruded out one the 6th extension downwards.

5. multifrequency antenna according to claim 4 is characterized in that: offer groove on one side on described the 5th extension and the 6th extension respectively.

6. multifrequency antenna according to claim 1, it is characterized in that: described the 3rd Department of Radiation has a center from the 3rd edge of described substrate and protrudes out upwards bending left again and extend the 7th extension that forms, the end of the 7th extension protrudes out upwards bending left again and has extended to form one the 8th extension, and the bending that makes progress after the end of the 8th extension protrudes out is left extended bending to the right again and extended to form one the 9th extension.

7. multifrequency antenna according to claim 1 is characterized in that: the upper end of described feeding portion is provided with a load point.

8. multifrequency antenna according to claim 1 is characterized in that: the upper end of described grounding parts is provided with an earth point.