CN202363583U

CN202363583U - Antenna module

Info

Publication number: CN202363583U
Application number: CN2011204993231U
Authority: CN
Inventors: 蔡文益; 钟宽仁; 苏家纬
Original assignee: Wistron Corp
Current assignee: Wistron Corp
Priority date: 2011-11-25
Filing date: 2011-12-05
Publication date: 2012-08-01
Anticipated expiration: 2021-12-05

Abstract

An antenna module comprises a substrate, a main radiation structure, a long and narrow radiation structure, a grounding structure, a short circuit structure, a parasitic radiation structure and a metal radiation body. The main radiation structure, the long and narrow radiation structure, the grounding structure, the short circuit structure and the parasitic radiation structure are all formed on the substrate. A first side of the main radiation structure and a long side of the substrate form an acute angle, and the main radiation structure is provided with a signal feed-in point and a connection point. The elongated radiation structure extends from a second side of the main radiation structure. The short circuit structure is U-shaped, a first end of the short circuit structure is connected to the signal feed-in point, and a second end of the short circuit structure is connected to the grounding structure. The parasitic radiation structure extends from the grounding structure, and is parallel to the first side edge and spaced by a fixed distance. The metal radiator is connected to the connection point. The utility model discloses can maintain and finely tune the frequency width of high frequency outside, can also go out GPS/GLONASS's frequency band with long and narrow radiation structure additional matching.

Description

Anneta module

Technical field

The utility model refers to a kind of Anneta module that can produce three operational frequency bands especially about a kind of Anneta module.

Background technology

Along with the portable electronic devices extensive use, for the also increase day by day of demand of wireless transmission, this demand also comprises the capability improving that can use multiple communication standard to device except comprising the transmission quality lifting to device.For using different communication standards, tradition is used to implement communication with antenna independently.For fear of the mutual interference of antenna phase, how real the work upward is provided with these antenna separation as far as possible again, and this design is still feasible in comparatively large-scale device, but in less device (like mobile phone), then shows the difficulty realization.Under the trend of multimode communication and device volume miniaturization, combined antenna also begins development.Yet at present combined antenna still overcomes difficultly because of isolation, and combined antenna is still many at present on same substrate, forms or a plurality of antennas are set, so the required space that is provided with of combined antenna still is difficult to reduction.

The utility model content

Therefore, one of purpose of the utility model is to provide a kind of Anneta module that can produce three operational frequency bands, to address the above problem.

According to an embodiment, the Anneta module of the utility model comprises a substrate, a primary radiation structure, a long and narrow irradiation structure, a ground structure, a short-circuit structure, a spurious radiation structure and a metal radiant body.The primary radiation structure is formed on the substrate, and a long limit of a first side of primary radiation structure and substrate presss from both sides an acute angle, and the primary radiation structure has a signal feed-in point and a tie point.Long and narrow irradiation structure is formed on the substrate and extend a second side of autonomous irradiation structure.Ground structure is formed on the substrate.Short-circuit structure is formed on the substrate, and short-circuit structure is the U font, and one first end of short-circuit structure is connected in signal feed-in point, and one second end of short-circuit structure is connected in ground structure.Spurious radiation structure is formed on the substrate and from ground structure extends, spurious radiation structure and interval one fixed range parallel with the first side.The metal radiant body is connected in tie point.

In sum; The low frequency part of the Anneta module of the utility model is controlled by short-circuit structure; See through the short-circuit structure be bent into the U font, except can keeping and finely tune the frequency range of high frequency, can also with the extra frequency band that matches GPS/GLONASS of long and narrow irradiation structure.In addition; Because the first side of spurious radiation structure and primary radiation structure interval one fixed range and not contacting; The Anneta module of the utility model can see through both and produce electromagnetic coupling effect between mutual; Can be used for adjusting the coupling of HFS; Make Anneta module can produce three operational frequency bands, (frequency range is about 698～960MHz), (frequency range is about 1570～1610MHz) and GSM1800/GSM1900/UMTS/LTE2300/LTE2500 to GPS/GLONASS to comprise LTE700/GSM850/GSM900.

Can detail and appendedly graphicly further understood through following utility model about the advantage of the utility model and spirit.

Description of drawings

Fig. 1 is the sketch map according to the Anneta module of the utility model one embodiment;

Fig. 2 is the explosive view of the Anneta module among 1 figure;

Fig. 3 is the radiation efficiency figure of the Anneta module among the 1st figure;

Fig. 4 is connected in the measured graph of a relation that returns loss and frequency of diverse location of ground structure for second end of short-circuit structure;

Fig. 5 is the measured graph of a relation that returns loss and frequency of spurious radiation structure collocation different fixed distance;

Fig. 6 is the measured graph of a relation that returns loss and frequency of the different acute angle of spurious radiation structure collocation.

Drawing reference numeral:

1 Anneta module, 10 substrates

12 primary radiation structures, 14 long and narrow irradiation structures

16 ground structures, 18 short-circuit structures

20 spurious radiation structure, 22 metal radiant bodies

24 metal pasters, 100 long limits

102,104, tie point 120 first sides

106、124

122 signal feed-in point, 126 second sides

180 first ends, 182 second ends

α acute angle d fixed range

The W width

Embodiment

See also Fig. 1 to Fig. 3, Fig. 1 is the sketch map according to the Anneta module 1 of the utility model one embodiment, and Fig. 2 is the explosive view of the Anneta module 1 among Fig. 1, and Fig. 3 is the radiation efficiency figure of the Anneta module 1 among Fig. 1.Like Fig. 1 and shown in Figure 2, Anneta module 1 comprises the long and narrow irradiation structure of a substrate 10, a primary radiation structure 12, one 14, a ground structure 16, a short-circuit structure 18, a spurious radiation structure 20, a metal radiant body 22 and a metal paster 24.In practical application, substrate 10 can be a circuit board.Primary radiation structure 12, long and narrow irradiation structure 14, ground structure 16, short-circuit structure 18 and spurious radiation structure 20 all are formed on the substrate 10.In practical application, primary radiation structure 12, long and narrow irradiation structure 14, ground structure 16, short-circuit structure 18 and spurious radiation structure 20 can be formed on the substrate 10 through typography.

One first side 120 of primary radiation structure 12 presss from both sides a sharp angle with a long limit 100 of substrate 10.Primary radiation structure 12 has a signal feed-in point 122 and a tie point 124.Extend one second side 126 of long and narrow irradiation structure 14 autonomous irradiation structures 12.Short-circuit structure 18 is the U font, and one first end 180 of short-circuit structure 18 is connected in signal feed-in point 122, and one second end 182 of short-circuit structure 18 is connected in ground structure 16.Spurious radiation structure 20 is extended from ground structure 16, the parallel and fixed range d at interval in the first side of spurious radiation structure 20 and primary radiation structure 12 120.Therefore, spurious radiation structure 20 also with the long limit of substrate 10 100 folder sharp angle.Metal radiant body 22 is connected in the tie point 124 of primary radiation structure 12 and other tie point 102,104,106 on the substrate 10.In practical application, metal radiant body 22 can be connected in the tie point 124 of primary radiation structure 12 and other tie point 102,104,106 on the substrate 10 through welding procedure.In this embodiment, metal radiant body 22 vertical substrates 10, and the width W of metal radiant body 22 is greater than 4 millimeters.By this, can obtain preferable antenna radiation efficiency.In addition, metal paster 24 is connected in ground structure 16, in order to the ground connection performance of auxiliary antenna module 1 with product.

As shown in Figure 2, the short circuit tie point and the signal feed-in point that are different from general PIFA, IFA short-circuit structure are far apart, and the earth point of short-circuit structure 18 (promptly being connected in second end, 182 places of ground structure 16) very is bordering on signal feed-in point 122.In addition; Short-circuit structure 18 makes Anneta module 1 match three required operational frequency bands with the U font exterior design of elongated bending; (frequency range is about 698～960MHz), (frequency range is about 1570～1610MHz) and GSM1800/GSM1900/UMTS/LTE2300/LTE2500 to GPS/GLONASS, and is as shown in Figure 3 to comprise LTE700/GSM850/GSM900.In this embodiment; The low frequency part of Anneta module 1 receives 18 controls of short-circuit structure; See through the short-circuit structure 18 be bent into the U font, except can keeping and finely tune the frequency range of high frequency, can also with the long and narrow irradiation structure 14 extra frequency bands that match GPS/GLONASS.

See also Fig. 4, Fig. 4 is connected in the measured graph of a relation that returns loss (return loss) and frequency (frequency) of diverse location of ground structure 16 for second end 182 of short-circuit structure 18.The short-circuit structure 18 of supposing the utility model always is about 21.5 millimeters; And keep this length and with the second end 182 skew (being position shown in Figure 2) respectively of short-circuit structure 18, move to right 5 millimeters with move to right 9 millimeters; Wherein move to right 9 millimeters the time when second end 182 of short-circuit structure 18, short-circuit structure 18 promptly is straightened into the L font by the U font.As shown in Figure 4; After losing the impedance matching of U font structure; Worsening all appears in three frequency ranges of Anneta module 1, and especially the part of GPS/GLONASS is because lost the impedance matching of short-circuit structure 18 original sweeps, so can't effectively match the GPS/GLONASS frequency range.In this embodiment, second end 182 of short-circuit structure 18 and the distance of signal feed-in point 122 can be finely tuned between 1 millimeter and 5 millimeters, to obtain preferable antenna radiation efficiency.

Spurious radiation structure 20 is responsible for the coupling high frequency; Can be optionally during design spurious radiation structure 20 be prolonged or shortens the HFS of adjusting Anneta module 1, perhaps can adjust the fixed range d and/or the sharp angle of 12 on spurious radiation structure 20 and primary radiation structure and control high-frequency resistance.See also Fig. 5 and Fig. 6, Fig. 5 is the spurious radiation structure 20 collocation different fixed graphs of a relation that return loss and frequency measured apart from d, and Fig. 6 is the measured graphs of a relation that return loss and frequency of the different sharp angle of spurious radiation structure 20 collocation.As shown in Figure 5, fixed range d is in the time of 0.5 millimeter, and the high frequency coupling is preferable.When fixed range d improved, the part of high frequency can cause mating variation along with drawing back of spurious radiation structure 20.As shown in Figure 6, with the angle of bend of spurious radiation structure 20, sharp angle is set for about 42 degree to best.When spurious radiation structure 20 to clockwise or be rotated counterclockwise 10 when spending, the high frequency of Anneta module 1 will be because of the change of angle variation.In this embodiment, sharp angle can be finely tuned between 40 degree and 44 degree, and fixed range d can finely tune between 0.5 millimeter and 1.5 millimeters, to obtain preferable antenna radiation efficiency.

Compared to prior art; The low frequency part of the Anneta module of the utility model is controlled by short-circuit structure; See through the short-circuit structure be bent into the U font, except can keeping and finely tune the frequency range of high frequency, can also with the extra frequency band that matches GPS/GLONASS of long and narrow irradiation structure.In addition; Because the first side of spurious radiation structure and primary radiation structure interval one fixed range and not contacting; The Anneta module of the utility model can see through both and produce electromagnetic coupling effect between mutual; Can be used for adjusting the coupling of HFS; Make Anneta module can produce three operational frequency bands, (frequency range is about 698～960MHz), (frequency range is about 1570～1610MHz) and GSM1800/GSM1900/UMTS/LTE2300/LTE2500 to GPS/GLONASS to comprise LTE700/GSM850/GSM900.

The above is merely the preferred embodiment of the utility model, and all equalizations of being done according to the utility model claim change and modify, and all should belong to the covering scope of the utility model.

Claims

1. an Anneta module is characterized in that, described Anneta module comprises:

One substrate;

One primary radiation structure is formed on the said substrate, and a long limit of a first side of said primary radiation structure and said substrate presss from both sides an acute angle, and said primary radiation structure has a signal feed-in point and a tie point;

One long and narrow irradiation structure is formed on the said substrate and from a second side of said primary radiation structure and extends;

One ground structure is formed on the said substrate;

One short-circuit structure is formed on the said substrate, and said short-circuit structure is the U font, and one first end of said short-circuit structure is connected in said signal feed-in point, and one second end of said short-circuit structure is connected in said ground structure;

One spurious radiation structure is formed on the said substrate and from said ground structure and extends, said spurious radiation structure and interval one fixed range parallel with said first side; And

One metal radiant body is connected in said tie point.

2. Anneta module as claimed in claim 1 is characterized in that, said acute angle is between 40 degree and 44 degree.

3. Anneta module as claimed in claim 1 is characterized in that, said long and narrow irradiation structure is in order to coupling GPS/GLONASS frequency range.

4. Anneta module as claimed in claim 1 is characterized in that the distance of said second end and said signal feed-in point is between 1 millimeter and 5 millimeters.

5. Anneta module as claimed in claim 1 is characterized in that said fixed range is between 0.5 millimeter and 1.5 millimeters.

6. Anneta module as claimed in claim 1 is characterized in that, the vertical said substrate of said metal radiant body.

7. Anneta module as claimed in claim 1 is characterized in that the width of said metal radiant body is greater than 4 millimeters.

8. Anneta module as claimed in claim 1 is characterized in that, described Anneta module comprises a metal paster in addition, is connected in said ground structure.