CN103840251B - Broadband Antennas and Wireless Communication Devices - Google Patents

Abstract

A broadband antenna and a wireless communication device. The broadband antenna includes: a first radiating conductor comprising: the antenna comprises a grounding part, a short-circuit part, a first radiation arm and a second radiation arm; the grounding part is provided with a grounding end; the short circuit part is electrically connected with the grounding part and is in a winding shape; the first and second radiation arms are electrically connected to one end of the short-circuit part far away from the grounding part; and a second radiation conductor which is arranged at an interval from the first radiation conductor and includes: a feed-in part, a third radiation arm and a fourth radiation arm; the feed-in part is coupled with the first radiation arm and is provided with a feed-in end for feeding in a radio frequency signal; the third radiating arm and the fourth radiating arm are electrically connected with the feed-in part, the third radiating arm is at least partially coupled with the first radiating arm, and the third radiating arm is at least partially meandered; the first radiating arm resonates in a first frequency band, the third radiating arm resonates in a second frequency band, the meandering portion, the short-circuit portion and the second radiating arm of the third radiating arm resonate in a third frequency band, and the fourth radiating arm resonates in a fourth frequency band. The invention can conform to the broadband communication standards of WWAN and LTE.

Description

Broadband Antennas and Wireless Communication Devices

technical field

The present invention relates to a broadband antenna and a wireless communication device, in particular to a broadband antenna and a wireless communication device operable in an LTE (Long-Term Evolution) frequency band.

Background technique

At present, wireless communication technology is developing towards 4G to support the transmission of large amounts of data. The LTE communication protocol has become the common standard of the global 4G communication system. Currently existing antennas cannot meet the broadband requirements of the LTE standard. Therefore, how to develop a new broadband antenna and wireless communication device to meet the transmission requirements of the LTE frequency band becomes the focus of further discussion in the present invention.

Contents of the invention

Therefore, the object of the present invention is to provide a broadband antenna that can operate in the LTE frequency band and the WWAN (Wireless Wide Area Network) frequency band.

Another object of the present invention is to provide a wireless communication device supporting wireless transmission in LTE frequency band and WWAN frequency band.

Therefore, the broadband antenna of the present invention includes a first radiating conductor and a second radiating conductor. The first radiation conductor includes a ground portion, a short circuit portion, a first radiation arm and a second radiation arm. The ground portion has a ground terminal. The short circuit portion is electrically connected to the ground portion and has a meandering shape. The first radiating arm and the second radiating arm are electrically connected to an end of the short-circuit portion away from the ground portion. The second radiating conductor is spaced apart from the first radiating conductor and includes a feeding portion, a third radiating arm and a fourth radiating arm. The feeding part is coupled with the first radiation arm and has a feeding end for feeding a radio frequency signal and a closed slot. The third radiating arm and the fourth radiating arm are electrically connected to the feeding part. The third radiating arm is at least partially coupled to the first radiating arm, and is at least partially in a meandering shape. The first radiating arm resonates in a first frequency band, the third radiating arm resonates in a second frequency band, the meander, the short circuit part and the second radiating arm of the third radiating arm resonate in a third frequency band, and the fourth radiating arm resonates in a fourth frequency band. The first frequency band is 704~787MHz, the second frequency band is 824~960MHz, the third frequency band is 1710~2170MHz, and the fourth frequency band is 2300~2700MHz.

The broadband antenna of the present invention includes: a first radiating conductor, the first radiating conductor includes: a grounding portion, the grounding portion has a grounding end; a short-circuit portion, the short-circuiting portion is electrically connected to the grounding portion and has a meandering shape shape; a first radiating arm, the first radiating arm is electrically connected to one end of the short-circuit portion away from the grounding portion; and a second radiating arm, the second radiating arm is electrically connected to one end of the short-circuit portion away from the grounding portion and a second radiating conductor, the second radiating conductor is spaced apart from the first radiating conductor and includes: a feed-in portion coupled to the first radiating arm and having a feed-in for feeding a radio frequency signal end; a third radiating arm, the third radiating arm is electrically connected to the feeding part, the third radiating arm is at least partially coupled to the first radiating arm, and the third radiating arm is at least partially meandering; and a The fourth radiating arm, the fourth radiating arm is electrically connected to the feeding part; the first radiating arm resonates in a first frequency band, the third radiating arm resonates in a second frequency band, and the meander of the third radiating arm , the short-circuit part and the second radiating arm resonate in a third frequency band, and the fourth radiating arm resonates in a fourth frequency band.

The short circuit part has a first metal segment electrically connected to the ground part, a second metal segment electrically connected to the end of the first metal segment away from the ground part and approximately perpendicular to the first metal segment, and a second metal segment electrically connected to the second metal segment a third metal segment away from one end of the first metal segment and substantially perpendicular to the second metal segment, a fourth metal segment electrically connected to the end of the third metal segment away from the second metal segment and substantially perpendicular to the third metal segment, and a fifth metal segment approximately perpendicular to the fourth metal segment, one end of the fifth metal segment is electrically connected to an end of the fourth metal segment away from the third metal segment, and the other end of the fifth metal segment is electrically connected to the first radiating arm with the second radiating arm.

The third radiating arm has a first radiating section electrically connected to the feed-in portion and roughly L-shaped, a second radiating section electrically connected to the first radiating section and roughly U-shaped, and a second radiating section electrically connected to the second radiating section The third radiating section, the first radiating section and the second radiating section are meandering, and the second radiating section resonates in the third frequency band. The first radiating section is locally coupled to the first radiating arm. The third radiating section is roughly U-shaped, and the first radiating arm and the second radiating arm are roughly L-shaped. There is a coupling gap between the feed-in part and the third radiating arm and the first radiating arm, and the width of the coupling gap is approximately 0.4mm-0.8mm.

The wireless communication device of the present invention includes: a communication module, a feed assembly and a broadband antenna; the communication module is used to generate a radio frequency signal; the feed assembly is electrically connected to the communication module to transmit the radio frequency signal; the broadband antenna It includes: a first radiating conductor and a second radiating conductor; the first radiating conductor has a grounding part, a short-circuit part, a first radiating arm and a second radiating arm, the grounding part has a grounding end, and the short-circuiting The first radiating arm and the second radiating arm are electrically connected to one end of the short-circuit portion away from the grounding portion; the second radiating conductor is spaced apart from the first radiating conductor And has a feed-in part, a third radiating arm and a fourth radiating arm, the feeding part is coupled with the first radiating arm and has a feeding end, the feeding end is electrically connected to the feeding component for feeding The radio frequency signal, the third radiating arm and the fourth radiating arm are electrically connected to the feeding part, the third radiating arm is at least partially coupled to the first radiating arm and at least partially in a meandering shape, and the first radiating arm resonates In a first frequency band, the third radiating arm resonates in a second frequency band, the meander of the third radiating arm, the short-circuit part and the second radiating arm resonate in a third frequency band, and the fourth radiating arm resonates in a fourth frequency band.

The effect of the present invention is that it can resonate in the third frequency band through the meandering structure of the third radiating arm and the short-circuit part and cooperate with the second radiating arm, and resonate in the third frequency band through the first radiating arm, the third radiating arm and the fourth radiating arm respectively. The first frequency band, the second frequency band and the fourth frequency band can meet the broadband communication standards of WWAN and LTE.

Description of drawings

FIG. 1 is a schematic diagram of a preferred embodiment of the wireless communication device of the present invention;

Fig. 2 is a structural schematic view of the first preferred embodiment of the broadband antenna of the present invention;

Fig. 3 is a structural schematic view of the second preferred embodiment of the broadband antenna of the present invention; and

Fig. 4 is a voltage standing wave ratio diagram of the broadband antenna of the present invention.

Description of main component symbols:

100 communication module 13 first radiation arm

200 Feed assembly 14 second radiating arm

300 broadband antenna 2 second radiating conductor

1 first radiating conductor 21 feeding part

11 Grounding part 211 Feed-in terminal

111 ground terminal 212 closed slot

12 short-circuit part 22 third radiation arm

121 first metal segment 221 first radiation segment

122 second metal segment 222 second radiation segment

123 The third metal segment 223 The third radiation segment

124 fourth metal segment 23 fourth radial arm

125 fifth metal segment D coupling gap

detailed description

The foregoing and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of two preferred embodiments with reference to the accompanying drawings.

Before the present invention is described in detail, it should be noted that in the following description, similar components are denoted by the same numerals.

Referring to FIG. 1 , FIG. 1 is a schematic diagram of a preferred embodiment of the wireless communication device of the present invention. The wireless communication device includes a communication module 100 , a feeding component 200 and a broadband antenna 300 . The wireless communication device may be a mobile communication device such as a smart phone, a notebook computer, a tablet computer, or a handheld navigation device, but is not limited thereto. The communication module 100 is used for generating a radio frequency signal. The feed assembly 200 is electrically connected between the communication module 100 and the broadband antenna 300 to transmit radio frequency signals to the broadband antenna 300 . The feed assembly 200 is a coaxial cable in this embodiment.

Although the broadband antenna 300 shown in FIG. 1 is arranged above the display of a notebook computer, the arrangement in FIG. 1 is only for illustration, and it is not limited to this in actual application, and the broadband antenna 300 can be arranged on, for example, The bottom of the display, the side of the keyboard, the pivot joint of the screen, etc., or other devices arranged outside the notebook computer.

FIG. 2 is a schematic structural diagram of the first preferred embodiment of the broadband antenna of the present invention. Referring to FIG. 2 , the broadband antenna 300 includes a first radiation conductor 1 and a second radiation conductor 2 spaced apart from the first radiation conductor 1 . The first radiation conductor 1 has a ground portion 11 , a short circuit portion 12 , a first radiation arm 13 and a second radiation arm 14 . The ground portion 11 is a rectangular conductor and has a ground terminal 111 , and the ground terminal 111 is electrically connected to the power feeding component 200 (refer to FIG. 1 ) to receive a ground signal.

The short circuit portion 12 is electrically connected to the ground portion 11 and has a meandering shape. In this embodiment, the short circuit portion 12 has a first metal segment 121 , a second metal segment 122 , a third metal segment 123 , a fourth metal segment 124 and a fifth metal segment 125 . The first metal segment 121 extends from the ground portion 11 along a Y direction. The second metal segment 122 extends from an end of the first metal segment 121 away from the ground portion 11 along an X direction perpendicular to the Y direction. The third metal segment 123 extends along the Y direction from an end of the second metal segment 122 away from the first metal segment 121 . The fourth metal segment 124 extends along the −X direction from the end of the third metal segment 123 away from the second metal segment 122 . The fifth metal segment 125 extends along the Y direction from an end of the fourth metal segment 124 away from the third metal segment 123 . The first radiating arm 13 extends along the X direction from the end of the fifth metal segment 125 of the short-circuit portion 12 away from the fourth metal segment 124 . The second radiating arm 14 extends along the −X direction from the end of the fifth metal segment 125 of the short-circuit portion 12 away from the fourth metal segment 124 .

The second radiation conductor 2 has a feeding portion 21 , a third radiation arm 22 and a fourth radiation arm 23 . The feed-in portion 21 is a rectangular conductor and has a feed-in end 211 . The feeding end 211 is electrically connected to the feeding component 200 (refer to FIG. 1 ) for feeding in radio frequency signals. The feeding part 21 is adjacent to the first radiating arm 13 and coupled with the first radiating arm 13 . The third radiating arm 22 and the fourth radiating arm 23 are respectively electrically connected to opposite sides of the feeding portion 21 . The third radiating arm 22 is at least partially coupled to the first radiating arm 13 and is at least partially in a meandering shape. In this embodiment, the third radiating arm 22 has a first radiating section 221 , a second radiating section 222 and a third radiating section 223 . The first radiating section 221 is electrically connected to the feeding portion 21 and is approximately L-shaped. An end portion of the first radiating section 221 adjacent to the feeding part 21 is coupled to the first radiating arm 13 . The width of a coupling gap D between the first radiating section 221 and the feeding portion 21 and the first radiating arm 13 is approximately 0.4 mm˜0.8 mm. The second radiating section 222 is electrically connected to the first radiating section 221 and is roughly U-shaped. The third radiating section 223 is electrically connected to the second radiating section 222 and extends along the X direction from the second radiating section 222 . The first radiating section 221 and the second radiating section 222 form an S-shaped meandering structure. The fourth radiating arm 23 extends along the −X direction from the feeding portion 21 .

During operation, the first radiating arm 13 resonates in a first frequency band, the third radiating arm 22 resonates in a second frequency band, and the second radiating section 222 of the third radiating arm 22, the short-circuit portion 12 and the second radiating arm 14 resonate In a third frequency band, the fourth radiation arm 23 resonates in a fourth frequency band. In this embodiment, the first frequency band is 704-787 MHz, the second frequency band is 824-960 MHz, the third frequency band is 1710-2170 MHz, and the fourth frequency band is 2300-2700 MHz. That is to say, the first radiating arm 13 and the third radiating arm 22 are used to generate low-frequency modes (704~960MHz), and the second radiating arm 14, the fourth radiating arm 23, the short-circuit part 12 and the third radiating arm 22 The second radiation section 222 is used to generate high frequency modes (1710~2700MHz). Thereby, the broadband antenna 300 can operate in the LTE frequency band and the WWAN frequency band. It is worth mentioning that the meandering structure of the short-circuit part 12 has both the effect of shortening the length of the first radiating arm 13 and the effect of resonating high-frequency modes. Similarly, the meandering structure of the third radiating arm 22 also has the effect of shortening The effect of the length of the third radiating arm 22 and the effect of resonating a high frequency mode.

Referring to FIG. 3 , FIG. 3 is a structural diagram of a second preferred embodiment of the broadband antenna of the present invention. The second preferred embodiment is similar to the first preferred embodiment, and the main differences are described as follows. In the second preferred embodiment, the third radiating section 223 is approximately U-shaped, and the first radiating arm 13 and the second radiating arm 14 are approximately L-shaped. Through the aforementioned bending structure, the area of the broadband antenna 300 can be further reduced, for example, it can be reduced to 75×14 mm in this embodiment. Furthermore, the feed-in portion 21 of the second radiation conductor 2 also has a rectangular closed groove 212 in this embodiment. The closed slot 212 can effectively improve the radiation gain of the broadband antenna 300 .

Referring to FIG. 4, FIG. 4 is a voltage standing wave ratio (VSWR) diagram of the broadband antenna of the present invention. FIG. 4 shows that the VSWR of the broadband antenna 300 in both the WWAN frequency band and the LTE frequency band can be lower than 3.0.

In summary, the broadband antenna of the present invention and the wireless communication device having the broadband antenna can resonate in the third frequency band through the meandering structure of the third radiating arm 22 and the short-circuit portion 12 and the second radiating arm 14. In addition, With the first radiating arm 13, the third radiating arm 22 and the fourth radiating arm 23 respectively resonating in the first frequency band, the second frequency band and the fourth frequency band, it can comply with WWAN and LTE broadband communication standards and support 4G wireless communication Therefore, the purpose of the present invention can be really achieved.

However, what is described above is only a preferred embodiment of the present invention, and should not limit the implementation scope of the present invention, that is, all simple equivalent changes and modifications made according to the scope of the claims of the present invention and the contents of the description of the invention , all still belong to the scope covered by the patent of the present invention.

Claims (14)

1. a broad-band antenna, this broad-band antenna includes:

One first radiation conductor, this first radiation conductor includes:

One grounding parts, this grounding parts has an earth terminal；

One short, this short is electrically connected to this grounding parts and in meandering shape；

One first radiation arm, this first radiation arm is electrically connected to this short one end away from this grounding parts；And

One second radiation arm, this second radiation arm is electrically connected to this short one end away from this grounding parts；And

One second radiation conductor, this second radiation conductor and this first radiation conductor interval arrange and include:

One feeding portion, this feeding portion couples with this first radiation arm and has a feed side supplying feed-in one radiofrequency signal；

One the 3rd radiation arm, 3rd radiation arm is electrically connected to this feeding portion, 3rd radiation arm at least local couples with this first radiation arm, and the 3rd radiation arm at least local in meandering shape, and wherein, 3rd radiation arm has and one is electrically connected to this feeding portion and the first substantially L-shaped radiant section, one is electrically connected to this first radiant section and the second radiant section being substantially u-shaped, and the 3rd radiant section being electrically connected to this second radiant section, wherein this first radiant section forms the serpentine structure of S-shaped together with this second radiant section；And

One the 4th radiation arm, the 4th radiation arm is electrically connected to this feeding portion；

This first radiation arm resonates in one first frequency range, and the 3rd radiation arm resonates in one second frequency range, and this second radiant section of the 3rd radiation arm, this short and this second radiation arm resonate in one the 3rd frequency range, and the 4th radiation arm resonates in one the 4th frequency range.

Broad-band antenna the most according to claim 1, wherein, this short has first metal segments being electrically connected to this grounding parts, one is electrically connected to this first metal segments away from one end of this grounding parts and the second substantially vertical with this first metal segments metal segments, one is electrically connected to this second metal segments away from one end of this first metal segments and the 3rd substantially vertical with this second metal segments metal segments, one is electrically connected to the 3rd metal segments away from one end of this second metal segments and the 4th substantially vertical with the 3rd metal segments metal segments, and substantially vertical with a 4th metal segments fifth metal section, one end of this fifth metal section is electrically connected to the 4th metal segments one end away from the 3rd metal segments, the other end of this fifth metal section is electrically connected to this first radiation arm and this second radiation arm.

Broad-band antenna the most according to claim 1, wherein, this first radiant section local couples with this first radiation arm.

Broad-band antenna the most according to claim 1, wherein, the 3rd radiant section is substantially u-shaped, and this first radiation arm and this second radiation arm are substantially L-shaped.

Broad-band antenna the most according to claim 1, wherein, has a coupling gap between this first radiant section and this first radiation arm of this feeding portion and the 3rd radiation arm, and the width of this coupling gap is 0.4mm～0.8mm.

Broad-band antenna the most according to claim 1, wherein, this feeding portion of this second radiation conductor also has an enclosed slot.

Broad-band antenna the most according to claim 1, wherein, this first frequency range is 704～787MHz, and this second frequency range is 824～960MHz, and the 3rd frequency range is 1710～2170MHz, and the 4th frequency range is 2300～2700MHz.

8. a radio communication device, this radio communication device includes:

One communication module, this communication module is for producing a radiofrequency signal；

One feed assembly, this feed assembly is electrically connected to this communication module to transmit this radiofrequency signal；And

One broad-band antenna, this broad-band antenna includes:

One first radiation conductor, this first radiation conductor has a grounding parts, a short, one first radiation arm and one second radiation arm, this grounding parts has an earth terminal, this short is electrically connected to this grounding parts and in meandering shape, and this first radiation arm and this second radiation arm are electrically connected to this short one end away from this grounding parts；And

One second radiation conductor, this second radiation conductor and this first radiation conductor interval arrange and have a feeding portion, one the 3rd radiation arm and one the 4th radiation arm, this feeding portion couples with this first radiation arm and has a feed side, this feed side is electrically connected to this feed assembly and supplies this radiofrequency signal of feed-in, 3rd radiation arm and the 4th radiation arm are electrically connected to this feeding portion, 3rd radiation arm at least local couple with this first radiation arm and at least locally in meandering shape, and wherein, 3rd radiation arm has one and is electrically connected to this feeding portion and the first substantially L-shaped radiant section, one is electrically connected to this first radiant section and the second radiant section being substantially u-shaped, and the 3rd radiant section being electrically connected to this second radiant section, wherein this first radiant section forms the serpentine structure of S-shaped together with this second radiant section；

This first radiation arm resonates in one first frequency range, and the 3rd radiation arm resonates in one second frequency range, and this second radiant section of the 3rd radiation arm, this short and this second radiation arm resonate in one the 3rd frequency range, and the 4th radiation arm resonates in one the 4th frequency range.

Radio communication device the most according to claim 8, wherein, this short has first metal segments being electrically connected to this grounding parts, one is electrically connected to this first metal segments away from one end of this grounding parts and the second substantially vertical with this first metal segments metal segments, one is electrically connected to this second metal segments away from one end of this first metal segments and the 3rd substantially vertical with this second metal segments metal segments, one is electrically connected to the 3rd metal segments away from one end of this second metal segments and the 4th substantially vertical with the 3rd metal segments metal segments, and substantially vertical with a 4th metal segments fifth metal section, one end of this fifth metal section is electrically connected to the 4th metal segments one end away from the 3rd metal segments, the other end of this fifth metal section is electrically connected to this first radiation arm and this second radiation arm.

Radio communication device the most according to claim 8, wherein, this first radiant section local couples with this first radiation arm.

11. radio communication devices according to claim 8, wherein, the 3rd radiant section is substantially u-shaped, and this first radiation arm and this second radiation arm are substantially L-shaped.

12. radio communication devices according to claim 8, wherein, have a coupling gap between this first radiant section and this first radiation arm of this feeding portion and the 3rd radiation arm, and the width of this coupling gap is 0.4mm～0.8mm.

13. radio communication devices according to claim 8, wherein, this feeding portion of this second radiation conductor also has an enclosed slot.

14. radio communication devices according to claim 8, wherein, this first frequency range is 704～787MHz, and this second frequency range is 824～960MHz, and the 3rd frequency range is 1710～2170MHz, and the 4th frequency range is 2300～2700MHz.