Antenna and wireless communication device with same
Patent Information
- Application Number
- CN202310929723.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-07-26
- Publication Date
- 2025-01-28
AI Technical Summary
Existing wireless communication devices need to support more frequency bands, making antenna design difficult to meet broadband requirements.
Design an antenna that includes circular radiation, feedback, second radiation body, and third radiation body, and the coupling design of the second and third and third radiation bodies through the advanced steps of the feedback to the part to stimulate low, medium and medium, medium and medium, medium and medium, medium and medium and medium and medium and medium and medium and medium and medium and medium and medium and medium and medium and medium and medium and medium and medium and medium -sized and medium -sized, medium and middle -aged and medium -sized High -frequency radiation signal.
The effective radiation of low, medium, and high -frequency bands is realized, and the broadband needs of users are met, while reducing power dispersing and improving the continuous effectiveness of high -frequency radiation.
Smart Images
Figure CN119381754A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of wireless communications, and in particular to an antenna and a wireless communication device having the antenna. Background Art
[0002] With the rapid development of wireless communication technology, the transmission speed of mobile communication networks has become faster, but the frequency bands that wireless communication devices need to support have also increased. Therefore, it is urgent to provide antennas with wider frequency bands to meet the antenna requirements of electronic devices. Summary of the invention
[0003] Based on the above problems, the present application provides an antenna and a wireless communication device having the antenna to meet broadband requirements.
[0004] According to a first aspect of the present application, there is provided an antenna, comprising: a first radiator, which is a ring radiator provided with an opening; a feeding portion, wherein one end of the feeding portion is connected to a side of the first radiator away from the opening, and is used to feed current to the first radiator, wherein the feeding portion comprises a first feeding arm and a second feeding arm, wherein the first end of the first feeding arm is connected to the first radiator, and the second end of the first feeding arm is connected to the first end of the second feeding arm; a second radiator and a third radiator, wherein the second radiator and the third radiator are respectively arranged on both sides of the first feeding arm, and the second radiator and the third radiator are both spaced apart from the first radiator and the feeding portion, and the second radiator and the third radiator are mutually coupled with the feeding portion; a grounding portion, wherein the grounding portion is provided with a slot, the slot is used to accommodate an end of the second feeding arm, and the grounding portion is spaced apart from the feeding portion, the second radiator, and the third radiator; and a dielectric substrate, wherein the first radiator, the feeding portion, the second radiator, the third radiator, and the grounding portion are coplanarly arranged on a surface on the same side of the dielectric substrate.
[0005] A second aspect of the present application provides a wireless communication device, comprising the antenna as described above.
[0006] The antenna provided by the present application, through the structural design as described above, enables the first radiator to excite low-frequency radiation signals and medium-frequency radiation signals after the current is fed into the feeding part, and the second radiator and the third radiator are mutually coupled with the feeding part to excite high-frequency radiation signals. In this way, the antenna provided by the present application can provide radiation signals in low, medium and high frequency radiation bands to meet the user's broadband needs. Moreover, the feeding part can reduce power dissipation and improve the continuous effectiveness of the high-frequency radiation of the antenna through the progressive step-type structural design of the first feeding arm and the second feeding arm; the second radiator and the third radiator are arranged on both sides of the feeding part, and are spaced apart from the feeding part and the first radiator, which can optimize the coupling coefficient and improve the signal quality of the excited high-frequency signal. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Figure 1 A schematic diagram of the structure of an antenna provided in one embodiment of the present application.
[0008] Figure 2 for Figure 1 Schematic diagram of the dimensions of the antenna shown.
[0009] Figure 3 for Figure 1 Shown is a graph of the return loss of the antenna.
[0010] Figure 4A This is the radiation pattern of the antenna when it operates at the center frequency of the first radiation frequency band.
[0011] Figure 4B This is the radiation pattern of the antenna when it operates at the center frequency of the second radiation frequency band.
[0012] Figure 4C This is the radiation pattern when the antenna operates at the center frequency of the third radiation frequency band.
[0013] Figure 4D This is the radiation pattern diagram when the antenna operates at the center frequency of the fourth radiation frequency band.
[0014] Figure 5A The antenna gain and radiation efficiency diagram when the antenna works in 4G B3 mode.
[0015] Figure 5B The antenna gain and radiation efficiency diagram when the antenna works in 4G B28 and B8 modes.
[0016] Figure 5C The antenna gain and radiation efficiency diagram when the antenna works in 4G B7 mode.
[0017] Figure 6 A structural block diagram of a wireless communication device provided in one embodiment of the present application.
[0018] Main component symbols
[0019] Wireless communication device 20
[0020] Antenna 10
[0021] The first radiator 110
[0022] The first radiation arm 111
[0023] The second radiation arm 112
[0024] The third radiation arm 113
[0025] The fourth radiation arm 114
[0026] Opening 115
[0027] The second radiator 120
[0028] The third radiator 130
[0029] Feeding section 140
[0030] First feeding arm 141
[0031] The second feeding arm 142
[0032] Grounding portion 150
[0033] Slotting 151
[0034] First slot 1511
[0035] Second slot 1512
[0036] Dielectric substrate 160
[0037] The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION
[0038] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.
[0040] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.
[0041] With the rapid development of wireless communication technology, the transmission speed of mobile communication networks has become faster, but the frequency bands that wireless communication devices need to support have also increased. Therefore, it is urgent to provide antennas with wider frequency bands to meet the antenna requirements of electronic devices.
[0042] To do this, see Figure 1In one embodiment of the present application, an antenna 10 is provided for transmitting and receiving radio waves to transmit and exchange wireless signals. It is understood that the antenna 10 can be set in a wireless communication device 20 (see FIG. 1 ), such as a wireless terminal device, a customer premise equipment (CPE), a router, and a set top box (Set Top Box). Figure 6 )superior.
[0043] The antenna 10 includes a first radiator 110, a second radiator 120, a third radiator 130, a feeding portion 140, a grounding portion 150 and a dielectric substrate 160. The first radiator 110, the second radiator 120, the third radiator 130, the feeding portion 140, the grounding portion 150 and the dielectric substrate 160 are coplanarly disposed on the surface of the same side of the dielectric substrate 160.
[0044] Specifically, the first radiator 110 is a ring-shaped radiator provided with an opening.
[0045] One end of the feeding portion 140 is connected to a side of the first radiator 110 away from the opening, and is used to feed current to the first radiator 110. The feeding portion 140 includes a first feeding arm 141 and a second feeding arm 142. The first end of the first feeding arm 141 is connected to the first radiator 110. The second end of the first feeding arm 141 is connected to the first end of the second feeding arm 142. The second end of the second feeding arm 142 is spaced apart from the ground portion 150.
[0046] The second radiator 120 and the third radiator 130 are disposed near one end of the feeding portion 140 connected to the first radiator 110. The second radiator 120 and the third radiator 130 are disposed on both sides of the feeding portion 140, respectively, and the second radiator 120 is spaced apart from the first radiator 110 and the feeding portion 140, and the third radiator 130 is spaced apart from the first radiator 110 and the feeding portion 140. The second radiator 120 and the third radiator 130 are coupled to the feeding portion 140 to receive the current fed by the feeding portion 140.
[0047] The grounding portion 150 defines a slot 151 for accommodating the other end of the feeding portion 140 away from the first radiator 110 , and the grounding portion 150 is spaced apart from the feeding portion 140 , the second radiator 120 and the third radiator 130 .
[0048] In the present application, after the first radiator 110 is fed with current by the feed part 140, low-frequency radiation signals and medium-frequency radiation signals are excited. After the second radiator 120 and the third radiator 130 are coupled with the feed part 140, high-frequency radiation signals are excited. In this way, the antenna 10 provided by the present application can provide radiation signals in low, medium and high frequency radiation bands to meet the user's broadband needs. Moreover, the feed part 140 can reduce power dissipation and improve the continuous effectiveness of the high-frequency radiation of the antenna 10 through the progressive step structure design of the first feed arm 141 and the second feed arm 142; the second radiator 120 and the third radiator 130 are arranged on both sides of the feed part 140, and are spaced from the feed part 140 and the first radiator 110, which can optimize the coupling coefficient and improve the signal quality of the excited high-frequency signal.
[0049] It is understandable that in the present application, the dielectric substrate 160 is a printed circuit board (PCB), which can be made of a dielectric material such as epoxy resin glass fiber (FR4). A feeding source (not shown) is also provided on the dielectric substrate 160 to feed a current signal to the antenna 10. For example, in the present application, the thickness of the dielectric substrate 160 can be 0.8 mm, the dielectric constant can be 4.4, and the dielectric loss tangent can be 0.0245.
[0050] It is understandable that the first radiator 110 , the second radiator 120 , the third radiator 130 , the feeding portion 140 and the grounding portion 150 may all be a coating made of a metal material or other conductive materials.
[0051] Please continue reading Figure 1 In some embodiments, the first radiator 110 includes a first radiating arm 111, a second radiating arm 112, a third radiating arm 113 and a fourth radiating arm 114. The first radiating arm 111, the second radiating arm 112, the third radiating arm 113 and the fourth radiating arm 114 are all in a straight strip shape.
[0052] Specifically, both ends of the first radiation arm 111 are respectively connected approximately perpendicularly to the second radiation arm 112 and the third radiation arm 113. The second radiation arm 112 and the third radiation arm 113 are arranged approximately parallel to the same side of the first radiation arm 111. The fourth radiation arm 114 is approximately perpendicularly connected to an end of the third radiation arm 113 away from the first radiation arm 111. The fourth radiation arm 114 is approximately parallel to the first radiation arm 111. The length of the second radiation arm 112 is less than the length of the third radiation arm 113. The length of the fourth radiation arm 114 is less than the length of the first radiation arm 111. In this way, the second radiation arm 112 and the fourth radiation arm 114 are separated to form an opening 115.
[0053] The first end of the first feeding arm 141 is also connected to the first radiation arm 111. Thus, when current is fed from the first feeding arm 141 of the feeding portion 140, the current flows through the first radiation arm 111, the second radiation arm 112, the third radiation arm 113 and the fourth radiation arm 114 to excite the B28 / B8 / B3 mode of 4G, thereby generating the corresponding first radiation frequency band, the second radiation frequency band and the third radiation frequency band.
[0054] In some embodiments, the first radiation frequency band includes 703-803 MHz, the second radiation frequency band includes 880-960 MHz, and the third radiation frequency band includes 1710-1880 MHz.
[0055] It is understandable that the first radiating arm 111 , the second radiating arm 112 , the third radiating arm 113 and the fourth radiating arm 114 in the present application together form a radiator that is substantially in the shape of a tuning fork, which can improve the reflection coefficient of the first radiator 110 generating low-frequency radiation signals and intermediate-frequency radiation signals.
[0056] In some embodiments, the second radiator 120 and the third radiator 130 are both approximately trapezoidal sheets. The longer bottom sides of the second radiator 120 and the third radiator 130 are both disposed close to the first feeding arm 141. The second radiator 120 and the third radiator 130 have approximately the same size. Thus, the second radiator 120 and the third radiator 130 are symmetrical with each other with the first feeding arm 141 as the axis. Specifically, in the embodiment of the present application, the second radiator 120 and the third radiator 130 are both approximately right-angled trapezoidal.
[0057] It is understandable that the second radiator 120 and the third radiator 130 are coupled with the feed portion 140 to excite the B7 mode of 4G, thereby generating a fourth radiation frequency band. The fourth radiation frequency band includes 2500-2690MHz. Further, in the present application, the center frequencies of the first radiation frequency band, the second radiation frequency band, the third radiation frequency band and the fourth radiation frequency band generated by the antenna 10 are 753MHz, 920MHz, 1795MHz and 2595MHz respectively.
[0058] Furthermore, by adjusting the angles between the second radiator 120 and the third radiator 130 and the ground portion 150, that is, adjusting the angle between the hypotenuse of the right-angled trapezoid forming the second radiator 120 and the long side of the ground portion 150, and the angle between the hypotenuse of the right-angled trapezoid forming the third radiator 130 and the long side of the ground portion 150, the antenna coupling coefficient can be adjusted, thereby improving the working characteristics of the antenna 10 when radiating high-frequency signals.
[0059] In some embodiments, the width of the first feed arm 141 is greater than the width of the second feed arm 142, and the length of the first feed arm 141 is less than the length of the second feed arm 142. Thus, a step-by-step structure design can be achieved by adjusting the size relationship between the width and length of the first feed arm 141 and the second feed arm 142.
[0060] In some embodiments, the slot 151 of the grounding portion 150 includes a first slot 1511 and a second slot 1512. The opening of the first slot 1511 is in a straight strip shape. The second slot 1512 continues to extend from the end of the first slot 1511 and is in a trumpet shape. The second feed arm 142 extends from one end of the first feed arm 141 to the inside of the first slot 1511.
[0061] Please continue reading Figure 2 In some embodiments, the length L1 of the first radiation arm 111 is 19 mm, and the width W1 of the first radiation arm 111 is 3 mm. The length L2 of the second radiation arm 112 is 28 mm, and the width W2 of the second radiation arm 112 is 5 mm. The length L3 of the third radiation arm 113 is 44 mm, and the width W3 of the third radiation arm 113 is 5 mm. The length L4 of the fourth radiation arm 114 is 10 mm, and the width W4 of the fourth radiation arm 114 is 6 mm.
[0062] The height H of the second radiator 120 is 6 mm, the width W5 of the upper bottom side of the second radiator 120 is 7 mm, and the width W6 of the lower bottom side of the second radiator 120 is 13 mm.
[0063] The length L8 of the first feeding arm 141 is 25 mm, and the width W8 of the first feeding arm 141 is 6 mm. The length L7 of the second feeding arm 142 is 49.5 mm, and the width W7 of the second feeding arm 142 is 4.5 mm.
[0064] The length L9 of the grounding portion 150 is 93 mm, and the width W9 of the grounding portion 150 is 22 mm. The length L11 of the first slot 1511 is 36 mm, and the width W11 of the first slot 1511 is 7 mm.
[0065] The length L12 of the dielectric substrate 160 is 160 mm, and the width W9 of the dielectric substrate 160 is 22 mm.
[0066] Please continue reading Figure 3 , Figure 3 The return loss curve of the antenna 10 provided in this application is shown in FIG. Figure 3 It can be seen that the input return loss (ie, S11) of the antenna 10 is lower than -10 dB. Furthermore, when the antenna 10 operates in the B28 frequency band, the B3 frequency band, and the B7 frequency band, the input return loss is also lower than -15 dB.
[0067] Please continue reading Figure 4A-4D , Figure 4A-4D The radiation pattern diagrams of the antenna 10 when it works at the center frequency of the first radiation frequency band, the second radiation frequency band, the third radiation frequency band and the fourth radiation frequency band respectively. Figure 4A-4D It can be seen that the antenna 10 provided in the present application can achieve omnidirectional radiation in various frequency bands, which conforms to the characteristics of a monopole antenna.
[0068] Please continue reading Figure 5A-5C ,in, Figure 5A is a diagram of antenna gain and radiation efficiency when antenna 10 operates in 4G B3 mode; Figure 5B The antenna gain and radiation efficiency diagram when the antenna 10 works in 4G B28 and B8 modes; Figure 5C Graph showing antenna gain and radiation efficiency when antenna 10 works in 4G B7 mode. Figure 5A The curve S511 in FIG. 5 is an antenna gain curve when the antenna 10 works in the 4G B3 mode, and the curve S512 is a radiation efficiency curve when the antenna 10 works in the 4G B3 mode; Figure 5B The curve S521 in FIG. 1 is an antenna gain curve when the antenna 10 works in 4G B28 and B8 modes, and the curve S522 is a radiation efficiency curve when the antenna 10 works in 4G B28 and B8 modes; Figure 5C The curve S531 in FIG. 1 is the antenna gain curve when the antenna 10 works in the 4G B7 mode, and the curve S532 is the radiation efficiency curve when the antenna 10 works in the 4G B7 mode. Figure 5A-5C It can be seen that the antenna 10 provided in the present application, when operating at the center frequencies of the first radiation frequency band, the second radiation frequency band, the third radiation frequency band and the fourth radiation frequency band, the corresponding maximum antenna gains can reach 2.05dBi, 1.89dBi, 4.07dBi and 3.53dBi respectively, and when the antenna 10 operates at each center frequency, the radiation efficiency is above 85%.
[0069] In summary, the antenna 10 provided in the present application meets the antenna design requirements and can satisfy the broadband needs of users.
[0070] Please continue reading Figure 6 The present application also provides a wireless communication device 20. The wireless communication device 20 includes an antenna 10 to communicate with other electronic devices through the antenna 10. It can be understood that the wireless communication device 20 includes but is not limited to wireless terminal devices (such as mobile phones, laptops, etc.), customer premise equipment (Customer Premise Equipment, CPE), routers and set top boxes (Set Top Box), etc.
[0071] The above embodiments are only used to illustrate the technical solution of the present application and are not intended to limit it. Although the present application is described in detail with reference to the above preferred embodiments, those skilled in the art should understand that the technical solution of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present application. Those skilled in the art can also make other changes within the spirit of the present application and use them in the design of the present application, as long as they do not deviate from the technical effects of the present application. These changes made in accordance with the spirit of the present application should be included in the scope of protection claimed in the present application.
Claims
1. An antenna, characterized in that: The antenna comprises: A first radiator, wherein the first radiator is a ring-shaped radiator provided with an opening; a feeding portion, one end of which is connected to a side of the first radiator away from the opening, for feeding current to the first radiator, wherein the feeding portion comprises a first feeding arm and a second feeding arm, the first end of the first feeding arm is connected to the first radiator, and the second end of the first feeding arm is connected to the first end of the second feeding arm; A second radiator and a third radiator, wherein the second radiator and the third radiator are respectively arranged on both sides of the first feeding arm, and the second radiator and the third radiator are spaced apart from the first radiator and the feeding portion, and the second radiator and the third radiator are coupled to the feeding portion; A grounding portion, wherein the grounding portion is provided with a slot, wherein the slot is used to accommodate the end of the second feeding arm, and the grounding portion is spaced apart from the feeding portion, the second radiator, and the third radiator; The dielectric substrate, the first radiator, the feeding portion, the second radiator, the third radiator and the grounding portion are coplanarly arranged on a surface of the same side of the dielectric substrate.
2. The antenna according to claim 1, characterized in that: The first radiator includes a first radiating arm, a second radiating arm, a third radiating arm and a fourth radiating arm, two ends of the first radiating arm are respectively connected to the second radiating arm and the third radiating arm, the second radiating arm and the third radiating arm are arranged on the same side of the first radiating arm, the fourth radiating arm is connected to an end of the third radiating arm away from the first radiating arm, the length of the second radiating arm is smaller than the length of the third radiating arm, the length of the fourth radiating arm is smaller than the length of the first radiating arm, and the first end of the first feed arm is connected to the first radiating arm.
3. The antenna according to claim 2, characterized in that: When the current is fed from the feeding portion, the current flows through the first radiation arm, the second radiation arm, the third radiation arm and the fourth radiation arm to stimulate a first radiation frequency band, a second radiation frequency band and a third radiation frequency band.
4. The antenna according to claim 3, characterized in that: The first radiation frequency band includes 703-803 MHz, the second radiation frequency band includes 880-960 MHz, and the third radiation frequency band includes 1710-1880 MHz.
5. The antenna according to claim 1, wherein: The second radiator and the third radiator are both trapezoidal sheets, and the longer bottom sides of the second radiator and the third radiator are both arranged close to the first feeding arm.
6. The antenna according to claim 1, wherein: The second radiator and the third radiator are coupled with the feeding portion to excite a fourth radiation frequency band.
7. The antenna according to claim 6, characterized in that: The fourth radiation frequency band includes 2500-2690 MHz.
8. The antenna according to claim 1, wherein: The width of the first feeding arm is greater than the width of the second feeding arm, and the length of the first feeding arm is less than the length of the second feeding arm.
9. The antenna according to claim 1, characterized in that: The slot includes a first slot and a second slot, the opening of the first slot is in a straight strip shape, the second slot continues to extend from the end of the first slot and is in a trumpet shape, and the second feed arm extends from one end of the first feed arm away from the first feed arm into the first slot.
10. A wireless communication device, characterized in that: The wireless communication device comprises the antenna according to any one of claims 1 to 9.