Multi-mode low-SAR (Synthetic Aperture Radar) value antenna module and electronic equipment

Abstract

The utility model discloses a multimode low SAR value antenna module and an electronic device, comprising a first radiation unit, a second radiation unit and a third radiation unit, one end of the first radiation unit and one end of the third radiation unit are oppositely arranged and are provided with a gap, the other end of the third radiation unit is grounded, the other end of the first radiation unit is grounded, and the other end of the second radiation unit is grounded. The first radiation unit is connected with a signal feed point at a preset distance close to the grounding end, a preset length gap is formed in the side, away from the grounding end, of the first radiation unit, one end of the second radiation unit is located in the preset length gap, a gap is reserved between the first radiation unit and one end of the second radiation unit, and the other end of the second radiation unit is grounded. The technical problems that the cost is increased and the user experience is reduced due to the fact that radiation of an antenna to a human body is reduced by introducing an SAR sensor in an existing antenna technology are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to antenna technical field especially relates to a multimode low SAR value antenna module and electronic equipment. BACKGROUND

[0002] The antenna will produce radiation when transmitting signals. The SAR (Specific Absorption Ratio) is used internationally to measure the radiation of the device to the human body. For the same antenna scheme, the greater the radiation power of the antenna, the higher the TRP (Total Radiated Power), the stronger the communication ability of the electronic device, but the corresponding SAR value will also be higher, which cannot meet the regulatory requirements of the SAR value. However, low TRP will cause weak signals of the electronic device, and it is easy to appear the phenomenon of call drop and network drop in actual use, and it may not meet the operator or customer standard. In view of the contradiction between TRP and SAR value, the current scheme is to introduce a SAR sensor, when the human body is close to the antenna, the power of the antenna will be reduced to reduce the radiation to the human body. However, this scheme not only increases the cost of the device, but also reduces the user experience. Therefore, how to realize the improvement of the TRP of the antenna while reducing the SAR value of the antenna without using the SAR sensor is a technical problem to be solved by the technical personnel in the field. SUMMARY

[0003] The utility model provides a multimode low SAR value antenna module and electronic equipment for solving the technical problem of the prior art antenna technology that reduces the radiation of the antenna to the human body by introducing a SAR sensor, which increases the cost and reduces the user experience.

[0004] Therefore, the utility model provides a multimode low SAR value antenna module in the first aspect, which comprises a first radiation unit, a second radiation unit and a third radiation unit.

[0005] One end of the first radiation unit is arranged opposite to one end of the third radiation unit with a gap, the other end of the third radiation unit is grounded, the other end of the first radiation unit is grounded, and a signal feed point is connected to the first radiation unit at a preset distance close to the grounded end.

[0006] A gap of a preset length is formed on the side away from the ground of the grounded end of the first radiation unit.

[0007] One end of the second radiation unit is located in the gap of the preset length and has a gap with the first radiation unit, and the other end of the second radiation unit is grounded.

[0008] Optionally, the first radiation unit has a working frequency band of 1850-2400MHz, the second radiation unit has a working frequency band of 1710-1880MHz, and the third radiation unit has a working frequency band of 2500-2690MHz.

[0009] Optionally, the first radiation unit has an L-shaped structure, the long side of the first radiation unit is located in a horizontal plane, and the short side of the first radiation unit is located in a vertical plane, the preset length gap is arranged on the horizontal plane, and the ground end and the signal feed point of the first radiation unit are extended from the vertical plane.

[0010] Optionally, the second radiation unit comprises a first L-shaped structure and a second L-shaped structure, the long side of the first L-shaped structure is located in the preset length gap, the inner side of the short side of the first L-shaped structure is opposite to the horizontal plane of the first radiation unit and has a gap, and the end of the long side of the second L-shaped structure is connected to the end of the short side of the first L-shaped structure, and the end of the short side of the second L-shaped structure is the ground end of the second radiation unit.

[0011] Optionally, the third radiation unit has an L-shaped structure, the long side of the third radiation unit is located in a horizontal plane, and the short side of the third radiation unit is located in a vertical plane, and the ground end of the third radiation unit is extended from the vertical plane.

[0012] Optionally, the first radiation unit, the second radiation unit and the third radiation unit are resonated in a 1 / 4 wavelength mode.

[0013] Optionally, the first radiation unit, the second radiation unit and the third radiation unit are all made of copper material.

[0014] The utility model discloses a second aspect provides a kind of electronic equipment, and the electronic equipment is provided with processor, radio frequency module and the multi-mode low SAR value antenna module of any one described in first aspect;

[0015] The processor is connected with the radio frequency module, and the radio frequency module is connected with the multi-mode low SAR value antenna module.

[0016] When the electronic equipment transmits or receives signals, the radio frequency module and the multi-mode low SAR value antenna module are used for transmitting or receiving signals.

[0017] Optionally, the electronic equipment is a mobile terminal.

[0018] Optionally, the electronic equipment is a mobile terminal.

[0019] As can be seen from the above technical solutions, the multi-mode low SAR value antenna module provided by the utility model has the following advantages:

[0020] The multi-mode low SAR value antenna module provided by the utility model, the first radiating unit, the second radiating unit and the third radiating unit, one end of the first radiating unit is opposite to one end of the third radiating unit and has a gap, the other end of the third radiating unit is grounded, the other end of the first radiating unit is grounded, a signal feed point is connected to the first radiating unit at a preset distance close to the grounded end, a preset length gap is set up on the side of the grounded end of the first radiating unit away from the ground, one end of the second radiating unit is located in the preset length gap and has a gap with the first radiating unit, and the other end of the second radiating unit is grounded. The multi-mode low SAR value antenna module TRP full channel can reach more than 18.4dBm, and the first radiating unit, the second radiating unit and the third radiating unit couple and excite dispersed energy, and the energy is distributed through different resonant branches, so that the SAR value of the overall antenna module is reduced, and the regulatory requirements can be met without using the SAR sensor. The technical problem that the existing antenna technology reduces the radiation of the antenna to the human body by introducing the SAR sensor, increases the cost and reduces the user experience is solved. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other related drawings according to these drawings without creating labor.

[0022] Figure 1 It is a structure schematic view of the multi-mode low SAR value antenna module provided in the embodiment of the utility model.

[0023] Figure 2 It is an installation schematic view of the multi-mode low SAR value antenna module provided in the embodiment of the utility model on the electronic equipment.

[0024] Figure 3 It is a 1 / 4 current mode schematic view of the multi-mode low SAR value antenna module provided in the embodiment of the utility model.

[0025] Figure 4 It is a 1 / 2 current mode schematic view of the multi-mode low SAR value antenna module provided in the embodiment of the utility model.

[0026] Figure 5 It is a return loss schematic view of the multi-mode low SAR value antenna module provided in the embodiment of the utility model.

[0027] Figure 6A radiation efficiency schematic diagram of a multi-mode low SAR value antenna module provided in the embodiment of the utility model;

[0028] Figure 7 A TRP test data diagram of a multi-mode low SAR value antenna module provided in the embodiment of the utility model;

[0029] Figure 8 A SAR value test data diagram of LTE Band1 / 3 / 7 of a multi-mode low SAR value antenna module provided in the embodiment of the utility model;

[0030] Figure 9 A hotspot distribution diagram of a multi-mode low SAR value antenna module provided in the embodiment of the utility model in LTE Band1;

[0031] Figure 10 A hotspot distribution diagram of a multi-mode low SAR value antenna module provided in the embodiment of the utility model in LTE Band3;

[0032] Figure 11 A hotspot distribution diagram of a multi-mode low SAR value antenna module provided in the embodiment of the utility model in LTE Band7;

[0033] Wherein, the reference numerals are:

[0034] D1, first radiation unit; D2, second radiation unit; D3, third radiation unit; F, signal feed point; G1, first return point; G2, second return point; G3, third return point; L1, first L-shaped structure; L2, second L-shaped structure; 100, electronic device. DETAILED DESCRIPTION

[0035] In order to make the personnel in the technical field better understand the utility model scheme, the technical scheme in the embodiment of the utility model will be described clearly and completely in the embodiment of the utility model below, obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without creative labor are within the scope of the utility model protection.

[0036] For easy understanding, please refer to Figure 1 And Figure 2The utility model provides a kind of embodiment of multi-mode low SAR value antenna module, including first radiating unit D1, second radiating unit D2 and third radiating unit D3.The one end of first radiating unit D1 is oppositely arranged with the one end of third radiating unit D3 and has gap, the other end of third radiating unit D3 is grounded, the other end of first radiating unit D1 is grounded, and signal feed point F is connected with the preset distance of the ground end of first radiating unit D1.The ground side of the ground end of first radiating unit D1 is opened to the preset length gap.The one end of second radiating unit D2 is located in the preset length gap and has gap with first radiating unit D1, and the other end of second radiating unit D2 is grounded.

[0037] It needs to be explained that the multi-mode low SAR value antenna module provided by the utility model is installed on electronic equipment 100.First radiating unit D1 is used as main radiating unit, and signal feed point F and first return point G1 are connected.Signal feed point F is used to directly stimulate the energy of radio frequency signal.First return point G1 is used to control the aperture of first radiating unit D1.First radiating unit D1 generates IFA (inverted-F antenna, inverted F antenna) mode, and resonates in 1 / 4 wavelength mode.The working frequency band of first radiating unit D1 is 1850~2400MHz, and can cover LTE Band 1 / 2 / 40.

[0038] Second radiating unit D2 is connected with second return point G2.Second radiating unit D2 is not directly connected with signal feed point F, and is coupled with first radiating unit D1 to feed electricity.By adjusting the branch size and return ground position of second radiating unit D2, it can resonate in 1 / 4 wavelength mode.The working frequency band of second radiating unit D2 is 1710~1880MHz, and can cover LTE Band 3.

[0039] Third radiating unit D3 is connected with second return point G3.Third radiating unit D3 is not directly connected with signal feed point F, and is coupled with first radiating unit D1 to feed electricity.By adjusting the branch size and return ground position of third radiating unit D3, it can resonate in 1 / 4 wavelength mode.The working frequency band of third radiating unit is 2500~2690MHz, and can cover LTE Band 7 / 38 / 41.

[0040] The measured return loss of the multi-mode low SAR value antenna module provided in the utility model embodiment is as shown in Figure 5 It can be seen from Figure 5 It can be seen that the three resonance modes of the multi-mode low SAR value antenna module generate 3 waveforms respectively, and S11 is below-5dB, which meets the good impedance adaptation of electronic equipment.

[0041] The measured radiation efficiency of the multi-mode low SAR value antenna module provided in the utility model embodiment is as shown in Figure 6As shown, it can be seen that the radiation efficiency of each working frequency band of the multi-mode low-SAR-value antenna module is excellent, and is above-6dB (30%), which can meet the actual use of the electronic device and good emission effect.

[0042] The multi-mode low-SAR-value antenna module provided in the embodiment of the utility model can work at 1710-2690MHz, cover all frequency bands of medium and high frequencies, and does not need an antenna tuner to tune. Through testing, it has good radiation performance in the working frequency band, and the full-channel TRP can reach above 18.4dBm, such as Figure 7 As shown, it meets most customer and operator standards.

[0043] Meanwhile, the multi-mode low-SAR-value antenna module provided in the embodiment, the first radiation unit D1 is directly excited through the signal feed point F, and the radiator body generates a 1 / 4 wavelength IFA mode. In addition, due to the existence of the second and third radiation units D2 and D3, the signal feed point F1 and the second and third return points G2 and G3 form two 1 / 2 wavelength loop modes, respectively, and also resonate in the 1850-2400MHz band. As shown in Figure 3 and Figure 4 As shown, the hot spots are relatively dispersed in one period, and the SAR value is low, as shown in Figure 9 、 Figure 10 and Figure 11 As shown, the second and third radiation units D2 and D3 do not use the signal feed point F for direct excitation, but are coupled through the first radiation unit D1 as a carrier, and the radiation current is dispersedly distributed on the first, second and third radiation units D1 / D2 / D3, so the SAR value is low, as shown in Figure 8 As shown.

[0044] The multi-mode low SAR value antenna module provided by the utility model, including first radiation unit D1, second radiation unit D2 and third radiation unit D3, one end of first radiation unit D1 is opposite to one end of third radiation unit D3 and has a gap, the other end of third radiation unit D3 is grounded, the other end of first radiation unit D1 is grounded, signal feed point F is connected to the preset distance of the grounding end of first radiation unit D1, the grounding side of the grounding end of first radiation unit D1 is provided with a preset length gap, one end of second radiation unit D2 is located in the preset length gap and has a gap with first radiation unit D1, and the other end of second radiation unit D2 is grounded.The multi-mode low SAR value antenna module TRP full channel can reach more than 18.4dBm, and the first radiation unit D1, the second radiation unit D2 and the third radiation unit D3 are coupled and excited to disperse energy, and the energy is shunted by different resonant branches, so that the SAR value of the overall antenna module is reduced, and the regulatory requirements can be met without using SAR sensor.The existing antenna technology reduces the radiation of the antenna to the human body by introducing SAR sensor, which increases the cost and reduces the user experience.

[0045] In one embodiment, the first radiation unit D1 is an L-shaped structure, the long side of the first radiation unit D1 is located in the horizontal plane, the short side is located in the vertical plane, the preset length gap is provided in the horizontal plane, and the grounding end (i.e. the first return point G1) and the signal feed point F of the first radiation unit D1 are extended from the vertical plane. The second radiation unit D2 includes a first L-shaped structure L1 and a second L-shaped structure L2, the long side of the first L-shaped structure L1 is located in the preset length gap, the inner side of the short side of the first L-shaped structure L1 is opposite to the horizontal plane of the first radiation unit D1 and has a gap, the long side end of the second L-shaped structure L2 is connected to the short side end of the first L-shaped structure L1, and the short side end of the second L-shaped structure L2 is the grounding end (i.e. the second return point G2) of the second radiation unit D2. The third radiation unit D3 is an L-shaped structure, the long side of the third radiation unit D3 is located in the horizontal plane, the short side is located in the vertical plane, and the grounding end (i.e. the third return point G3) of the third radiation unit D3 is extended from the vertical plane.

[0046] The first radiation unit D1, the second radiation unit D2 and the third radiation unit D3 can be selected as a metal material, preferably copper material.

[0047] For easy understanding, please refer to Figure 2The utility model discloses still provide an embodiment of electronic equipment, this electronic equipment 100 is provided with processor, radio frequency module and the any kind of multimode low SAR value antenna module group in the utility model various multimode low SAR value antenna module group embodiment, processor is connected with radio frequency module, and radio frequency module is connected with multimode low SAR value antenna module group. When this electronic equipment 100 is transmitting or receiving, through radio frequency module and multimode low SAR value antenna module group transmit or receive signal. The electronic equipment 100 is mobile terminal, specifically can be mobile phone or tablet computer.

[0048] The terms "first", "second", "third" and the like in the utility model are used to distinguish similar objects, and do not have to be used to describe a particular order or sequence. It should be understood that the data used in this way can be exchanged under appropriate circumstances, so that the embodiments of the application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a series of systems, products or devices includes elements that are not necessarily limited to those clearly listed, but can include other steps or elements that are not clearly listed or inherent to these products or devices.

[0049] The above-described embodiments are merely used to illustrate the technical solutions of the utility model, rather than limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A multi-mode low SAR value antenna module, characterized in that, It includes a first radiating unit, a second radiating unit, and a third radiating unit; One end of the first radiating unit is positioned opposite to one end of the third radiating unit with a gap between them. The other end of the third radiating unit is grounded, and the other end of the first radiating unit is grounded. A signal feed point is connected to the first radiating unit at a predetermined distance from the grounded end. A pre-set length notch is provided on the side away from the grounding end of the first radiating element near the grounding end; One end of the second radiating unit is located within the preset length notch and has a gap with the first radiating unit, while the other end of the second radiating unit is grounded.

2. The multi-mode low SAR value antenna module according to claim 1, characterized in that, The first radiating unit operates in the frequency band of 1850~2400MHz, the second radiating unit operates in the frequency band of 1710~1880MHz, and the third radiating unit operates in the frequency band of 2500~2690MHz.

3. The multi-mode low SAR value antenna module according to claim 1, characterized in that, The first radiating unit has an L-shaped structure. The long side of the first radiating unit is a horizontal plane, and the short side is a vertical plane. The pre-set length notch is opened on the horizontal plane, and the grounding terminal and signal feed point of the first radiating unit extend out from the vertical plane.

4. The multi-mode low SAR value antenna module according to claim 3, characterized in that, The second radiating unit includes a first L-shaped structure and a second L-shaped structure. The long side of the first L-shaped structure is located within the preset length notch. The inner side of the short side of the first L-shaped structure is opposite to the horizontal plane of the first radiating unit and has a gap. The end of the long side of the second L-shaped structure is connected to the end of the short side of the first L-shaped structure. The end of the short side of the second L-shaped structure is the grounding terminal of the second radiating unit.

5. The multi-mode low SAR value antenna module according to claim 3 or 4, characterized in that, The third radiating unit has an L-shaped structure, with the long side of the third radiating unit being a horizontal plane and the short side being a vertical plane. The grounding terminal of the third radiating unit extends out from the vertical plane.

6. The multi-mode low SAR value antenna module according to claim 1, characterized in that, The first radiating element resonates in a 1 / 4 wavelength mode, the second radiating element resonates in a 1 / 4 wavelength mode, and the third radiating element resonates in a 1 / 4 wavelength mode.

7. The multi-mode low SAR value antenna module according to claim 1, characterized in that, The first radiating unit, the second radiating unit, and the third radiating unit are all made of copper.

8. An electronic device, characterized in that, The electronic device is equipped with a processor, a radio frequency module, and a multimode low SAR value antenna module as described in any one of claims 1-7; The processor is connected to the radio frequency module, and the radio frequency module is connected to the multimode low SAR value antenna module; When the electronic device transmits or receives signals, it does so through the radio frequency module and the multimode low SAR antenna module.

9. The electronic device according to claim 8, characterized in that, The electronic device is a mobile terminal.

10. The electronic device according to claim 9, characterized in that, The electronic device is a mobile phone.

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