Antenna Module and Electronic Device

Abstract

The present invention provides an antenna module and an electronic device. The antenna module includes first, second, and third antenna radiators, and first, second, and third ground radiators. The first antenna radiator includes a first feeding end. The second antenna radiator extends from the first antenna radiator. The third antenna radiator extends from the first feeding end. The first ground radiator is adjacent to the first and second antenna radiators, and there is a first coupling gap between the first ground radiator and the first and second antenna radiators. The second ground radiator is adjacent to the second antenna radiator, and there is a second coupling gap between the second ground radiator and the second antenna radiator. The third ground radiator is adjacent to the first and second antenna radiators, there is a third coupling gap between the third ground radiator and the first antenna radiator, and there is a fourth coupling gap between the third ground radiator and the second antenna radiator.

Description

Technical Field

[0001] The present invention relates to an antenna module and an electronic device, and particularly to a multi-band antenna module and an electronic device having such an antenna module. Background Art

[0002] How to have a multi-band antenna module with good performance is the current research direction. Summary of the Invention

[0003] One object of the present invention is to provide an antenna module having multi-band characteristics.

[0004] Another object of the present invention is to provide an electronic device having such an antenna module.

[0005] An antenna module of the present invention includes a first antenna totem. The first antenna totem includes a first antenna radiator, a second antenna radiator, a third antenna radiator, a first ground radiator, a second ground radiator, and a third ground radiator. The first antenna radiator includes a first feeding end. The second antenna radiator extends from the first antenna radiator. The third antenna radiator extends from the first feeding end in a direction away from the second antenna radiator. The first ground radiator is adjacent to the first antenna radiator and the second antenna radiator, and there is a first coupling gap between the first ground radiator and the first antenna radiator and the second antenna radiator. The second ground radiator is adjacent to the second antenna radiator, and there is a second coupling gap between the second ground radiator and the second antenna radiator. The third ground radiator is adjacent to the first antenna radiator and the second antenna radiator. There is a third coupling gap between the third ground radiator and the first antenna radiator, and there is a fourth coupling gap between the third ground radiator and the second antenna radiator. The first antenna radiator and the third ground radiator resonate to produce a first frequency band and a second frequency band through the third coupling gap. A part of the first antenna radiator, the second antenna radiator, and the third ground radiator resonate to produce a third frequency band and a fourth frequency band through the fourth coupling gap. The third antenna radiator resonates to produce a fifth frequency band and a sixth frequency band.

[0006] In an embodiment of the present invention, the above-mentioned first antenna totem further includes a fourth antenna radiator extending from the second antenna radiator and located beside the third ground radiator, and there is a fifth coupling gap between the third ground radiator and the fourth antenna radiator.

[0007] In an embodiment of the present invention, the above-mentioned first ground radiator includes a first grounding end, and the first grounding end is floatingly connected to a system ground plane.

[0008] In an embodiment of the present invention, the above-mentioned second ground radiator includes a second grounding end, and a capacitor is connected in series between the second grounding end and a system ground plane.

[0009] In an embodiment of the present invention, the above-mentioned third grounding radiator includes a third grounding end, a capacitor is connected in series between the third grounding end and a system ground plane, and the third grounding end is connected to a specific absorption rate (SAR) sensor circuit.

[0010] In an embodiment of the present invention, the above-mentioned third grounding radiator includes a relief hole located inside.

[0011] In an embodiment of the present invention, the above-mentioned antenna module further includes a second antenna totem, which is spaced from the first antenna totem by a distance between 10 millimeters and 30 millimeters. The second antenna totem includes a fifth antenna radiator and a fourth grounding radiator. The fifth antenna radiator includes a second feeding end. The fourth grounding radiator is adjacent to the fifth antenna radiator and includes a fourth grounding end.

[0012] An electronic device of the present invention includes a housing, a bracket, and the above-mentioned antenna module. The housing includes a narrow border area. The bracket is disposed inside the housing and located in the narrow border area. The antenna module is disposed on multiple surfaces of the bracket.

[0013] In an embodiment of the present invention, the above-mentioned electronic device further includes a screen metal part, which is disposed inside the housing and beside the antenna module. The part of the first antenna totem facing the screen metal part is stepped.

[0014] In an embodiment of the present invention, the above-mentioned electronic device further includes a metal back cover, which is close to the third grounding radiator of the first antenna totem. A sixth coupling gap is formed between the metal back cover and the third grounding radiator.

[0015] Based on the above, the second antenna radiator of the antenna module of the present invention extends from the first antenna radiator. The third antenna radiator extends from the first feeding end and in a direction away from the second antenna radiator. The first grounding radiator is adjacent to the first antenna radiator and the second antenna radiator, and there is a first coupling gap between the first grounding radiator and the first antenna radiator and the second antenna radiator. The second grounding radiator is adjacent to the second antenna radiator, and there is a second coupling gap between the second grounding radiator and the second antenna radiator. The third grounding radiator is adjacent to the first antenna radiator and the second antenna radiator. There is a third coupling gap between the third grounding radiator and the first antenna radiator. There is a fourth coupling gap between the third grounding radiator and the second antenna radiator. Through the above design, the first antenna radiator and the third grounding radiator resonate the first frequency band and the second frequency band through the third coupling gap. A part of the first antenna radiator, the second antenna radiator, and the third grounding radiator resonate the third frequency band and the fourth frequency band through the fourth coupling gap. The third antenna radiator resonates the fifth frequency band and the sixth frequency band. Therefore, the antenna module of the present invention can have multi-frequency characteristics. Description of the Drawings

[0016] Figure 1 It is a schematic diagram of an antenna module according to an embodiment of the present invention.

[0017] Figure 2 It is Figure 1 a simple schematic diagram after the antenna module is unfolded flat.

[0018] Figures 3 to 6 It is Figure 1 a schematic diagram of the antenna module of at different angles when it is disposed on the bracket of the electronic device.

[0019] Figure 7 It is a partial side cross-sectional schematic diagram of an electronic device according to an embodiment of the present invention.

[0020] Figure 8 It is Figure 1 a graph of the relationship between the frequency and VSWR of the antenna module of .

[0021] Figure 9 It is Figure 1 a graph of the relationship between the frequency and isolation of the antenna module of .

[0022] Figure 10 It is Figure 1 a graph of the relationship between the frequency and antenna efficiency of the antenna module of .

[0023] The reference numerals are as follows:

[0024] A1 to A8, B1 to B6, D1 to D7, F1, F2, G1 to G4: positions

[0025] C1: the first coupling gap

[0026] C2: the second coupling gap

[0027] C3: the third coupling gap

[0028] C4: the fourth coupling gap

[0029] C5: the fifth coupling gap

[0030] C6: the sixth coupling gap

[0031] E1, E2: relief holes

[0032] L1, L5: distances

[0033] L2: width

[0034] L3: height

[0035] L4: pitch

[0036] 1: electronic device

[0037] 10: bracket

[0038] 12: Lower surface

[0039] 14: First side surface

[0040] 16: Upper surface

[0041] 18: Second side surface

[0042] 20: RF signal terminal

[0043] 21: System ground plane

[0044] 22: Capacitor

[0045] 25: Specific Absorption Rate (SAR) sensor circuit

[0046] 30: Metal back cover

[0047] 40: Housing

[0048] 42: Narrow border area

[0049] 50: Screen metal part

[0050] 60: Antenna module

[0051] 100: First antenna totem

[0052] 110: First antenna radiator

[0053] 120: Second antenna radiator

[0054] 130: First ground radiator

[0055] 140: Second ground radiator

[0056] 150: Third antenna radiator

[0057] 160: Fourth antenna radiator

[0058] 170: Third ground radiator

[0059] 200: Second antenna totem

[0060] 210: Fifth antenna radiator

[0061] 220: Fourth ground radiator Detailed implementation manner

[0062] Figure 1 It is a schematic diagram of an antenna module according to an embodiment of the present invention. Please refer to Figure 1, in this embodiment, the antenna module 60 includes a first antenna totem 100 and a second antenna totem 200. The first antenna totem 100 is, for example, an LTE antenna, and the second antenna totem 200 is, for example, a WiFi antenna, but the antenna module 60 is not limited thereto. From Figure 1 It can be seen that, in this embodiment, the antenna module 60 is in a three-dimensional shape, and the width can be reduced to be applied in a narrow bezel and limited-size space, and a multi-band effect can be provided.

[0063] Due to the complex shape of the three-dimensional antenna module 60, for a clearer representation, Figure 2 is Figure 1 a simple schematic diagram of the antenna module after being flattened out, to facilitate understanding of the relative relationship between the radiators. Figures 3 to 6 is Figure 1 a schematic diagram of the antenna module at different angles disposed on the bracket 10 of the electronic device.

[0064] The three-dimensional antenna module 60 can be formed on the bracket 10 (labeled in Figure 7 ) of the electronic device (labeled in Figure 3 ) by means of Laser Direct Structuring (LDS) technology, flexible circuit boards or copper foil attachment, etc., and can be distributed along multiple surfaces of the bracket 10. Figure 3 Shows the lower surface 12 of the bracket 10. Figure 4 Shows the first side surface 14 and the upper surface 16 of the bracket 10. Figure 5 Shows the upper surface 16 of the bracket 10. Figure 6 Shows the second side surface 18 of the bracket 10. In the embodiment of the present invention, the material of the bracket 10 of the electronic device can be plastic.

[0065] Please also refer to Figures 1 to 6 , in this embodiment, the first antenna totem 100 includes a first antenna radiator 110 (positions F1, A1 - A3), a second antenna radiator 120 (positions A2, A4 - A6), a third antenna radiator 150 (positions F1, B5, B6), a first ground radiator 130 (positions G1, B1, B2), a second ground radiator 140 (positions G2, B3, B4), and a third ground radiator 170 (positions G3, D1 - D7).

[0066] As Figure 1As shown, the first antenna radiator 110 (at positions F1, A1 to A3), the second antenna radiator 120 (at positions A2, A4 to A6), the third antenna radiator 150 (at positions F1, B5, B6), the first ground radiator 130 (at positions G1, B1, B2), the second ground radiator 140 (at positions G2, B3, B4), and the third ground radiator 170 (at positions G3, D1 to D7) form a three-dimensional structure.

[0067] The first antenna radiator 110 (at positions F1, A1 to A3) includes a first feeding end (at position F1). The second antenna radiator 120 (at positions A2, A4 to A6) extends from the first antenna radiator 110. Figure 2 It can be seen that the extending direction (to the right) of the section of the second antenna radiator 120 at positions A2, A4 is opposite to the extending direction (to the left) of the section of the first antenna radiator 110 at positions A2, A3. The third antenna radiator 150 (at positions F1, B5, B6) extends from the first feeding end (at position F1) and extends to the left away from the second antenna radiator 120.

[0068] The first ground radiator 130 (at positions G1, B1, B2) is in an inverted L shape and is arranged beside the first antenna radiator 110 and the second antenna radiator 120, and there is a first coupling gap C1 between the section of the first antenna radiator 110 at positions A1, A2 and the section of the second antenna radiator 120 at positions A2, A4. The first ground radiator 130 includes a first grounding end (at position G1).

[0069] The second ground radiator 140 (at positions G2, B3, B4) is in an inverted L shape and is arranged beside the section of the second antenna radiator 120 at positions A4, A5, and there is a second coupling gap C2 between the second ground radiator 140 and the second antenna radiator 120. The second ground radiator 140 includes a second grounding end (at position G2).

[0070] The third ground radiator 170 (at positions G3, D1 to D7) is arranged beside the first antenna radiator 110 and the second antenna radiator 120. Figure 2 It can be seen that the third ground radiator 170 (at positions G3, D1 to D7) is approximately in an inverted U shape, and the first antenna radiator 110 and the second antenna radiator 120 are located inside the inverted U shape. The third ground radiator 170 includes a third grounding end (at position G3). In addition, the third ground radiator 170 includes relief holes E1, E2 inside for a mechanism member (such as a hook) to pass through. The line width of the third ground radiator 170 beside the relief holes E1, E2 is about 1 millimeter.

[0071] There is a third coupling gap C3 between the section of the third ground radiator 170 at position D5 and the sections of the first antenna radiator 110 at positions A2 and A3, and there is a fourth coupling gap C4 between the sections of the third ground radiator 170 at positions D and D3 and the sections of the second antenna radiator 120 at positions A5 and A6.

[0072] In this embodiment, the first antenna radiator 110 (at positions F1, A1 - A3) and the third ground radiator 170 (at positions G3, D1 - D7) resonate a first frequency band and a second frequency band through the third coupling gap C3. The first frequency band is, for example, 698 MHz, and the second frequency band is, for example, the second harmonic of the first frequency band, 1710 MHz. The path of the fourth ground radiator 220 at positions D6 and D7 is a low-frequency extension path. In one embodiment, the first antenna radiator 11 (at positions F1, A1 - A3) and the third ground radiator 170 (at positions G3, D1 - D7) can also resonate the third harmonic of the first frequency band through the third coupling gap C3.

[0073] In addition, the line width of the section of the first antenna radiator 110 at positions A2 and A3 can be adjusted to adjust the impedance matching and the resonance frequency point position of the second frequency band (1710 MHz). Additionally, the width of the first coupling gap C1 can be adjusted to adjust the impedance matching of the low frequency.

[0074] A part of the first antenna radiator 110 (at positions A1 and A2), the second antenna radiator 120 (at positions A2, A4 - A6), and the third ground radiator 170 (at positions G3, D1 - D7) resonate a third frequency band and a fourth frequency band through the fourth coupling gap C4. The third frequency band is 960 MHz, and the fourth frequency band is the second harmonic of the third frequency band, 1900 MHz. In one embodiment, the second antenna radiator 120 (at positions A5 - A6) and the third ground radiator 170 (at positions D2 and D3) can also resonate the third harmonic of the third frequency band through the fourth coupling gap C4.

[0075] The width of the fourth coupling gap C4 between the section of the second antenna radiator 120 at positions A5 and A6 and the section of the third ground radiator 170 at positions D2 and D3, and the line width of the section of the third ground radiator 170 at positions D2 and D3 can be adjusted to adjust the impedance matching and the resonance frequency point position of the third frequency band (960 MHz).

[0076] The third antenna radiator 150 (at positions F1, B5, B6) resonates a fifth frequency band and a sixth frequency band. The fifth frequency band is, for example, 2500 MHz to 2690 MHz, and the sixth frequency band is, for example, the second harmonic of the fifth frequency band, that is, the LAA high-frequency band (5500 - 5925 MHz). The line width of the third antenna radiator 150 (at positions F1, B5, B6) can be adjusted to adjust the impedance matching of the fifth and sixth frequency bands. Additionally, the width of the second coupling gap C2 can be adjusted to adjust the impedance matching of 2500 MHz to 2690 MHz.

[0077] In addition, the first antenna totem 100 further includes a fourth antenna radiator 160 (at positions B7, B8), extending from the second antenna radiator 120 at the part of position A4 and located between positions D3 and D4 of the third ground radiator 170. There is a fifth coupling gap C5 between the third ground radiator 170 and the fourth antenna radiator 160 at position D4. The width of the fifth coupling gap C5 can be adjusted to adjust the impedance matching of 1700 - 2700 MHz and the second harmonic of the LAA high-frequency band (5150 - 5500 MHz).

[0078] In addition, please refer to Figure 3 , the first feeding end (position F1), the first grounding end (position G1), the second grounding end (position G2), and the third grounding end (position G3) of the first antenna totem 100 (LTE antenna) are arranged on the lower surface 12 of the bracket 10.

[0079] In this embodiment, a plurality of elastic pieces (not shown) can be provided on the circuit board of the electronic device, directly abutting against the first feeding end (position F1), the first grounding end (position G1), the second grounding end (position G2), and the third grounding end (position G3). The first feeding end (position F1) can be electrically connected to the radio frequency signal terminal 20 through the elastic piece. The first grounding end (position G1) can be floatingly connected to a system ground plane 21 (such as the ground plane of the main board) through the elastic piece. A capacitor 22 (2.2 pF) is connected in series between the second grounding end (position G2) and the system ground plane 21. That is, the second grounding end (position G2) is connected to the lower part of the capacitor 22.

[0080] Similarly, another capacitor 22 (2.2 pF) is connected in series between the third grounding end (position G3) and the system ground plane 21 to improve the impedance matching of the low frequency. In addition, the third grounding end is connected to a specific absorption rate (SAR) sensor circuit 25 to form a Hybrid antenna. The specific absorption rate (SAR) sensor circuit 25 is used to detect the distance of an object and reduce the transmission power when the object is close to meet the SAR test specification.

[0081] In this embodiment, the size of the first antenna totem 100 is limited due to the relatively small configuration space. The specific absorption rate (SAR) sensor circuit 25 is designed on the main board (not shown), rather than being disposed on the first antenna totem 100. The first antenna totem 100 is connected to the main board through the third ground terminal (position G3) and a spring piece, and then connected to the specific absorption rate (SAR) sensor circuit 25. Such a design of disposing the specific absorption rate (SAR) sensor circuit 25 on the main board can allocate more space for the first antenna totem 100 to utilize.

[0082] Therefore, through the above design, the first antenna totem 100 (LTE antenna) can resonate signals in low, medium, and high frequencies, and the low, medium, and high frequencies can have good impedance matching.

[0083] In addition, the second antenna totem 200 (WiFi antenna) includes a fifth antenna radiator 210 (positions F2, A7, A8) and a fourth ground radiator 220 (positions G4, D8 - D10). The fifth antenna radiator 210 includes a second feeding end (position F2). The fourth ground radiator 220 is disposed beside the fifth antenna radiator 210 and surrounds the fifth antenna radiator 210. The fourth ground radiator 220 includes a fourth ground terminal (position G4). In this embodiment, the second antenna totem 200 can resonate in two frequency bands of 2400 MHz - 2500 MHz and 5150 MHz - 5875 MHz.

[0084] From Figure 2 it can be seen that the grounding paths of the fourth ground radiator 220 at positions D8 - D10 and the third ground radiator 170 at positions D1 - D7 are both towards Figure 2 the left side direction (in this embodiment, the left side is the inner side of the device). Such a design can improve the isolation degree between the first antenna totem 100 and the second antenna totem 200.

[0085] From Figure 4 it can be seen that there is a distance L1 between the first antenna totem 100 (LTE antenna) and the second antenna totem 200 (WiFi antenna), and the distance L1 is about between 10 millimeters and 30 millimeters, for example, 15 millimeters.

[0086] In addition, Figure 3 it can be seen from the left side that the second feeding end and the fourth ground terminal of the second antenna totem 200 are disposed on the lower surface 12 of the bracket 10. The second feeding end can be connected to the positive end of a coaxial transmission line (not shown) and then connected to the system signal terminal. The fourth ground terminal can be connected to the negative end of the coaxial transmission line and then connected to the ground plane.

[0087] Figure 7 is a partial side cross-sectional schematic diagram of an electronic device according to an embodiment of the present invention, where this cross-section corresponds toFigure 5 The cross-section of the line segment A-A. That is, Figure 7 the cross-section of the antenna module 60 and the bracket 10 shown in Figure 5 is the cross-section of the line segment A-A. Please refer to Figure 7 , in this embodiment, the electronic device 1 is, for example, a tablet computer, but is not limited thereto.

[0088] The electronic device 1 includes a housing 40, Figure 3 the bracket 10 and the antenna module 60 (labeled in Figure 3 ) and a screen metal part 50. The housing 40 includes a narrow border area 42. The bracket 10 is disposed within the housing 40 and located in the narrow border area 42. The antenna module 60 is disposed on the lower surface 12, the first side surface 14, the upper surface 16 and the second side surface 18 of the bracket 10. The screen metal part 50 is disposed within the housing 40 and beside the antenna module 60.

[0089] In this embodiment, the length of the available space of the first antenna totem 100 is about 79 millimeters, the width L2 is 7.92 millimeters, and the height L3 is 4.98 millimeters. The narrow border area 42 can provide limited space for the configuration of the antenna module 60. In this embodiment, the antenna module 60 is disposed on the bracket 10 and presents a three-dimensional form, thereby reducing the size in width.

[0090] In addition, since there needs to be a spacing L4 between the antenna module 60 ( Figure 7 the first antenna totem 100 is shown in

[0091] and the screen metal part 50, and the spacing L4 should be greater than or equal to 1 millimeter to reduce the influence of the screen metal part 50 on the antenna module 60. In this embodiment, a part of the first antenna totem 100 is stepped to increase the distance from the screen metal part 50 and reduce interference. In this embodiment, the lateral distance L5 between the part of the first antenna totem 100 at the same height as the screen metal part 50 (i.e., the top of the step) and the part at the bottom of the step is about 3.92 millimeters. Therefore, such a stepped design can strive for more distance between the first antenna totem 100 and the screen metal part 50. Figure 4 In addition, since the screen metal part 50 is located beside the bracket 10 on the first side surface 14, a stepped design is adopted for the part of the first antenna totem 100 (LTE antenna) disposed beside the first side surface 14. Specifically, please refer back to

[0092] Moreover, in this embodiment, the electronic device 1 further includes a metal back cover 30 (Figure 2 ), the third grounding radiator 170 close to the first antenna totem 100. A sixth coupling gap C6 is formed between the metal back cover 30 and the third grounding radiator 170. The sixth coupling gap C6 is between 0.5 mm and 1 mm.

[0093] Figure 8 is Figure 1 The relationship diagram of the frequency-VSWR of the antenna module. Please refer to Figure 8 , in this embodiment, at a frequency of 698 MHz to 960 MHz, the VSWR of the first antenna totem 100 can be less than or equal to 5. The VSWR of the first antenna totem 100 and the second antenna totem 200 can be less than 4 at frequencies of 1710 - 2700 MHz, 3300 MHz - 3800 MHz, and 5150 MHz - 5925 MHz, and thus have good performance.

[0094] Figure 9 is Figure 1 The relationship diagram of the frequency-isolation of the antenna module. Please refer to Figure 9 , in this embodiment, the isolation between the first antenna totem 100 and the second antenna totem 200 can be less than -15 dB, and thus have good performance.

[0095] Figure 10 is Figure 1 The relationship diagram of the frequency-antenna efficiency of the antenna module. Please refer to Figure 10 , for the first antenna totem 100 (LTE antenna), at a frequency of 698 MHz to 960 MHz, the antenna efficiency is -5.1 dBi to -7.3 dBi, at a frequency of 1710 MHz to 2700 MHz, the antenna efficiency is -4.2 dBi to -5.8 dBi, and at a frequency of 5150 MHz to 5925 MHz, the antenna efficiency is -3.6 dBi to -6.0 dBi, thus having the performance of an LTE broadband antenna efficiency.

[0096] For the second antenna totem 200 (WiFi antenna), at a frequency of 2400 MHz to 25 MHz, the antenna efficiency is -2.7 dBi to -3.1 dBi, and at a frequency of 5150 MHz to 5875 MHz, the antenna efficiency is -3.0 dBi to -4.3 dBi, and thus has good performance.

[0097] In summary, the second antenna radiator of the antenna module of the present invention extends from the first antenna radiator. The third antenna radiator extends from the first feeding end and away from the second antenna radiator. The first ground radiator is adjacent to the first antenna radiator and the second antenna radiator, and there is a first coupling gap between the first antenna radiator and the second antenna radiator. The second ground radiator is adjacent to the second antenna radiator, and there is a second coupling gap between the second ground radiator and the second antenna radiator. The third ground radiator is adjacent to the first antenna radiator and the second antenna radiator. There is a third coupling gap between the third ground radiator and the first antenna radiator. There is a fourth coupling gap between the third ground radiator and the second antenna radiator. Through the above design, the first antenna radiator and the third ground radiator resonate the first frequency band and the second frequency band through the third coupling gap. A part of the first antenna radiator, the second antenna radiator and the third ground radiator resonate the third frequency band and the fourth frequency band through the fourth coupling gap. The third antenna radiator resonates the fifth frequency band and the sixth frequency band. Therefore, the antenna module of the present invention can have the characteristic of multiple frequencies.

Claims

1. An antenna module, characterized in that, Comprising: A first antenna totem, comprising: A first antenna radiator, including a first feeding end; A second antenna radiator extending from the first antenna radiator; A third antenna radiator extending away from the second antenna radiator from the first feeding end; A first ground radiator adjacent to the first antenna radiator and the second antenna radiator, with a first coupling gap between the first antenna radiator and the second antenna radiator; A second ground radiator adjacent to the second antenna radiator, with a second coupling gap between the second antenna radiator and the second ground radiator; A third ground radiator adjacent to the first antenna radiator and the second antenna radiator, with a third coupling gap between the third ground radiator and the first antenna radiator, a fourth coupling gap between the third ground radiator and the second antenna radiator, the first antenna radiator and the third ground radiator resonating a first frequency band and a second frequency band through the third coupling gap, a part of the first antenna radiator, the second antenna radiator and the third ground radiator resonating a third frequency band and a fourth frequency band through the fourth coupling gap, and the third antenna radiator resonating a fifth frequency band and a sixth frequency band; A fourth antenna radiator extending from the second antenna radiator and located beside the third ground radiator, with a fifth coupling gap between the third ground radiator and the fourth antenna radiator.

2. The antenna module according to claim 1, wherein The first ground radiator includes a first ground end floatingly connected to a system ground plane.

3. The antenna module according to claim 1, wherein, The second ground radiator includes a second ground end, and a capacitor is connected in series between the second ground end and a system ground plane.

4. The antenna module according to claim 1, characterized in that, The third ground radiator includes a third ground end, a capacitor is connected in series between the third ground end and a system ground plane, and the third ground end is connected to a specific absorption rate sensor circuit.

5. The antenna module according to claim 1, characterized in that, The third ground radiator includes a relief hole located inside.

6. The antenna module according to claim 1, wherein Further comprising: A second antenna totem spaced from the first antenna totem by a distance between 10 mm and 30 mm, the second antenna totem comprising: A fifth antenna radiator, including a second feeding end; And A fourth ground radiator disposed beside the fifth antenna radiator and including a fourth ground end.

7. An electronic device, characterized in that, Comprising: A housing, including a narrow border area; A bracket disposed inside the housing and located in the narrow border area; And An antenna module as described in any one of claims 1 to 6, disposed on multiple surfaces of the bracket.

8. The electronic device according to claim 7, wherein Further comprising: A screen metal part disposed inside the housing and beside the antenna module, wherein a part of the first antenna totem facing the screen metal part is stepped.

9. The electronic device according to claim 7, wherein, Further comprising: A metal back cover close to the third ground radiator of the first antenna totem, with a sixth coupling gap formed between the metal back cover and the third ground radiator.

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