TWI868843B - Antenna module - Google Patents

Abstract

An antenna module includes a first radiator, a second radiator, a first ground plane and a second ground plane. The first radiator includes a first portion, a second portion and a third portion. The first portion is bent to form a first slot. The second portion and the first portion resonate at a first low frequency band together. The third portion and the first portion resonate at a first high frequency band together. The first slot is correlated to a central frequency of a second high frequency band. A first grounding end of the first portion is connected to the first ground plane. The second radiator includes a fourth portion and a fifth portion. The fourth portion is correlated to a central frequency of the first high frequency band. The fifth portion is correlated to a central frequency of the second high frequency band. A third slot is formed between the second radiator and the second ground plane and is correlated to a central frequency of a third high frequency band.

Description

Antenna Module

The present invention relates to an antenna module, and in particular to an antenna module with multiple frequency bands.

The antenna design that supports 5G Sub 6 band in general electronic devices takes up a lot of space, which not only limits the space utilization inside the device, but also has a high manufacturing cost. In addition, the operating frequency band range covered by the antenna is also relatively limited. Therefore, how to design a small, low-cost and multi-band 5G Sub 6 antenna architecture is an urgent problem to be solved in the current communications field.

The present invention provides an antenna module which is small in size, low in cost, supports multiple frequency bands and has good antenna performance.

An antenna module of the present invention includes a first radiator, a first ground plane, a second radiator and a second ground plane. The first radiator includes a first part, a second part and a third part. The first part is bent to form a first slot. The first part includes a first feed end and a first ground end located at two ends and close to each other. The second part extends to the first part and resonates with the first part in a first low-frequency band. The third part extends to the first part and resonates with the first part in a first high-frequency band. The first slot is related to the center frequency of a second high-frequency band. The first ground plane is located next to the first radiator, and the first ground end is connected to the first ground plane. The second radiator is arranged next to the second part and includes a fourth part, a fifth part and a second feed end located between the fourth part and the fifth part. A second slot is formed between the second radiator and the second portion. The second slot, the second radiator and the first portion of the first radiator resonate with the first low frequency band. The fourth portion is related to the center frequency of the first high frequency band. The fifth portion is related to the center frequency of the second high frequency band. The second ground plane is adjacent to the second feed end. A third slot is formed between the second feed end and the second ground plane. The third slot is related to the center frequency of a third high frequency band.

In an embodiment of the present invention, the antenna module further includes a passive element connected to the first feed end and the first ground plane to change the impedance matching of the first low frequency band.

In an embodiment of the present invention, the antenna module further includes a third radiator disposed beside the first portion and the third portion and including a second ground terminal. The second ground terminal is connected to the first ground plane. A first slot is formed between the third radiator and the third portion and between the third radiator and the first portion. The first slot and the third radiator are associated with a center frequency of a third high frequency band.

In an embodiment of the present invention, the antenna module further includes a fourth radiator and a fifth radiator. The fifth radiator extends from the first portion to the fifth portion. The fourth radiator is located between the first ground plane and the fifth radiator and includes a third feed end. A fourth slot is formed between the fourth radiator and the fifth radiator.

In an embodiment of the present invention, the fifth radiator is related to a center frequency of a first high-frequency band, and the fourth radiator is related to a center frequency of a third high-frequency band plus a fourth high-frequency band.

In one embodiment of the present invention, the fourth high frequency band is between 5925 MHz and 7125 MHz.

In one embodiment of the present invention, the fourth radiator is T-shaped, inverted trapezoidal or inverted triangle-shaped.

In one embodiment of the present invention, the first portion includes a first section, a second section, a third section and a fourth section. The first feed end is located at the first section. The first ground end is located at the fourth section. The first slot is L-shaped between the first section, the second section, the third section and the fourth section.

In one embodiment of the present invention, the first low frequency is between 617 MHz and 960 MHz, the first high frequency is between 1710 MHz and 2690 MHz, the second high frequency is between 3300 MHz and 5000 MHz, and the third high frequency is between 5150 MHz and 5925 MHz.

In an embodiment of the present invention, the antenna module is a planar antenna module.

In an embodiment of the present invention, the antenna module is a three-dimensional antenna module and is disposed on multiple surfaces of a plastic bracket.

Based on the above, the first radiator of the antenna module of the present invention includes a first part, a second part and a third part. The second part resonates with the first part at a first low frequency. The third part resonates with the first part at a first high frequency. The first slot is related to the center frequency of the second high frequency band. The second radiator of the antenna module includes a fourth part and a fifth part. The second radiator resonates with a local part of the first radiator at a first low frequency. The fourth part is related to the center frequency of the first high frequency band, and the fifth part is related to the center frequency of the second high frequency band. The third slot is formed between the second radiator and the second ground plane and is related to the center frequency of the third high frequency band. By combining the first radiator with the second radiator, not only can the size of the antenna be reduced, but low-frequency and multiple high-frequency bands can also be resonated to meet the needs of multiple antenna integration designs that share the limited space of the same antenna, generate multiple frequency bands, and have good performance in antenna performance.

FIG1 is a schematic top view of an antenna module according to an embodiment of the present invention. Referring to FIG1 , in this embodiment, the antenna module 100 can be configured in an electronic device such as a laptop or a tablet device, and includes three antenna types. The three antenna types are a 5G Sub 6 MIMO (multi-input multi-output) antenna, a 5G Sub 6 main antenna, and a WiFi 6E/7 antenna.

The 5G Sub 6 MIMO antenna can support 5G low-frequency band (617~960 MHz), medium-high frequency band (1710~2690 MHz), ultra-high frequency band (3300~5000 MHz), and LAA's B252 and B255 bands (5150~5925 MHz).

In addition to supporting the above-mentioned 5G mid- and high-frequency bands (1710~2690 MHz), ultra-high-frequency bands (3300~5000 MHz) and LAA's B252 and B255 bands (5150~5925 MHz), the 5G Sub 6 main antenna can also support 5G low-frequency bands (617~960 MHz).

The WiFi 6E/7 antenna can support the low-frequency band (2400~2500 MHz) and high-frequency band (5150~5925 MHz and 5925~7125 MHz) of WiFi 6E/7.

In the present embodiment, the antenna module 100 is, for example, a planar antenna module, which is arranged on a single planar circuit board (length of about 80 mm, width of about 12 mm, and height of about 0.4 mm), which can not only effectively save space but also reduce manufacturing costs. Of course, the antenna module 100 can also be a three-dimensional antenna module, for example, arranged on a plastic bracket, and the present invention is not limited to this. More importantly, the antenna module 100 is a composite multi-antenna architecture that integrates the MIMO antenna of 5G Sub 6, the main antenna of 5G Sub 6 and the WiFi 6E/7 antenna, and can support the above-mentioned multiple high-frequency bands and even low-frequency bands, thereby providing a multi-band and broadband communication range. The design of the antenna module 100 will be further explained below.

As shown in FIG1 , the antenna module 100 includes a first radiator 110, a second radiator 120, a third radiator 130, a first ground plane GR1, and a second ground plane GR2. The first radiator 110 includes a first portion 111, a second portion 112, and a third portion 113. The first portion 111 includes a first section 114 (position B9 to position B8), a second section 115 (position B8 to position B5), a third section 116 (position B5, position B3 to position B2), and a fourth section 117 (position B2 to position B1) connected in sequence.

The first portion 111 is bent to form a first slot C1. Specifically, a portion of the first slot C1 is located between the first section 114, the second section 115, the third section 116 and the fourth section 117 and is L-shaped.

The first portion 111 further includes a first feed terminal F1 and a first ground terminal G1 located at both ends and close to each other. The first feed terminal F1 is located at the first section 114 and electrically connected to a positive signal terminal of a first transmission line 161, while the first ground terminal G1 is located at the fourth section 117 and electrically connected to a negative signal terminal of the first transmission line 161.

The second portion 112 (position B3 to position B4) extends from the first portion 111. The third portion 113 extends from the first portion 111 and includes a fifth segment 118 (position B8 to position B6) and a sixth segment 119 (position B6 to position B7) connected in sequence. The second portion 112 is L-shaped, and the fifth segment 118 is connected to the first segment 114 of the first portion 111.

The third radiator 130 is disposed beside the first portion 111 and the third portion 113 and includes a second ground terminal G2 connected to the first ground plane GR1. The third radiator 130 is L-shaped and includes a seventh section 131 (position D1 to position D2) and an eighth section 132 (position D2 to position D3) connected in sequence. The first slot C1 is formed between the third radiator 130 and the third portion 113 and between the third radiator 130 and the first portion 111.

In this embodiment, the signal of the MIMO antenna of 5G Sub 6 is fed from the first feed end F1 to the first part 111 of the first radiator 110, and the first ground end G1 of the first part 111 is connected to the first ground plane GR1 located next to the first radiator 110. The first ground plane GR1 is, for example, a ground plane made of copper foil material, and is connected to a system ground plane GS (not shown).

The antenna module 100 can generate 5G low-frequency band (617~960 MHz), medium-frequency band, and high-frequency band (1710~2690, 3300~5000, 5150~5925 MHz) through the 5G Sub 6 MIMO antenna.

Specifically, the first portion 111 and the second portion 112 of the first radiator 110 form a PIFA (Planar Inverted-F Antenna) antenna structure, and resonate a first low frequency band (i.e., the low frequency band of 5G Sub 6, 617~960 MHz). The first portion 111 and the third portion 113 of the first radiator 110 form another PIFA antenna structure, and resonate a first high frequency band (i.e., the high frequency band of 5G Sub 6, 1710~2690 MHz).

At the same time, the first slot C1 of the first radiator 110 of the present embodiment is related to a second high frequency band (5G Sub 6 ultra-high frequency band, 3300~5000 MHz) and a third high frequency band (LAA B252 and B255 bands, 5150~5925 MHz). In detail, in the path of the first part 111, by changing the spacing of the first slot C1, the impedance matching and center frequency position of the 3300~4100 MHz band in the second high frequency band can be adjusted. In addition, by changing the distance of the first slot C1 between the third radiator 130 and the first portion 111, or changing the path length of the third radiator 130 itself, the impedance matching and center frequency position of another part of the second high frequency band and the third high frequency band (both covering the range of 4100-5925 MHz) can be adjusted.

In this embodiment, the second radiator 120 is disposed beside the second portion 112 of the first radiator 110, and includes a fourth portion 121, a fifth portion 122, and a second feeding end F2 located between the fourth portion 121 and the fifth portion 122. The fourth portion 121 includes a ninth section 123 (position A1 to position A2), a tenth section 124 (position A2 to position A3), and an eleventh section 125 (position A3 to position A4) connected in sequence.

The fifth portion 122 includes a twelfth section 126 (position A1 to position A5) and a thirteenth section 127 (position A5 to position A6) connected in sequence. The second feed end F2 is electrically connected to the signal positive end of a second transmission line 162. The second ground plane GR2 is adjacent to the second feed end F2, and a third ground end G3 of the second ground plane GR2 is electrically connected to the signal negative end of the second transmission line 162. The second ground plane GR2 is, for example, a ground plane made of copper foil material and is connected to the system ground plane GS.

The signal of the main antenna of 5G Sub 6 is fed from the second feed end F2 to the fourth portion 121 and the fifth portion 122 of the second radiator 120, and the second radiator 120 is coupled with the first radiator 110 connected to the first ground plane GR1. Thus, the main antenna of 5G Sub 6 forms an open loop antenna structure.

Specifically, a second slot C2 is formed between the second radiator 120 and the second portion 112 of the first radiator 110. The second radiator 120 (the fourth portion 121 and the fifth portion 122) couples with a portion of the first portion 111 of the first radiator 110 (the fourth segment 117, the third segment 116) plus the second portion 112, and a portion of the first portion 111 of the first radiator 110 (the fourth segment 117, the third segment 116, the second segment 115) plus the third portion 113 through the second slot C2 to resonate the first low frequency band (the low frequency band of 5G Sub 6, 617~960 MHz) to meet the antenna module 100's requirement for low frequency bandwidth.

At the same time, by changing the path length and width of the fourth portion 121, the impedance matching and center frequency position of the first high frequency band (5G Sub 6 high frequency band, 1710~2690 MHz) of the main antenna of 5G Sub 6 can be adjusted. By changing the path length and width of the fifth portion 122, the impedance matching and center frequency position of the second high frequency band (5G Sub 6 ultra-high frequency band, 3300~5000 MHz) of the main antenna of 5G Sub 6 can be adjusted. In addition, a third slot C3 is formed between the second feed end F2 and the second ground plane GR2. By changing the third slot C3, the impedance matching and center frequency position of the third high-frequency band (covering the B252 and B255 bands of LAA, 5150~5925 MHz) can be adjusted.

In addition, the MIMO antenna of 5G Sub 6 and the main antenna of 5G Sub 6 share the radiation path of the first low frequency band (617~960 MHz) (i.e., the second section 115, the third section 116, the fourth section 117 and the second section 112 of the first section 111 of the first radiator 110), which would originally deteriorate the isolation between the two antennas. However, the first feed end F1 of the present embodiment is designed to be connected to the first ground plane GR1 through a passive element P, which has a low-frequency filtering effect, so that the impedance matching of the first low frequency band (617~960 MHz) generated by the first radiator 110 is deteriorated, so that it does not affect the low-frequency characteristics of the second feed end, thereby improving the low-frequency isolation between the two antennas and enhancing the 5G Sub Therefore, the main antenna of 5G Sub 6 can achieve broadband characteristics in the first low-frequency band without adding a frequency modulation switching circuit.

The passive element P is, for example, an inductor element with an inductance value of 6.8 nH, but the type of the passive element P is not limited thereto.

In this embodiment, the antenna module 100 further includes a fourth radiator 140 and a fifth radiator 150. The fifth radiator 150 (position B10 to position B11) is connected to the fourth section 117 of the first portion 111 and extends from the first portion 111 to the fifth portion 122. The fourth radiator 140 is located between the first ground plane GR1 and the fifth radiator 150, and includes a third feed terminal F3. A fourth slot C4 is formed between the fourth radiator 140 and the fifth radiator 150. The third feed terminal F3 is electrically connected to a signal positive terminal of a third transmission line 163, and a fourth ground terminal G4 of the first ground plane GR1 is electrically connected to a signal negative terminal of the first transmission line 161.

The signal of the WiFi 6E/7 antenna is coupled and fed (Coupling Feed) from the third feed end F3 to the T-path of the fourth radiator 140. The fourth radiator 140 is coupled with the fifth radiator 150 and the local fourth section 117 of the first radiator 110, and connected to the first ground end G1 and the fourth ground end G4 to connect to the system ground plane GS. In this way, the WiFi 6E/7 antenna forms an open loop antenna architecture, which can support the low frequency band (2400~2500 MHz) and high frequency band (5150~5925 MHz and 5925~7125 MHz) of WiFi 6E/7.

Specifically, by changing the length and width of the path formed by the fifth radiator 150 and a portion of the fourth section 117 of the first radiator 110, the impedance matching and center frequency position of part of the first high frequency band (2400-2500 MHz) of the WiFi 6E/7 antenna can be adjusted. In addition, by changing the T-shaped path of the fourth radiator 140, the impedance matching and center frequency position of the third high frequency band (covering the B252 and B255 bands of LAA, 5150-5925 MHz) and a fourth high frequency band (5925-7125 MHz) of the WiFi 6E/7 antenna can be adjusted.

The fourth radiator 140 is, for example, T-shaped, inverted trapezoidal, or inverted triangular. It only needs to form a T-shaped or T-like radiation path in the fourth radiator 140 .

It is worth noting that the conventional designs of WWAN (Wireless Wide Area Network) antennas and WiFi antennas of electronic devices occupy a large space (e.g., a plane space of 100 mm in length and 12 mm in width). In contrast, the antenna module 100 of the present embodiment is arranged on a single planar circuit board (about 80 mm in length and about 12 mm in width), and the MIMO antenna of 5G Sub 6, the main antenna of 5G Sub 6, and the WiFi 6E/7 antenna are integrated to achieve a shared radiation path and reduce the space required for the antenna. The antenna layout of the present design is also streamlined, which is conducive to miniaturization, and the manufacturing cost of the antenna module 100 can be further reduced and mass production is easy.

FIG. 2A is a schematic top view of the antenna module of FIG. 1. FIG. 2B is a schematic side view of the antenna module of FIG. 1 connected to a system ground plane. FIG. 2C is a schematic top view of a three-dimensionally unfolded antenna module according to another embodiment of the present invention. FIG. 2D is a schematic side view of the antenna module of FIG. 2C connected to a system ground plane. It should be noted that FIG. 2A and FIG. 2C hide the first transmission line, the second transmission line, and the third transmission line.

Please refer to Figures 2A to 2D. The antenna module 100 of Figure 2A is a planar antenna module 100. It is connected to the system ground plane GS through the first ground plane GR1 and the second ground plane GR2 (as shown in Figure 2B, due to the viewing angle, only the first ground plane GR1 is shown to be connected to the system ground plane GS). As shown in Figures 2C and 2D, in another embodiment, the antenna module 100A is a three-dimensional antenna module 100, and is set on multiple surfaces of a plastic bracket 200 (Figure 2D).

Specifically, the antenna module 100A includes a first bending portion 101, a second bending portion 102 and a third bending portion 103 connected in sequence, and the plastic bracket 200 includes a first surface S1, a second surface S2 and a third surface S3. The first surface S1 is, for example, perpendicular to the second surface S2, and the second surface S2 is, for example, perpendicular to the third surface S3.

The first bend portion 101 has a width Q2 of about 8 mm and is disposed on the first surface S1 of the plastic bracket 200, and is connected to the system ground plane GS through the first ground plane GR1 and the second ground plane GR2 (FIG. 2D; due to the viewing angle, only the first ground plane GR1 is shown to be connected to the system ground plane GS). The second bend portion 102 has a width Q3 of about 5 mm and is disposed on the first surface S1 of the plastic bracket 200, and is located between the first bend portion 101 and the third bend portion 103. The third bend portion 103 has a width Q4 of about 3 mm and is disposed on the third surface S3 of the plastic bracket 200.

The antenna totem of the antenna module 100A is similar to the antenna totem of the antenna module 100 in FIG. 2A , and the main difference between the two is that the total width of the antenna module 100A is about 16 mm, which is greater than the width Q1 (about 12 mm) of the antenna module 100. Specifically, the first bending portion 101 of the antenna module 100A is the same as the left half of the antenna module 100 in FIG. 2A . The second bending portion 102 and the third bending portion 103 of the antenna module 100A are equivalent to the result of extending the right half of the antenna module 100 in FIG. 2A along the Y-axis direction, so that the second bending portion 102 and the third bending portion 103 are respectively disposed on the second surface S2 and the third surface S3 of the plastic bracket 200.

Since the width of the antenna module 100A on the Y axis is shortened to about 8 mm after being bent, the antenna module 100A can be placed in a device with a narrow frame with the plastic bracket 200, achieving good three-dimensional space utilization. In addition, the antenna module 100A can also be manufactured by LDS (Laser Direct Structuring) or FPC (Flexible Printed Circuit) process, which is easy to mass produce.

FIG3 is a frequency-voltage standing wave ratio (VSWR) relationship diagram of the antenna module of FIG2C. Referring to FIG3, for the antenna module 100A (FIG2C), the voltage standing wave ratio (VSWR) of the 5G Sub 6 main antenna in the 5G Sub-6 low frequency band (698~960 MHz) is all below 6. In addition, the voltage standing wave ratio of the 5G Sub 6 MIMO antenna, the 5G Sub 6 main antenna, and the WiFi 6E/7 antenna in the 5G Sub-6 high frequency band (1710~5925 MHz) and the WiFi 6E/7 frequency band (5150~7125MHz) is all below 4. In other words, the antenna module 100A has a good broadband effect.

FIG4 is a frequency-isolation relationship diagram of the antenna module of FIG2C. Referring to FIG4, for the antenna module 100A (FIG2C), whether it is the 5G Sub 6 MIMO antenna for the 5G Sub 6 main antenna, the 5G Sub 6 main antenna for the WiFi 6E/7 antenna, or the 5G Sub 6 MIMO antenna for the WiFi 6E/7 antenna, the isolation is generally below -10 dB. In other words, the antenna module 100 has good isolation performance.

FIG5 is a frequency-antenna efficiency relationship diagram of the antenna module of FIG2C. Referring to FIG5, for the antenna module 100A (FIG2C), the antenna efficiency of the 5G Sub 6 MIMO antenna in the first high frequency band (1710~2690 MHz) is -2.7~-4.7 dBi, and the antenna efficiency in the second and third high frequency bands (3300~5925 MHz) is -2.2~-5.7 dBi.

On the other hand, the main antenna of 5G Sub 6 has an antenna efficiency of -13.4 dBi at the low frequency of 617 MHz, -6.8 dBi at the low frequency of 698 MHz, -5.2 dBi at the low frequency of 960 MHz, -2.0~-4.1 dBi in the first high frequency band (1710~2690 MHz), and -3.0~-5.6 dBi in the second high frequency band and the third high frequency band (3300~5925 MHz).

In addition, the antenna efficiency of the WiFi 6E/7 antenna is -5.8~-6.5 dBi in the WiFi 6E/7 frequency band (2400~2500 MHz), and the antenna efficiency in the third and fourth high frequency bands (5150~7125 MHz) is -2.5~-4.3 dBi. Therefore, the antenna module 100A has good antenna efficiency performance.

In summary, the antenna module of the present invention includes a first radiator, a second radiator, a third radiator, a fourth radiator and a fifth radiator. The first radiator includes a first part, a second part and a third part. The second radiator includes a fourth part and a fifth part. The second part and the first part, or the second radiator and a part of the first radiator, resonate in a first low frequency band. The fourth part, the fifth radiator, or the third part and the first part, resonate in a first high frequency band.

The antenna module integrates the first radiator, the second radiator and the fourth radiator to form a streamlined antenna layout, which not only reduces the size of the antenna and reduces the manufacturing cost, but also effectively resonates low-frequency and multiple high-frequency bands to meet the needs of multiple bands, while also having good performance in antenna performance. In addition, the first feed end of the first radiator is designed to be connected to the first ground plane through a passive element, which can improve the isolation between the first radiator and the second radiator, enhance the efficiency of the low-frequency antenna, and achieve a broadband effect at low frequency.

A1~A6, B1~B11, D1~D3: Position C1: First slot C2: Second slot C3: Third slot C4: Fourth slot F1: First feed port F2: Second feed port F3: Third feed port G1: First ground port G2: Second ground port G3: Third ground port G4: Fourth ground port GR1: First ground plane GR2: Second ground plane GS: System ground plane P: Passive element Q1, Q2, Q3, Q4: Width S1: First surface S2: Second surface S3: Third surface 100, 100A: Antenna module 101: First bend 102: Second bend 103: Third bend 110: First radiator 111: First part 112: Second part 113: Third part 114: First paragraph 115: Second paragraph 116: Third paragraph 117: Fourth paragraph 118: Fifth paragraph 119: Sixth paragraph 120: Second radiator 121: Fourth part 122: Fifth part 123: Ninth paragraph 124: Tenth paragraph 125: Eleventh paragraph 126: Twelfth paragraph 127: Thirteenth paragraph 130: Third radiator 131: Seventh paragraph 132: Eighth paragraph 140: Fourth radiator 150: Fifth radiator 161: First transmission line 162: Second transmission line 163: Third transmission line 200: Plastic bracket

FIG. 1 is a schematic top view of an antenna module according to an embodiment of the present invention. FIG. 2A is a schematic top view of the antenna module of FIG. 1. FIG. 2B is a schematic side view of the antenna module of FIG. 1 connected to a system ground plane. FIG. 2C is a schematic top view of an antenna module unfolded in a three-dimensional plane according to another embodiment of the present invention. FIG. 2D is a schematic side view of the antenna module of FIG. 2C connected to a system ground plane. FIG. 3 is a frequency-voltage stationary wave ratio (VSWR) relationship diagram of the antenna module of FIG. 2C. FIG. 4 is a frequency-isolation relationship diagram of the antenna module of FIG. 2C. FIG. 5 is a frequency-antenna efficiency relationship diagram of the antenna module of FIG. 2C.

A1~A6, B1~B11, D1~D3: Location

C1: First groove seam

C2: Second groove seam

C3: The third groove

C4: Fourth groove seam

F1: First feed end

F2: Second feed end

F3: The third feed terminal

G1: First ground terminal

G2: Second ground terminal

G3: The third ground terminal

G4: The fourth ground terminal

GR1: First ground contact surface

GR2: Second ground plane

P: Passive element

100: Antenna module

110: The First Radiant

111: Part 1

112: Part 2

113: Part 3

114: First paragraph

115: Second paragraph

116: The third paragraph

117: The fourth paragraph

118: The fifth paragraph

119: Paragraph 6

120: Second Radiant

121: Part 4

122: Part 5

123: Ninth paragraph

124: Paragraph 10

125: Paragraph 11

126: Paragraph 12

127: Paragraph 13

130: The Third Radiation Body

131: Paragraph 7

132: The eighth paragraph

140: The fourth radiation body

150: The Fifth Radiation

161: First transmission line

162: Second transmission line

163: The third transmission line

Claims (11)

An antenna module comprises: A first radiator, comprising a first part, a second part and a third part, the first part is bent to form a first slot, the first part comprises a first feed end and a first ground end located at two ends and close to each other, the second part extends from the first part and resonates with the first part in a first low frequency band, the third part extends from the first part and resonates with the first part in a first high frequency band, the first slot is related to the center frequency of a second high frequency band; A first ground plane, located beside the first radiator, and the first ground end is connected to the first ground plane; A second radiator is disposed beside the second part and includes a fourth part, a fifth part and a second feeding end between the fourth part and the fifth part. A second slot is formed between the second radiator and the second part. The second slot, the second radiator and the first part of the first radiator, the second part and the third part resonate with the first low-frequency band. The fourth part is related to the center frequency of the first high-frequency band, and the fifth part is related to the center frequency of the second high-frequency band. A second ground plane is adjacent to the second feeding end. A third slot is formed between the second feeding end and the second ground plane. The third slot is related to the center frequency of a third high-frequency band. The antenna module as described in claim 1 further includes a passive element connecting the first feed end and the first ground plane to change the impedance matching of the first low-frequency band. The antenna module as described in claim 1 further includes a third radiator, which is arranged next to the first part and the third part, and includes a second ground terminal, which is connected to the first ground plane. The first slot is formed between the third radiator and the third part and between the third radiator and the first part. The first slot and the third radiator are related to the center frequency of the third high-frequency band. The antenna module as described in claim 1 further includes a fourth radiator and a fifth radiator, wherein the fifth radiator extends from the first part to the fifth part, the fourth radiator is located between the first ground plane and the fifth radiator, and includes a third feed end, and a fourth slot is formed between the fourth radiator and the fifth radiator. The antenna module as described in claim 3, wherein the fifth radiator is related to the center frequency of the first high-frequency band, and the fourth radiator is related to the center frequency of the third high-frequency band plus a fourth high-frequency band. An antenna module as described in claim 4, wherein the fourth high frequency band is between 5925 MHz and 7125 MHz. The antenna module as described in claim 3, wherein the fourth radiator is T-shaped, inverted trapezoidal or inverted triangle-shaped. An antenna module as described in claim 1, wherein the first part includes a first section, a second section, a third section and a fourth section, the first feed end is located at the first section, the first ground end is located at the fourth section, and the first slot is L-shaped between the first section, the second section, the third section and the fourth section. An antenna module as described in claim 1, wherein the first low frequency is between 617 MHz and 960 MHz, the first high frequency is between 1710 MHz and 2690 MHz, the second high frequency is between 3300 MHz and 5000 MHz, and the third high frequency is between 5150 MHz and 5925 MHz. The antenna module as described in claim 1, wherein the antenna module is a planar antenna module. The antenna module as described in claim 1 is a three-dimensional antenna module and is disposed on multiple surfaces of a plastic bracket.

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