TW202114296A - Antenna module - Google Patents

Abstract

The present disclosure provides an antenna module including a first antenna element, a first switching element, a second switching element, a second feeding portion, a second antenna element, and a third antenna element. In response to the first switching element being switched to the conducting state and the second switching element being switched to the open state, the first antenna element is coupled to the second antenna element to cooperatively provide a first resonant mode. In response to the first switching element being switched to the open state and the second switching element being switched to the conducting state, the first antenna element independently provides a second resonant mode and the second antenna element is coupled to the third antenna element to cooperatively provide a third resonant mode.

Description

Antenna module

The present invention relates to an antenna module, and more particularly to an antenna module that switches modes through a switch element.

In response to the advent of LTE Advance Pro (Pre5G) and the real 5G era, antenna engineers need to design different antenna units for different communication protocols. In addition to increasing the number of antennas, the area occupied by the antennas has also increased accordingly. However, as the current design trends of electronic products tend to be miniaturized and thinner, there is a serious shortage of space available for placing antennas.

10 mm、20 mm

10 mm及40 mm

10 mm的空間，則其在通訊裝置上將總共佔用多達80 mm

10 mm的空間。For example, if you want a communication device to operate in a wireless wide area network (WWAN) and wireless local area network (WLAN), the designer generally needs to set the corresponding device on the communication device. Antenna element. The above-mentioned antenna elements include, for example, a main antenna (main) line and an auxiliary (auxiliary) antenna in the WLAN protocol, and a multiple input multiple output (MIMO) antenna in the WWAN protocol. However, if each of the above-mentioned antenna elements is to be independently designed and configured in a communication device, the required space will be the sum of these antenna elements. For example, suppose the above antennas individually occupy 20 mm

10 mm, 20 mm

10 mm and 40 mm

10 mm of space, it will occupy up to 80 mm in total on the communication device

10 mm of space.

Therefore, for those skilled in the art, how to design an antenna that can be used in different communication protocols has become a subject worthy of in-depth study.

In view of this, the present invention provides an antenna module that can be used to solve the above technical problems.

The present invention provides an antenna module, which includes a first antenna element, a first switch element, a second switch element, a second feed-in part, a second antenna element, and a third antenna element. The first antenna element has a first feeding portion, and the first feeding portion is used for receiving a first signal. The second antenna element is electrically connected to the first antenna element through the first switching element, and is electrically connected to the second feeding portion through the second switching element, and the second feeding portion is used for receiving a second signal. In response to the first switching element being switched to an on state and the second switching element to an off state, the first antenna element is coupled to the second antenna element to cooperatively provide a first resonance mode according to the first signal state. In response to the first switching element being switched to the off state and the second switching element to the conducting state, the first antenna element independently provides a second resonance mode according to the first signal, and the second antenna element is coupled to The third antenna element cooperatively provides a third resonance mode according to the second signal.

Based on the above, when the first switching element and the second switching element are in the on state and the off state, respectively, the antenna module of the present invention can provide the first resonance mode. When the first switch element and the second switch element are in the off state and the on state, respectively, the antenna module of the present invention can provide the second resonance mode and the third resonance mode at the same time. In this way, the antenna module can provide multiple resonance modes without occupying too much space, so that the antenna module is more suitable for being installed in a lighter, thinner, short, and small electronic device.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail in conjunction with the accompanying drawings.

Please refer to FIG. 1, which is a structural diagram of an antenna module according to an embodiment of the present invention. In this embodiment, the antenna module 100 includes a first antenna element 110, a first switching element 141, a second switching element 142, a second feeding portion 125, a second antenna element 120, and a third antenna element 130. The antenna module 100 of this embodiment can be installed in a communication device such as a smart phone, and can be switched from the first antenna to the on state or off state as the first switch element 141 and the second switch element 142 are switched to the on state or the off state. The element 110, the second antenna element 120, and/or the third antenna element 130 provide different resonance modes. The relevant details will be detailed later.

In FIG. 1, the first antenna element 110 has a first feeding portion 115, and the first feeding portion 115 can be used to receive the first signal. The aforementioned first signal is, for example, a radio frequency signal that can be used to excite the first antenna element 110, but it is not limited to this.

The second antenna element 120 is electrically connected to the first antenna element 110 through the first switch element 141. In detail, the first antenna element 110 can have a first end 110a, the second antenna element 120 can have a first end 120a, and the first switch element 141 can be connected to the first end of the first antenna element 110. Between the end point 110a and the first end point 120a of the second antenna element 120. In addition, as shown in FIG. 1, the first end 110a of the first antenna element 110 and the first end 120a of the second antenna element 120 may be separated by a first distance D1, and the first distance D1 may be between Between 3 mm and 5 mm.

In addition, the second antenna element 120 can be electrically connected to the second feeding portion 125 through the second switch element 142. More specifically, the second antenna element 120 may include a second terminal 120 b, and the second switch element 142 may be connected between the second terminal 120 b of the second antenna element 120 and the second feeding portion 125. The second feeding part 125 can be used to receive a second signal. The aforementioned second signal is, for example, a radio frequency signal that can be used to excite the second antenna element 120, but it is not limited to this.

The third antenna element 130 may have a first end 130a and a second end 130b, wherein the first end 130a of the third antenna element 130 and the second antenna element 120 may be separated by a second distance D2, and a second distance D2 Can be between 0.5 mm and 2 mm. In addition, the antenna module 100 may further include a grounding portion 150, and the second end 130b of the third antenna element 130 may be electrically connected to the grounding portion 150.

In different embodiments, the first switching element 141 and the second switching element 142 can be implemented as various types of switching circuits that can be switched to the on state or the off state according to related control signals. Taking FIG. 1 as an example, the first switching element 141 can be implemented as a switching circuit having a first terminal, a second terminal, and a third terminal. The first terminal of the first switching element 141 can be connected to the first antenna element 110. One end 110a, the second end of the first switch element 141 can be connected to the first end 120a of the second antenna element 120, and the third end of the first switch element 141 can be an open end.

In an embodiment, when the first switching element 141 is controlled to switch to the on state, the first switching element 141 can connect its first end to the second end accordingly, so that the first antenna element 110 is One end 110 a is electrically connected to the first end 120 a of the second antenna element 120. On the other hand, when the first switching element 141 is controlled to switch to the off state, the first switching element 141 can connect its first end to the third end accordingly, so that the first antenna element 110 is The terminal 110a is in an open state, but the present invention may not be limited to this.

Similar to the first switching element 141, the second switching element 142 can also be implemented as a switching circuit having a first end, a second end, and a third end, wherein the first end of the second switching element 142 can be connected to the second antenna element The second terminal 120b of the 120, the second terminal of the second switching element 142 may be an open-circuit terminal, and the third terminal of the second switching element 142 may be connected to the second feeding part 125.

In an embodiment, when the second switch element 142 is controlled to switch to the on state, the second switch element 142 can connect its first end to the third end accordingly, so that the second antenna element 120 One terminal 120b is electrically connected to the second feeding portion 125. On the other hand, when the second switch element 142 is controlled to switch to the off state, the second switch element 142 can connect its first end to the second end accordingly, so that the second antenna element 120 The terminal 120b is in an open state, but the present invention may not be limited to this.

As mentioned earlier, the antenna module 100 of the present invention can provide different resonance modes in response to the first switching element 141 and the second switching element 142 being switched to the on state/off state. The following will be used with the corresponding Schematic for further explanation.

Please refer to FIG. 2, which is a schematic diagram of an antenna module capable of providing a first antenna mode shown in FIG. 1. As shown in FIG. 2, in this embodiment, when the first switching element 141 is switched to the on state and the second switching element 142 is switched to the off state, the first antenna element 110 can pass through the first switching element 141 It is coupled to the second antenna element 120 to cooperatively provide a first resonance mode according to the first signal (which is fed by the first feeding portion 115). To facilitate identification, the first antenna element 141 and the second antenna element 142 that provide the first resonance mode through coupling are shown as diagonal lines, but the present invention is not limited to this.

In FIG. 2, the above-mentioned first resonance mode may correspond to the first resonance path, and the first resonance path may sequentially pass through the first feeding portion 115, the first antenna element 110, the first switching element 141, and the second resonance path. Antenna element 120.

In this embodiment, the first antenna element 110 and the second antenna element 120 that cooperate in the first resonance mode can form a WWAN protocol MIMO antenna, but it is not limited to this. In different embodiments, the above-mentioned first resonance mode may have multiple first frequency bands. For example, if the first antenna element 110 and the second antenna element 120 can form a WWAN protocol MIMO antenna, the above-mentioned first frequency band may include 1805 MHz to 2690 MHz, 3.5 GHz, and 5 GHz, but may not be limited thereto. In other embodiments, the first resonance mode provided by the first antenna element 110 and the second antenna element 120 can be adjusted by the designer according to the needs of the pattern of the first antenna element 110 and the second antenna element 120 It is not limited to the above-mentioned embodiment.

Please refer to FIGS. 3A and 3B again, in which FIG. 3A is a schematic diagram of an antenna module capable of providing a second resonance mode according to FIG. 1, and FIG. 3B is a schematic diagram of an antenna module capable of providing a third resonance mode according to FIG. 3A Schematic diagram of the antenna module. It should be understood that the second resonance mode shown in FIG. 3A and the third resonance mode shown in FIG. 3B exist at the same time, but they are shown separately for easy identification.

As shown in FIG. 3A, when the first switch element 141 is switched to the off state and the second switch element 142 is switched to the on state, the first antenna element 110 can be based on the first signal (which is generated by the first feeder 115 The fed) independently provides the second resonance mode. To facilitate identification, the first antenna element 110 independently providing the second resonance mode is shown as a diagonal line in FIG. 3A, but the present invention is not limited to this.

In FIG. 3A, the above-mentioned second resonance mode may correspond to the second resonance path, and this second resonance path is only located at the first antenna element 110.

In this embodiment, the above-mentioned first antenna element 110 operating in the second resonance mode may form the main antenna of the WLAN protocol, but it is not limited to this. In different embodiments, the above-mentioned second resonance mode may have multiple second frequency bands.

For example, if the first antenna element 110 can form the main antenna of the WLAN protocol, the above-mentioned second frequency band may include 2.4 GHz and 5 GHz, but it may not be limited thereto. More specifically, the first antenna element 110 can be regarded as including a first pattern 111 and a second pattern 112 connected, wherein the first pattern 111 can be used to provide a frequency band of 2.4 GHz, and the second pattern 112 can be used to provide a 5 GHz frequency band. Frequency band, but not limited to this

In other embodiments, the second resonance mode provided by the first antenna element 110 can be implemented by the designer by adjusting the pattern of the second antenna element 110 according to requirements, and is not limited to the above-mentioned embodiments.

At the same time, as shown in FIG. 3B, when the first switching element 141 is switched to the off state and the second switching element 142 is switched to the on state, the second antenna element 120 can be coupled to the third antenna element 130 to cooperate with each other. The third resonance mode is provided according to the second signal (which can be fed by the second feeding part 125). To facilitate identification, the second antenna element 120 and the third antenna element 130 that cooperate to provide the third resonance mode are shown as diagonal lines in FIG. 3B, but the present invention is not limited to this.

In FIG. 3B, the above-mentioned third resonance mode may correspond to a third resonance path, and this third resonance path sequentially passes through the second feeding portion 125, the second switching element 142, the second antenna element 120, and the third antenna Component 130.

In this embodiment, the above-mentioned second antenna element 120 and third antenna element 130 cooperating in the third resonance mode can form an auxiliary antenna of the WLAN protocol, but it is not limited to this. In different embodiments, the aforementioned third resonance mode may have multiple third frequency bands. For example, if the second antenna element 120 and the third antenna element 130 can cooperate to form an auxiliary antenna of the WLAN protocol, the aforementioned third frequency band may include 2.4 GHz and 5 GHz, but may not be limited thereto. More specifically, the second antenna element 120 can be used to provide a frequency band of 5 GHz, and the third antenna element 130 can be used to provide a frequency band of 2.4 GHz, but it is not limited to this. In other embodiments, the third resonance mode provided by the second antenna element 120 and the third antenna element 130 can be implemented by the designer by adjusting the patterns of the second antenna element 120 and the third antenna element 130 according to requirements. It is not limited to the above-mentioned embodiment.

It can be seen from the above that by connecting the first, second, and third antenna elements with the first and second switching elements, the antenna module of the present invention can switch the first and second switching elements to the on or off state. The open state enables the antenna module to provide only the first resonance mode (for example, corresponding to the MIMO antenna in the WWAN protocol), or to provide the second and third resonance modes at the same time (for example, corresponding to the main antenna and the main antenna in the WLAN protocol, respectively). Auxiliary antenna). Thereby, the space occupied by the antenna module can be effectively reduced, so that the antenna module is more suitable for being installed in a lighter, thinner, short, and small electronic device.

10 mm即可容納天線模組100，但可不限於此。換言之，相較於習知將各天線元件獨立設置的方式，本發明的天線模組100所佔用的空間明顯較少。In FIG. 1, the antenna module 100 of the present invention may further include a printed circuit board 160, and the first antenna element 110, the first switching element 141, the second switching element 142, the second feeding portion 125, and the second antenna The element 120 and the third antenna element 130 can both be disposed on the printed circuit board 160. In one embodiment, the size of the printed circuit board 160 only needs to be 40 mm at most

10 mm can accommodate the antenna module 100, but it is not limited to this. In other words, compared to the conventional manner in which each antenna element is arranged independently, the antenna module 100 of the present invention occupies significantly less space.

In order to prove that the antenna module of the present invention can achieve the antenna performance that meets the requirements, the following is further explained based on relevant experimental data.

Please refer to FIG. 4A and FIG. 4B. FIG. 4A is a voltage standing wave ratio (VSWR) trend graph according to FIG. 2, and FIG. 4B is an antenna efficiency graph according to FIG. 2. In this embodiment, the first antenna element 110 and the second antenna element 120 may be coupled to form a WWAN protocol MIMO antenna. Correspondingly, the first frequency band of the first resonance mode provided by the first antenna element 110 and the second antenna element 120 may include frequency bands such as 1805 MHz to 2690 MHz, 3.5 GHz, and 5 GHz. It can be seen from the VSWR curve shown in FIG. 4A that when the antenna module 100 forms a WWAN protocol MIMO antenna, its VSWR in each of the above-mentioned first frequency bands is lower. That is, the antenna module 100 of the present invention is suitable for use as a MIMO antenna of the WWAN protocol.

In FIG. 4B, the curve 410 is the efficiency trend graph of the antenna module 100 in FIG. 2, and the curve 420 is the efficiency lower limit trend specified in the specification. It can be seen from FIG. 4B that the efficiency of the antenna module 100 of FIG. 2 is higher than the requirements of the specification, so it is suitable for use as a MIMO antenna of the WWAN protocol.

Please refer to Figure 5A, Figure 5B and Figure 5C, where Figure 5A is based on the voltage standing wave ratio graph shown in Figure 3A, Figure 5B is based on the voltage standing wave ratio graph shown in Figure 3B, and Figure 5C is based on the graph 3A and 3B show the antenna efficiency diagrams. In the embodiment of FIG. 5A, the first antenna element 110 may form the main antenna of the WLAN protocol. Correspondingly, the second frequency band of the second resonance mode provided by the first antenna element 110 may include frequency bands such as 2.4 GHz and 5 GHz. It can be seen from the VSWR curve shown in FIG. 5A that when the first antenna element 110 of the antenna module 100 forms the main antenna of the WLAN protocol, its VSWR in each of the above-mentioned second frequency bands is lower. That is, the first antenna element 110 of the antenna module 100 of the present invention is suitable for use as the main antenna of the WLAN protocol.

In the embodiment of FIG. 5B, the second antenna element 120 and the third antenna element 130 may be coupled to form an auxiliary antenna of the WLAN protocol. Correspondingly, the third frequency band of the third resonance mode provided by the second antenna element 120 and the third antenna element 130 may include frequency bands such as 2.4 GHz and 5 GHz. It can be seen from the VSWR curve shown in FIG. 5B that when the second antenna element 120 and the third antenna element 130 of the antenna module 100 cooperate to form an auxiliary antenna of the WLAN protocol, the VSWR of each of the above-mentioned third frequency bands is relatively high. low. That is, the second antenna element 120 and the third antenna element 130 of the antenna module 100 of the present invention are suitable for use as auxiliary antennas of the WLAN protocol.

In FIG. 5C, the curve 510 is the efficiency trend graph of the first antenna element 110 in FIG. 3A, the curve 520 is the efficiency trend graph of the second antenna element 120 and the third antenna element 130 in FIG. 3B, and the curve 530 is The trend of the lower limit of efficiency specified in the specification. It can be seen from FIG. 5C that the efficiency of the antenna elements shown in FIGS. 3A and 3B are higher than the requirements of the specification. It can be seen that the first antenna element 110 of FIG. 3A is suitable for use as the main antenna of a WLAN, and the second antenna element 120 and the third antenna element 130 of FIG. 3B are suitable for use as an auxiliary antenna of the WLAN.

In some embodiments, since the antenna module proposed by the present invention may be disposed near the metal foil of the communication device, the antenna module of the present invention may be additionally provided with related isolation means to prevent the metal foil from affecting the antenna. The performance of the module. The specific description is as follows.

Please refer to FIG. 6A, which is a schematic diagram of an antenna module and a metal sheet according to an embodiment of the present invention. As shown in FIG. 6A, the antenna module 100 may be adjacent to the metal sheet 699. Correspondingly, the antenna module 100 can be provided with an isolation portion 605, which can be used to isolate the first antenna element 110 that provides the second resonance mode from the second antenna element 120 and the third antenna element 120 that cooperate to provide the third resonance mode. Antenna element 130. In this embodiment, the isolation portion 605 can extend from the antenna module 100 into the metal sheet 699, but the invention is not limited to this.

For ease of description, it is still assumed that the first antenna element 110 that provides the second resonance mode is used as the main antenna of the WLAN, and the second antenna element 120 and the third antenna element 130 that provide the third resonance mode are cooperatively provided. It is used as an auxiliary antenna for WLAN.

Please refer to FIG. 6B, which is based on the S-parameter trend graph shown in FIG. 6A. In FIG. 6B, the curve 610 is the S21 trend graph of the antenna module 100 provided with the isolation portion 605, and the curve 620 is the S21 trend graph of the antenna module 100 without the isolation portion 605. It can be seen from FIG. 6B that compared to the antenna module 100 without the isolation portion 605, the antenna module 100 with the isolation portion 605 operates at 2.4 GHz (that is, the frequency band between the two vertical lines in FIG. 6B). ) And the S-parameters of 5 GHz and other frequency bands have been significantly improved. It can be seen that when the isolation portion 605 is provided, the performance of the antenna module 100 can be further improved by increasing the isolation between the main antenna and the auxiliary antenna of the WLAN.

In summary, by connecting the first, second, and third antenna elements with the first and second switching elements, the antenna module of the present invention can switch the first and second switching elements to the on state or Disconnected state enables the antenna module to provide only the first resonance mode (for example, corresponding to the MIMO antenna in the WWAN protocol), or to provide the second and third resonance modes at the same time (for example, respectively corresponding to the main antenna in the WLAN protocol) And auxiliary antenna). Thereby, the space occupied by the antenna module can be effectively reduced, so that the antenna module is more suitable for being installed in a lighter, thinner, short, and small electronic device.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the relevant technical field can make some changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of the present invention shall be determined by the scope of the attached patent application.

100: Antenna module 110: The first antenna element 111: first pattern 112: second pattern 110a: first endpoint 115: The first feed-in part 125: The second feeding part 120: second antenna element 120a: first endpoint 120b: second endpoint 130: third antenna element 130a: first endpoint 130b: second endpoint 141: The first switching element 142: second switching element 150: Grounding part 160: printed circuit board 410, 420, 510, 520, 610, 620: Curve 605: Isolation Department 699: metal sheet D1: first distance D2: second distance

FIG. 1 is a structural diagram of an antenna module according to an embodiment of the present invention. FIG. 2 is a schematic diagram of an antenna module capable of providing a first antenna mode according to FIG. 1. FIG. 3A is a schematic diagram of an antenna module capable of providing a second resonance mode according to FIG. 1. FIG. 3B is a schematic diagram of an antenna module capable of providing a third resonance mode according to FIG. 3A. FIG. 4A is a graph showing the trend of voltage standing wave ratio shown in FIG. 2. FIG. 4B is an antenna efficiency diagram according to FIG. 2. FIG. 5A is a graph showing the trend of the voltage standing wave ratio shown in FIG. 3A. FIG. 5B is a trend diagram of the voltage standing wave ratio shown in FIG. 3B. FIG. 5C is an antenna efficiency diagram according to FIG. 3A and FIG. 3B. FIG. 6A is a schematic diagram of an antenna module and a metal sheet according to an embodiment of the present invention. FIG. 6B is a trend diagram of S-parameters drawn according to FIG. 6A.

100: Antenna module

110: The first antenna element

110a: first endpoint

115: The first feed-in part

125: The second feeding part

120: second antenna element

120a: first endpoint

120b: second endpoint

130: third antenna element

130a: first endpoint

130b: second endpoint

141: The first switching element

142: second switching element

150: Grounding part

160: printed circuit board

D1: first distance

D2: second distance

Claims (18)

An antenna module includes: A first antenna element having a first feed-in portion for receiving a first signal; A first switching element; A second switching element; A second feeding part; A second antenna element electrically connected to the first antenna element through the first switching element, and electrically connected to the second feeding portion through the second switching element, the second feeding portion for receiving A second signal; A third antenna element; Wherein, in response to the first switching element being switched to an ON state and the second switching element being switched to an OFF state, the first antenna element is coupled to the second antenna element to cooperate in accordance with the first The signal provides a first resonance mode; Wherein, in response to the first switching element being switched to the off state and the second switching element being switched to the on state, the first antenna element independently provides a second resonance mode according to the first signal, The second antenna element is coupled to the third antenna element to cooperatively provide a third resonance mode according to the second signal. The antenna module according to claim 1, wherein the first antenna element has a first end, the second antenna element has a first end, and the first switch element is connected to the first Between the first end of the antenna element and the first end of the second antenna element. The antenna module according to claim 2, wherein the first end of the first antenna element and the first end of the second antenna element are separated by a first distance, and the The first distance is between 3 mm and 5 mm. The antenna module according to claim 2, wherein the second antenna element further has a second end, and the second switch element is connected to the second end of the second antenna element and the Between the second feeding part. The antenna module according to claim 4, wherein the third antenna element has a first end, and the first end of the third antenna element is separated from the second antenna element by a second distance, And the second distance is between 0.5 mm and 2 mm. The antenna module according to claim 5, wherein the antenna module further includes a ground portion, and the third antenna element further has a second end, and the second end of the third antenna element is electrically connected Connected to the ground part. The antenna module according to claim 1, wherein the first resonance mode corresponds to a first resonance path, and the first resonance path sequentially passes through the first feeding portion and the first antenna element , The first switching element and the second antenna element. According to the antenna module described in claim 1, wherein the second resonance mode corresponds to a second resonance path, and the second resonance path is located only on the first antenna element. The antenna module according to claim 1, wherein the third resonance mode corresponds to a third resonance path, and the third resonance path sequentially passes through the second feeding portion, the second switching element, The second antenna element and the third antenna element. The antenna module according to claim 1, wherein the first antenna element and the second antenna element cooperating in the first resonance mode form a multiple input multiple of a wireless wide area network protocol Output antenna. The antenna module according to the first item of the scope of patent application, wherein the first resonance mode has a plurality of first frequency bands, and the first frequency bands include 1805 MHz to 2690 MHz, 3.5 GHz, and 5 GHz. The antenna module described in claim 1, wherein the first antenna element operating in the second resonance mode forms a main antenna of a wireless local area network protocol, and operates in coordination with the third The second antenna element and the third antenna element in the resonance mode form an auxiliary antenna of the wireless local area network protocol. The antenna module according to claim 1, wherein the second resonance mode has a plurality of second frequency bands, the first antenna element includes a first pattern and a second pattern connected, the first The pattern and the second pattern are respectively used to provide the second frequency bands, wherein the first switch element is connected between the first pattern and the second antenna element, and the first feeding part is disposed on the second pattern . For the antenna module described in item 13 of the scope of patent application, the second frequency bands include 2.4 GHz and 5 GHz. The antenna module according to claim 1, wherein the third resonance mode has a plurality of third frequency bands, and the second antenna element and the third antenna element are separately used to provide the third frequency bands . For the antenna module described in item 15 of the scope of patent application, the third frequency bands include 2.4 GHz and 5 GHz. The antenna module described in item 1 of the scope of patent application further includes a printed circuit board, the first antenna element, the first switching element, the second switching element, the second feeding part, and the second day The wire element and the third antenna element are both arranged on the printed circuit board, and the size of the printed circuit board is not greater than 40 mm

10 mm. The antenna module according to claim 1, wherein the antenna module is adjacent to a metal sheet, and the antenna module further includes an isolation portion extending from the antenna module into the metal sheet And used for isolating the first antenna element providing the second resonance mode from the second antenna element and the third antenna element providing the third resonance mode in cooperation.

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