TWI833256B - Generation mobile communication technology - Google Patents

Abstract

An antenna module with improved isolation for 5^th generation mobile communication technology comprises a substrate, a first main antenna, a second main antenna and an auxiliary antenna. The substrate has a first end and a second end opposite to each other. The first main antenna is disposed on the substrate and close to the first end, and has a first radiator and a second radiator. The first radiator has a first feeding terminal. The second radiator has a first grounding terminal. The first feeding terminal is not contact with a first feeding line to constitute coupling feeding. The first grounding terminal connects to a ground. The second radiator couples the first radiator. The second main antenna is disposed on the substrate and close to the second end, and has a third radiator and a fourth radiator. The third radiator has a second feeding terminal. The fourth radiator has a second grounding terminal. The second feeding terminal is not contact with a second feeding line to constitute coupling feeding. The second grounding terminal connects to the ground. The fourth radiator couples the third radiator. The auxiliary antenna is disposed on the substrate and between the first main antenna and the second main antenna, and has a third feeding terminal. The third feeding terminal is not contact with a third feeding line to constitute coupling feeding. Thus, isolations between these three antennas can be improved.

Description

Fifth-generation mobile communication antenna module to improve isolation

The present invention relates to a notebook computer antenna module, and in particular to a fifth-generation mobile communication antenna module that improves isolation.

Existing wireless communication technologies for mobile devices include wireless local area networks (WLAN) and wireless wide area networks (WWAN). Wireless LAN is a necessary wireless communication specification for existing notebook computers. In addition, wireless wide area network includes 2G, 3G, 4G LTE and 5G. When notebook computer brands further use the performance specifications of 5G, the operating bandwidth of the antenna further increase.

The 5G communication specifications of notebook computers are currently based on the 5G sub-6 band. However, if the existing design does not include the 5G sub-6 band, the antenna module needs to be used in multiple-input multiple-output (MIMO) situations. The requirements for antenna isolation are already very high, and it creates great design difficulties for built-in antennas. If the 5G sub-6 band is added, the antenna size will remain the same under the same restrictions, the bandwidth will be increased and the isolation requirements will be maintained. It is a very severe challenge.

In order to solve the aforementioned technical problems, embodiments of the present invention provide a fifth-generation mobile communication antenna module with improved isolation. Under the size limitation of a single built-in module antenna of a traditional notebook computer, the module can achieve three antennas This isolation requirement.

Embodiments of the present invention provide a fifth-generation mobile communication antenna module with improved isolation, including a substrate, a first main antenna, a second main antenna and an auxiliary antenna. The base has a first end and a second end opposite to each other. The first main antenna is disposed on the base and close to the first end, and has a first radiating part and a second radiating part. The first radiating part has a first feed end, and the second radiating part has a first A ground terminal, wherein the first feed terminal is not in contact with the first feed line and forms a coupled feed, the first ground terminal is connected to the ground, and the second radiation part is coupled to the first radiation part. The second main antenna is disposed on the base and close to the second end, and has a third radiating part and a fourth radiating part. The third radiating part has a second feed end, and the fourth radiating part has A second ground terminal, wherein the second feed terminal is not in contact with the second feed line and forms a coupled feed, the second ground terminal is connected to the ground, and the fourth radiating part is coupled to the third radiating part. The auxiliary antenna is disposed on the base and between the first main antenna and the second main antenna, and has a third feed end. The third feed end is not in contact with the third feed line and forms a coupled feed line. enter.

To sum up, embodiments of the present invention provide a fifth-generation mobile communication antenna module with improved isolation, which utilizes coupling feed and antenna structure configuration to improve the efficiency of the first main antenna, the second main antenna and the auxiliary antenna. The isolation between them has high industrial application value.

In order to further understand the characteristics and technical content of the present invention, please refer to the following detailed description and drawings of the present invention. However, these descriptions and attached drawings are only used to illustrate the present invention and do not grant rights to the present invention. Any limitations on the scope shall be imposed.

100:Base

1: First main antenna

2: Second main antenna

3: Auxiliary antenna

101:First end

102:Second end

100a: Front

100b: back

100c:top

100d: Bottom

11:First Radiation Department

12:Second Radiation Department

11a: First feed end

12a: First ground terminal

F1: first feeder

G: Ground

111:First branch

112:Second branch

121: Main section

122: Bending section

123: Extended end section

C1: First copper foil

C2: Second copper foil

21:The third radiation department

22:Fourth Radiation Department

21a: Second feed end

22a: Second ground terminal

F2: Second feeder

22b: The third ground terminal

3a: The third feed end

F3: The third feeder

31:Fifth Radiation Department

4: Ground conductor

41: Grooving

32: Grounding part

FIG. 1 is a three-dimensional schematic diagram of a fifth-generation mobile communication antenna module with improved isolation provided by an embodiment of the present invention.

FIG. 2 is a schematic diagram of a front view of a fifth-generation mobile communication antenna module with improved isolation provided by an embodiment of the present invention.

FIG. 3 is a schematic diagram of a rear view of a fifth-generation mobile communication antenna module with improved isolation provided by an embodiment of the present invention.

FIG. 4 is a schematic diagram of a top view of a fifth-generation mobile communication antenna module with improved isolation provided by an embodiment of the present invention.

FIG. 5 is a schematic diagram of a fifth-generation mobile communication antenna module with improved isolation provided by an embodiment of the present invention.

6A is a schematic diagram of a front view of a fifth-generation mobile communication antenna module with improved isolation provided by an embodiment of the present invention fed by a coaxial cable.

FIG. 6B is a schematic three-dimensional view of a fifth-generation mobile communication antenna module with improved isolation provided by an embodiment of the present invention fed by a coaxial cable.

FIG. 6C is another three-dimensional schematic diagram of the fifth-generation mobile communication antenna module with improved isolation provided by an embodiment of the present invention and fed by a coaxial cable.

Figure 7 is a partial enlarged view of the first main antenna and the first feeder provided by the embodiment of the present invention.

Figure 8 is a partial enlarged view of the second main antenna, auxiliary antenna, second feeder and third feeder provided by the embodiment of the present invention.

Figure 9 is a gain curve diagram of the first main antenna provided by an embodiment of the present invention.

Figure 10 is a gain curve diagram of the second main antenna provided by the embodiment of the present invention.

Figure 11 is a gain curve diagram of an auxiliary antenna provided by an embodiment of the present invention.

FIG. 12 is an isolation curve diagram of the first main antenna and the auxiliary antenna provided by the embodiment of the present invention.

FIG. 13 is an isolation curve diagram of the first main antenna and the second main antenna provided by the embodiment of the present invention.

Figure 14 is a graph of isolation between the auxiliary antenna and the second main antenna provided by the embodiment of the present invention.

Referring to FIGS. 1 to 5 , an embodiment of the present invention provides a fifth-generation mobile communication antenna module with improved isolation, including a substrate 100 , a first main antenna 1 , a second main antenna 2 and an auxiliary antenna 3 . The base 100 has a first end 101 and a second end 102 opposite to each other. The base 100 is generally in the shape of a long strip. The distance between the first end 101 and the second end 102 relative to each other is the length of the long side of the base 100 . The elongated substrate 100 arranges the first main antenna 1, the second main antenna 2 and the auxiliary antenna 3 in a row. This antenna module is used to be installed in the casing space above the screen of a notebook computer as a built-in antenna module. The casing space above the screen of the above-mentioned notebook computer is a commonly used location for placing built-in antenna modules. Some parts of the strip-like structure in the picture have incisions (dents), or the section of the strip is slightly similar to a trapezoid. This makes it easier to assemble the antenna module and the internal structure of the laptop more closely, making it more suitable for practical applications. The model does not affect the main characteristics of the antenna module.

Referring to FIG. 2 , a front view shows the antenna configuration of the front surface 100 a of the substrate 100 . Referring to FIG. 3 , a rear view shows the antenna configuration on the back side 100 b of the substrate 100 . Referring to FIG. 4 , a top view shows the antenna configuration on the upper surface 100 c of the substrate 100 . Refer to Figure 5, looking down The angle shows the antenna configuration of the bottom surface 100d of the substrate 100. The first main antenna 1 is disposed on the base 100 and close to the first end 101, and has a first radiating part 11 and a second radiating part 12. The first radiating part 11 has a first feed end 11a. The second radiation part 12 has a first ground terminal 12a, wherein the first feed terminal 11a is not in contact with the first feed line F1 and forms a coupled feed, and the first ground terminal 12a is connected to the ground G. Figures 6A, 6B, and 6C show the configuration of feeders and copper foil. The feeders include three, namely a first feeder F1, a second feeder F2, and a third feeder F3. The copper foil is mainly divided into two large areas, namely the first copper foil C1 and the second copper foil C2, which are used to ground the antenna module. The first copper foil C1 is below the first main antenna 1 and on The bottom surface 100d is connected to the base 100. The second copper foil C2 is below the second main antenna 2 and the auxiliary antenna 3 and is connected to the base 100 on the bottom surface 100d. In the figure, the copper foil located under each antenna represents the ground G. The ground connection method will not be described again in the following. Referring again to the bottom perspective view of FIG. 5 and the perspective view of FIG. 6B, since the above-mentioned first feed line F1 is provided on the bottom surface 100d of the base 100, the first feed end 11a extends to the bottom surface 100d of the base 100 to connect with the bottom surface 100d. The first feeder F1 achieves the best coupling.

Referring also to the partial enlarged view shown in FIG. 7 , the first radiating part 11 further includes a first branch 111 and a second branch 112 . The first branch 111 and the second branch 112 are respectively connected to the first feed end 11 a. The first branch 111 and the second branch 112 extend in opposite directions to each other. In the figure, most of the first radiating part 11 is located on the front surface 100 a , the first branch 111 extends toward the direction close to the auxiliary antenna 3 , and the second branch 112 extends toward the direction away from the auxiliary antenna 3 . The second branch 112 includes a U-shaped bend, which reverses the path of the second branch 112 so that the end of the second branch 112 is close to the first branch 111 and is coupled with the first branch 111 to stimulate more operating modes.

The second radiating part 12 is coupled to the first radiating part 11, and the second radiating part 12 is A large part of the radiating part 12 is located on the back surface 100b. The first radiating part 11 is located between the first ground terminal 12 a of the second radiating part 12 and the auxiliary antenna 3 . The second radiating part 12 has a main section 121, a bent section 122 and an extended end section 123. The main section 121 on the back 100b is connected to the first ground terminal 12a. The bent section 122 on the upper surface 100c is connected to the main section 121. On the front 100a The extended end section 123 is connected to the bent section 122 . The extended end section 123 is located between the first radiating part 11 and the auxiliary antenna 3 to improve the isolation between the first main antenna 1 and the auxiliary antenna 3 . In the figure, the extended end section 123 is not close to the auxiliary antenna 3 but closer to the first branch 111 of the first radiating part 11 to help the second radiating part 12 couple with the first radiating part 11 .

The second main antenna 2 is disposed on the base 100 and close to the second end 102, and has a third radiating part 21 and a fourth radiating part 22. The third radiating part 21 has a second feed end 21a, The fourth radiation part 22 has a second ground terminal 22a, wherein the second feed terminal 21a is not in contact with the second feed line F2 and forms a coupled feed, and the second ground terminal 22a is connected to the ground G. Referring to the bottom perspective view of FIG. 5 and the perspective view of FIG. 6B , since the above-mentioned second feed line F2 is provided on the bottom surface 100d of the base 100, the second feed end 21a extends to the bottom surface 100d of the base 100 to connect with the second feed line F2 located on the bottom surface 100d. Feeder F2 achieves optimal coupling.

Furthermore, referring to the partial enlarged view of FIG. 8 , the fourth radiating part 22 further includes a third ground terminal 22b. The third ground terminal 22b is connected to the ground G. The second ground terminal 22a and the third ground terminal 22b are parallel to each other. The fourth radiating part 22 is coupled to the third radiating part 21 . Furthermore, the second ground end 22 a of the fourth radiating part 22 is located between the third radiating part 21 and the auxiliary antenna 3 . Furthermore, the third radiating part 21 is closer to the ground G than the fourth radiating part 22 , and the third radiating part 21 and the fourth radiating part 22 extend in opposite directions to each other.

The auxiliary antenna 3 is provided on the base 100 and located on the first main There is a third feed end 3a between the antenna 1 and the second main antenna 2. The third feed end 3a is not in contact with the third feeder F3 and forms a coupled feed. The coupled feed formed by the first feed end 11a and the coupled feed formed by the third feed end 3a are used to improve the isolation between the first main antenna 1 and the auxiliary antenna 3.

The auxiliary antenna 3 further has a fifth radiating part 31. Since the above-mentioned third feeder F3 is provided on the bottom surface 100d of the base 100, the third feed end 3a extends to the bottom surface 100d of the base 100 to communicate with the third feeder line F3 located on the bottom surface 100d. F3 achieves optimal coupling. In addition, the fifth radiating part 31 is mainly disposed on the back surface 100b. In the figure, the fifth radiating part 31 has two branches.

Furthermore, the fifth radiating part 31 and the fourth radiating part 22 of the auxiliary antenna 3 extend in the same direction to each other (that is, extend toward the second end 102 ), and the fifth radiating part 31 and the third radiating part 21 extend in opposite directions to each other. , to improve the isolation between the second main antenna 2 and the auxiliary antenna 3 . In other words, for both the second antenna 2 and the auxiliary antenna 3, the feeding points are as far away as possible (the second feeding end 21a and the third feeding end 3a are far away from each other), and the grounded fourth radiating part 22 It is located between the third radiating part 21 (part of the second main antenna 2) and the fifth radiating part 31 (part of the auxiliary antenna 3), and the fourth radiating part 22 and the fifth radiating part 31 extend in the same direction. , so as to provide better isolation when the fifth radiating part 31 and the third radiating part 21 extend toward each other and are close to each other. The purpose of extending the fifth radiating part 31 and the third radiating part 21 close to each other is to reduce the size of the antenna. In the design of the embodiment of the present invention, the size of the antenna can be reduced and the isolation can be improved. (On the contrary, in the traditional less difficult design situation, if the fifth radiating part 31 and the third radiating part 21 are extended back to each other and away from each other, the antenna volume will be increased, so the design of the isolation degree is Easy to achieve, not challenging.)

Furthermore, both the second feeder F2 and the third feeder F3 are connected to the ground conductor 4, The ground conductor 4 is a part of the second copper foil C2. The ground conductor 4 has a slot 41, and the ground conductor 4 is directly connected to the ground G. The auxiliary antenna 3 further has a grounding portion 32. The connection between the second grounding terminal 22a and the grounding conductor 4 is located on the right side of the slot 41 (closer to the second end 102). The connection between the grounding portion 32 of the auxiliary antenna 3 and the grounding conductor 4 It is located on the left side of the slot 41 (further away from the second end 102 ) to improve the isolation between the second main antenna 2 and the auxiliary antenna 3 .

Based on the optimal arrangement of the above antenna configuration, the applicable frequency bands of the antenna include the existing wireless local area network frequency bands and the long-term evolution technology frequency bands including the third generation mobile communication (3G) to the fourth generation mobile communication (4G). and 5G sub-6 band. Referring to Figures 9, 10, and 11, Figure 9 shows the gain curve of the first main antenna 1. The first main antenna 1 is mainly used for the LTE main antenna (LTE is the abbreviation of Long Term Evolution Technology) (referred to as LTE MAIN). Figure 10 shows the gain curve of the second main antenna 2, which is the main antenna of LTE MIMO (MIMO is the abbreviation of Multiple Input Multiple Output) (referred to as LTE MIMO MAIN). Figure 11 shows the gain curve of the auxiliary antenna 3, which is the auxiliary antenna of LTE MIMO (referred to as LTE MIMO AUX).

When the size of the substrate 100 is used as the limitation of the antenna size, it is only necessary to use the substrate 100 with a length of 102 millimeters (mm), a width of 8.5 mm, and a thickness of 2.5 mm, then the above operational requirements of the wireless communication system can be achieved. Referring to the isolation curve diagram of the first main antenna 1 and the auxiliary antenna 3 in Figure 12, the isolation curve diagram of the first main antenna 1 and the second main antenna 2 in Figure 13, and the auxiliary antenna 3 and the second main antenna in Figure 14 Isolation curve of antenna 2. The antenna module according to the embodiment of the present invention has better isolation than the traditional antenna module and can meet the needs of notebook computer manufacturers. In particular, for isolation designs with frequencies in the range of 1710MHz to 4900MHz, it can provide better performance than traditional antenna designs.

To sum up, the fifth generation mobile communication antenna module with improved isolation provided by the embodiment of the present invention uses coupling feed and antenna structure configuration to improve the first main antenna, the second main antenna and the auxiliary antenna. The isolation between the three has high industrial application value.

The above descriptions are only examples of the present invention, and are not intended to limit the patent scope of the present invention.

100:Base

1: First main antenna

2: Second main antenna

101:First end

102:Second end

11:First Radiation Department

11a: First feed end

F1: first feeder

G: Ground

111:First branch

112:Second branch

123: Extended end section

C1: First copper foil

C2: Second copper foil

21:The third radiation department

22:Fourth Radiation Department

21a: Second feed end

22a: Second ground terminal

F2: Second feeder

22b: The third ground terminal

F3: The third feeder

4: Ground conductor

41: Grooving

32: Grounding part

Claims (9)

A fifth-generation mobile communication antenna module with improved isolation, including: a base with a first end and a second end opposite to each other; a first main antenna disposed on the base and close to the first terminal, has a first radiating part and a second radiating part, the first radiating part has a first feed end, the second radiating part has a first ground end, wherein the first feed end and a first A feed line is non-contact and constitutes a coupled feed, the first ground terminal is connected to a ground, the second radiating part is coupled to the first radiating part; a second main antenna is provided on the base and close to the second end, It has a third radiating part and a fourth radiating part, the third radiating part has a second feed end, the fourth radiating part has a second ground end, wherein the second feed end and a second feed line Not in contact and forming a coupling feed, the second ground terminal is connected to the ground, the fourth radiating part is coupled to the third radiating part; and an auxiliary antenna is provided on the base and is located between the first main antenna and the second Between the main antennas, there is a third feed end, which is not in contact with a third feed line and forms a coupled feed; wherein, the coupled feed formed by the first feed end is connected to the third feed line. The coupling feed formed by the input end is used to improve the isolation between the first main antenna and the auxiliary antenna. The fifth-generation mobile communication antenna module with improved isolation according to claim 1, wherein the first radiating part further includes a first branch and a second branch, and the first branch and the second branch respectively Connect this first feed. According to the fifth generation mobile communication antenna module with improved isolation as described in claim 1, the fourth radiating part further includes a third ground terminal, and the third ground terminal is connected to The ground, the second ground terminal and the third ground terminal are parallel to each other. According to the fifth generation mobile communication antenna module with improved isolation according to claim 1, the first radiating part is located between the first ground terminal of the second radiating part and the auxiliary antenna. The fifth-generation mobile communication antenna module with improved isolation according to claim 4, wherein the second radiating part has an extended end section, and the extended end section is located between the first radiating part and the auxiliary antenna. , to improve the isolation between the first main antenna and the auxiliary antenna. According to the fifth generation mobile communication antenna module with improved isolation according to claim 1, the second ground end of the fourth radiating part is located between the third radiating part and the auxiliary antenna. The fifth generation mobile communication antenna module with improved isolation according to claim 6, wherein the third radiating part is closer to the ground than the fourth radiating part, and the third radiating part and the fourth radiating part extend in opposite directions to each other. The fifth-generation mobile communication antenna module with improved isolation according to claim 7, wherein the auxiliary antenna further has a fifth radiating part, and the fifth radiating part and the fourth radiating part extend in the same direction with each other. , the fifth radiating part and the third radiating part extend in opposite directions to each other to improve the isolation between the second main antenna and the auxiliary antenna. The fifth-generation mobile communication antenna module with improved isolation according to claim 1, wherein the second feeder and the third feeder are both connected to a ground conductor, and the ground conductor has a slot, wherein the second feeder The connection between the ground terminal and the ground conductor is located on the right side of the slot, and the connection between a ground portion of the auxiliary antenna and the ground conductor is located on the left side of the slot to improve the connection between the second main antenna and the auxiliary antenna. between the antennas Isolation.

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