TWI868814B - Wireless network antenna of notebook - Google Patents

Abstract

A wireless network antenna of a notebook with a metal casing. The wireless network antenna is located at an open slot region between a right-side hinge and a left-side hinge of the notebook. The open slot region is at a top-cover of the notebook. The wireless network antenna comprises a main antenna, a first exciting portion, an auxiliary antenna and a second exciting portion. The main antenna having a first slot structure is located to the left of the right-side hinge. The projection of the first exciting portion on the plane where the first slot structure is located is located inside the first slot structure. The auxiliary antenna having a second slot structure is located to the left of the main antenna. The projection of the second exciting portion on the plane where the second slot structure is located is located inside the second slot structure. The main antenna is between the auxiliary antenna and the right-side hinge. The first slot structure and the second slot structure are both parallel to the top-cover. The notebook further comprises a bottom-cover wherein the top-cover, the bottom-cover, the right-side hinge and the left-side hinge are metal. The top-cover, the right-side hinge, the bottom-cover and the left-side hinge together form a closed metal slot region. Thus, it provides a wireless network antenna solution integrated with the hinge and metal casing.

Description

Wireless network antenna for laptops

The present invention relates to a laptop computer antenna, and in particular to a wireless network antenna for a laptop computer.

Common wireless communication technologies for existing mobile devices are included in the scope of wireless local area network (WLAN) and wireless wide area network (WWAN). If a laptop has both wireless local area network and wireless wide area network functions, it must use multiple antennas or antennas with multi-band to meet the use of multi-channel specifications, which often requires the antenna to occupy a large internal component area (antenna space). Wireless local area network is a necessary wireless specification for existing laptops. The newer commercial specification is the communication protocol called WiFi 6, which applies the 802.11ax specification. Wireless wide area network includes 2G, 3G, 4G LTE and the fifth generation mobile communication (5G) that is beginning to be promoted.

As the functions and performance of laptops continue to increase and the available wireless communication standards continue to expand, solutions that make use of the necessary mechanical components of laptops to combine them with antenna design have also been developed and used one by one. The integration of the mechanism and the antenna needs to take into account not to generate additional parts to occupy area or space, and the antenna is often more than a single case. New solutions that combine antennas with the overall design of laptops are continuously needed in the market.

In order to solve the above-mentioned technical problems, an embodiment of the present invention provides a wireless network antenna for a laptop computer, wherein the laptop computer has a metal case, and the wireless network antenna is located in a slotted area between the right and left rotating shafts of the laptop computer, and the slotted area is located on the upper cover of the laptop computer, and the wireless network antenna for the laptop computer includes a main antenna, a first excitation part, an auxiliary antenna, and a second excitation part. The main antenna has a first slot structure, which is located on the left side of the right rotating shaft. The projection of the first excitation part on the plane where the first slot structure is located is located within the first slot structure. The auxiliary antenna has a second slot structure, which is located on the left side of the main antenna. The projection of the second excitation part on the plane where the second slot structure is located is located within the second slot structure. The main antenna is located between the auxiliary antenna and the right rotating shaft, and the first slot structure and the second slot structure are parallel to the upper cover. The laptop also has a bottom cover, and the upper cover, the bottom cover, the right rotating shaft and the left rotating shaft are all made of metal. The upper cover, the right rotating shaft, the bottom cover and the left rotating shaft together constitute a closed metal slot area.

In summary, the embodiment of the present invention provides a wireless network antenna for a laptop computer, which can make good use of the metal slot area formed by the structure of the laptop body with a metal shell, and use the space in the slot area to configure the wireless network antenna, and can simultaneously realize the dual antenna configuration of the main antenna and the auxiliary antenna. Therefore, the space occupied by the antenna configured at other locations in the laptop can be reduced, so that the design of the embodiment of the present invention can be specifically responsible for the transmission of the wireless network, and the antennas at other locations only need to be responsible for the transmission of the wireless wide area network, which has a high industrial application value.

In order to further understand the features and technical contents of the present invention, please refer to the following detailed description and attached drawings of the present invention. However, such description and attached drawings are only used to illustrate the present invention and do not limit the scope of rights of the present invention.

1: Laptop computer

X, Y, Z: axis

11: Upper cover

12: Bottom cover

2: Wireless network antenna

13: Right side shaft

14: Left side shaft

110: Slotting area

19: Close the metal slot area

20: Double-sided substrate

201: First page

202: Second side

21: Main antenna

22: First Stimulation Section

23: Auxiliary antenna

24: Second stimulation section

210: First slot structure

230: Second slot structure

25: First grounding part

26: Second grounding part

210a: first long side

210b: Second longest side

210c: First short side

210d: Second short side

230a: The third longest side

230b: Fourth long side

230c: Third short side

230d: Fourth short side

221: First signal terminal

241: Second signal terminal

27: First coaxial line

28: Second coaxial line

27g: First ground terminal

28g: Second ground terminal

Figure 1 is a schematic diagram of a laptop computer provided by an embodiment of the present invention in an unfolded state.

Figure 2 is a schematic diagram of the back of a laptop computer provided by an embodiment of the present invention when in use.

FIG3 is a perspective view of a wireless network antenna for a laptop computer provided by an embodiment of the present invention.

Figure 4 is a schematic diagram of the second side of the wireless network antenna of a laptop computer provided by an embodiment of the present invention.

Figure 5 is a schematic diagram of the first side of the wireless network antenna of a laptop computer provided by an embodiment of the present invention.

Figure 6 is a schematic diagram of the feeding of the wireless network antenna of the laptop provided by the embodiment of the present invention.

Figure 7 is a graph showing the variation of the S11 parameter of the main antenna of the wireless network antenna provided by an embodiment of the present invention with respect to frequency.

Figure 8 is a graph showing the variation of the S11 parameter of the auxiliary antenna of the wireless network antenna provided by an embodiment of the present invention with respect to frequency.

Figure 9 is a graph showing the gain variation of the main antenna of the wireless network antenna provided by an embodiment of the present invention with respect to frequency.

Figure 10 is a graph showing the gain variation of the auxiliary antenna of the wireless network antenna provided by an embodiment of the present invention with respect to frequency.

Please refer to FIG. 1 and FIG. 2 at the same time. FIG. 1 is a schematic diagram of a laptop provided by an embodiment of the present invention in an unfolded state, and FIG. 2 is a schematic diagram of the back of a laptop provided by an embodiment of the present invention in a use state. The present embodiment provides a wireless network antenna for a laptop. The laptop 1 has a metal case, and the case includes an upper cover 11 and a bottom cover 12. For the sake of convenience, FIG. 1 removes the front case of the screen and the case of the keyboard surface. The front case of the screen corresponds to the upper cover 11 and is locked with the upper cover 11, and the case of the keyboard surface is locked with the bottom cover 12. This is easy to understand, so it is not repeated. The wireless network antenna 2 is located in a slotted area 110 between the right rotating shaft 13 and the left rotating shaft 14 of the laptop 1. The slotted area 110 is located in the upper cover 11 of the laptop. The upper cover 11 is substantially located on the XY plane in the figure. FIG. 1 shows the upper cover 11 and the bottom cover 12 unfolded to 180 degrees. FIG. 2 shows the upper cover 11 and the bottom cover 12 unfolded to approximately 90 degrees, so that the bottom cover 12 shown in FIG. 2 is substantially located in the XZ plane. The wireless network antenna 2 in FIG. 1 and FIG. 2 shows its installation position. For an example of the detailed structure of the wireless network antenna 2, please refer to the subsequent figures. The upper cover 11, the bottom cover 12, the right rotating shaft 13 and the left rotating shaft 14 are all made of metal, and the upper cover 11, the right rotating shaft 13, the bottom cover 12 and the left rotating shaft 14 together constitute a closed metal slot area 19. For the novel notebook computer case design, when the upper cover 11 and the bottom cover 12 are both made of metal, it is conducive to the innovation and style design of the appearance, which can attract users to buy. The design of this embodiment can be applied to such metal case products. For a simpler design, the slot area 110 is a groove, such as a horizontal rectangular groove in FIG. 1, that is, the long side of the rectangular groove is parallel to the common axis of the two rotating shafts. Referring to FIG. 2 again, in actual application, for example, the short side of the rectangular groove is no more than 10 mm, and although the slotted area 110 does not have a metal shell, it is only a narrow rectangle, so it can be easily covered with a non-metallic material (such as plastic) cover on the outer side of the upper cover 11 (not shown in FIG. 2), and a color similar to that of the metal shell can also be used, which will not have a significant impact on the overall visual design of the shell.

Next, please refer to FIG. 3, which is a perspective view of a wireless network antenna for a notebook computer provided by an embodiment of the present invention. The wireless network antenna 2 in FIG. 3 is configured on a double-sided substrate 20. The double-sided substrate 20 in FIG. 3 is shown in a perspective view, so the circuit patterns on the front and back of the double-sided substrate 20 can be seen at the same time. The front of the double-sided substrate 20 is the first surface 201, see FIG. 5. The back of the double-sided substrate 20 is the second surface 202, see FIG. 4, which will be further described later. Referring to FIG1 , the wireless network antenna 2 of the notebook computer 1 is roughly parallel to the XY plane, that is, the same plane as the upper cover 11 (XY plane), or parallel to the plane where the upper cover 11 is located (XY plane). It can generally be located near the plane where the upper cover 11 is located, and cooperates with the aforementioned non-metallic cover to form an overall appearance design with the upper cover 11. Referring to FIG3 , FIG4 and FIG5 , FIG4 is a schematic diagram of the second surface 202 of the wireless network antenna 2, and FIG5 is a schematic diagram of the first surface 201 of the wireless network antenna 2. The wireless network antenna 2 includes a main antenna 21, a first excitation part 22, an auxiliary antenna 23 and a second excitation part 24. The main antenna 21 has a first slot structure 210, which is located on the left side of the right-side rotation axis 13. The right-hand rotation axis 13 is located in the positive X direction of FIG. 3. The projection of the first excitation portion 22 on the plane where the first slot structure 210 is located is located within the first slot structure 210. The auxiliary antenna 23 has a second slot structure 230, which is located on the left side of the main antenna 21. The projection of the second excitation portion 24 on the plane where the second slot structure 230 is located is located within the second slot structure 230. Among them, the main antenna 21 is located between the auxiliary antenna 23 and the right-hand rotation axis 13, the first slot structure 210 and the second slot structure 230 are parallel to the upper cover 11, and the first slot structure 210 and the second slot structure 230 are in the same plane.

Referring to FIG. 4 and FIG. 5 , the double-sided substrate 20 has a first surface 201 and a second surface 202 facing each other, and the first slot structure 210 and the second slot structure 230 are located on the first surface 201, as shown in FIG. 5 . The first excitation portion 22 and the second excitation portion 24 are located on the second surface 202, as shown in FIG. 4 . Preferably, the first surface 201 faces the outer side of the upper cover 11, and the second surface 202 faces the inner side of the upper cover 11. Taking FIG. 2 as an example, the outer side is the surface facing the negative direction of the Z axis of FIG. 2 , and the inner side is the surface facing the positive direction of the Z axis of FIG. 2 . The orientation of the first surface 201 and the second surface 202 described above is based on the actual product application results. The antenna efficiency may be a better solution, but it is not limited to this. If the antenna efficiency can pass the specification, the second surface 202 can also be changed to face the outer side of the upper cover 11. In addition, the first slot structure 210 on the first surface 201 is a first grounding portion 25 that conducts through multiple through holes to the second surface 202. And the second slot structure 230 on the first surface 201 is a second grounding portion 26 that conducts through multiple through holes to the second surface 202. That is, the first grounding portion 25 is grounded with the first slot structure 210, and the second grounding portion 26 is grounded with the second slot structure 230. The above is a configuration that is convenient for coaxial feeding, which will be explained in Figure 6 later.

In this embodiment, the first slot structure 210 and the second slot structure 230 are both rectangular slots, but not limited thereto. Referring to FIG. 5 , the first slot structure 210 has a first long side 210a, a second long side 210b, a first short side 210c, and a second short side 210d, and the second slot structure 230 has a third long side 230a, a fourth long side 230b, a third short side 230c, and a fourth short side 230d, wherein the first long side 210a is parallel to the third long side 230a, the second long side 210b is parallel to the fourth long side 230b, the second short side 210d and the third short side 230c are close to each other, and the first short side 210c and the fourth short side 230d are far from each other. Among them, the first short side 210c is close to the right rotation axis 13, and the fourth short side 230d is far from the right rotation axis 13. That is to say, compared with the fourth short side 230d, the X coordinate value of the first short side 210c is larger. Preferably, referring to Figures 3 and 5, the first excitation portion 22 is far away from the first short side 210c and close to the second short side 210d. Preferably, the second excitation portion 24 is far away from the third short side 230c and close to the fourth short side 230d.

Preferably, the first long side 210a and the third long side 230a are on the upper side, and the second long side 210b and the fourth long side 230b are on the lower side. The upper side is the side close to the upper side of the user when the laptop is opened and in use mode; the lower side is the side close to the lower side of the user when in use mode. Referring to FIG. 6 , the first excitation part 22 and the second excitation part 24 are both implemented by coaxial cable feeding as an example. The first signal end 221 feeds the first excitation part 22 from the upper side to the lower side, and the second signal end 241 feeds the second excitation part 24 from the upper side to the lower side. In the case of including a feed line, the wireless network antenna 2 further includes a first coaxial feed line 27 and a second coaxial feed line 28, wherein the first coaxial feed line 27 has a first signal end 221 and a first ground end 27g, the first signal end 221 is the central conductor of the first coaxial feed line 27, the first ground end 27g is the outer conductor of the first coaxial feed line 27, the first signal end 221 is connected to the first excitation part 22, and the first ground end 27g is connected to the first slot structure 210 through the first grounding part 25, so that the first slot structure 210 is grounded. The second coaxial feed line 28 has a second signal end 241 and a second ground end 28g. The second signal end 241 is the central conductor of the second coaxial feed line 28, and the second ground end 28g is the outer conductor of the second coaxial feed line 28. The second signal end 241 is connected to the second excitation part 24, and the second ground end 28g is connected to the second slot structure 230 through the second ground part 26, so that the second slot structure 230 is grounded.

In terms of the actual product size antenna position configuration, preferably, the main antenna 21 and the auxiliary antenna 23 are located on the same double-sided substrate 20, and the size is taken as an example: the length is 90 mm, the width is 8 mm, and the double-sided substrate 20 is a FR4 substrate with a thickness of 0.4 mm. The length of the long side of the first slot structure 210 and the second slot structure 230 is about 39.5 mm, and the line width of the long side and the short side of the first slot structure 210 and the second slot structure 230 to the outer boundary is between 1 mm and 3 mm. In addition, the distance between the first excitation part 22 and the second short side 210d is about 6 mm, and the distance between the second excitation part 24 and the fourth short side 230d is about 6 mm. The distance between the main antenna 21 and the auxiliary antenna 23 at the closest point to each other is about 2.5 mm, that is, the distance between the second short side 210d and the third short side 230c is 2.5 mm. The gap between the wireless network antenna 2 and the upper cover 11 in the slot area 110 is maintained within a range of about 1 mm to 2 mm. The fundamental mode excited by the first slot structure 210 and the second slot structure 230 is a half-wavelength mode of a closed slot, and the center frequency is around 2.4 GHz. Referring to FIG. 7 and FIG. 8 again, the S11 parameter of the main antenna 21 meets -10 dB or better in the 2.4 GHz frequency range, and at least meets -7 dB or better in 5 GHz and 6 GHz to 7 GHz. The S11 parameter of the auxiliary antenna 23 satisfies -10dB or better in the 2.4GHz frequency range, and at least -8dB or better in the 5GHz and 6GHz to 7GHz range. The modes in the 5GHz and 6GHz to 7GHz range are high-order modes of the closed slot. Referring again to FIG9 and FIG10, the gain of the main antenna 21 and the auxiliary antenna 23 operating in the above frequency range is better than -6dB or better. The data of the dotted line in the figure is the actual gain of the present embodiment applied to the notebook computer product, and the data of the solid line is the product specification requirements of the notebook computer manufacturer. The technical solution of the present embodiment can meet the required specifications of the actual product. In addition, the isolation of the main antenna 21 and the auxiliary antenna 23 reaches -15dB, which has good isolation.

In summary, the wireless network antenna for a laptop provided by the embodiment of the present invention can make good use of the metal slot area formed by the structure of the laptop body with a metal shell, and use the space in the slot area to configure the wireless network antenna, and can simultaneously realize the dual antenna configuration of the main antenna and the auxiliary antenna. Therefore, the space occupied by the antenna configured at other locations in the laptop can be reduced, so that the design of the embodiment of the present invention can be specifically responsible for the transmission of the wireless network, and the antennas at other locations only need to be responsible for the transmission of the wireless wide area network, which has a high industrial application value.

The above description is merely an embodiment of the present invention and is not intended to limit the patent scope of the present invention.

20: Double-sided substrate

21: Main antenna

22: First Stimulation Section

23: Auxiliary antenna

24: Second stimulation section

210: First slot structure

230: Second slot structure

Claims (7)

A wireless network antenna for a laptop computer, the laptop computer having a metal case, the wireless network antenna being located in a slotted area between a right-side rotating shaft and a left-side rotating shaft of the laptop computer, the slotted area being located on a cover of the laptop computer, the wireless network antenna for the laptop computer comprising: a main antenna having a first slotted hole structure, located on the left side of the right-side rotating shaft; a first excitation part, the projection of which on the plane where the first slotted hole structure is located is located within the first slotted hole structure; an auxiliary antenna having There is a second slot structure located on the left side of the main antenna; and a second excitation portion, the projection of which on the plane where the second slot structure is located is located within the second slot structure; wherein the main antenna is located between the auxiliary antenna and the right-side rotation axis, and the first slot structure and the second slot structure are both parallel to the upper cover; wherein the notebook computer further has a bottom cover, and the upper cover, the bottom cover, the right-side rotation axis and the left-side rotation axis are all made of metal, and the upper cover, the right-side rotation axis, the bottom cover and the left-side rotation axis together constitute A closed metal slot area; wherein the first slot hole structure and the second slot hole structure are both rectangular slot holes, the first slot hole structure has a first long side, a second long side, a first short side and a second short side, the second slot hole structure has a third long side, a fourth long side, a third short side and a fourth short side, wherein the first long side is parallel to the third long side, the second long side is parallel to the fourth long side, the second short side and the third short side are close to each other, the first short side and the fourth short side are far away from each other, wherein the The first short side is close to the right rotation axis, and the fourth short side is far from the right rotation axis; Wherein, the first excitation part is far from the first short side and close to the second short side; wherein the second excitation part is far from the third short side and close to the fourth short side; wherein the first long side and the third long side are on an upper side, and the second long side and the fourth long side are on a lower side, a first signal end is fed from the upper side toward the lower side to feed the first excitation part, and a second signal end is fed from the upper side toward the lower side to feed the second excitation part. The wireless network antenna for a laptop computer according to claim 1 further comprises a first coaxial feed line and a second coaxial feed line, wherein the first coaxial feed line has a first signal end and a first ground end, the first signal end is connected to the first excitation part, and the first ground end is connected to the first slot structure; wherein the second coaxial feed line has a second signal end and a second ground end, the second signal end is connected to the second excitation part, and the second ground end is connected to the second slot structure. According to the wireless network antenna for a laptop computer as described in claim 1, the main antenna and the auxiliary antenna are located on a substrate. According to the wireless network antenna for a laptop computer as described in claim 3, the substrate is a double-sided substrate. According to the wireless network antenna for a laptop computer described in claim 4, the double-sided substrate has a first surface and a second surface opposite to each other, the first slot structure and the second slot structure are located on the first surface, and the first excitation portion and the second excitation portion are located on the second surface. According to the wireless network antenna for a laptop computer described in claim 5, the first surface faces the outer side of the upper cover, and the second surface faces the inner side of the upper cover. According to the wireless network antenna for a laptop computer described in claim 1, the slotted area is a rectangular groove.

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