TW202023110A - Antenna structure and portable device thereof - Google Patents

Abstract

An antenna structure includes a base board，a first type antenna and a second typr antenna. The base plate includes a bottom plate and a side plate. The first type antenna sets in a corner area of the base plate for receives a first frequency. The first type antenna includes a side plate antenna and a bottom plate antenna. Parts of the plate antenna set in the bottom plate, the other parts set in the side plate. The bottom plate antenna sets in the bottom plate and connects to the side plate antenna. The second type antenna sets in a side of the base plate for receives a second frequency. Parts of the second type set in the bottom plate, the other parts set in the side plate.

Description

Antenna structure and mobile device

The present invention provides an antenna structure, especially a multi-band antenna structure.

Smart products are one of the most commonly used technology products in daily life, especially the mobile Internet is a recent trend. Furthermore, the use of mobile devices by users has changed from the original voice call request to the current networked multi-party use. Therefore, whether the antenna can transmit and receive in multiple frequency bands and whether its multi-frequency transceiver performance is good is one of the concerns of users.

However, in various current devices, the design of the antenna is limited by the internal space of the mobile device, which limits its frequency band performance. Furthermore, the addition of antenna design elements will also affect the installation space of other elements of the mobile device. In addition, since most mobile device housings are made of metal materials, the antenna radiation is also easily affected by the metal frame.

In view of this, the present invention proposes an antenna structure including: a substrate, including a bottom plate and a side plate; a first type antenna, arranged on the side corner area of the substrate, for transmitting and receiving the first frequency band, the first type antenna including: a side plate antenna, partly The side plate antenna is located on the bottom plate, and the other part of the side plate antenna is located on the side plate; and the bottom plate antenna is located on the bottom plate and is electrically connected to the side plate antenna; and the second type antenna is set on the side of the base plate for transmitting and receiving the second frequency band. Part of the second type antenna is located on the bottom plate, and another part of the second type antenna is located on the side plate.

Wherein, the side plate further includes a first side plate and a second side plate, and the other part of the side plate antenna is located on the first side plate and the second side plate.

Based on this, another part of the second type antenna is located on the first side plate.

In addition, the side-plate antenna includes: a first section, which extends from the first feed point to a first turning point; a second section, which extends from the first turning point to two sides and is approximately perpendicular to the first section. One end is electrically connected to the bottom plate antenna, and the other end extends to the second turning point and is located on the first side plate; the third section extends from the second turning point to the second side plate to the third turning point, so that part of the third section is located at the One side panel, the third section of the other part is located on the second side panel; the fourth section extends from the third turning point to the fourth turning point, where the fourth section and the third section are approximately perpendicular; the fifth section, starting from the fourth The turning point extends from the first side plate to the connection between the first side plate and the second side plate and is approximately parallel to the fourth section; and the first area is formed on the first side plate extending from the fifth section at the connection.

Furthermore, the backplane antenna includes: the sixth section, which extends from the second feed point to the fifth turning point; the seventh section, which extends from the fifth turning point in one direction to the sixth turning point and is approximately perpendicular to the sixth section ; The eighth section, from the sixth turning point to the second side plate extending to the seventh turning point and approximately perpendicular to the seventh section; the ninth section, extending from the seventh turning point to the first side plate to the eighth turning point and The seventh segment is approximately parallel; the tenth segment extends from the eighth turning point to the second side plate to the extension point and is approximately perpendicular to the ninth segment; the second area extends from the extension point on the bottom plate and is adjacent to the side corner Zone; the eleventh section, extending from the end corner of the second section to the ninth turning point; the twelfth section, extending from the ninth turning point to the tenth turning point; and the thirteenth section, starting from the tenth turning point The point extends from the second zone to the end point, where the end point is separated from the second zone by a distance.

Among them, the sixth segment and the tenth segment are located on the same extension line.

Furthermore, the end angle is located on the extension line of the tenth section.

In addition, the second-type antenna extends from the third feed point of the bottom plate, and extends from the first side plate to form an L-shaped configuration.

Furthermore, the second type antenna is formed by extending from the third feeding point of the bottom plate, and is formed by extending from the first side plate to form an F-shaped pattern.

The present invention further provides a mobile device comprising: a main body; and the above-mentioned antenna structure is disposed in the main body, wherein the first type antenna is located at the corner of the main body, and the second type antenna is located on one side of the main body.

The detailed features and advantages of the present invention will be described in detail in the following embodiments, and the content is sufficient to enable anyone familiar with the relevant art to understand the technical content of the present invention and implement it accordingly, and according to the content disclosed in this specification, the scope of patent application and the drawings Anyone who is familiar with relevant skills can easily understand the purpose and advantages of the present invention.

Please refer to FIG. 1 and FIG. 2. FIG. 1 is a schematic diagram of the antenna structure of the present invention. Fig. 2 is a schematic diagram of the first type antenna of the present invention. The antenna structure of the present invention includes a substrate 10, a first type antenna 20 and a second type antenna 30.

The substrate 10 is a rectangular plate structure, including a bottom plate 11 and a side plate 12, the side plate 12 is approximately perpendicular to the bottom plate 11, so that the overall appearance of the substrate 10 is generally box-shaped. Here, the substrate 10 is preferably an FR4 fiberglass substrate, and the thickness of the bottom plate 11 is preferably 0.8 mm, and the thickness of the side plate 12 is preferably 0.4 mm. In addition, the length and width of the substrate 10 are preferably 150.8 mm and 75.8 mm, respectively. Here, the first type antenna 20 and the second type antenna 30 are printed on the substrate 10.

The first type antenna 20 is disposed on the side corner area 13 of the substrate 10. According to the present invention, the side corner area 13 is the four corners of the substrate 10. The first type antenna 20 is used to transmit and receive the first frequency band. Here, the first frequency band may preferably be a 4G-LTE frequency band, but the present invention is not limited to this. In terms of the present invention, the 4G-LTE frequency band is applied to the 4x4MIMO antenna design. Further, the first type antenna 20 is preferably arranged at the four corners of the substrate 10, which mainly adopts direct feeding and matching circuit. Then connect the dual-path design.

Here, the first type antenna 20 includes a side plate antenna 21 and a bottom plate antenna 22. One part of the side plate antenna 21 is arranged on the bottom plate 11 and the other part is arranged on the side plate 12. The bottom plate antenna 22 is all disposed on the bottom plate 11 and is electrically connected to the side plate antenna 21 on the bottom plate 11.

Please refer to FIG. 3, which is a schematic diagram of the side plate antenna of the present invention. The side plate 12 further includes a first side plate 14 and a second side plate 15. Here, another part of the side plate antenna 21 is located on the first side plate 14 and the second side plate 15.

According to the present invention, the side plate antenna 21 includes a first section 21a, a second section 21b, a third section 21c, a fourth section 21d, a fifth section 21e, and a first area 21f. The first segment 21a extends from the first feeding point a in the Y-axis direction to the first turning point b. The second section 21b extends from the first turning point b to two sides (X-axis direction) and is approximately perpendicular to the first section 21a. One end of the second section 21b is electrically connected to the base antenna 22, and the other end extends to the second The turning point c is located on the first side plate 14. The third section 21c extends from the second turning point c toward the second side plate 15 and extends to the third turning point d. Based on this, the third section 21c extends from the first side plate 14 to the second side plate 15 so that part of the third section 21c is located on the first side plate 14 and another part of the third section 21c is located on the second side plate 15.

The fourth section 21d extends from the third turning point d to the fourth turning point e, so that the fourth section 21d is approximately perpendicular to the third section 21c. The fifth section 21e extends from the fourth turning point e to the first side plate 14 to the junction 16 of the first side plate 14 and the second side plate 15 and is approximately perpendicular to the fourth section 21d. Based on this, the fifth section 21e and the third section 21c will be approximately parallel, and the width of the fifth section 21e will be slightly larger than the third section 21c. Furthermore, the first region 21f is formed by extending from the fifth section 21e and is located on the first side plate 14. The length and width of the first zone 21f are preferably 3mm (X-axis) and 3.2mm (Z-axis). In addition, the length of the first section 21a is preferably 5mm, and the length of the second section 21b is preferably 10.9 mm, the length of the third section 21c is preferably 42.5 mm, the length of the fourth section 21d is preferably 3.3 mm, and the length of the fifth section 21e is preferably 33 mm. However, each segment of the antenna itself also includes a width. Therefore, in the measurement of the length of each segment of the antenna, the error affected by the width should be considered. Therefore, the aforementioned length and width are only examples, and the present invention is not limited to this.

Please refer to FIG. 4, which is a schematic diagram of the bottom plate antenna of the present invention. The floor antenna 22 includes a sixth section 22a, a seventh section 22b, an eighth section 22c, a ninth section 22d, a tenth section 22e, a second section 22f, an eleventh section 22g, a twelfth section 22h, and a thirteenth section 22i.

The bottom plate antenna 22 is located on the bottom plate 11, and the sixth section 22a of the bottom plate antenna 22 extends from the second feeding point f to the fifth turning point g. The seventh section 22b extends from the fifth turning point g in one direction to the sixth turning point h and is approximately perpendicular to the sixth section 22a. Here, as shown in FIG. 4, the bottom plate antenna 22 is located on the side corner area 13 at the upper left corner of the bottom plate 11, so the direction in which the seventh segment 22b extends is along the X axis to the right. Taking the bottom plate 11 of FIG. 4 as an example, if the bottom plate antenna 22 is located on the side corner area 13 at the upper right corner of the bottom plate 11, the direction along which the seventh segment 22b extends is along the X axis to the left.

The eighth section 22c extends from the sixth turning point h to the seventh turning point i and is approximately perpendicular to the seventh section 22b. The ninth section 22d extends from the seventh turning point i to the first side plate 14 to the eighth turning point j and is approximately perpendicular to the eighth section 22c. Based on this, the seventh segment 22b and the ninth segment 22d are approximately parallel. The tenth section 22e extends from the eighth turning point j to the second side plate 15 to the extension point k and is approximately perpendicular to the ninth section 22d. According to the present invention, the sixth section 22a and the tenth section 22e are preferably located on the same extension line, but the present invention is not limited to this.

Here, the second area 22f extends from the extension point k and is formed in a block on the bottom plate 11 adjacent to the side corner area 13, and the shape formed by the second area 22f is generally quadrilateral. Based on this, the eleventh section 22g extends from the end corner l of the second zone 22f in the same direction as the seventh section 22b, and extends to the ninth turning point m. According to the present invention, the end angle l is preferably located on the extension line of the tenth section 22e, but the present invention is not limited to this. The twelfth section 22h extends from the ninth turning point m to the tenth turning point n, so that the twelfth section 22h and the eleventh section 22g are approximately perpendicular to each other. Here, as shown in FIG. 4, it extends along the extension direction The Y axis extends downward and away from the second side plate 15. The thirteenth segment 22i extends from the tenth turning point n to the second zone 22f to the end point o, so that the end point o and the second zone 22f are separated by a distance.

Furthermore, the width of the second zone 22f is preferably 3mm (Y axis), in addition, the length of the sixth section 22a is preferably 8mm, the length of the seventh section 22b is preferably 5.3mm, and the eighth section 22c is The length of the ninth section 22d is preferably 5mm, the length of the ninth section 22d is preferably 5.3mm, the length of the tenth section 22e is preferably 2.7mm, and the starting point of the length of the eleventh section 22g is preferably added to the second The length of the area 22f is 30.8 mm, the length of the twelfth section 22h is preferably 3.3 mm, and the length of the thirteenth section 22i is preferably 23 mm. However, each segment of the antenna itself also includes a width. Therefore, in the measurement of the length of each segment of the antenna, the error affected by the width should be considered. Therefore, the aforementioned length and width are only examples, and the present invention is not limited to this.

Please refer to FIG. 1 again. The second type antenna 30 is arranged on the side of the substrate 11. According to the present invention, it is arranged at the connection between the first side plate 14 and the bottom plate 11 for transmitting and receiving the second frequency band. Here, the second frequency band is preferably the 5G frequency band, and the design number of the second antenna 30 can preferably be 8 (8x8), that is, each side can be set to 4, but the present invention is not based on this Is limited. In addition, when each second-type antenna 30 is disposed on the side of the substrate 11, a part of each second-type antenna 30 is located on the bottom plate 11, and the other part of each second-type antenna 30 is located on the side plate 12. Another part of the second type antenna 30 is located on the first side plate 14.

Please refer to FIG. 5, which is a schematic diagram (1) of the second type antenna of the present invention. The second type antenna 30 extends from the third feed point p of the bottom plate 11 to the first side plate 14, and the bottom plate 11 and the first side plate 14 are generally L-shaped structures. Here, an embodiment of the second type antenna 30 is preferably composed of Slit Antenna and Slot Antenna. Here, the length extending from the third feeding point p to the first side plate 14 is preferably 12.2mm (X-axis and Z-axis), and the antenna length on the first side plate 14 is preferably 3.5mm (Y-axis). ).

Please refer to FIG. 6, which is a schematic diagram (2) of the second type antenna of the present invention. The second type antenna 30 is formed by extending from the third feeding point p of the bottom plate 11 to the first side plate 14, and the bottom plate 11 and the first side plate 14 are almost F-shaped structures. Here, the length extending from the third feed point p to the first side plate 14 is preferably 12.2 mm (X axis and Z axis), and the length of the antenna on the first side plate 14 is preferably 8 mm (Y axis) . However, each of the aforementioned antennas also has a width. Therefore, in measuring the length of each antenna, the error affected by the width should be considered. Therefore, the aforementioned length and width are only examples, and the present invention is not limited to this. Furthermore, a preferred embodiment of the second antenna 30 of the present invention is designed to be 8×8, and furthermore, the second antenna 30 of the L-shaped configuration and the second antenna 30 of the F-shaped configuration are used at the same time. And the F-shaped structure 4x4 is surrounded by the L-shaped structure 4x4. This is merely an example, and the present invention is not limited thereto.

Please refer to FIG. 7, which is a schematic diagram of the mobile device of the present invention. The present invention further provides a mobile device including a main body 100 and an antenna structure 200. The mobile device of the present invention is preferably a mobile phone or a tablet computer. The main body 100 is preferably made of metal and has a rectangular structure. According to the present invention, the main body 100 includes an upper casing 101 and a lower casing 102. The antenna structure 200 is disposed on the lower housing 102. Based on this, the shape of the substrate 10 of the antenna structure 200 preferably corresponds to the shape of the main body 100, so that when the antenna structure 200 is disposed on the lower housing 102, the first type antenna 20 is located at the corner of the main body 100 and the second type antenna 30 is located The side of the body 100.

The antenna structure design of the present invention makes the mobile device not only strive for lightness, thinness, and appearance of metal materials, but also use Multi-input Multi-output (MIMO) to increase the appearance and use of mobile devices. Antenna channel capacity (Channel Capacity) and increase antenna throughput (Throughput). The antenna structure of the present invention is perpendicular to the system ground plane through the three-dimensional structure. In addition to effectively reducing the antenna design area, the present invention also uses a variety of different antenna forms to cover all different transceiver frequency bands. Through experiments, the antenna structure of the present invention is applied to mobile devices made of metal materials, which can reduce the antenna design area and maintain effective transmission and reception in various frequency bands, and solve the problem of insufficient antenna installation space and poor reception of conventional mobile devices.

Although the technical content of the present invention has been disclosed in the preferred embodiment as above, it is not intended to limit the present invention. Anyone who is familiar with this technique and makes some changes and modifications without departing from the spirit of the present invention should be covered by the present invention Therefore, the scope of protection of the present invention shall be subject to the scope of the attached patent application.

10: base plate 11: bottom plate 12: side plate 13: side corner area 14: first side plate 15: second side plate 16: connection 20: first type antenna 21: side plate antenna 21a: first section 21b: second section 21c: The third section 21d: the fourth section 21e: the fifth section 21f: the first zone 22: the floor antenna 22a: the sixth section 22b: the seventh section 22c: the eighth section 22d: the ninth section 22e: the tenth section 22f: the first section Second zone 22g: Eleventh section 22h: Twelfth section 22i: Thirteenth section 30: Second type antenna 100: Main body 101: Upper housing 102: Lower housing 200: Antenna structure a: First feed point b: first turning point c: second turning point d: third turning point e: fourth turning point f: second feed point g: fifth turning point h: sixth turning point i: seventh turning point j : Eighth turning point k: extension point l: end angle m: ninth turning point n: tenth turning point o: end point p: third feed point

[Figure 1] is a schematic diagram of the antenna structure of the present invention. [Figure 2] is a schematic diagram of the first type antenna of the present invention. [Figure 3] is a schematic diagram of the side plate antenna of the present invention. [Figure 4] is a schematic diagram of the floor antenna of the present invention. [Figure 5] is a schematic diagram (1) of the second type antenna of the present invention. [Figure 6] is a schematic diagram (2) of the second type antenna of the present invention. [Figure 7] is a schematic diagram of the mobile device of the present invention.

10: substrate

11: bottom plate

12: side panel

13: side corner area

20: The first type antenna

21: Side panel antenna

22: Base plate antenna

30: The second type antenna

Claims (10)

An antenna structure includes: a substrate, including a bottom plate and a side plate; a first type antenna, arranged in a side corner area of the substrate, for transmitting and receiving a first frequency band, the first antenna including: a side plate antenna , Part of the side plate antenna is located on the bottom plate, and another part of the side plate antenna is located on the side plate; and a bottom plate antenna located on the bottom plate and electrically connected to the side plate antenna; and a second type antenna disposed on one of the substrates The side is used for transmitting and receiving a second frequency band, wherein part of the second type antenna is located on the bottom plate, and another part of the second type antenna is located on the side plate. The antenna structure according to claim 1, wherein the side plate further includes a first side plate and a second side plate, and another part of the side plate antenna is located on the first side plate and the second side plate. The antenna structure according to claim 2, wherein another part of the second-type antenna is located on the first side plate. The antenna structure according to claim 2, wherein the side plate antenna comprises: a first section, extending from a first feeding point to a first turning point; a second section, from the first turning point to two sides Extend to be approximately perpendicular to the first section, wherein one end of the second section is electrically connected to the bottom plate antenna, and the other end extends to a second turning point and is located on the first side plate; a third section starts from the first side plate Two turning points extend to the second side plate to a third turning point, so that part of the third section is located on the first side plate, and the other part of the third section is located on the second side plate; a fourth section, from the first side plate Three turning points extend to a fourth turning point, where the fourth section is approximately perpendicular to the third section; a fifth section, extending from the fourth turning point to the first side plate to the first side plate and the A joint of the second side plate is approximately perpendicular to the fourth section; and a first area extending from the fifth section at the joint is formed on the first side plate. The antenna structure according to claim 2, wherein the backplane antenna includes: a sixth segment, extending from a second feed point to a fifth turning point; a seventh segment, going to a direction from the fifth turning point Extending to a sixth turning point and approximately perpendicular to the sixth section; an eighth section, extending from the sixth turning point to the second side plate to a seventh turning point and approximately perpendicular to the seventh section; A ninth section, extending from the seventh turning point to the first side plate to an eighth turning point and approximately perpendicular to the eighth section; a tenth section, extending from the eighth turning point to the second side plate To an extension point and approximately perpendicular to the ninth section; a second area extending from the extension point on the bottom plate and adjacent to the side corner area; an eleventh section, from one end of the second area The angle extends in this direction to a ninth turning point; a twelfth segment, extending from the ninth turning point to a tenth turning point; and a thirteenth segment, from the tenth turning point to the second zone Extend to an end point, where the end point is separated from the second zone by a distance. The antenna structure according to claim 5, wherein the sixth segment and the tenth segment are located on the same extension line. The antenna structure according to claim 5, wherein the end angle is located on an extension line of the tenth section. The antenna structure according to claim 2, wherein the second-type antenna is formed by extending from a third feeding point of the bottom plate, and the first side plate is extended to form an L-shaped pattern. The antenna structure according to claim 2, wherein the second-type antenna is formed by extending from a third feeding point of the bottom plate, and the first side plate is extended to form an F-shaped pattern. A mobile device, comprising: a body; and an antenna structure according to any one of claims 1 to 9, arranged in the body, wherein the first antenna is located at a corner of the body, and the second The antenna is located on one side of the body.

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