Antenna structure

Abstract

Provided is an antenna structure. The antenna structure is arranged on a metal piece and comprises a first slotted hole, a second slotted hole and a short circuit part. The first slotted hole is formed in the metal piece; the second slotted hole is formed in the metal piece, is positioned on one side of the first slotted hole and is used for feeding in a signal; the short circuit portion spans the first slot, is in a floating state and does not directly contact the first slot. Therefore, the antenna structure can solve the problem that the position of the equipment antenna is limited and improve the bandwidth range of the antenna.

Description

Technical Field

[0001] The present invention relates to an antenna structure, and in particular to a slot antenna structure. Background Art

[0002] As the demand for wireless transmission increases, general electronic devices need to be equipped with antennas for wireless transmission. However, in recent years, in response to market demand, the appearance of electronic devices has gradually become thinner and lighter, and the size of the antenna structure in electronic devices must also be reduced accordingly. In addition, the antenna structure in existing electronic devices cannot meet the requirements of the Wi-Fi 6E frequency band, and there is also the problem of poor antenna efficiency.

[0003] In view of this, designing an antenna structure that can provide multiple frequency bands in a limited device space has become an important issue faced by relevant industries in the field of antenna structure design.

[0004] Therefore, it is necessary to provide an antenna structure to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide an antenna structure, which can integrate the antenna in a limited space and improve the antenna bandwidth range through the antenna structural design and feeding technology, thereby solving the problems of limited antenna position, lack of frequency band and poor antenna efficiency of existing equipment.

[0006] According to an embodiment of the structural aspect of the present invention, an antenna structure is provided, the antenna structure is disposed on a metal member, and the antenna structure includes a first slot, a second slot, and a short-circuit portion. The first slot is formed on the metal member. The second slot is formed on the metal member, located on one side of the first slot, for feeding a signal. The short-circuit portion crosses the first slot, and the short-circuit portion is in a floating state and does not directly contact the first slot.

[0007] According to an embodiment of the structural aspect of the present invention, an antenna structure is provided, the antenna structure is arranged on a metal member, and the antenna structure includes a first slot, a second slot, a grounding portion and a short-circuit portion. The first slot is formed on the metal member for feeding a signal. The second slot is formed on the metal member and is located on one side of the first slot. The grounding portion is coupled to the metal member. The short-circuit portion corresponds to the second slot and is coupled to the grounding portion.

[0008] The present invention has the following advantages: First, the antenna structure of the present invention utilizes the position configuration of the first slot, the second slot, the short-circuit portion, the radiation portion and the feeding portion to excite transmission signals of multiple frequency bands; Second, the resonant frequency excited by the antenna structure of the present invention can meet the Wi-Fi 6E frequency band requirements and provide a wider bandwidth and better antenna efficiency; Third, the antenna structure of the present invention can be combined with the device to which it is attached according to the spatial configuration of the device, thereby overcoming the problem of limited antenna position. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 A schematic diagram illustrating an antenna structure according to a first embodiment of the present invention;

[0010] Figure 2 Draw according to Figure 1 Schematic diagram of frequency path 1, frequency path 2, frequency path 3 and frequency path 4 of the antenna structure;

[0011] Figure 3 Draw according to Figure 1 Schematic diagram of frequency path five and frequency path six of the antenna structure;

[0012] Figure 4 Draw according to Figure 1 The overall bandwidth waveform of the frequency and return loss of the antenna structure;

[0013] Figure 5 A schematic diagram illustrating an antenna structure according to a second embodiment of the present invention;

[0014] Figure 6 Draw according to Figure 5 Schematic diagram of frequency path 1 and frequency path 3 of the antenna structure;

[0015] Figure 7 Draw according to Figure 5 A schematic diagram of frequency path 2, frequency path 4, frequency path 5 and frequency path 6 of the antenna structure; and

[0016] Figure 8 Draw according to Figure 5 The overall bandwidth waveform of the frequency and return loss of the antenna structure.

[0017] Main component symbols:

[0018] 10 Metal parts

[0019] 100, 200 antenna structure

[0020] 110, 210 first slot

[0021] 111, 221 Part 1

[0022] 112, 222 Part 2

[0023] 120, 220 Second slot

[0024] 121, 211 first paragraph

[0025] 122, 212 Second paragraph

[0026] 130, 230 grounding part

[0027] 140, 240 short circuit

[0028] 150, 250 Radiation

[0029] 160, 260 feed section

[0030] d1 first length

[0031] d2 second length

[0032] L1 First axis direction

[0033] L2 Second axis direction

[0034] S Signal Source

[0035] w1 first width

[0036] w2 second width DETAILED DESCRIPTION

[0037] See also Figure 1 , Figure 1 The schematic diagram of the antenna structure 100 according to the first embodiment of the present invention is shown. The antenna structure 100 is disposed on a metal member 10, and the antenna structure 100 includes a first slot 110, a second slot 120, a grounding portion 130, a short-circuit portion 140, a radiating portion 150, and a feeding portion 160. The first slot 110 and the second slot 120 are formed on the metal member 10, the grounding portion 130 is coupled to the metal member 10, and the short-circuit portion 140, the radiating portion 150, and the feeding portion 160 are disposed on the metal member 10.

[0038] In the first embodiment, the metal member 10 can be integrally formed in the housing structure of an electronic device (such as a notebook computer, a personal digital assistant or other portable electronic device), but the present invention is not limited thereto. The first slot 110 and the second slot 120 are closed slots. The grounding portion 130 is a ground copper foil, and is coupled to a system ground of the electronic device, but the present invention is not limited thereto. The short-circuit portion 140, the radiation portion 150 and the feeding portion 160 can be formed on the surface of a flexible printed circuit (FPC), or made on a plastic part by laser direct structuring (LDS), and the positions of the short-circuit portion 140, the radiation portion 150 and the feeding portion 160 on the carrier (flexible printed circuit, plastic part) correspond to the positions of the first slot 110 and the second slot 120 on the metal part 10, so that the relative positions of the carrier and the metal part 10 are fixed to form the antenna structure 100, wherein the relative position distance between the carrier and the metal part 10 is less than or equal to 3 mm, but the present invention is not limited thereto. In this way, the antenna structure 100 can be integrated with the device in different ways according to the spatial configuration of the device to be attached to overcome the problem of limited antenna position.

[0039] Reference Figure 1 As shown, the first slot 110 is formed on the metal member 10 along a first axial direction L1, and the second slot 120 is formed on the metal member 10 along a second axial direction L2. The second slot 120 is located on one side of the first slot 110 for feeding a signal. The second axial direction L2 is parallel to the first axial direction L1, and there is a spacing between the first slot 110 and the second slot 120. The first slot 110 has a first length d1 and a first width w1 along the first axial direction L1, and the second slot 120 has a second length d2 and a second width w2 along the second axial direction L2. The first length d1 is equal to the second length d2, and the first width w1 is equal to the second width w2. In the first embodiment, the first length d1 and the second length d2 are both 50 mm; the first width w1 and the second width w2 are both 2 mm, but the present invention is not limited thereto.

[0040] Reference Figure 1As shown, the short-circuit portion 140 spans the first slot 110, and the short-circuit portion 140 is in a floating state and does not directly contact the first slot 110. In the first embodiment, the short-circuit portion 140 spans the first slot 110 perpendicular to the first axial direction L1, but the present invention is not limited thereto. In other embodiments, the direction in which the short-circuit portion 140 spans the first slot 110 intersects with the first axial direction L1. The radiation portion 150 corresponds to the second slot 120. Further explanation, the radiation portion 150 can be formed on the surface of the flexible circuit board, or can be formed on the plastic part by laser engraving, and its vertical projection is located in the second slot 120, but the present invention is not limited thereto. In the first embodiment, the short-circuit portion 140 and the radiation portion 150 are not directly coupled or connected. The length of the radiation portion 150 is less than the second length d2. In the first embodiment, the length of the radiation portion 150 is 13 mm, but the present invention is not limited thereto.

[0041] Reference Figure 1 As shown, the feeding portion 160 is adjacent to the radiating portion 150 and is located on a side of the second slot 120 away from the first slot 110. The feeding portion 160 is electrically connected to a coaxial transmission line (not shown) and coupled to a signal source S for feeding a signal. Specifically, the signal is fed into the radiating portion 150 by the feeding portion 160, and resonates at the first slot 110 and the second slot 120 to generate transmission signals of multiple frequency bands.

[0042] Thus, the antenna structure 100 of the present invention utilizes the positional arrangement of the first slot 110 , the second slot 120 , the short-circuit portion 140 , the radiation portion 150 and the feeding portion 160 to stimulate transmission signals of multiple frequency bands, thereby providing a wider bandwidth and better antenna efficiency.

[0043] See also Figure 2 , Figure 3 as well as Figure 4 ,in Figure 2 Draw according to Figure 1 Schematic diagram of frequency path 1, frequency path 2, frequency path 3 and frequency path 4 of the antenna structure 100; Figure 3 Draw according to Figure 1 A schematic diagram of a frequency path five and a frequency path six of the antenna structure 100; and Figure 4 Draw according to Figure 1 FIG. 1 is a waveform diagram of the overall bandwidth of the frequency and return loss of the antenna structure 100. FIG.

[0044] Reference Figure 2 and Figure 4As shown, the antenna structure 100 provides frequency bands of multiple paths including frequency path 1, frequency path 2, frequency path 3 and frequency path 4 through the radiation part 150. The short-circuit part 140 divides the first slot 110 into a first part 111 and a second part 112. The length of the first part 111 is not equal to the length of the second part 112. In the first embodiment, the length of the second part 112 is greater than the length of the first part 111. The length of the first part 111 is 12.5 mm, and the length of the second part 112 is 36.5 mm, but the present invention is not limited thereto. The radiation part 150 couples and excites the second slot 120 to form the frequency path 1, thereby providing a resonant frequency between 2300 MHz and 2700 MHz. The radiation part 150 couples and excites the second part 112 to form the frequency path 2, thereby providing a resonant frequency between 4850 MHz and 6800 MHz. The radiation part 150 uses its own length as the frequency path 3 of the radiation, and provides a resonance frequency between 6000 MHz and 7100 MHz. The radiation part 150 couples and excites the first part 111 to form a frequency path 4, and provides a resonance frequency between 6200 MHz and 7500 MHz.

[0045] Thereby, frequency path one formed by coupling and exciting the second slot 120 through the radiation portion 150 can provide low-frequency band characteristics, frequency path two formed by coupling and exciting the second part 112 through the radiation portion 150 can provide part of mid- and high-frequency band characteristics, frequency path three through the radiation portion 150 itself can provide another part of mid- and high-frequency band characteristics, and frequency path four formed by coupling and exciting the first part 111 through the radiation portion 150 can provide part of high-frequency band characteristics.

[0046] Reference Figure 3 and Figure 4 As shown, the antenna structure 100 provides frequency bands of frequency path five and frequency path six through the radiation portion 150. The radiation portion 150 divides the second slot 120 into a first section 121 and a second section 122. The lengths of the first section 121 and the second section 122 are not equal. In the first embodiment, the length of the first section 121 is greater than the length of the second section 122. The length of the first section 121 is 27 mm, and the length of the second section 122 is 10 mm, but the present invention is not limited thereto. The radiation portion 150 couples and excites the first section 121 to form the frequency path five, and provides a resonant frequency between 5800 MHz and 6500 MHz. The radiation portion 150 couples and excites the second section 122 to form the frequency path six, and provides a resonant frequency between 7000 MHz and 7800 MHz.

[0047] Thereby, the frequency path five formed by coupling and exciting the first section 121 through the radiation part 150 can provide some mid-high frequency band characteristics, and the frequency path six formed by coupling and exciting the second section 122 through the radiation part 150 can provide Wi-Fi 6E characteristics.

[0048] See also Figure 5 , Figure 5 The schematic diagram of the antenna structure 200 according to the second embodiment of the present invention is shown. The antenna structure 200 is disposed on a metal member 10, and the antenna structure 200 includes a first slot 210, a second slot 220, a grounding portion 230, a short-circuit portion 240, a radiating portion 250, and a feeding portion 260. The first slot 210 and the second slot 220 are formed on the metal member 10, the grounding portion 230 is coupled to the metal member 10, and the short-circuit portion 240, the radiating portion 250, and the feeding portion 260 are disposed on the metal member 10.

[0049] In the second embodiment, the metal part 10 can be integrally formed in the shell structure of the electronic device (such as a notebook computer, a personal digital assistant or other portable electronic device), but the present invention is not limited to this. The first slot 210 and the second slot 220 are closed slots. The short-circuit portion 240, the radiation portion 250 and the feeding portion 260 can be formed on the surface of the flexible circuit board, or can be made on the plastic part by laser engraving, and the positions of the short-circuit portion 240, the radiation portion 250 and the feeding portion 260 on the carrier (flexible circuit board, plastic part) correspond to the positions of the first slot 210 and the second slot 220 on the metal part 10, so that the relative position of the carrier and the metal part 10 is fixed to form the antenna structure 200, wherein the relative position distance between the carrier and the metal part 10 is less than or equal to 3 mm, but the present invention is not limited to this. The grounding portion 230 and Figure 1 The grounding portion 130 of the embodiment is the same and will not be described in detail here. Thus, the antenna structure 200 can be integrated with the device in different ways according to the spatial configuration of the device to be attached to, thereby overcoming the problem of limited antenna position.

[0050] Reference Figure 5 As shown, the first slot 210 is formed on the metal member 10 along a first axial direction L1 for feeding a signal, and the second slot 220 is formed on the metal member 10 along a second axial direction L2, and the second slot 220 is located at one side of the first slot 210. In the second embodiment, the structural dimensions of the first slot 210 and the second slot 220 are the same as those of the first slot 110 and the second slot 120 of the first embodiment, and are not further described herein.

[0051] Reference Figure 5As shown, the short-circuit portion 240 corresponds to the second slot 220 and is coupled to the grounding portion 230. The radiating portion 250 corresponds to the first slot 210. Further explanation, the short-circuit portion 240 and the radiating portion 250 can be formed on the surface of the flexible circuit board, or can be formed on the plastic part by laser engraving, so that the vertical projection of the short-circuit portion 240 is located in the second slot 220, and the vertical projection of the radiating portion 250 is located in the first slot 210, but the present invention is not limited thereto. In the second embodiment, the short-circuit portion 240 and the radiating portion 250 are not directly coupled or connected. In the second embodiment, the short-circuit portion 240 is generally L-shaped.

[0052] Reference Figure 5 As shown, the feeding portion 260 is coupled to the radiating portion 250, and the feeding portion 260 extends perpendicularly to the second axial direction L2 across the second slot 220 toward the first slot 210, and is used to feed the signal. The feeding portion 260 is electrically connected to a coaxial transmission line (not shown) and coupled to a signal source S for feeding the signal. Specifically, the signal is fed into the radiating portion 250 by the feeding portion 260, and resonance is formed at the first slot 210 and the second slot 220 to generate transmission signals of multiple frequency bands. In addition, by extending the feeding portion 260 across the second slot 220 toward the first slot 210, the low frequency band formed can be kept away from the grounding portion 230, so as to further improve the antenna radiation field pattern to cope with different implementation environments.

[0053] Thus, the antenna structure 200 of the present invention utilizes the positional arrangement of the first slot 210, the second slot 220, the short-circuit portion 240, the radiation portion 250 and the feeding portion 260 to stimulate transmission signals of multiple frequency bands, thereby providing a wider bandwidth and better antenna efficiency.

[0054] See also Figure 6 , Figure 7 as well as Figure 8 As shown, Figure 6 Draw according to Figure 5 Schematic diagram of frequency path 1 and frequency path 3 of the antenna structure 200; Figure 7 Draw according to Figure 5 Schematic diagram of frequency path 2, frequency path 4, frequency path 5 and frequency path 6 of the antenna structure 200; and Figure 8 Draw according to Figure 5 The overall bandwidth waveform of the frequency and return loss of the antenna structure 200 is shown.

[0055] Reference Figure 6 and Figure 8As shown, the antenna structure 200 provides frequency bands of frequency path 1 and frequency path 3 through the radiating portion 250. The radiating portion 250 couples and excites the first slot 210 to form frequency path 1, and provides a resonant frequency between 2300 MHz and 2700 MHz. The radiating portion 250 uses its own length as the frequency path 3 of the radiation, and provides a resonant frequency between 6000 MHz and 7100 MHz.

[0056] Thereby, the frequency path 1 formed by coupling and exciting the first slot 210 through the radiation portion 250 can provide low-frequency characteristics, and the frequency path 3 through the radiation portion 250 itself can provide part of the mid-high frequency characteristics.

[0057] Reference Figure 7 and Figure 8 As shown, the antenna structure 200 provides frequency bands of multiple paths of frequency path 2, frequency path 4, frequency path 5 and frequency path 6 through the radiation portion 250. The feeding portion 260 divides the second slot 220 into a first portion 221 and a second portion 222, wherein the length of the first portion 221 is not equal to the length of the second portion 222. In the second embodiment, the length of the second portion 222 is greater than the length of the first portion 221, the length of the first portion 221 is 12.5 mm, and the length of the second portion 222 is 36.5 mm, but the present invention is not limited thereto. The radiation portion 250 divides the first slot 210 into a first section 211 and a second section 212, wherein the length of the first section 211 is not equal to the length of the second section 212. In the second embodiment, the length of the first section 211 is greater than the length of the second section 212, the length of the first section 211 is 32.5 mm, and the length of the second section 212 is 9 mm, but the present invention is not limited thereto. The radiation portion 250 couples and excites the second portion 222 to form a frequency path two, and provides a resonant frequency between 4850 MHz and 6800 MHz. The radiation portion 250 couples and excites the first portion 221 to form a frequency path four, and provides a resonant frequency between 6200 MHz and 7500 MHz. The radiation portion 250 couples and excites the first section 211 to form a frequency path five, and provides a resonant frequency between 5800 MHz and 6500 MHz. The radiation portion 250 couples and excites the second section 212 to form a frequency path six, and provides a resonant frequency between 7000 MHz and 7800 MHz.

[0058] Thereby, frequency path two formed by coupling and exciting the second part 222 through the radiation part 250 can provide some mid-high frequency band characteristics, frequency path four formed by coupling and exciting the first part 221 through the radiation part 250 can provide some high frequency band characteristics, frequency path five formed by coupling and exciting the first section 211 through the radiation part 250 can provide some mid-high frequency band characteristics, and frequency path six formed by coupling and exciting the second section 212 through the radiation part 250 can provide Wi-Fi 6E characteristics.

[0059] It can be seen from the above embodiments that the present invention has the following advantages: First, the antenna structure of the present invention utilizes the position configuration of the first slot, the second slot, the short-circuit portion, the radiation portion and the feeding portion to excite transmission signals of multiple frequency bands; Second, the resonant frequency excited by the antenna structure of the present invention can meet the Wi-Fi 6E frequency band requirements and provide a wider bandwidth and better antenna efficiency; Third, the antenna structure of the present invention can be combined with the device to which it is attached according to the spatial configuration of the device, thereby overcoming the problem of limited antenna position.

[0060] Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Any technician in this field should be able to make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the invention should be based on the scope defined by the attached claims.

Claims

1. An antenna structure, the antenna structure being disposed on a metal member, the antenna structure comprising: a first slot formed on the metal member; a second slot formed on the metal member and located at one side of the first slot for feeding a signal; and A short-circuit portion spans across the first slot, and the short-circuit portion is in a floating state and does not directly contact the first slot.

2. The antenna structure according to claim 1, further comprising: a grounding portion coupled to the metal member; a radiation portion, the radiation portion corresponding to the second slot; as well as A feeding portion is disposed on the metal component, adjacent to the radiation portion and located at a side of the second slot away from the first slot, and is used for feeding the signal.

3. The antenna structure as described in claim 2, wherein the first slot is formed on the metal part along a first axial direction, the second slot is formed on the metal part along a second axial direction, the second axial direction is parallel to the first axial direction, and the first slot and the second slot are separated by a distance. 4 . The antenna structure as claimed in claim 3 , wherein the short-circuit portion crosses the first slot in a direction perpendicular to the first axis. 5 . The antenna structure as claimed in claim 3 , wherein the first slot has a first length along the first axis direction, the second slot has a second length along the second axis direction, and the first length is equal to the second length.

6. The antenna structure as claimed in claim 2, wherein the short-circuit portion divides the first slot into a first portion and a second portion; in, The length of the first portion is not equal to the length of the second portion.

7. The antenna structure according to claim 6, wherein: The radiation portion couples and excites the first portion to generate a resonance frequency between 6200 MHz and 7500 MHz; The radiation portion couples and excites the second portion at a resonance frequency ranging from 4850 MHz to 6800 MHz.

8. The antenna structure according to claim 2, wherein: The radiation part provides a resonance frequency between 6000 MHz and 7100 MHz; The radiation portion couples and excites the second slot to produce a resonance frequency between 2300 MHz and 2700 MHz.

9. The antenna structure as claimed in claim 2, wherein the radiating portion divides the second slot into a first section and a second section; in, The length of the first section is not equal to the length of the second section.

10. The antenna structure according to claim 9, wherein: The radiation portion couples and excites the first section to a resonance frequency between 5800 MHz and 6500 MHz; The radiation portion couples and excites the second segment to produce a resonance frequency between 7000 MHz and 7800 MHz.

11. An antenna structure, the antenna structure being disposed on a metal member, the antenna structure comprising: a first slot formed on the metal member for feeding a signal; a second slot formed on the metal member and located at one side of the first slot; a grounding portion coupled to the metal member; as well as A short-circuit portion corresponds to the second slot and is coupled to the ground portion.

12. The antenna structure according to claim 11, further comprising: a radiation portion, the radiation portion corresponding to the first slot; as well as A feeding portion is disposed on the metal component and coupled to the radiation portion. The feeding portion extends across the second slot toward the first slot and is used to feed the signal.

13. The antenna structure as described in claim 12, wherein the first slot is formed on the metal part along a first axial direction, the second slot is formed on the metal part along a second axial direction, the second axial direction is parallel to the first axial direction, and the first slot and the second slot are separated by a distance. 14 . The antenna structure as claimed in claim 13 , wherein the feeding portion crosses the second slot in a direction perpendicular to the second axis. 15 . The antenna structure as claimed in claim 13 , wherein the first slot has a first length along the first axis direction, the second slot has a second length along the second axis direction, and the first length is equal to the second length.

16. The antenna structure as claimed in claim 12, wherein the feeding portion divides the second slot into a first portion and a second portion; in, The length of the first portion is not equal to the length of the second portion.

17. The antenna structure according to claim 16, wherein: The radiation portion couples and excites the first portion to generate a resonance frequency between 6200 MHz and 7500 MHz; The radiation portion couples and excites the second portion at a resonance frequency ranging from 4850 MHz to 6800 MHz.

18. The antenna structure according to claim 12, wherein: The radiation part provides a resonance frequency between 6000 MHz and 7100 MHz; The radiation portion couples and excites the first slot to produce a resonance frequency between 2300 MHz and 2700 MHz.

19. The antenna structure as claimed in claim 12, wherein the radiating portion divides the first slot into a first section and a second section; in, The length of the first section is not equal to the length of the second section.

20. The antenna structure of claim 19, wherein: The radiation portion couples and excites the first section to a resonance frequency between 5800 MHz and 6500 MHz; The radiation portion couples and excites the second segment to produce a resonance frequency between 7000 MHz and 7800 MHz.

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