TWI799262B - Three-feed-point-eight-band slim antenna for 5g mobile communication device - Google Patents

Abstract

Disclosed is a three-feed-point-eight-band slim antenna, comprising: an antenna base body, a first metal component, a second metal component and a third metal component. The first metal component, the second metal component and the third metal component arranged on the antenna base body have a special structure, so that the three-feed-point eight-band slim antenna of the present invention can transmit and receive the first frequency band to the eighth frequency band radio waves with an antenna efficiency higher than 50%, and is suitable for handheld communication devices such as smartphones.

Description

Three-feed point eight-band thin antenna for 5G mobile communication device

The present invention relates to an antenna applied to a 5G mobile communication device, in particular to a thin antenna with three feeding points and eight frequency bands.

With the rapid development of wireless communication technology, smart phones are widely used by the public. However, with the rapid development of wireless communication technology so far, it has evolved from the original 2G/3G/4G (WCDMA) to the existing 5G, and more than 60 different frequency bands have been distinguished for use in the world due to laws and regulations. Since the function of the smart phone device increases and must be portable, there is a demand for compactness and reduction in size. Antennas are used to transmit and receive wireless signals to achieve the functions of smart phone calls and data transmission. Since it is necessary to meet the purpose of using different frequency bands around the world, how to compress the multi-frequency radiation function of the antenna volume is a challenge for the industry. Topics discussed in depth.

In the prior art, a planar inverted-F antenna (planar inverted-F antenna) is widely used in the design of built-in antennas of communication products. The planar inverted-F antenna can be used in multi-band design. The performance of the inverted-F antenna designed in the same volume can be better than that of the monopole antenna, but its broadband efficiency and high gain are still limited. . Inverted-F antennas are usually designed to resonate out of two-band or three-band resonant operation. For the multi-band resonant design of four or more frequencies on the same antenna monomer, the effect still needs to be improved.

Therefore, the object of the present invention is to provide a thin antenna with three feeding points and eight frequency bands, which has good antenna efficiency in eight frequency bands.

The technical means adopted by the present invention to solve the problems of the prior art is to provide a thin antenna with three feeding points and eight frequency bands, comprising: an antenna substrate with a lower surface, a front surface, a right surface and an upper surface; a first A metal element, including a first ground terminal; a second metal element, including a signal feed-in end, a first section, a first radiation portion, a second section, a second radiation portion, a first Three radiating parts, a fourth radiating part, a third section and a fifth radiating part, the first section is arranged on the lower surface and extends rightward from the signal feed-in end, the first metal element and the The first section has a feed-in gap, the first radiation part is arranged on the front surface and connected to the first section and extends upward, the second section is arranged on the front surface and connected to the first section And extending upwards, the second section upwards is a lower section of the second section, a middle section of the second section and an upper section of the second section in sequence, the second radiating part is arranged on the front surface and connected to the second section The section is lower and extends to the left, the third radiating portion is arranged on the front surface and is connected to the middle section of the second section and extends to the right, the fourth radiating portion is arranged on the front surface and is connected to the second section The upper section extends to the left, the third section is arranged on the front surface and is connected to the upper section of the second section and extends to the right, the third section includes a third section extension, and the third section extends part extends downwards, the fifth radiating part is arranged on the front surface and is connected to the third section and extends downwards, the first radiating part is used for transmitting and receiving wireless signals of a first frequency band, the second radiating part The part is used for transmitting and receiving wireless signals in a second frequency band, the third radiating part is used for transmitting and receiving wireless signals in a third frequency band, and the fourth radiating part is used for transmitting and receiving wireless signals in a fourth frequency band, The fifth radiating part is used for transmitting and receiving wireless signals of a fifth frequency band and a sixth frequency band; and a third metal element, spaced apart from the first metal element and the second metal element, the third metal element includes A second ground terminal, a fourth section, a fifth section, a sixth section, a seventh section, and a sixth radiating portion, the fourth section is arranged on the lower surface and connected to the The second ground end extends to the left, the fifth section is arranged on the front surface and is connected to the fourth section and extends upward, the fifth section includes a fifth section extension, the fifth section The extension extends rightward, the sixth section is arranged on the upper surface and is connected to the fifth section and extends rightward, the seventh section is arranged on the right surface and is connected to the sixth section and extends downward Extending, the sixth radiating part is arranged on the front surface and is connected to the seventh section and extends to the left. The sixth radiating part is used for transmitting and receiving wireless signals of a seventh frequency band and an eighth frequency band.

In an embodiment of the present invention, a thin antenna with three feeding points and eight frequency bands is provided, and the frequency range of the first frequency band is 6.3 GHz to 7.1 GHz.

In an embodiment of the present invention, a thin antenna with three feeding points and eight frequency bands is provided, and the frequency range of the second frequency band is 5.6 GHz to 6.3 GHz.

In an embodiment of the present invention, a thin antenna with three feeding points and eight frequency bands is provided, and the frequency range of the third frequency band is 3.8 GHz to 4.6 GHz.

In an embodiment of the present invention, a thin antenna with three feeding points and eight frequency bands is provided, and the frequency range of the fourth frequency band is 3.1 GHz to 3.8 GHz.

In an embodiment of the present invention, a thin antenna with three feeding points and eight frequency bands is provided, and the frequency range of the fifth frequency band is 2.1 GHz to 2.7 GHz.

In one embodiment of the present invention, a thin antenna with three feeding points and eight frequency bands is provided, and the frequency range of the sixth frequency band is 1.7 GHz to 2.1 GHz.

In an embodiment of the present invention, a thin antenna with three feeding points and eight frequency bands is provided, and the frequency range of the seventh frequency band is 800 MHz to 950 MHz.

In an embodiment of the present invention, a thin antenna with three feeding points and eight frequency bands is provided, and the frequency range of the eighth frequency band is 600 MHz to 800 MHz.

The first metal element, the second metal element and the third metal element are arranged on the antenna base with the above-mentioned structure through the technical means adopted by the three-feed point eight-band thin antenna of the present invention. The first metal element, the second metal element and the third metal element can transmit and receive radio waves from the first frequency band to the eighth frequency band with an antenna efficiency higher than 50%, and are suitable for handheld communication devices such as smart phones.

Embodiments of the present invention will be described below based on FIGS. 1 to 4 . This description is not intended to limit the implementation of the present invention, but is one of the examples of the present invention.

As shown in Figures 1 to 3, a three-feed-point eight-band thin antenna 100 according to an embodiment of the present invention includes: an antenna base 1, a first metal element 2, and a second metal element 3 and a third metal element 4 .

The three-feed point eight-band thin antenna 100 is used in handheld communication devices such as smart phones. Specifically, the thin antenna 100 with three feeding points and eight frequency bands is a handheld communication device suitable for 5G communication standards. The antenna base 1 is roughly a rectangular plate for the second metal element 3 and the third metal element 4 to attach to. In this embodiment, the size of the antenna base 1 is 71 mm × 16 mm × 8 mm. Certainly, the present invention is not limited thereto. The antenna base 1 has a lower surface 11 , a front surface 12 , a right surface 13 and an upper surface 14 . Wherein, up, down, left, right, front, and back are only used to indicate relative directions, and the structure of the thin antenna 100 with three feeding points and eight frequency bands of the present invention can be rotated and mirrored arbitrarily. A chamfer is formed between the right surface 13 and the upper surface 14 . The antenna base 1 can be made of acrylonitrile-butadiene-styrene copolymer material or other insulating materials.

As shown in FIG. 1 , the first metal element 2 , the second metal element 3 and the third metal element 4 respectively correspond to a feeding point. And the first metal element 2 , the second metal element 3 and the third metal element 4 are spaced apart from each other and connected to a circuit board.

As shown in FIG. 2 and FIG. 3 , the first metal element 2 includes a first ground terminal 21 . The first ground terminal 21 is a feed point for feeding signals, and is connected to the mesh conductor of the coaxial cable.

As shown in Figure 2 and Figure 3, the second metal element 3 includes a signal feed-in end 31, a first segment 32, a first radiation portion 33, a second segment 34, and a second radiation portion 35 . A third radiation portion 36 , a fourth radiation portion 37 , a third section 38 and a fifth radiation portion 39 . The dotted line in Fig. 3 shows the bending position between the two planes.

The signal feed-in end 31 is a feed-in point for feeding in signals, and is used for connecting the central conductor of the coaxial cable. The signal feed-in terminal 31 is strip-shaped and located to the left of the first ground terminal 21 .

The first section 32 is strip-shaped, disposed on the lower surface 11 , and extends rightward from the signal feed-in end 31 . The first metal element 2 and the first section 32 have a feed gap, and the high-frequency signal fed from the first ground terminal 21 enters the first section 32 through the feed gap.

The first radiating portion 33 is strip-shaped, disposed on the front surface 12 and connected to the first section 32 to extend upward. The first radiation part 33 is used for transmitting and receiving wireless signals of a first frequency band F1. Specifically, the wireless signal of the first frequency band F1 passes through the signal feed-in terminal 31 and the first section 32 in sequence and radiates out from the first radiation part 33 . The frequency range of the first frequency band F1 is 6.3GHz to 7.1GHz.

The second section 34 is disposed on the front surface 12 and connected to the first section 32 to extend upward. The second section 34 includes a second section lower section 341 , a second section middle section 342 and a second section upper section 343 in sequence upward. Wherein, the upper section 343 of the second section is bifurcated and is V-shaped.

The second radiation portion 35 is stepped. It is disposed on the front surface 12 and connected to the lower section 341 of the second section to extend leftward. The second radiation part 35 is used for transmitting and receiving wireless signals of a second frequency band F2. Specifically, the wireless signal of the second frequency band F2 passes through the signal feed-in terminal 31 , the first segment 32 and the lower segment of the second segment 341 in sequence, and then radiates out from the second radiation part 35 . The frequency range of the second frequency band F2 is 5.6GHz to 6.3GHz.

The third radiating portion 36 is strip-shaped, disposed on the front surface 12 and connected to the middle section 342 of the second section to extend rightward. The third radiation part 36 is used for transmitting and receiving wireless signals of a third frequency band F3. Specifically, the wireless signal of the third frequency band F3 passes through the first ground terminal 21 , the first section 32 , the lower section 341 of the second section, and the middle section 342 of the second section in sequence, and radiates out from the third radiation part 36 . The frequency range of the third frequency band F3 is 3.8GHz to 4.6GHz.

The fourth radiating portion 37 is strip-shaped, disposed on the front surface 12 and connected to the upper section 343 of the second section to extend leftward. The fourth radiation part 37 is used for transmitting and receiving wireless signals of a fourth frequency band F4. Specifically, the wireless signal of the fourth frequency band F4 passes through the first ground terminal 21 , the first section 32 , the lower section 341 of the second section, and the middle section 342 of the second section in sequence, and radiates out from the fourth radiation part 37 . The frequency range of the fourth frequency band F4 is 3.1GHz to 3.8GHz.

The third section 38 is disposed on the front surface 12 and is connected to the upper section 343 of the second section and extends rightward. The third section 38 includes a third section extension 381 . The extension part 381 of the third section extends downwards to provide a longer path for the wireless signal to the fifth radiation part 39 .

The fifth radiating portion 39 is in the shape of a ㄣ, disposed on the front surface 12 and connected to the third section 38 to extend downward. The fifth radiation part 39 is used for transmitting and receiving wireless signals of a fifth frequency band F5 and a sixth frequency band F6. Specifically, the wireless signal of the fifth frequency band F5 passes through the signal feed-in terminal 31, the first segment 32, the lower segment 341 of the second segment, the middle segment 342 of the second segment, the upper segment 343 of the second segment, and the third segment in sequence. The segment 38 (excluding the extension portion 381 of the third segment) radiates out from the fifth radiation portion 39 . The frequency range of the fifth frequency band F5 is 2.1GHz to 2.7GHz. The wireless signal of the sixth frequency band F6 passes through the signal feed-in terminal 31, the first segment 32, the lower segment 341 of the second segment, the middle segment 342 of the second segment, the upper segment 343 of the second segment, and the third segment 38 and The third section extends the portion 381 to radiate out from the fifth radiation portion 39 . The frequency range of the sixth frequency band F6 is 1.7GHz to 2.1GHz.

As shown in Figure 2 and Figure 3, the third metal element 4 includes a second ground terminal 41, a fourth section 42, a fifth section 43, a sixth section 44, a The seventh section 45 and a sixth radiation portion 46 .

The second ground terminal 41 is a feed-in point for feeding in signals. The second ground terminal 41 is strip-shaped and located on the left of the signal feed-in terminal 31 .

The fourth section 42 is ㄣ-shaped, disposed on the lower surface 11 and extending leftward from the second ground end 41 .

The fifth section 43 is disposed on the front surface 12 and connected to the fourth section 42 to extend upward. The fifth section 43 includes a fifth section extension 431 . The extension part 431 of the fifth section extends to the right to provide a longer path for the wireless signal to the sixth radiation part 46 .

The sixth section 44 is strip-shaped, disposed on the upper surface 14 and connected to the fifth section 43 to extend rightward.

The seventh section 45 is strip-shaped, disposed on the right surface 13 and connected to the sixth section 44 to extend downward.

The sixth radiating portion 46 is strip-shaped, disposed on the front surface 12 and connected to the seventh section 45 to extend leftward. The sixth radiation part 46 is used for transmitting and receiving wireless signals of a seventh frequency band F7 and an eighth frequency band F8. Specifically, the wireless signal of the seventh frequency band F7 passes through the second ground terminal 41, a fourth section 42, a fifth section 43 (excluding the extension part 431 of the fifth section), and a sixth section in sequence. A segment 44 and a seventh segment 45 radiate out at the sixth radiating portion 46 . The frequency range of the seventh frequency band F7 is 800MHz to 950MHz. The wireless signal of the eighth frequency band F8 passes through the second ground terminal 41, the fourth segment 42, the fifth segment 43 and the fifth segment extension 431), the sixth segment 44, and the seventh segment 45 in sequence. It radiates out from the sixth radiation portion 46 . The frequency range of the eighth frequency band F8 is 600MHz to 800MHz.

FIG. 4 is a graph showing the relationship between antenna efficiency and frequency. The antenna efficiencies in the frequency ranges of the aforementioned eight frequency bands are all greater than 50%, and the antenna efficiency is good in the predetermined frequency range. The efficiency of the antenna outside the frequency range of the aforementioned eight frequency bands is generally less than 50%, so as to suppress the interference of signals outside the predetermined frequency range.

The above descriptions and descriptions are only descriptions of the preferred embodiments of the present invention. Those who have common knowledge of this technology may make other modifications according to the scope of the patent application defined below and the above descriptions, but these modifications should still be It is for the inventive spirit of the present invention and within the scope of rights of the present invention.

100: Three-feed point eight-band thin antenna 1: Antenna base 11: Lower surface 12: Front surface 13: Right surface 14: Upper surface 2: The first metal element 21: The first ground terminal 3: Second metal element 31: Signal feed-in terminal 32: The first section 33: The first radiation department 34:Second section 341: The lower section of the second section 342: Middle section of the second section 343: The upper section of the second section 35: Second radiation department 36: The third radiation department 37: The Fourth Radiation Department 38: The third section 381: The extension of the third section 39: The Fifth Radiant Division 4: The third metal element 41: The second ground terminal 42: The fourth segment 43: Fifth segment 431: The extension of the fifth section 44: Section 6 45: Seventh section 46: Sixth Radiation Division F1: the first frequency band F2: second frequency band F3: the third frequency band F4: Fourth frequency band F5: fifth frequency band F6: the sixth frequency band F7: seventh frequency band F8: Eighth frequency band

[Fig. 1] is a three-dimensional schematic diagram showing an eight-band thin antenna with three feeding points according to an embodiment of the present invention; [Fig. 2] is an exploded schematic diagram showing an eight-band thin antenna with three feeding points according to an embodiment of the present invention; [Fig. 3] is a schematic diagram of an expanded thin antenna with three feed points and eight frequency bands according to an embodiment of the present invention; [FIG. 4] is a graph showing the relationship between antenna efficiency and frequency of a three-feed point eight-band thin antenna according to an embodiment of the present invention.

100: Three-feed point eight-band thin antenna

1: Antenna base

2: The first metal element

3: Second metal element

Claims (9)

A thin antenna with three feeding points and eight frequency bands, comprising: an antenna substrate having a lower surface, a front surface, a right surface and an upper surface; a first metal element including a first grounding terminal; a second metal element , including a signal feed-in terminal, a first section, a first radiation section, a second section, a second radiation section, a third radiation section, a fourth radiation section, a third section and A fifth radiating part, the first section is arranged on the lower surface and extends rightward from the signal feed-in end, the first metal element and the first section have a feed-in gap, the first radiating part is set On the front surface and connected to the first section to extend upwards, the second section is arranged on the front surface and connected to the first section to extend upwards, the second section upwards in sequence is a second The lower section of the section, the middle section of a second section, and the upper section of a second section, the second radiating part is arranged on the front surface and connected to the lower section of the second section and extends leftward, the third radiating part is arranged on the The front surface is connected to the middle section of the second section and extends to the right, the fourth radiation part is arranged on the front surface and connected to the upper section of the second section and extends to the left, the third section is arranged on the front surface And connected to the upper part of the second section and extending to the right, the third section includes a third section extension part, the third section extension part extends downward, the fifth radiation part is arranged on the front surface and Connected to the third section and extending downward, the first radiating part is used for transmitting and receiving wireless signals in a first frequency band, the second radiating part is used for transmitting and receiving wireless signals in a second frequency band, and the first radiating part is used for transmitting and receiving wireless signals in a second frequency band. The third radiation part is used for transmitting and receiving wireless signals of a third frequency band, the fourth radiation part is used for transmitting and receiving of wireless signals of a fourth frequency band, and the fifth radiation part is used for a fifth frequency band and a sixth frequency band. The transmission and reception of wireless signals in the frequency band; and a third metal element, spaced apart from the first metal element and the second metal element, the third metal element includes a second ground terminal, a fourth section, a fifth section, a sixth section, a seventh section, and a sixth radiating portion, the fourth section is set on the lower surface and is connected to the second ground terminal and extends leftward, the fifth section is set On the front surface and connected to the fourth section to extend upward, the fifth section includes a fifth section extension, the fifth section extension extends to the right, and the sixth section is arranged on The upper surface is connected to the fifth section and extends rightward, the seventh section is arranged on the right surface and is connected to the sixth section and extends downward, the sixth radiating portion is arranged on the front surface and Connected to the seventh section and extending to the left, the sixth radiation part is used for transmitting and receiving wireless signals of a seventh frequency band and an eighth frequency band. According to claim 1-3, the eight-band thin antenna is fed into the point, wherein the frequency range of the first frequency band is 6.3GHz to 7.1GHz. As in claim 1-3, the eight-band thin antenna is fed into the point, wherein the frequency range of the second frequency band is 5.6GHz to 6.3GHz. As in claim 1-3, the eight-band thin antenna is fed into the point, wherein the frequency range of the third frequency band is 3.8GHz to 4.6GHz. As in claim 1-3, the eight-band thin antenna is fed into the point, wherein the frequency range of the fourth frequency band is 3.1GHz to 3.8GHz. As in claim 1-3, the eight-band thin antenna is fed into the point, wherein the frequency range of the fifth frequency band is 2.1GHz to 2.7GHz. As in claim 1-3, the eight-band thin antenna is fed into the point, wherein the frequency range of the sixth frequency band is 1.7GHz to 2.1GHz. As in claim 1-3, the eight-band thin antenna is fed into the point, wherein the frequency range of the seventh frequency band is 800MHz to 950MHz. As in claim 1-3, the eighth frequency band thin antenna is fed into the point, wherein the frequency range of the eighth frequency band is 600MHz to 800MHz.

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