TWI744102B - Antenna structure and electronic device - Google Patents

Abstract

An antenna structure includes an antenna radiator, a microstrip line, a flexible board, and a coaxial cable. The antenna radiator is used to receive and transmit wireless signals. The wireless signals include radio frequency signals. The microstrip line is coupled to the antenna radiator and is used to transmit the radio frequency signals. The flexible board is coupled to the microstrip line and is used to transmit the radio frequency signals. The coaxial cable is coupled to the flexible board and is used to transmit the radio frequency signals to a processor.

Description

Antenna structure and electronic device

This case relates to an antenna structure and an electronic device, in detail, an antenna structure and an electronic device having the aforementioned antenna structure.

The current technology uses a traditional coaxial cable as the connector between the antenna and the module end, but this design method will compress the antenna design space on the notebook side and cannot pass the line behind the panel. It should be noted that the existing electronic products Space is limited. If the coaxial cable runs behind the panel, it will cause problems such as water ripples or fragments on the panel. Furthermore, the cable must be routed along the panel to the notebook motherboard, causing high-frequency signals to decrease as the cable length increases.

Therefore, the above-mentioned technology still has many shortcomings, and other suitable antenna structures need to be developed by practitioners in the field.

One aspect of this case involves an antenna structure. The antenna structure includes antenna radiator, microstrip line, soft board and coaxial cable. The antenna radiator is used to receive or transmit wireless signals. Wireless signals include radio frequency signals. The microstrip line is coupled to the antenna radiator and used to transmit radio frequency signals. The soft board is coupled to the microstrip line and used to transmit radio frequency signals. The coaxial cable is coupled to the soft board and used to transmit radio frequency signals to the processor.

Another aspect of this case involves an electronic device. The electronic device includes a panel. The panel includes a display area, a peripheral area and the above-mentioned antenna structure. The peripheral area is located outside the display area. The above-mentioned antenna structure is arranged in the peripheral area. The flexible board of the antenna structure can extend to the display area and be coupled to the coaxial cable of the panel in the peripheral area.

The following will clearly illustrate the spirit of this case with diagrams and detailed descriptions. Anyone with ordinary knowledge in the technical field who understands the embodiments of this case can change and modify the technology taught in this case without departing from the scope of this case. Spirit and scope.

The terms used herein are only to describe specific embodiments, and are not intended to limit the present application. Singular forms such as "a", "this", "this", "本" and "this", as used herein, also include plural forms.

Regarding the "include", "include", "have", "contain", etc. used in this article, they are all open terms, which means including but not limited to.

Regarding the terms used in this article, unless otherwise specified, each term usually has the usual meaning when used in this field, in the content of the case, and in the special content. Some terms used to describe the case will be discussed below or elsewhere in this specification to provide those skilled in the art with additional guidance on the description of the case.

Fig. 1 is a diagram of an antenna structure drawn according to some embodiments of the present case. In some embodiments, as shown in FIG. 1, the antenna structure 100 includes an antenna radiator 110, a microstrip line 120, a flexible board 130 and a coaxial cable 140.

In some embodiments, referring to Figure 1, the antenna radiator 110 is used to receive or transmit wireless signals. Wireless signals include radio frequency signals. The microstrip line 120 is coupled to the antenna radiator 110 and is used to transmit radio frequency signals. The soft board 130 is coupled to the microstrip line 120 and used to transmit radio frequency signals. The coaxial cable 140 is coupled to the soft board 130 and is used to transmit radio frequency signals to a processor (not shown in the figure), and the processor performs signal processing on the radio frequency signals.

In some embodiments, the antenna radiator 110 includes one of an L-shaped antenna, an inverted F-shaped antenna, a monopole antenna, and a coupled antenna. In some embodiments, the antenna radiator 110 includes one of 4G and 5G antennas.

In some embodiments, the microstrip line 120 includes a coplanar waveguide (CPW). The feed impedance of the microstrip line 120 is 50 ohms. The microstrip line 120 includes a center line 121 and two ground planes 122 and 123. It should be noted that this case is not limited to the above-mentioned embodiment, and the feed impedance of the microstrip line 120 can be designed according to actual requirements.

In some embodiments, the flexible board 130 includes liquid crystal polymer (Liquid Crystalline Polyester, LCP). It should be noted that the LCP material can maintain a constant dielectric constant in the high frequency range. In addition, the dielectric loss value of LCP material is very small, even in the high frequency range of 110GHz, the difference between the dielectric loss value of the high frequency band and the dielectric loss value of the ordinary wave band is very small, which is suitable for the application of the millimeter wave band. Furthermore, the thermal expansion of LCP materials is very small. Therefore, LCP is suitable as a packaging material for high-frequency technology.

In some embodiments, referring to FIG. 1, the antenna radiator 110 and the microstrip line 120 are formed by a conductive layer of a printed circuit board (PCB). It should be noted that the antenna radiator 110, the microstrip line 120, and the printed circuit board are integrally formed, and it is easy to connect in series and parallel with the circuit elements, which saves the cost of the manufacturing process and enables multiple choices in the circuit layout.

In some embodiments, the antenna radiator 110 includes a vertical portion 111, a horizontal portion 112 and a ground portion 113. The vertical portion 111 is coupled to the microstrip line 120 at the feeding end, the two ground planes 121 and 122 are symmetrically arranged on both sides of the center line 121, and the ground portion 113 is coupled to one of the two ground planes 122 and 123.

In some embodiments, the thickness of the soft board 130 is approximately 0.35 times the thickness of the coaxial cable 140. It should be noted that this case is not limited to the above-mentioned embodiment, and the ratio of the thickness of the flexible board 130 to the coaxial cable 140 can be designed according to actual requirements.

FIG. 2 is a diagram of an electronic device with an antenna structure according to some embodiments of the present application. In some embodiments, as shown in FIG. 2, the electronic device 200 includes a panel 210 and at least one antenna structure 100 as shown in FIG. 1. In some embodiments, the panel 210 includes four antenna structures 100. The positions of the four antenna structures 100 can be located anywhere in the peripheral area P, and are not limited to those shown in FIG. 2. In some embodiments, the number of antenna structures 100 is not limited to that shown in FIG. 2. In some embodiments, the electronic device 200 may be a notebook computer or a tablet.

In some embodiments, referring to FIG. 2, the panel 210 includes a display area D, a peripheral area P, and at least the antenna structure 100 as shown in FIG. 1. The peripheral area P is located outside the display area D. At least one antenna structure 100 as shown in FIG. 1 is disposed in the peripheral area P. The soft board 130 of the antenna structure 100 can extend to the display area D, and is coupled to the coaxial cable 211 in the panel 210 in the peripheral area P.

For example, the soft board 130 of the antenna structure 100 can be connected to the coaxial cable 211 along the path R2 in the display area D to the peripheral area P. In addition, the cable along the path R1 includes a combination of the soft board 130 and the coaxial cable 140. The cable along the path R2 only contains the soft board 130. Compared with the cable along the path R1, the cable along the path R2 has a slightly shorter path length, and the space height of the cable is also reduced by 65%. It should be noted that if the path length is in the XY plane, the spatial height here means the Z axis. In some embodiments, the path shape of the cable along the path R2 is not limited to a straight line.

Furthermore, the soft board 130 of the antenna structure 100 can traverse the display area D along the path R2. In addition to preventing the panel 210 from generating water ripples or fragments, the length of the path R2 is shorter than the length of the path R1, so that The radio frequency signal reduces the loss during transmission as the distance decreases.

According to the embodiment of the present application, the present application provides an antenna structure and an electronic device having the foregoing antenna structure, so as to improve the design space of the antenna structure and reduce the cable length to maintain the high-frequency performance of the antenna.

Although this case is disclosed as above with detailed embodiments, this case does not exclude other feasible implementation aspects. Therefore, the scope of protection of this case shall be determined by the scope of the attached patent application, and shall not be restricted by the foregoing embodiments.

For those skilled in the art, without departing from the spirit and scope of the case, various changes and modifications can be made to the case. Based on the foregoing embodiment, all changes and modifications made to this case are also covered by the scope of protection of this case.

100: Antenna structure

110: Antenna radiator

111: Vertical

112: Horizontal part

113: Grounding part

120: Microstrip line

121: Central Line

122~123: ground plane

130: soft board

140: Coaxial cable

200: electronic device

210: Panel

211: Panel coaxial cable

D: Display area

P: Surrounding area

R1~R2: path

With reference to the implementation in the subsequent paragraphs and the following diagrams, you can better understand the content of this case: Figure 1 is an antenna structure diagram drawn according to some embodiments of the present case; and FIG. 2 is a diagram of an electronic device with an antenna structure according to some embodiments of the present application.

Domestic deposit information (please note in the order of deposit institution, date and number) without Foreign hosting information (please note in the order of hosting country, institution, date, and number) without

100: Antenna structure

110: Antenna radiator

111: Vertical

112: Horizontal part

113: Grounding part

120: Microstrip line

121: Central Line

122~123: ground plane

130: soft board

140: Coaxial cable

Claims (8)

An antenna structure includes: an antenna radiator for receiving or transmitting a wireless signal, wherein the wireless signal includes a radio frequency signal; a microstrip line coupled to the antenna radiator and used for transmitting the radio frequency signal; A board coupled to the microstrip line and used to transmit the radio frequency signal, wherein the flexible board includes liquid crystal polymer, wherein the thickness of the flexible board is about 0.35 times the thickness of the coaxial cable; and a coaxial cable, coupled Connect the soft board and use it to transmit the radio frequency signal to a processor. The antenna structure according to claim 1, wherein the microstrip line includes a coplanar waveguide. The antenna structure according to claim 2, wherein the impedance of the microstrip line includes 50 ohms. The antenna structure according to claim 3, wherein the antenna radiator and the microstrip line are composed of a conductive layer of a printed circuit board. The antenna structure of claim 1, wherein the antenna radiator includes a vertical portion, a horizontal portion, and a ground portion, wherein the microstrip line includes a center line and two ground planes, and the vertical portion is coupled to the feed end Connect the microstrip line, the two ground planes are symmetrically arranged on both sides of the center line with the center line, The ground portion is coupled to one of the two ground planes. The antenna structure according to claim 1, wherein the antenna radiator includes one of 4G and 5G antennas. The antenna structure according to claim 1, wherein the antenna radiator includes one of an L-shaped antenna, an inverted F-shaped antenna, a monopole antenna, and a coupled antenna. An electronic device comprising: a panel, comprising: a display area; a peripheral area located outside the display area; and at least one antenna structure as in claim 1 arranged in the peripheral area, wherein the soft antenna structure of the antenna structure The board traverses the display area and is coupled to a coaxial cable of the panel.

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