Tablet computer capable of improving index of radio frequency antenna

Abstract

The utility model provides a tablet personal computer capable of improving radio frequency antenna indexes, which relates to the technical field of tablet personal computer radio frequency antennas and comprises a tablet shell structure, a cavity antenna structure is fixedly connected inside the tablet shell structure, and the tablet shell structure comprises a tablet personal computer shell. The tablet personal computer comprises a tablet personal computer shell, an FPC antenna is attached to the surface of a plastic antenna cavity, a cavity antenna is embedded into a cavity groove of the tablet personal computer, a tablet personal computer main board is fixedly connected to one side of the tablet personal computer shell, and a main feed point contact area and auxiliary conductive cotton are arranged in the middle of the tablet personal computer shell. The WIFI and GPS radio frequency antenna OTA index is improved through the feed structure cavity antenna, and compared with a traditional antenna, TRP and TIS in the OTA index are obviously improved, so that external interference is reduced, and the signal receiving and sending quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of radio frequency antennas for tablet computers, and in particular to a tablet computer with improved radio frequency antenna indicators. Background Art

[0002] With consumers' demand for aesthetics in tablet computers, high-end tablet computers basically use integrated seamless metal shells. The use of full metal shells will reduce the signal transmission efficiency, reception range and anti-interference ability of the tablet computer's WIFI radio frequency antenna, which will directly affect the indicators of the WIFI and GPS radio frequency antennas.

[0003] Currently, the antennas used in tablet computers are basically traditional antennas, namely FPC antenna + coaxial cable connected to the motherboard, FPC + PCB small board adapter + coaxial cable connected to the motherboard, or FPC directly in contact with the motherboard spring clip. For all-metal shell tablets using traditional antennas, the antenna OTA (Over-The-Air) indicators will be relatively low. OTA includes TRP (antenna radiated power) and TIS (antenna received signal sensitivity).

[0004] To improve the signal transmission efficiency, reception range, and anti-interference capabilities of Wi-Fi or GPS RF antennas, as well as enhance their OTA performance, innovative cavity antenna technology can effectively enhance the performance of Wi-Fi and GPS RF antennas without sacrificing device aesthetics and portability. This design typically involves embedding the antenna into a specific cavity or structure within the device, allowing it to operate in a relatively closed and controlled environment, reducing external interference and improving the quality of signal reception and transmission. Utility Model Content

[0005] In order to solve the above problems, the present invention proposes a tablet computer with improved radio frequency antenna indicators, so as to more accurately solve the above-mentioned problem that the antennas currently used in tablet computers basically use traditional antennas, that is, FPC antenna + coaxial cable connected to the motherboard, FPC + PCB small board adapter + coaxial cable connected to the motherboard, or FPC directly in contact with the motherboard spring clip. For traditional antennas used in all-metal casings, the antenna OTA indicators will be low.

[0006] The utility model is achieved through the following technical solutions:

[0007] The utility model proposes a tablet computer with improved radio frequency antenna indicators, comprising a tablet housing structure, wherein a cavity antenna structure is fixedly connected to the interior of the tablet housing structure, the tablet housing structure comprising a tablet housing, one side of the tablet housing being fixedly connected to a tablet mainboard, a main feed point contact area and secondary conductive cotton being provided in the middle of the tablet housing, a coaxial line being fixedly connected to the top surface of the tablet mainboard, a cavity antenna body being fixedly connected to the end of the coaxial line, a main FPC antenna and a secondary FPC antenna being respectively adhered to both sides of the bottom surface of the cavity antenna body, main conductive cotton being provided on the bottom surface of the main FPC antenna, secondary conductive cotton being provided on the bottom surface of the secondary FPC antenna, and a main feed point contact area and a secondary feed point contact area being provided on the top surface of the tablet housing covered by the secondary FPC antenna.

[0008] Furthermore, a main fixing plate and a secondary fixing plate are fixedly connected to both sides of the cavity antenna body.

[0009] Furthermore, screws are passed through the middle of the main fixing plate and the auxiliary fixing plate and are fixedly connected to the tablet computer housing.

[0010] Furthermore, a main limiting plate and a secondary limiting plate are respectively fixed to the bottom surfaces of both ends of the cavity antenna body.

[0011] Furthermore, the main conductive cotton and the secondary conductive cotton are respectively located inside the main limiting plate and the secondary limiting plate, and the main limiting plate and the secondary limiting plate are L-shaped.

[0012] Furthermore, the main feeding point contact area and the auxiliary feeding point contact area are respectively located on the bottom surfaces of the main conductive cotton and the auxiliary conductive cotton.

[0013] Furthermore, the main conductive cotton and the secondary conductive cotton are both rectangular structures.

[0014] Furthermore, the tablet housing structure is an integrated metal structure, and the tablet mainboard and the cavity antenna body are installed inside the tablet housing.

[0015] Furthermore, the bottom surfaces of the main conductive cotton and the secondary conductive cotton are in contact with the top surfaces of the main feeding point contact area and the secondary feeding point contact area respectively, and the main FPC antenna and the secondary FPC antenna are in contact and connected with the main conductive cotton and the secondary conductive cotton respectively.

[0016] Furthermore, the cavity antenna structure is a rectangular structure.

[0017] Beneficial effects of the utility model:

[0018] 1. This utility model proposes a tablet computer with improved RF antenna indicators. An FPC antenna is attached to the surface of a plastic antenna cavity. The cavity antenna is embedded in the tablet computer cavity slot. The coaxial cable is connected to the tablet computer motherboard. The feeding structure cavity antenna is used to improve the OTA indicators of the Wi-Fi and GPS RF antennas. Compared with traditional antennas, the TRP and TIS in the OTA indicators are significantly improved, thereby reducing external interference and improving the quality of signal reception and transmission.

[0019] 2. The present invention proposes a tablet computer with improved radio frequency antenna indicators. Through the feeding method of the cavity antenna structure, the antenna feeding point is connected to the metal shell with conductive cotton, and the bottom plate of the metal shell is used as the antenna reflection surface to introduce or lead the radio frequency signal into or out of the cavity antenna. This not only improves the transmission efficiency of WIFI and GPS signals, but also the tablet computer can significantly improve the wireless communication capability of the device without affecting the product appearance design, providing users with a better user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the overall explosion structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the cavity antenna structure of the present utility model.

[0023] The accompanying drawings are numbered as follows: 1. Tablet computer shell structure; 101. Tablet computer shell; 102. Tablet computer mainboard; 103. Coaxial cable; 2. Cavity antenna structure; 201. Cavity antenna main body; 202. Main fixing plate; 203. Auxiliary fixing plate; 204. Main conductive cotton; 205. Main feeding point contact area; 206. Main FPC antenna; 207. Main limiting plate; 208. Auxiliary feeding point contact area; 209. Auxiliary conductive cotton; 210. Auxiliary FPC antenna; 211. Auxiliary limiting plate. DETAILED DESCRIPTION

[0024] In order to more clearly and completely illustrate the technical solution of the present invention, the present invention will be further described below with reference to the accompanying drawings.

[0025] Please refer to Figure 1-Figure 3The present invention proposes a tablet computer with improved radio frequency antenna indicators, including a tablet shell structure 1, a cavity antenna structure 2 is fixedly connected to the interior of the tablet shell structure 1, and the cavity antenna structure 2 is a rectangular structure. The tablet shell structure 1 includes a tablet shell 101, and a tablet motherboard 102 is fixedly connected to one side of the tablet shell 101. The tablet shell 101 is an integrated seamless metal structure, which will affect the transmission of signals. A main feed point contact area 205 and a secondary feed point contact area 208 are provided in the middle of the tablet shell 101. The contact area connects the cavity antenna body 201 and the tablet shell 101, which is beneficial to signal transmission. In order to transmit the signal, the top surface of the tablet computer motherboard 102 is fixedly connected with the coaxial line 103, the end of the coaxial line 103 is fixedly connected with the cavity antenna body 201, the FPC antenna is pasted on the bottom surface of the cavity antenna body 201, the bottom surface of the main FPC antenna 206 is provided with the main conductive cotton 204, and the bottom surface of the auxiliary FPC antenna 210 is provided with the auxiliary conductive cotton 209. The main conductive cotton 204 and the auxiliary conductive cotton 209 are both rectangular structures. The conductive cotton is in the middle of the FPR antenna and the contact area to connect the two. The top surface of the tablet computer housing 101 covered by the auxiliary FPC antenna 210 is provided with the main feeding point contact area 205 and the auxiliary feeding point contact area 208.

[0026] A fixing frame is provided inside the tablet computer housing 101 , and the cavity antenna body 201 is installed inside the tablet computer housing 101 through a fixing plate. A main fixing plate 202 and a secondary fixing plate 203 are fixedly connected to both sides of the cavity antenna body 201 .

[0027] The middle parts of the main fixing plate 202 and the auxiliary fixing plate 203 are connected with screws and are fixedly connected to the tablet computer housing 101. The bottom surfaces of the two ends of the cavity antenna body 201 are respectively fixed with a main limiting plate 207 and an auxiliary limiting plate 211. The setting of the limiting plate can fix the conductive cotton. When the cavity antenna body 201 is installed, the cavity antenna body 201 and the structure in the middle of the tablet computer housing 101 are accurately contacted.

[0028] The conductive cotton is located at the bottom of the cavity antenna body 201, connecting the cavity antenna body 201 and the tablet computer housing 101. The main conductive cotton 204 and the secondary conductive cotton 209 are respectively located inside the main limiting plate 207 and the secondary limiting plate 211. The main limiting plate 207 and the secondary limiting plate 211 are L-shaped. The main feeding point contact area 205 and the secondary feeding point contact area 208 are respectively located on the bottom surfaces of the main conductive cotton 204 and the secondary conductive cotton 209.

[0029] The tablet housing structure 1 is an integrated metal structure. The tablet motherboard 102 and the cavity antenna body 201 are installed inside the tablet housing 101. The bottom surfaces of the main conductive cotton 204 and the secondary conductive cotton 209 are in contact with the top surfaces of the main feeding point contact area 205 and the secondary feeding point contact area 208 respectively. The main FPC antenna 206 and the secondary FPC antenna 210 are in contact and connected with the main conductive cotton 204 and the secondary conductive cotton 209 respectively.

[0030] In this embodiment, the tablet computer motherboard 102 and the cavity antenna body 201 are installed inside the tablet computer housing 101, and the cavity antenna body 201 and the tablet computer motherboard 102 are connected through the coaxial line 103. A main feed point contact area 205 and a secondary feed point contact area 208 are provided on the inner surface of the tablet computer housing 101. A main FPC antenna 206 and a secondary FPC antenna 210 are provided on the bottom surface of the cavity antenna body 201. A main conductive cotton 204 and a secondary conductive cotton 209 are installed on their bottom surfaces. Finally, the cavity antenna structure 2 is installed inside the tablet computer housing 101 by screws, and the antenna feed point is connected to the tablet computer housing 101 with conductive cotton. The bottom plate of the tablet computer housing 101 serves as the antenna reflector to introduce or lead out the RF signal into or out of the cavity antenna. The feed structure cavity antenna can improve the OTA indicators of WIFI and GPS RF antennas. Compared with traditional antennas, the TRP and TIS in the OTA indicators are significantly improved, thereby reducing external interference and improving the quality of signal reception and transmission.

[0031] The OTA indicators of the feed point structure cavity antenna are shown in the following table:

[0032] WIFIOTA indicators:

[0033]

[0034] GPS test indicators:

[0035]

[0036]

[0037] Of course, the present invention may have many other implementations. Based on this implementation, other implementations obtained by ordinary technicians in this field without any creative work are all within the scope of protection of the present invention.

Claims

1. A tablet computer with improved radio frequency antenna performance, comprising a tablet housing structure, characterized in that: A cavity antenna structure is fixedly connected to the interior of the flat shell structure, and the flat shell structure includes a tablet computer shell, a tablet computer mainboard is fixedly connected to one side of the tablet computer shell, a main feed point contact area and a secondary conductive cotton are provided in the middle of the tablet computer shell, a coaxial line is fixedly connected to the top surface of the tablet computer mainboard, and a cavity antenna body is fixedly connected to the end of the coaxial line, a main FPC antenna and a secondary FPC antenna are respectively pasted on both sides of the bottom surface of the cavity antenna body, the bottom surface of the main FPC antenna is provided with main conductive cotton, and the bottom surface of the secondary FPC antenna is provided with secondary conductive cotton, and the top surface of the tablet computer shell covered by the secondary FPC antenna is provided with a main feed point contact area and a secondary feed point contact area.

2. The tablet computer with improved radio frequency antenna performance according to claim 1, characterized in that: A main fixing plate and a secondary fixing plate are fixedly connected to both sides of the cavity antenna body.

3. The tablet computer with improved radio frequency antenna performance according to claim 2, characterized in that: The middle parts of the main fixing plate and the auxiliary fixing plate are penetrated by screws and are fixedly connected to the tablet computer housing.

4. The tablet computer with improved radio frequency antenna performance according to claim 1, characterized in that: A main limiting plate and a secondary limiting plate are respectively fixed to the bottom surfaces of both ends of the cavity antenna body.

5. The tablet computer with improved radio frequency antenna performance according to claim 4, characterized in that: The main conductive cotton and the auxiliary conductive cotton are respectively located inside the main limiting plate and the auxiliary limiting plate, and the main limiting plate and the auxiliary limiting plate are L-shaped.

6. The tablet computer with improved radio frequency antenna performance according to claim 1, characterized in that: The main feeding point contact area and the auxiliary feeding point contact area are respectively located on the bottom surfaces of the main conductive cotton and the auxiliary conductive cotton.

7. The tablet computer with improved radio frequency antenna performance according to claim 1, characterized in that: The main conductive cotton and the secondary conductive cotton both have a rectangular structure.

8. The tablet computer with improved radio frequency antenna performance according to claim 1, characterized in that: The tablet shell structure is an integrated metal structure, and the tablet mainboard and the cavity antenna body are installed inside the tablet shell.

9. The tablet computer with improved radio frequency antenna performance according to claim 1, characterized in that: The bottom surfaces of the main conductive cotton and the auxiliary conductive cotton are in contact with the top surfaces of the main feeding point contact area and the auxiliary feeding point contact area respectively, and the main FPC antenna and the auxiliary FPC antenna are in contact and connected with the main conductive cotton and the auxiliary conductive cotton respectively.

10. The tablet computer with improved radio frequency antenna performance according to claim 1, characterized in that: The cavity antenna structure is a rectangular structure.

Images