Terminal device

Abstract

The utility model provides terminal equipment, and belongs to the technical field of electronics. The terminal device comprises a device body, a rear camera decoration assembly, a satellite communication radio frequency circuit and a grounding circuit. The rear camera decoration assembly is located on the back of the device body. The rear camera decoration assembly comprises at least one metal ring, and each metal ring is provided with a slotting structure. The satellite communication radio frequency circuit and the grounding circuit are electrically connected to the at least one metal ring respectively, working current is formed on at least part of the metal ring connected between the satellite communication radio frequency circuit and the grounding circuit, and circularly polarized electromagnetic waves are generated. According to the terminal equipment, the satellite communication radio frequency circuit and the grounding circuit are respectively and electrically connected with the metal ring with the slotting structure in the rear camera decoration assembly, the circular structure of the metal ring is utilized to excite and generate circularly polarized electromagnetic waves, and the satellite communication performance of the terminal equipment is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic technical field, especially relate to a terminal equipment. BACKGROUND

[0002] In the related art, satellite communication antennas are basically designed on the frame of electronic devices, and the transmitting state and the receiving state are switched by loading a switch.

[0003] However, such satellite communication antennas often affect the performance of surrounding antennas, and the frame form cannot realize true circularly polarized waves. SUMMARY

[0004] The utility model provides a terminal equipment can solve the problem that satellite communication antenna affects the performance of surrounding antennas and cannot realize true circular polarization.

[0005] The technical solution is as follows:

[0006] A terminal equipment, the terminal equipment includes: device body, rear camera decoration component, satellite communication radio frequency circuit and ground circuit,

[0007] The rear camera decoration component is located on the back of the device body,

[0008] The rear camera decoration component includes at least one metal ring, each metal ring is respectively provided with a slot structure, the satellite communication radio frequency circuit and the ground circuit are respectively electrically connected to the at least one metal ring, and at least part of the metal ring between the satellite communication radio frequency circuit and the ground circuit forms working current, and circularly polarized electromagnetic wave is generated.

[0009] In some embodiments, each metal ring is respectively provided with a feed connection point and a ground connection point, the feed connection point is used for electrically connecting the satellite communication radio frequency circuit, and the ground connection point is used for electrically connecting the ground circuit,

[0010] The arc length between the feed connection point and the ground connection point corresponds to a central angle greater than or equal to 90 degrees.

[0011] In some embodiments, the feed connection point is arranged close to the slot structure.

[0012] In some embodiments, the circularly polarized electromagnetic wave includes at least one of left-handed circularly polarized electromagnetic wave and right-handed circularly polarized electromagnetic wave.

[0013] In some embodiments, the number of metal rings is at least two, at least two metal rings are different in diameter and concentrically arranged.

[0014] At least one of the metal rings is used to generate a left-handed circularly polarized electromagnetic wave, and at least one of the metal rings is used to generate a right-handed circularly polarized electromagnetic wave.

[0015] In some embodiments, on the metal ring used to generate a left-handed circularly polarized electromagnetic wave, the slotted structure, the feed connection point and the ground connection point are sequentially arranged along a first direction; and on the metal ring used to generate a right-handed circularly polarized electromagnetic wave, the slotted structure, the feed connection point and the ground connection point are sequentially arranged along a second direction.

[0016] The first direction and the second direction are opposite directions.

[0017] In some embodiments, the metal ring includes a first metal ring and a second metal ring, and a diameter of the first metal ring is greater than a diameter of the second metal ring.

[0018] The first metal ring is used to generate a left-handed circularly polarized electromagnetic wave, and the second metal ring is used to generate a right-handed circularly polarized electromagnetic wave.

[0019] In some embodiments, the satellite communication radio frequency circuit includes a transmitting circuit and a receiving circuit, the transmitting circuit is electrically connected to the metal ring used to generate a left-handed circularly polarized electromagnetic wave, and the receiving circuit is electrically connected to the metal ring used to generate a right-handed circularly polarized electromagnetic wave.

[0020] In some embodiments, the terminal device further includes at least one rear camera, and the at least one rear camera is located in a ring-shaped area between the at least two metal rings.

[0021] In some embodiments, the terminal device further includes at least one functional module, and the at least one functional module is located inside a most inner metal ring of the at least two metal rings.

[0022] The technical scheme provided by the utility model has at least the following beneficial effects:

[0023] The terminal device, the satellite communication radio frequency circuit and the grounding circuit are respectively electrically connected to the metal ring with a slotted structure in the rear camera decoration assembly, current flows along the circular metal ring by using the circular structure of the metal ring, circularly polarized electromagnetic waves can be excited and generated, the circularly polarized electromagnetic waves are beneficial to improving the satellite communication quality and improving the satellite communication performance of the terminal device; in addition, the metal ring is located in the rear camera decoration assembly of the terminal device and faces the back of the terminal device, has a better clearance environment and has less mutual interference with other antennas in the terminal device. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0025] Figure 1 is a structural schematic diagram of a terminal device provided by an embodiment of the present application;

[0026] Figure 2 is a connection schematic diagram of a metal ring and a satellite communication radio frequency circuit and a grounding circuit provided by an embodiment of the present application;

[0027] Figure 3 is a structural schematic diagram of a terminal device provided by another embodiment of the present application;

[0028] Figure 4 is a connection schematic diagram of a metal ring and a satellite communication radio frequency circuit and a grounding circuit provided by another embodiment of the present application.

[0029] The reference signs in the drawings represent:

[0030] 1, device body;

[0031] 2, rear camera decoration assembly;

[0032] 21, metal ring;

[0033] 2101, first metal ring; 2102, second metal ring;

[0034] 211, slotted structure; 212, feed connection point; 213, grounding connection point;

[0035] 3, satellite communication radio frequency circuit;

[0036] 31, transmitting circuit; 32, receiving circuit;

[0037] 4, grounding circuit;

[0038] 5, rear camera;

[0039] 6, function module;

[0040] a, first direction; b, second direction. DETAILED DESCRIPTION

[0041] The exemplary embodiments will be described in detail herein with reference to the accompanying drawings. In the following description, unless otherwise indicated, like numbers in the different drawings represent the same or similar elements. The following exemplary embodiments described therein represent the best attempts at providing a full, complete, and saturated disclosure of the various aspects of the present application, and are not intended to limit the scope of the application as set forth in the claims.

[0042] In the description of the present application, it needs to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. Figure 1 The orientation or positional relationship shown is only for the purpose of facilitating the description of the present application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0043] It should be understood that in the present application, "electrical connection" can be understood as physical contact and electrical conduction of components; it can also be understood as a form of connection between different components in a circuit structure through a physical circuit that can transmit electrical signals such as copper foil or wire on a printed circuit board (PCB). "Communication connection" can refer to electrical signal transmission, including wireless communication connection and wired communication connection. Wireless communication connection does not require a physical medium and is not a connection relationship that defines the structure of the product. "Connection" and "connection" can both refer to a mechanical connection relationship or a physical connection relationship, that is, A and B are connected or A and B are connected, which means that there is a fastening member (such as a screw, bolt, rivet, etc.) between A and B, or A and B are in contact with each other and A and B are difficult to separate.

[0044] Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meaning as generally understood by one of ordinary skill in the art.

[0045] In order to make the purpose, technical scheme and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0046] In combination with Figure 1 and Figure 2 As shown in the drawings, the present embodiment provides a terminal device, which comprises: a device body 1, a rear camera trim assembly 2, a satellite communication radio frequency circuit 3 and a grounding circuit 4.

[0047] The rear camera trim assembly 2 is located on the back of the device body 1.

[0048] The rear decoration assembly 2 comprises at least one metal ring 21, each metal ring 21 is respectively provided with a slotted structure 211; the satellite communication radio frequency circuit 3 and the grounding circuit 4 are respectively electrically connected to the at least one metal ring 21, and the at least part of the metal ring 21 connected between the satellite communication radio frequency circuit 3 and the grounding circuit 4 forms working current to generate circularly polarized electromagnetic waves.

[0049] The terminal device of the embodiment, the satellite communication radio frequency circuit 3 and the grounding circuit 4 are respectively electrically connected to the metal ring 21 with the slotted structure 211 in the rear decoration assembly 2 of the terminal device, and the circular structure of the metal ring 21 is used to make the current flow along the circular metal ring 21, so as to stimulate the generation of circularly polarized electromagnetic waves. The circularly polarized electromagnetic waves are beneficial to improve the satellite communication quality and improve the satellite communication performance of the terminal device. In addition, the metal ring 21 is located in the rear decoration assembly 2 of the terminal device and faces the back of the terminal device, so that a better clearance environment is obtained and the mutual interference between the metal ring 21 and other antennas in the terminal device is smaller.

[0050] In the embodiment, the slotted structure 211 on the metal ring 21 can change the current characteristics of the metal ring 21, so that the metal ring 21 is formed as a single-channel current conductor of an open loop, thereby meeting the antenna radiation requirements. The metal ring 21, the satellite communication radio frequency circuit 3 and the grounding circuit 4 form a circularly polarized antenna. The circularly polarized antenna is a special antenna, and the electromagnetic wave electric field vector end trajectory emitted or received by the circularly polarized antenna rotates in a circular or elliptical shape.

[0051] In a complex environment such as a city canyon, an indoor environment, etc., the signal will undergo multiple reflections and refractions, resulting in a change in polarization direction. The circularly polarized antenna can receive signals of any polarization direction, reducing polarization mismatch loss and effectively improving the stability and reliability of signal reception.

[0052] The circularly polarized antenna uniformly radiates energy in different directions, has a wide signal coverage range, and is suitable for scenarios that require omnidirectional coverage, such as satellite communication.

[0053] Compared with a linearly polarized antenna, the circularly polarized antenna has a lower requirement for the directivity of the receiving antenna, thereby enhancing the flexibility and reliability of the system. In some application scenarios where it is difficult to accurately align the antenna, such as emergency rescue, military operations, etc., the circularly polarized antenna performs well due to this characteristic.

[0054] Circularly polarized waves have small attenuation under adverse weather conditions such as rain, fog, and snow, have strong penetration of the ionosphere, are not affected by the Faraday effect generated by the earth's polar magnetic field, and have important application value in the field of satellite communication.

[0055] In some possible implementation manners, the number of metal rings 21 can be one, two, three, etc.

[0056] In some possible implementation manners, the connection positions of the satellite communication radio frequency circuit 3 and the grounding circuit 4 with the metal ring 21 can be various, as long as the metal ring 21 between the satellite communication radio frequency circuit 3 and the grounding circuit 4 is long enough to form a loop-shaped, semi-loop-shaped or arc-shaped working current.

[0057] In some embodiments, the metal ring 21 with the slotted structure 211 is used to cover the satellite communication frequency band. The satellite communication frequency band includes an L frequency band (with a frequency range of 1.5-2.7 GHz), an S frequency band (with a frequency range of 2-4 GHz), and a C frequency band (with a downlink frequency range of 3.7-4.2 GHz and an uplink frequency range of 5.925-6.425 GHz).

[0058] In some possible implementation manners, the satellite communication radio frequency circuit 3 includes an oscillator, a frequency synthesizer, a modulator, a demodulator, a power amplifier, a filter, a radio frequency switch and the like, and can further include a radio frequency front-end module (RFFE) and the like.

[0059] In some possible implementation manners, the rear camera decoration assembly 2 is used to protect and decorate the rear camera module of the terminal device. The rear camera module refers to a camera system installed on the back of a terminal device (such as a smartphone, a tablet computer, a notebook computer and a surveillance camera) for taking photos or recording videos. The core function of the rear camera module is the photo shooting function, which can take clear and colorful photos by adjusting parameters such as focal length, aperture and exposure. Secondly, it can record high-definition or even ultra-high-definition videos, support different frame rate and resolution options, and can be used to record important moments in life, create video content, shoot Vlogs and the like. With the popularity of mobile payment and social media, the rear camera module also has the function of scanning two-dimensional codes, which can quickly complete payment, add friends, obtain information and the like.

[0060] In combination with Figure 2 As shown in FIG. 1, in some embodiments, each metal ring 21 is respectively provided with a feed connection point 212 and a grounding connection point 213. The feed connection point 212 is used to electrically connect the satellite communication radio frequency circuit 3, and the grounding connection point 213 is used to electrically connect the grounding circuit 4. The arc length between the feed connection point 212 and the grounding connection point 213 corresponds to a central angle greater than or equal to 90 degrees.

[0061] With the above arrangement, when the arc length between the power supply connection point 212 and the ground connection point 213 on the metal ring 21 meets the above requirements, it can be ensured that there is sufficient length and arc between the power supply connection point 212 and the ground connection point 213, so that an arc-shaped working current can be formed, and circularly polarized electromagnetic waves can be generated under the excitation of the working current.

[0062] Combination Figure 2 As shown, in some embodiments, the power supply connection point 212 is arranged close to the slotted structure 211.

[0063] With the above arrangement, the power supply connection point 212 is located close to the slotted structure 211. The end of the power supply connection point 212 to the slotted structure 211 is an open circuit. The working current will be concentrated on the side of the power supply connection point 212 facing away from the slotted structure 211 and will flow to the grounding point. As a result, there is only one working current between the power supply connection point 212 and the grounding connection point 213 on the metal ring 21, and no other current will cause interference. The radiation performance and radiation efficiency of the metal ring 21 are better.

[0064] In some embodiments, the circularly polarized electromagnetic wave includes at least one of left-hand circularly polarized electromagnetic waves and right-hand circularly polarized electromagnetic waves.

[0065] By arranging the left and right positions of the power supply connection point 212 and the grounding connection point 213 in a reasonable manner, the direction of the working current on the metal ring 21 can be different, thereby generating a left-hand circularly polarized electromagnetic wave or a right-hand circularly polarized electromagnetic wave.

[0066] The terminal equipment can implement various satellite communication schemes, including but not limited to BeiDou communication, and can easily achieve both left-hand circular polarization and right-hand circular polarization.

[0067] Combination Figure 3 As shown, in some embodiments, the number of metal rings 21 is at least two, the at least two metal rings 21 have different diameters and are arranged concentrically; wherein, at least one metal ring 21 is used to generate left-hand circularly polarized electromagnetic waves, and at least one metal ring 21 is used to generate right-hand circularly polarized electromagnetic waves.

[0068] The terminal device in this embodiment achieves dual circular polarization without the need for switching devices, which significantly reduces costs. Furthermore, it does not require additional structures; the structural advantages of the concentrically arranged metal rings 21 are sufficient to achieve this, thus realizing cost reduction and efficiency improvement in the terminal device.

[0069] Combination Figure 4As shown in the figure, in some embodiments, on the metal ring 21 for generating left-handed circularly polarized electromagnetic waves, the slotted structure 211, the feed connection point 212 and the ground connection point 213 are arranged in sequence along the first direction a; on the metal ring 21 for generating right-handed circularly polarized electromagnetic waves, the slotted structure 211, the feed connection point 212 and the ground connection point 213 are arranged in sequence along the second direction b; the first direction a and the second direction b are opposite directions.

[0070] Through the above arrangement, by arranging the slotted structure 211, the feed connection point 212 and the ground connection point 213 on the metal ring 21 according to different first direction a and second direction b, the metal ring 21 can have the performance of exciting left-handed circularly polarized electromagnetic waves and right-handed circularly polarized electromagnetic waves respectively, thereby realizing two different satellite communication signals of the terminal device.

[0071] In combination Figure 3 And Figure 4 As shown in the figure, in some embodiments, the metal ring 21 includes a first metal ring 2101 and a second metal ring 2102, the diameter of the first metal ring 2101 is greater than that of the second metal ring 2102; the first metal ring 2101 is used to generate left-handed circularly polarized electromagnetic waves, and the second metal ring 2102 is used to generate right-handed circularly polarized electromagnetic waves.

[0072] In this embodiment, the first metal ring 2101 has a larger diameter and can be used to excite left-handed circularly polarized electromagnetic waves with a larger wavelength, and the second metal ring 2102 has a smaller diameter and can be used to excite right-handed circularly polarized electromagnetic waves with a shorter wavelength.

[0073] In some possible implementations, the wavelength of the left-handed circularly polarized electromagnetic wave is 1.6 GHz, and the wavelength of the right-handed circularly polarized electromagnetic wave is 2.5 GHz.

[0074] In combination Figure 4 As shown in the figure, in some embodiments, the satellite communication radio frequency circuit 3 includes a transmitting circuit 31 and a receiving circuit 32, the transmitting circuit 31 is electrically connected to the metal ring 21 for generating left-handed circularly polarized electromagnetic waves, and the receiving circuit 32 is electrically connected to the metal ring 21 for generating right-handed circularly polarized electromagnetic waves.

[0075] By connecting the metal ring 21 for generating left-handed circularly polarized electromagnetic waves to the transmitting circuit 31, the terminal device can input a feed current to the metal ring 21 through the transmitting circuit 31 to generate left-handed circularly polarized electromagnetic waves to send signals to the satellite. By connecting the metal ring 21 for generating right-handed circularly polarized electromagnetic waves to the receiving circuit 32, the terminal device can stably and accurately receive satellite signals through the metal ring 21, and demodulate the signals through the receiving circuit 32.

[0076] Exemplarily, the satellite communication radio frequency circuit 3 is configured to cover the Beidou satellite communication frequency band, so as to realize signal transmission between the terminal device and the Beidou satellite communication system.

[0077] In combination Figure 3 As shown in the drawings, in some embodiments, the terminal device further comprises at least one rear camera 5, and the at least one rear camera 5 is located in the annular area between the at least two metal rings 21.

[0078] In this embodiment, the annular area between the at least two metal rings 21 is used to arrange the rear camera 5, so as to improve the aesthetic appearance of the back of the device body 1.

[0079] Exemplarily, the rear camera 5 can include, but is not limited to, a regular camera, a wide-angle camera, a long-focus camera, a macro camera, and the like.

[0080] In some possible implementations, the rear camera decoration assembly 2 further comprises a glass cover plate (not shown in the drawings), which covers the metal ring 21 and is used to protect the internal structure.

[0081] In combination Figure 3 As shown in the drawings, in some embodiments, the terminal device further comprises at least one functional module 6, and the at least one functional module 6 is located inside the innermost metal ring 21 of the at least two metal rings 21.

[0082] Through the above arrangement, the functional module 6 which needs to be arranged on the back of the device body 1 is arranged inside the metal ring 21, so as to make full use of the space on the back of the device body 1, which is conducive to improving the aesthetic appearance of the back of the device body 1, and the functional module 6 can be protected by the rear camera decoration assembly 2.

[0083] Exemplarily, the functional module 6 can be a ranging module, a light sensing module, a flash module, and the like.

[0084] The terminal device provided in this embodiment can be any one of various types of computer system devices that are mobile or portable and perform wireless communication. Specifically, the terminal device can be a mobile phone or a smart phone (for example, an iPhone TM-based phone, an Android TM-based phone), a portable game device (for example, Nintendo DS TM, PlayStation Portable TM, Gameboy Advance TM, iPhone TM), a laptop computer, a PDA, a portable Internet device, a music player, and a data storage device, other handheld devices, and the like such as a headset, and the terminal device can also be other wearable devices that need to be charged (for example, a head-mounted device (HMD) such as an electronic bracelet, an electronic necklace, a terminal device, or a smart watch).

[0085] The terminal device can also be any one of multiple terminal devices, including but not limited to cellular phones, smartphones, other wireless communication devices, personal digital assistants, audio players, other media players, music recorders, video recorders, other media recorders, radios, medical devices, vehicle transport instruments, calculators, programmable remote controls, pagers, laptop computers, desktop computers, printers, netbooks, personal digital assistants (PDAs), portable multimedia players (PMPs), Moving Image Experts Group (MPEG-1 or MPEGG-2) audio layer 3 (MP3) players, portable medical devices, and digital cameras and combinations thereof.

[0086] In some cases, a terminal device can perform multiple functions (e.g., playing music, displaying video, storing pictures, and receiving and sending telephone calls). If desired, the terminal device can be such as a cellular phone, media player, other handheld device, wristwatch, pendant device, handset device, or other compact portable device.

[0087] It should be noted that, in this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0088] In the description of this specification, the references to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" refer to specific features, structures, materials, or characteristics described in connection with the embodiments or examples that are included in at least one embodiment or example of the present invention.

[0089] The above description is merely an embodiment of this utility model and is not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A terminal device, characterized by comprising: The terminal device comprises a device body (1), a rear camera decoration assembly (2), a satellite communication radio frequency circuit (3) and a grounding circuit (4); The rear camera decoration assembly (2) is located on the back of the device body (1); The rear camera decoration assembly (2) comprises at least one metal ring (21), each of which is provided with a slotted structure (211); the satellite communication radio frequency circuit (3) and the grounding circuit (4) are respectively electrically connected to the at least one metal ring (21), and the working current is formed on at least part of the metal ring (21) connected between the satellite communication radio frequency circuit (3) and the grounding circuit (4), generating circularly polarized electromagnetic waves.

2. The terminal device according to claim 1, characterized by Each of the metal rings (21) is respectively provided with a feed connection point (212) and a grounding connection point (213), the feed connection point (212) is used for electrically connecting the satellite communication radio frequency circuit (3), and the grounding connection point (213) is used for electrically connecting the grounding circuit (4); The arc length between the feed connection point (212) and the grounding connection point (213) corresponds to a central angle greater than or equal to 90 degrees.

3. The terminal device according to claim 2, characterized by The feed connection point (212) is arranged close to the slotted structure (211).

4. The terminal device according to claim 2, characterized by The circularly polarized electromagnetic waves comprise at least one of left-handed circularly polarized electromagnetic waves and right-handed circularly polarized electromagnetic waves.

5. The terminal device according to claim 4, characterized by The number of the metal rings (21) is at least two, at least two of the metal rings (21) are different in diameter and concentrically arranged; At least one of the metal rings (21) is used for generating left-handed circularly polarized electromagnetic waves, and at least one of the metal rings (21) is used for generating right-handed circularly polarized electromagnetic waves.

6. The terminal device according to claim 5, characterized by On the metal ring (21) for generating left-handed circularly polarized electromagnetic waves, the slotted structure (211), the feed connection point (212) and the grounding connection point (213) are arranged in a first direction (a) in sequence; on the metal ring (21) for generating right-handed circularly polarized electromagnetic waves, the slotted structure (211), the feed connection point (212) and the grounding connection point (213) are arranged in a second direction (b) in sequence; The first direction (a) and the second direction (b) are opposite directions.

7. The terminal device according to claim 5, characterized by The metal ring (21) comprises a first metal ring (2101) and a second metal ring (2102), the diameter of the first metal ring (2101) is greater than that of the second metal ring (2102); The first metal ring (2101) is used for generating left-handed circularly polarized electromagnetic waves, and the second metal ring (2102) is used for generating right-handed circularly polarized electromagnetic waves.

8. The terminal device of any one of claims 5 to 7, wherein, The satellite communication radio frequency circuit (3) comprises a transmitting circuit (31) and a receiving circuit (32), the transmitting circuit (31) is electrically connected to the metal ring (21) for generating left-handed circularly polarized electromagnetic waves, and the receiving circuit (32) is electrically connected to the metal ring (21) for generating right-handed circularly polarized electromagnetic waves.

9. The terminal device according to claim 5, characterized by The terminal device further comprises at least one rear camera (5), which is located in the annular area between at least two metal rings (21).

10. The terminal device according to claim 5, characterized by The terminal device further comprises at least one functional module (6) which is located inside the innermost of the at least two metal rings (21).

Images