Capacitive coupling mobile phone telescopic antenna

Abstract

The utility model discloses a capacitive coupling mobile phone telescopic antenna, which relates to the technical field of mobile communication and wireless communication, and comprises an antenna groove assembly with an opening at one end, a telescopic antenna rod and a coupling metal sheet, the antenna groove assembly is arranged in a mobile phone, and the top of the mobile phone is provided with an antenna outlet corresponding to the opening of the antenna groove assembly. The antenna outlet is in sealed contact with the outer wall of the antenna groove assembly, the telescopic antenna rod is arranged in the antenna groove assembly through the telescopic antenna rod, the coupling metal sheet is attached to the outer wall of the antenna groove assembly and connected with the mobile phone PCB, and the coupling metal sheet and the telescopic antenna rod form capacitive coupling. And a mobile phone radio frequency signal is transmitted to the telescopic antenna mast through capacitive coupling. According to the utility model, a non-contact capacitive coupling mode is adopted for feeding, so that transmission of radio frequency signals is realized; by combining the advantages of the telescopic antenna, the antenna can be folded when not used and is convenient to carry; the wireless communication capability of the mobile phone in the Sub-GHz frequency band can be enhanced; the waterproof and moistureproof performance is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mobile communication, wireless communication technical field, more specifically relates to a capacitive coupling mobile phone telescopic antenna technical field. BACKGROUND

[0002] With the rapid development of mobile communication technology, the requirement of smart phone to antenna performance is increasing, especially in 5G multi-frequency communication, millimeter wave transmission and complex environment adaptability, etc. The traditional mobile phone antenna design usually adopts built-in microstrip antenna or telescopic antenna, but there are the following technical bottlenecks in practical application:

[0003] 1. Electrical connection reliability problem: the traditional telescopic antenna is connected with the internal circuit of the mobile phone through physical contact (such as spring pin, welding point), and the contact resistance increases due to oxidation and wear after long-term use, which causes signal attenuation and even communication interruption. In addition, when the metal contact is directly exposed to the external environment, electrostatic discharge (ESD) is easy to invade the internal circuit through the contact, causing permanent damage to the radio frequency chip or baseband module.

[0004] 2. High complexity of waterproof and dustproof design: physical electrical connection needs to open a through hole in the body to lead out the feed point, which makes it difficult to realize the sealing structure. Especially under the demand of IP68 level dustproof and waterproof, the contact type antenna needs to increase sealing ring or glue filling process, which significantly improves the production cost and assembly difficulty.

[0005] 3. Difficult to adapt to low frequency communication: the built-in PCB antenna is limited by fixed size and layout, and it is difficult to adapt to low frequency communication with long wavelength, especially in 400M-510M frequency band, there are problems of low gain, narrow bandwidth and difficult matching.

[0006] In view of the above problems, a new antenna scheme is needed, which can ensure high frequency performance, eliminate the reliability risk brought by physical contact, and simplify the sealing and production process of terminal equipment. UTILITY MODEL CONTENT

[0007] The utility model aims at: in order to solve the above technical problem, the utility model provides a capacitive coupling mobile phone telescopic antenna. Through non-contact signal transmission and tunable structure design, the technical limitation of traditional antenna is broken through, and an innovative solution is provided for mobile communication equipment with high reliability and multi-scene application.

[0008] The utility model adopts the following technical scheme to realize the above purpose:

[0009] The utility model provides a kind of capacitive coupling mobile phone telescopic antenna, including the antenna slot assembly of one end opening, telescopic antenna pole and coupling metal sheet, antenna slot assembly is arranged in mobile phone inside, mobile phone top is provided with the antenna outlet corresponding with the opening of antenna slot assembly, antenna outlet and the sealing contact of antenna slot assembly outer wall, telescopic antenna pole is set in antenna slot assembly by telescopic antenna pole,

[0010] Coupling metal sheet is attached to the outer wall of antenna slot assembly, coupling metal sheet is connected with mobile phone PCB board, coupling metal sheet forms capacitive coupling with telescopic antenna pole, and the mobile phone radio frequency signal is transmitted to the telescopic antenna pole through capacitive coupling.

[0011] The present scheme adopts the mode of non-contact capacitive coupling for power supply, realizes the transmission of radio frequency signal; combined with the advantages of telescopic antenna, it can be collected when not used for convenient carrying; it can enhance the wireless communication capability of mobile phone in Sub-GHz frequency band; it can improve the waterproof and moisture-proof performance and the protection of ESD; it can increase the service life of antenna; when the antenna is damaged, it is convenient to repair and replace.

[0012] In one embodiment, the antenna slot assembly includes an antenna slot and a slot cover, the antenna slot and the slot cover enclose a cavity with one end opening, and the outer wall of the cavity opening is sealingly connected with the antenna outlet.

[0013] Specifically, the slot cover covers the antenna slot, and the antenna slot is closed by fixing with hot melting to realize waterproof and dustproof. The telescopic antenna rod is inserted into the antenna slot, and the coupling metal sheet is wrapped or attached to the outside of the antenna slot. The coupling metal sheet forms capacitive coupling with the telescopic antenna rod inside, the mobile phone PCB board radio frequency power supply is connected to the coupling metal sheet, the coupling metal sheet forms capacitive coupling with the telescopic antenna rod, and the mobile phone PCB board transmits signals to the telescopic antenna rod through capacitive coupling, and then transmits them out.

[0014] In one embodiment, the slot cover is buckled on the antenna slot, and the antenna slot and the slot cover are sealingly fixed by hot melting.

[0015] In one embodiment, the coupling metal sheet is connected with the mobile phone PCB board through the feeding position.

[0016] In one embodiment, the telescopic antenna rod is inserted into the cavity enclosed by the antenna slot and the slot cover, and is fixed in the cavity by friction.

[0017] In one embodiment, the telescopic antenna rod is a five-stage sleeve antenna, and the diameters of the sleeves from outside to inside gradually decrease.

[0018] In one embodiment, the adjacent two sleeves are limited by clamping spring and clamping port.

[0019] In one embodiment, the antenna slot has a lower semicircular cross section, the slot cover has an upper semicircular cross section, and the antenna slot and the slot cover form a cylinder with one end sealed.

[0020] The utility model discloses the beneficial effect is as follows:

[0021] The scheme adopts the non-contact capacitive coupling mode for power supply, realizes the transmission of radio frequency signal, combines the advantage of telescopic antenna, can be collected and carried conveniently when not using, can enhance the wireless communication ability of mobile phone in Sub-GHz frequency band, improves waterproof and moisture-proof performance, improves the protection of ESD, increases the service life of antenna, and is convenient for maintenance and replacement when the antenna is damaged. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be briefly introduced the drawings needed to be used in the embodiment, it should be understood, the following drawings only shows some embodiments of the utility model, therefore should not be regarded as the limitation to the range, for the ordinary skilled person in the art, under the premise of not paying the creative labor, can also obtain other related drawings according to these drawings.

[0023] Fig. 1 It is the structural schematic diagram of the utility model;

[0024] Fig. 2 It is the schematic diagram of the explosion structure of the utility model;

[0025] Reference signs: 1-antenna slot, 2-slot cover, 3-telescopic antenna rod, 4-coupling metal sheet, 5-feeding position, 6-mobile phone PCB board. DETAILED DESCRIPTION

[0026] In order to make the technical problem, technical scheme and technical effect of the utility model more clearly, the following will be combined with the drawings in the embodiment of the utility model, and the technical scheme in the embodiment of the utility model is clearly and completely described, obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment. The components of the embodiment of the utility model described and shown in the drawing here can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiment of the utility model provided in the drawing is not intended to limit the scope of the claimed utility model, but only represents the selected embodiment of the utility model. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skilled person in the art without making creative labor belong to the scope of the protection of the utility model.

[0028] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] Example 1

[0031] like Figs. 1-2 As shown, this embodiment of the present invention provides a capacitively coupled mobile phone telescopic antenna, including an antenna slot 1 assembly with one open end, a telescopic antenna rod 3, and a coupling metal plate 4. The antenna slot 1 assembly is disposed inside the mobile phone, and an antenna outlet corresponding to the opening of the antenna slot 1 assembly is opened at the top of the mobile phone. The antenna outlet is in sealed contact with the outer wall of the antenna slot 1 assembly. The telescopic antenna rod 3 is disposed inside the antenna slot 1 assembly.

[0032] The coupling metal sheet 4 is attached to the outer wall of the antenna slot 1 assembly. The coupling metal sheet 4 is connected to the mobile phone PCB board 6. The coupling metal sheet 4 and the telescopic antenna rod 3 form capacitive coupling, and the mobile phone radio frequency signal is transmitted to the telescopic antenna rod 3 through capacitive coupling.

[0033] This solution uses non-contact capacitive coupling for power supply to achieve radio frequency signal transmission; combined with the advantages of a retractable antenna, it can be folded up for easy carrying when not in use; it can enhance the wireless communication capabilities of mobile phones in the Sub-GHz band; improve waterproof and moisture-proof performance and enhance ESD protection; increase antenna lifespan; and facilitate repair and replacement when the antenna is damaged.

[0034] Example 2

[0035] like Figs. 1-2 As shown, this embodiment of the present invention provides a capacitively coupled mobile phone telescopic antenna, including an antenna slot 1 assembly with one open end, a telescopic antenna rod 3, and a coupling metal plate 4. The antenna slot 1 assembly is disposed inside the mobile phone, and an antenna outlet corresponding to the opening of the antenna slot 1 assembly is opened at the top of the mobile phone. The antenna outlet is in sealed contact with the outer wall of the antenna slot 1 assembly. The telescopic antenna rod 3 is disposed inside the antenna slot 1 assembly.

[0036] The coupling metal sheet 4 is attached to the outer wall of the antenna slot 1 assembly, and the coupling metal sheet 4 is connected to the mobile phone PCB 6. The coupling metal sheet 4 forms a capacitive coupling with the telescopic antenna rod 3, and the mobile phone radio frequency signal is transmitted to the telescopic antenna rod 3 through the capacitive coupling.

[0037] The antenna slot 1 assembly comprises the antenna slot 1 and the slot cover 2. The antenna slot 1 and the slot cover 2 form an open-ended cavity. The outer wall of the open end of the cavity is sealingly connected to the antenna outlet.

[0038] Specifically, the slot cover 2 covers the antenna slot 1 and is fixed by heat melting to seal the antenna slot 1, thereby achieving waterproof and dustproof. The telescopic antenna rod 3 is inserted into the antenna slot 1, and the coupling metal sheet 4 is wrapped or attached to the outside of the antenna slot 1. The coupling metal sheet 4 forms a capacitive coupling with the telescopic antenna rod 3 inside. The mobile phone PCB 6 is connected to the coupling metal sheet 4 for radio frequency feeding. The coupling metal sheet 4 forms a capacitive coupling with the telescopic antenna rod 3. The mobile phone PCB 6 transmits signals to the telescopic antenna rod 3 through the capacitive coupling, and then transmits them out.

[0039] Embodiment 3

[0040] This embodiment is further optimized on the basis of embodiment 2, specifically:

[0041] The slot cover 2 is buckled on the antenna slot 1, and the antenna slot 1 and the slot cover 2 are sealingly fixed by heat melting.

[0042] The coupling metal sheet 4 is connected to the mobile phone PCB 6 through the feeding position 5.

[0043] The telescopic antenna rod 3 is inserted into the cavity formed by the antenna slot 1 and the slot cover 2 and is fixed in the cavity by friction.

[0044] The telescopic antenna rod 3 is a five-stage sleeve antenna. The diameters of the sleeves from the outside to the inside gradually decrease.

[0045] The adjacent two sleeves are limited by the clamping spring and the clamping interface.

[0046] Embodiment 4

[0047] This embodiment is further optimized on the basis of embodiment 3, specifically:

[0048] The cross section of the antenna slot 1 is a lower semicircle, the cross section of the slot cover 2 is an upper semicircle, and the antenna slot 1 and the slot cover 2 form a cylindrical body with one end sealed.

Claims

1. A capacitively coupled handset telescopic antenna, characterized by, The antenna slot (1) assembly, telescopic antenna rod (3) and coupling metal sheet (4) are provided, the antenna slot (1) assembly is arranged in the mobile phone, the top of the mobile phone is provided with an antenna outlet corresponding to the opening of the antenna slot (1) assembly, the antenna outlet is in sealing contact with the outer wall of the antenna slot (1) assembly, the telescopic antenna rod (3) is arranged in the antenna slot (1) assembly through the telescopic antenna rod (3), The coupling metal sheet (4) is attached to the outer wall of the antenna slot (1) assembly, the coupling metal sheet (4) is connected to the mobile phone PCB (6), the coupling metal sheet (4) and the telescopic antenna rod (3) form a capacitive coupling, and the mobile phone radio frequency signal is transmitted to the telescopic antenna rod (3) through the capacitive coupling.

2. A capacitively coupled handset telescopic antenna according to claim 1, wherein, The antenna slot (1) assembly comprises an antenna slot (1) and a slot cover (2), the antenna slot (1) and the slot cover (2) form a cavity with one end open, and the outer wall of the cavity opening is sealingly connected with the antenna outlet.

3. A capacitively coupled handset telescopic antenna according to claim 2, wherein, The slot cover (2) is buckled on the antenna slot (1), and the antenna slot (1) and the slot cover (2) are sealingly fixed by a hot melting method.

4. A capacitively coupled handset telescopic antenna according to claim 2, wherein, The coupling metal sheet (4) is connected to the mobile phone PCB (6) through the feed position (5).

5. A capacitively coupled handset telescopic antenna according to claim 2, wherein, The telescopic antenna rod (3) is inserted into the cavity formed by the antenna slot (1) and the slot cover (2), and is fixed in the cavity by friction.

6. A capacitively coupled handset telescopic antenna according to claim 5, wherein, The telescopic antenna rod (3) is a five-stage sleeve antenna, and the diameters of the sleeves gradually decrease from the outside to the inside.

7. A capacitively coupled handset telescopic antenna according to claim 6, wherein, The adjacent two sleeves are limited by the clamping spring and the clamping port.

8. A capacitively coupled handset telescopic antenna according to claim 6, wherein, The cross section of the antenna slot (1) is a lower half arc, the cross section of the slot cover (2) is an upper half arc, and the antenna slot (1) and the slot cover (2) form a cylindrical body with one end sealed.

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