CN114843764A

CN114843764A - 4G waterproof antenna

Info

Publication number: CN114843764A
Application number: CN202210549086.8A
Authority: CN
Inventors: 肖汉; 杨运刚
Original assignee: Shenzhen Yingjiachuang Electronic Technology Co ltd
Current assignee: Shenzhen Yingjiachuang Electronic Technology Co ltd
Priority date: 2022-05-20
Filing date: 2022-05-20
Publication date: 2022-08-02

Abstract

The application discloses waterproof antenna of 4G includes: install the strip PCB board of antenna main part and seal the antenna housing including the strip PCB board, wherein: a through hole for accessing the feeder line is formed in one short side of the strip-shaped PCB, the through hole is widened in the strip-shaped PCB and extends to a welding point of the feeder line and the strip-shaped PCB and then is narrowed to form a first narrow opening, and the first narrow opening is completely sealed through a colloid and is used for sealing the welding point on the inner side of the first narrow opening; the antenna outer cover seals the strip-shaped PCB inside, and a communicating pipe integrally connected with the antenna outer cover is also arranged on one side of the strip-shaped PCB, which is provided with the through hole; and the other side of the communicating pipe is connected with a female needle for fixing the 4G waterproof antenna on the 4G equipment through the female needle. This waterproof antenna of 4G guarantees that the 4G signal is not influenced simultaneously, and the equipment is simple, and compact structure also is convenient for dismantle simultaneously, and waterproof sealing performance is good.

Description

4G waterproof antenna

Technical Field

The invention relates to the technical field of wireless communication hardware, in particular to a 4G waterproof antenna.

Background

4G, fourth generation mobile communication technology. The method is based on continuous optimization and upgrading of the 3G communication technology, integrates the advantages of the 3G communication technology, derives a series of inherent characteristics, and takes the WLAN technology as a development key point, namely, the method is used for surfing the internet. Firstly, the 4G communication can realize high-definition transmission of original images and original videos on picture and video transmission, and the transmission quality of the transmission is comparable to the image quality of a computer; secondly, by using the 4G communication technology, the highest speed can reach dozens of million per second in downloading software, files, pictures and audios and videos, which is not realized by the 3G communication technology and is also a remarkable advantage of the 4G communication technology. The antenna can better collect wireless signals, so that wireless communication is more stable.

An antenna is a device capable of effectively radiating electromagnetic waves to a specific direction in a space or effectively receiving electromagnetic waves from a specific direction in a space. All devices for transmitting signals by means of electromagnetic waves must be provided with an antenna which converts a guided wave propagating on a transmission line into an electromagnetic wave propagating in an unbounded medium, usually free space, or vice versa. The antennas are generally reciprocal in that the same pair of antennas can be used as both transmit and receive antennas. The same antenna is the same as the basic characteristic parameter for transmission or reception. This is the reciprocity theorem for antennas.

The difference of environment has very big influence to the signal transmission of antenna, and the wet environment can influence characteristics such as the electric conductivity of antenna equipment components and parts, can cause very big influence to the transmission of antenna and receiving radio wave.

Disclosure of Invention

The embodiment of the invention provides a 4G waterproof antenna, which aims to solve the problems that the moist environment can influence the characteristics of electric conductivity and the like of antenna equipment components and parts, and great influence can be caused on the transmission and the receiving of radio waves of the antenna.

A 4G waterproof antenna comprising: install the strip PCB board of antenna main part and seal the antenna housing including the strip PCB board, wherein:

a through hole for accessing the feeder line is formed in one short side of the strip-shaped PCB, the through hole is widened in the strip-shaped PCB and extends to a welding point of the feeder line and the strip-shaped PCB and then is narrowed to form a first narrow opening, and the first narrow opening is completely sealed through a colloid and is used for sealing the welding point on the inner side of the first narrow opening;

the antenna outer cover seals the strip-shaped PCB inside, and a communicating pipe integrally connected with the antenna outer cover is also arranged on one side of the strip-shaped PCB, which is provided with the through hole; and the other side of the communicating pipe is connected with a female needle for fixing the 4G waterproof antenna on the 4G equipment through the female needle.

Furthermore, the inner connection position of the communicating pipe and the antenna outer cover is provided with a baffle plate, the baffle plate is provided with a center hole for passing through the feeder line, and a waterproof rubber plug for sealing the feeder line onto the baffle plate is arranged in the communicating pipe.

Furthermore, the pipe wall of the connecting pipe has thickness, a second narrow opening in the connecting pipe is formed, and the waterproof rubber plug is filled in the second narrow opening.

Further, the antenna outer cover is flat along the shape of the strip-shaped PCB.

Furthermore, the outer wall of the antenna outer cover is integrally provided with an antenna rubber sleeve through ultrasonic gluing.

Furthermore, the female needle comprises a feeder hole, the feeder hole is connected with a heat-shrinkable tube sleeve, and the heat-shrinkable tube sleeve extends into the communicating tube.

Furthermore, the inner wall of the other side of the communicating pipe is provided with internal threads, and the female needle is sleeved and connected on the connecting pipe through the internal threads by a rivet fixedly connected with one side of the female needle.

Furthermore, the other short side of the strip-shaped PCB is right-angled to form a right-angled end, and the right-angled end is used for enabling the side edge of the strip-shaped PCB to be tightly attached to the inner wall of the antenna outer cover.

Furthermore, a fixing hole is formed in one side of the right-angle end of the strip-shaped PCB and used for fixing the strip-shaped PCB on the inner wall of the antenna outer cover through the needle face glue column through the fixing hole.

Furthermore, the feeder adopts a Teflon coaxial cable.

Above-mentioned 4G waterproof antenna, antenna housing and communicating pipe connected through the integral type, including sealed with inside strip PCB board and feeder, the welding point of feeder is sealed completely in the first narrow mouth of strip PCB board through the colloid simultaneously, when guaranteeing that the 4G signal is not influenced, the equipment is simple, compact structure, small and exquisite light, be particularly suitable for being used for soaking, drench rain, the well, in the external antenna of tables such as sewer, also be convenient for simultaneously dismantle, sealing waterproof performance is good.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.

FIG. 1 is a schematic diagram of a 4G waterproof antenna with a view angle of the front surface of a strip PCB according to an embodiment of the present invention;

FIG. 2 is a schematic view of the 4G waterproof antenna in a first embodiment of the invention, taken from the back side of the strip PCB as the viewing angle;

FIG. 3 is a schematic view of the connection between the base and the heat shrinkable sleeve according to the second embodiment of the present invention;

description of the reference numerals: 10. a strip-shaped PCB board; 20. an antenna housing; 30. a welding point; 40. a communicating pipe; 50. a female needle; 41. a baffle plate; 42. a waterproof rubber plug; 51. thermal shrinkage pipe sheathing; 11. a fixing hole; 52. and (4) riveting.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

An embodiment provided by the present application is as follows: a 4G waterproof antenna, as shown in fig. 1, comprising: a strip-shaped PCB board 10 provided with an antenna main body and an antenna cover 20 sealing the strip-shaped PCB board 10 therein, wherein:

a through hole for accessing the feeder line is formed in one short side of the strip-shaped PCB 10, the through hole is widened in the strip-shaped PCB 10 and extends to the welding point 30 of the feeder line and the strip-shaped PCB 10, and then the through hole is narrowed to form a first narrow opening, and the first narrow opening is completely sealed through glue and used for sealing the welding point 30 on the inner side of the first narrow opening;

the antenna outer cover 20 seals the strip-shaped PCB 10, and the antenna outer cover 20 is also provided with a communicating pipe 40 integrally connected with the antenna outer cover 20 at one side of the strip-shaped PCB 10 with a through hole; the other side of the communication pipe 40 is connected with a female pin 50 for fixing the 4G waterproof antenna to the 4G device through the female pin 50.

Specifically, the feeder line is also called a cable line, and plays a role of transmitting signals in a wireless transmission system, signals received by the antenna are transmitted to a front-end system through the feeder line, and signals output by the front end are also transmitted to the television of each user through the cable line. Therefore, the quality and the type of the feeder line are important factors directly influencing the receiving effect of the system and the signal transmission quality.

The feeder line is flat and generally double-line in appearance, the line body is made of insulating plastic, a shielding layer is not arranged outside the feeder line, the anti-interference capability is extremely poor, the outdoor use performance of the feeder line can be influenced by rainy weather, and the feeder line is basically replaced by a coaxial cable at present.

The 4G device can be connected with the 4G waterproof antenna through a reserved SMA (miniature version A) interface. The SMA interface generally has two forms, and the standard SMA is an external thread and a hole at one end and an internal thread and a needle at the other end; the reversed polarity RP-SMA is an external thread and a needle at one end, and an internal thread and a hole at the other end. The wireless equipment with RP-SMA interface is popular, the interface is used in more than 70% of 4G AP, wireless route and more than 90% PCI interface, the interface is of proper size, the hand held intercom has more or less of this type, and the inside needle and tube are opposite to the wireless equipment. The wireless AP and wireless routing using this interface comprise most of the civilian equipment.

Above-mentioned 4G waterproof antenna, antenna dustcoat 20 and communicating pipe 40 through the integral type is connected, including sealed with inside strip PCB board 10 and feeder, the welding point 30 of feeder is sealed completely in the first narrow mouth of strip PCB board 10 through the colloid simultaneously, when guaranteeing that the 4G signal is not influenced, the equipment is simple, compact structure, small and exquisite light, be particularly suitable for being used for soaking, drench rain, the well, in the external antenna of tables such as sewer, also be convenient for dismantle simultaneously, sealing waterproof performance is good.

Further, a baffle 41 is provided at the connection between the communicating tube 40 and the inside of the antenna housing 20, as shown in fig. 2, the baffle 41 has a center hole for passing the feeder, and a waterproof plug 42 for sealing the feeder to the baffle 41 is provided inside the communicating tube 40.

Specifically, after the feeder line firstly passes through the waterproof rubber plug 42 and plugs the waterproof rubber plug 42 into the central hole of the rod sleeve, the feeder line is welded to the welding point 30 of the strip-shaped PCB.

Further, the wall of the connecting tube has a thickness that forms a second narrow opening inside the connecting tube, the waterproof plug 42 filling the second narrow opening.

Specifically, the waterproof plug 42 fills the second narrow opening from which moisture vapor is difficult to enter the inside of the antenna housing 20, further enhancing the tightness inside the connection tube.

Further, the antenna housing 20 is flat along the outer shape of the strip PCB board 10.

Specifically, the shape of the strip-shaped PCB board 10 is flat, which reduces the area of water vapor covering the housing, and improves the service life of the 4G waterproof antenna.

Further, the outer wall of the antenna housing 20 is integrally provided with an antenna rubber sleeve by ultrasonic gluing.

Specifically, the antenna rubber sleeve covers the outer wall of the antenna housing 20, and a barrier is added between the flowing water and the antenna housing 20, so that the waterproofness is further improved.

Further, the female needle 50 includes a feeder hole connected to a heat-shrinkable tube sleeve 51, and the heat-shrinkable tube sleeve 51 extends into the communication tube 40.

Specifically, the feeder line can be wrapped in the heat-shrinkable tube sleeve, and the influence of the environment on the temperature and humidity of the feeder line is reduced.

Further, the inner wall of the other side of the communication pipe 40 has an internal thread, and as shown in fig. 3, the female pin 50 is hitched on the connection pipe through the internal thread by a rivet 52 fixedly connected to one side thereof.

Specifically, the female pin may be stably fixed to the connection pipe by a rivet, improving the reliability of the antenna.

Further, the other short side of the strip-shaped PCB 10 is right-angled to form a right-angled end, for tightly attaching the side of the strip-shaped PCB 10 to the inner wall of the antenna housing 20.

Specifically, the other short side of the strip-shaped PCB 10 is rectangular to form a right-angled end, which is used to make the side of the strip-shaped PCB 10 closely adhere to the inner wall of the antenna housing 20, so as to improve the stability of the strip-shaped PCB 10 in the antenna housing 20, and prevent displacement due to severe impact.

Further, a fixing hole 11 is provided on one side of the right-angled end of the strip-shaped PCB 10 for fixing the strip-shaped PCB 10 on the inner wall of the antenna housing 20 through the fixing hole 11 using a pin glue column.

Specifically, the strip-shaped PCB 10 can be effectively fixed to the inner wall of the antenna housing 20 through the pin glue column, thereby ensuring the stability and reliability of the antenna operation.

Furthermore, the feeder adopts a Teflon coaxial cable.

Specifically, Polytetrafluoroethylene (PTFE), commonly known as "plastic king," is a polymer prepared by polymerizing tetrafluoroethylene as a monomer. White wax, translucency, heat resistance and cold resistance are excellent, and the wax can be used for a long time at-180-260 ℃. The material has the characteristics of acid resistance, alkali resistance and various organic solvents resistance, and is almost insoluble in all solvents. Meanwhile, the polytetrafluoroethylene has the characteristic of high temperature resistance, has extremely low friction coefficient, can be used for lubricating, and becomes an ideal coating for easily cleaning the inner layer of the water pipe.

The Teflon (sleeve) bobbin is a special tube prepared by extruding and sintering polytetrafluoroethylene (PTFE is commonly known as Teflon and plastic king) materials, drying, sintering at high temperature, shaping and the like, and has high chemical stability: can bear the action of all strong acids including aqua regia, hydrofluoric acid, concentrated hydrochloric acid, nitric acid, fuming sulfuric acid, organic acid and the like, strong base, strong oxidant, reducing agent and various organic solvents; a low coefficient of friction; the anti-sticking property is excellent, and the inner wall of the pipe is not easy to adhere with colloid and chemicals; excellent aging resistance and can be used outdoors for a long time; and excellent electrical insulation properties: PTFE is a highly non-polar material with good dielectric properties, very high electrical resistance, a dielectric constant of about 2.0, and is the smallest of all electrically insulating materials.

Specifically, the electrical technical parameters of the 4G waterproof antenna provided in this embodiment are as shown in the following table one:

watch 1

Ota (over The air) is a technology for remotely managing SIM card data and applications over The air interface of mobile communication. The application of the OTA technology greatly enhances the utility of mobile communication, not only can provide voice and data services for users, but also can support new service downloading services. Thus, the application and content service provider will not have the limitation of the platform, and thus, develop more personalized applications and services that are close to the needs of the users. After the OTA over-the-air downloading technology is available, users only need to carry out simple operation, and various services on the network can be downloaded into the mobile phone through an OTA mechanism. The OTA can verify the transmitting power and receiving performance of the mobile communication air interface, emphatically test the radiation performance of the whole machine, belongs to a three-dimensional test and can reflect the radiation performance of the whole machine.

Firstly, OTA test characteristics:

the OTA test simulates the transmission scene of a wireless signal of a product in the air, can take the factors such as internal radiation interference of the product, product structure, antenna arrangement factor, radio frequency chip receiving and transmitting algorithm and even human body influence into consideration, is a comprehensive test method for verifying the performance of a wireless product air interface in free space, and is close to the actual use scene of the product.

Secondly, testing the effect:

1. the antenna engineer can evaluate whether the directional pattern is reasonable or not when designing the antenna according to the measured tangent plane pattern.

2. Antenna performance is an important indicator of the quality of wireless terminal communications. The performance of the antenna is improved, the call drop rate of the terminal is reduced, the downloading rate of network data is improved, the use experience of a user is obviously improved, and complaints of the user are reduced.

3. The OTA active complete machine performance test simulates a real use state, and the indexes of the OTA active complete machine performance test measure the actual connection condition between the OTA active complete machine and a base station. (poor overall performance can lead to poor signal, poor voice call and easy disconnection etc.)

4. The OTA test can verify the performance of the whole machine produced by a terminal manufacturer, and is convenient for improving and improving the transmitting power and the receiving sensitivity through various measures.

In the radio frequency performance test of the mobile phone, the test of the radiation performance of the whole mobile phone is more and more concerned in various aspects, and the radiation performance can reflect the final transmission and receiving performance of the mobile phone. There are two basic ways to examine the radiation performance of a mobile phone: one is passive test, and the judgment performance is mainly carried out according to the radiation performance of the antenna; the other is active test, which is to test the radiation power and the receiving sensitivity of the antenna in a special microwave darkroom.

In contrast, passive testing focuses on examining the radiation performance of the mobile phone from the radiation parameters of the antenna, such as gain, efficiency, and directional pattern of the mobile phone antenna. Although the influence of the environment of the whole machine on the performance of the antenna is considered, the passive test data cannot directly reflect the final radiation transmitting power and the receiving sensitivity after the antenna and the whole machine are combined, namely the test data is not intuitive. On the other hand, the active test focuses on investigating the radiation performance of the mobile phone from the aspects of the transmission power and the receiving sensitivity of the whole mobile phone. In a specific microwave darkroom, the transmitting power and the receiving sensitivity of the whole mobile phone in all directions of the three-dimensional space are tested, so that the radiation performance of the whole mobile phone can be more directly reflected. The active test data statistics of the 4G waterproof antenna from the active test angle are shown in the following table two:

Item	Measurement	Band	Channel	Frequency	Total
						1	TRP	FDD_B1(10MHz)	18050	1925	19.81
2	TRP	FDD_B1(10MHz)	18300	1950	20.55
						3	TRP	FDD_B1(10MHz)	18550	1975	20.92
4	TIS(RSSI)	FDD_B1(10MHz)	550	2165	-94.13
						5	TRP	FDD_B3(10MHz)	19250	1715	21.01
6	TRP	FDD_B3(10MHz)	19575	1747.5	19.25
						7	TRP	FDD_B3(10MHz)	19900	1780	19.31
8	TIS(RSSI)	FDD_B3(10MHz)	1900	1875	-83.13
						9	TRP	FDD_B7(10MHz)	20800	2505	17.98
10	TRP	FDD_B7(10MHz)	21100	2535	17.77
						11	TRP	FDD_B7(10MHz)	21400	2565	19.14
12	TIS(RSSI)	FDD_B7(10MHz)	3400	2685	-91.35
						13	TRP	FDD_B8(10MHz)	21500	885	17.22
14	TRP	FDD_B8(10MHz)	21625	897.5	18.02
						15	TRP	FDD_B8(10MHz)	21750	910	18.89
16	TIS(RSSI)	FDD_B8(10MHz)	3750	955	-84.23
						17	TRP	FDD_B20(10MHz)	24200	837	18.73
18	TRP	FDD_B20(10MHz)	24300	847	18.37
						19	TRP	FDD_B20(10MHz)	24400	857	18.04
20	TIS(RSSI)	FDD_B20(10MHz)	6400	816	-76.06
						21	TRP	FDD_B28(10MHz)	27260	708	17.69
22	TRP	FDD_B28(10MHz)	27320	714	17.94
						23	TRP	FDD_B28(10MHz)	27385	720.5	17.18
24	TIS(RSSI)	FDD_B28(10MHz)	9385	775.5	-78.39
						25	TRP	WCDMA_B1	9612	1922.4	19.35
26	TRP	WCDMA_B1	9750	1950	20.55
						27	TRP	WCDMA_B1	9888	1977.6	20.75
28	TIS(RSSI)	WCDMA_B1	10838	2167.6	-106.53
						29	TRP	WCDMA_B8	2712	882.4	16.93
30	TRP	WCDMA_B8	2787	897.4	16.58
						31	TRP	WCDMA_B8	2863	912.6	16.81
32	TIS(RSSI)	WCDMA_B8	3088	957.6	-91.25

watch two

And (3) carrying out a communication efficiency test of the 4G module, wherein the test result is shown in the following table three:

Frequency	Efficiency(％)	Gain.(dBi)
			820MHz	23.66	-1.54
840MHz	24.89	-1.05
			860MHz	25.18	-0.68
880MHz	31.7	0.52
			900MHz	36.06	1.02
920MHz	49.66	1.87
			940MHz	50.23	1.16
960MHz	50.93	0.72
			980MHz	59.43	1.4
1700MHZ	39.63	-0.85
			1800MHZ	41.02	0.45
1900MHZ	33.34	-1.37
			2000MHZ	60.81	1.65
2100MHZ	61.09	1.39
			2200MHZ	75.51	2.95
2300MHZ	63.97	0.52
			2400MHZ	81.28	0.87
2500MHZ	57.68	-0.29
			2600MHZ	56.49	0.82
2700MHZ	46.03	1.4

watch III

The above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.

Claims

1. A4G waterproof antenna, comprising: install the strip PCB board of antenna main part and with the antenna housing of strip PCB board seal inside, wherein:

a through hole for connecting a feeder line is formed in one short side of the strip-shaped PCB, the through hole is widened in the strip-shaped PCB and extends to a welding point of the feeder line and the strip-shaped PCB and then is narrowed to form a first narrow opening, and the first narrow opening is completely sealed through glue and used for sealing the welding point on the inner side of the first narrow opening;

the antenna outer cover seals the strip-shaped PCB inside, and a communicating pipe integrally connected with the antenna outer cover is further arranged on one side, provided with a through hole, of the strip-shaped PCB of the antenna outer cover; and the other side of the communicating pipe is connected with a female needle, and the 4G waterproof antenna is fixed on the 4G equipment through the female needle.

2. The 4G waterproof antenna according to claim 1, wherein a baffle is arranged at the connection part of the communicating pipe and the antenna housing, the baffle is provided with a central hole for passing the feeder, and a waterproof rubber plug for sealing the feeder to the baffle is arranged inside the communicating pipe.

3. The 4G waterproof antenna according to claim 2, wherein the wall of the connecting tube has a thickness forming a second narrow opening inside the connecting tube, the waterproof plug filling the second narrow opening.

4. The 4G waterproof antenna according to claim 1, wherein the antenna housing is flat along the shape of the strip PCB board.

5. The 4G waterproof antenna according to claim 1, wherein the outer wall of the antenna housing is integrally provided with an antenna rubber sleeve by ultrasonic gluing.

6. The 4G waterproof antenna of claim 1, wherein the female needle comprises a feeder hole, the feeder hole is connected with a heat-shrinkable tube sleeve, and the heat-shrinkable tube sleeve extends into the communication tube.

7. The 4G waterproof antenna according to claim 1, wherein the inner wall of the other side of the communication pipe is provided with an internal thread, and the female pin is hitched on the connection pipe through the internal thread by a rivet fixedly connected with one side of the female pin.

8. The 4G waterproof antenna according to claim 1, wherein the other short side of the strip PCB is right-angled to form a right-angled end, and the right-angled end is used for tightly attaching the side of the strip PCB to the inner wall of the antenna housing.

9. The 4G waterproof antenna according to claim 8, wherein a fixing hole is provided on one side of the right-angle end of the strip-shaped PCB for fixing the strip-shaped PCB on the inner wall of the antenna housing through the fixing hole by using a pin glue column.

10. The 4G waterproof antenna of claim 1, wherein the feeder is a Teflon coaxial cable.