Antenna capable of reducing radiation and interphone

Abstract

The utility model discloses an antenna capable of reducing radiation, which comprises an antenna body and an anti-radiation piece, the antenna body comprises an antenna body, the anti-radiation piece is arranged on the antenna body, the anti-radiation piece is positioned at the lower part of the antenna body, the anti-radiation piece is grounded, and the anti-radiation piece is a metal piece. Compared with the prior art, the radiation-proof antenna has the advantages that the radiation-proof piece is arranged on the antenna body and is grounded, so that radiation is shielded through the radiation-proof piece, radiation is reduced, and the SAR does not exceed the standard in an SAR test. In addition, the utility model also provides an interphone adopting the antenna.

Description

Technical Field

[0001] The utility model relates to the technical field of intercoms, and more specifically to an antenna for reducing radiation and an intercom using the antenna. Background Art

[0002] An antenna is a converter that converts guided waves propagating on a transmission line into electromagnetic waves propagating in an unbounded medium, or vice versa; it is a component used in radio equipment to transmit or receive electromagnetic waves.

[0003] Antenna is an important component that reflects the radiation performance of wireless equipment, especially in walkie-talkies. The SAR index (Specific Absorption Rate) is currently called internationally. The SAR index is a ratio of the electromagnetic power absorbed or consumed by the human brain and human body. It is a unit of measurement of how much radio frequency radiation energy is actually absorbed by the body. At present, the SAR test is to measure how much electromagnetic radiation is absorbed by the brain or body through the radio wave energy generated by the wireless communication device through the test equipment. In the walkie-talkie test, the main test method is to measure how much electromagnetic radiation energy is absorbed by the human body model when the walkie-talkie power is at least 1w and the human sweat hand is used to hold the walkie-talkie. There are currently two internationally used standards, one is the European standard 2w / kg, and the other is the American standard 1.6w / kg. The specific meaning is: based on 6 minutes, the electromagnetic radiation energy absorbed by each kilogram of human tissue shall not exceed 2w. However, actual project tests have found that the SAR index of walkie-talkies using conventional antennas is prone to exceeding the standard, especially the higher the power, the more likely it is to exceed the standard. Moreover, there are currently no handheld walkie-talkies on the market that can meet the radiation standards with a power of 5W in SAR experimental tests.

[0004] Based on this, the applicant conducted in-depth research on this basis, which led to the emergence of this case. Utility Model Content

[0005] The utility model aims to provide an antenna capable of reducing radiation and an intercom using the antenna.

[0006] To achieve the above purpose, the solution of the utility model is:

[0007] An antenna for reducing radiation includes an antenna body and an anti-radiation component, wherein the antenna body includes an antenna body, the anti-radiation component is arranged on the antenna body, and the anti-radiation component is located at the lower part of the antenna body, the anti-radiation component is grounded, and the anti-radiation component is a metal component.

[0008] The radiation protection component is a sleeve-shaped structure.

[0009] The antenna body is of a built-in type, or the antenna body is of an external type.

[0010] The antenna body is of a built-in type, and the first end of the radiation protection element extends outside the first end of the antenna body.

[0011] The radiation protection component is provided with an opening corresponding to the first end of the antenna body for the first end of the antenna body to extend out.

[0012] The antenna body is external, a grounding portion is provided at the first end of the antenna body, and the radiation protection component is connected to the grounding portion.

[0013] The first end of the antenna body is sleeved with an insulating sleeve, and the antenna body forms the grounding portion corresponding to the insulating sleeve.

[0014] The radiation protection component is sleeved outside the insulating sleeve, and the radiation protection component and the insulating sleeve are in contact and matched.

[0015] A walkie-talkie includes an intercom body and the antenna, wherein the intercom body includes a circuit board provided with a transmitting and receiving module, and the first end of the anti-radiation component is connected to the circuit board; or the intercom body includes a radiator, and the first end of the anti-radiation component is connected to the radiator.

[0016] The intercom body also includes a shell, and a back clip is detachably mounted on one side of the shell. The thickness of the first clip of the back clip adjacent to the shell is 25-35 mm.

[0017] After adopting the above structure, the utility model provides an antenna for reducing radiation, which has the following beneficial effects: the utility model installs an anti-radiation component on the antenna body, and the anti-radiation component is grounded to shield the radiation through the anti-radiation component, thereby reducing the radiation, and the SAR will not exceed the standard in the SAR test.

[0018] After adopting the above structure, the utility model provides a walkie-talkie with the following beneficial effects: the utility model installs an anti-radiation component on the antenna of the walkie-talkie, so that the anti-radiation component is located between the transmitting and receiving module and the antenna body, that is, the anti-radiation component is located before the transmitting and receiving module receives the signal transmitted by the antenna or before the transmitting and receiving module sends the signal to the antenna body. In this way, the anti-radiation component is used to reduce the radiation of the walkie-talkie, and the SAR index of the walkie-talkie will not exceed the standard in the SAR test, especially when a walkie-talkie with a power exceeding 1w is used, the SAR will still not exceed the standard. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the structure of an antenna according to an embodiment (the antenna housing is omitted).

[0020] Figure 2FIG. 4 is another structural schematic diagram of an antenna body according to an embodiment.

[0021] Figure 3 for Figure 2 Assembly diagram of .

[0022] Figure 4 It is a schematic diagram of the structure of the intercom of Example 2.

[0023] Figure 5 This is a schematic diagram of the interior of the intercom of Example 2.

[0024] Figure 6 This is a schematic diagram of the assembly of the antenna and the circuit board in the second embodiment.

[0025] In the figure:

[0026] 1-antenna body; 11-antenna body; 111-mounting seat; 12-antenna housing; 13-grounding part; 2-anti-radiation component; 21-mounting part; 22-opening; 30-housing; 31-circuit board; 32-heat sink; 4-back clip; DETAILED DESCRIPTION

[0027] In order to further explain the technical solution of the present utility model, the present utility model is described in detail below through specific embodiments.

[0028] Embodiment 1

[0029] An antenna that reduces radiation, such as Figure 1-3 As shown, it includes an antenna body 1 and an anti-radiation element 2. The antenna body 1 includes an antenna body 11. The anti-radiation element 2 is arranged on the antenna body 11 and is located at the lower part of the antenna body 11. The radiation element 2 is a metal element and is grounded. Preferably, the standing wave ratio of the antenna body 1 is less than 1.5DB, and the specific antenna gain is specified according to the antenna gain standard of the handheld walkie-talkie.

[0030] Specifically, the above-mentioned radiation protection component 2 is a sleeve-shaped structure, that is, the radiation protection component 2 is a radiation protection sleeve. The best radiation protection component 2 is a sleeve structure with openings at both ends, wherein the above-mentioned radiation protection component 2 can be a metal component made of conventional metal materials such as copper, aluminum, iron or stainless steel; preferably, due to the characteristics of the copper sleeve, the radiation protection component 2 in this embodiment is a copper sleeve to reduce impedance and further reduce radiation.

[0031] Furthermore, the antenna body 1 in this embodiment is an improvement on the conventional antenna. The antenna body 1 can be built-in or external. The built-in and external antenna bodies 1 are specifically described below.

[0032] like Figure 1As shown, the antenna body 1 is a built-in type, and the antenna body 1 includes an antenna body 11 and an antenna housing 12. The antenna body 11 is an existing conventional antenna body. In this embodiment, the antenna body 11 is an elastic wire as an example for explanation, but it is not limited to the elastic wire; the antenna housing 12 is sleeved outside the antenna body 11, and the first end of the antenna body 11 extends out of the antenna housing 12, so that the subsequent antenna can be assembled thereon when it is part of a wireless device.

[0033] Furthermore, the above-mentioned anti-radiation component 2 is sleeved on the lower part of the antenna body 11, and the first end of the anti-radiation component 2 extends outside the first end of the antenna body 11, so that the first end of the anti-radiation component 2 is connected to the grounding terminal of the wireless device; taking the wireless device as a walkie-talkie as an example for explanation, the first end of the anti-radiation component 2 can be fixedly installed on a circuit board or a radiator of the walkie-talkie with a transmitting and receiving module, so as to achieve grounding, wherein the first end of the anti-radiation component 2 can be fixed in the circuit board or radiator of the walkie-talkie by bolts.

[0034] Furthermore, the above-mentioned radiation protection component 2 surrounds the first end of the antenna body 11, thereby better shielding the antenna and reducing the radiation amount.

[0035] like Figure 2-3 As shown, the above-mentioned antenna body 1 is an external type, and the antenna body 1 includes an antenna body 11 and an antenna shell 12. The antenna body 11 adopts an existing conventional antenna body; the antenna shell 12 is sleeved outside the antenna body 11, and the first end of the antenna body 11 is provided with a grounding part 13, and the first end of the anti-radiation component 2 is connected to the first end of the antenna body 11.

[0036] Furthermore, the first end of the antenna body 11 is provided with an insulating sleeve, which is made of thermoplastic polyurethane elastomer (TPU), and the portion of the antenna body 11 corresponding to the insulating sleeve is formed as a grounding portion 13; in this embodiment, the first end of the above-mentioned radiation protection element 2 is welded to the position of the grounding portion 13 of the antenna body 11, so as to achieve the grounding of the first end of the radiation protection element 2. It should be noted that in the above-mentioned conventional antenna, the first end of the antenna body 11 is integrally connected with a mounting seat 111, and the mounting seat 111 is provided with an external thread section, so as to serve as a part of the subsequent wireless device and be assembled with the corresponding part of the wireless device in a conventional manner, and the interior of the mounting seat 111 is separated by thermoplastic polyurethane elastomer (TPU); wherein, the above-mentioned grounding portion 13 is a part of the conventional antenna and is an existing conventional technology.

[0037] The present embodiment is an antenna for reducing radiation. An anti-radiation component is mounted on the antenna body. The anti-radiation component is grounded to shield the signal when it is transmitted or received, thereby reducing radiation.

[0038] Embodiment 2

[0039] A walkie-talkie, such as Figure 4-6 As shown, the intercom includes an intercom body 3 and an antenna. The antenna is the antenna described in the first embodiment. In this embodiment, the antenna is a built-in antenna.

[0040] Specifically, the above-mentioned intercom body 3 includes a shell 30, a circuit board 31 with a transmitting and receiving module, and a radiator 32. The radiator 32 is installed at a corresponding position of the circuit board 31. The circuit board 31 is installed on the shell 30, and the radiator 32 and the circuit board 31 are both located in the shell 30. Among them, the installation structure and position of the radiator 32 and the circuit board 31 are conventional technologies in existing intercoms, so they are not described in detail.

[0041] It should be noted that the intercom body 3 is the other part of the conventional intercom except the antenna; in normal operation, the first end of the antenna body 11 extends into the shell 30 and is fixedly connected to the circuit board 31.

[0042] Furthermore, the first end of the above-mentioned anti-radiation component 2 and the first end of the antenna body 11 are jointly extended into the shell 30. When expanded, the first end of the antenna body 11 is sleeved with a heat shrink tube insulating material, such as polyethylene (PE) or polypropylene (PP). The above-mentioned structure of the antenna body 11 is the structure of an existing built-in antenna. Then the two are jointly extended into the shell 30, and the first end of the anti-radiation component 2 is fixedly installed on the circuit board 31 to achieve grounding of the anti-radiation component 2. In addition, the anti-radiation component 2 is located between the circuit board 31 corresponding to the transmitting and receiving module and the antenna body 11, so as to shield the signal before the antenna body 11 receives the signal transmitted by the transmitting and receiving module or before the antenna body 11 transmits the signal to the transmitting and receiving module, thereby reducing the radiation amount.

[0043] The mounting structure between the radiation protection element 2 and the circuit board 31 is that the first end of the radiation protection element 2 extends in a direction away from the second end to form a mounting portion 21, and the mounting portion 21 and the circuit board 31 are respectively provided with mounting holes corresponding to each other, and the two corresponding mounting holes are equipped with bolts; during installation, the bolts pass through the two mounting holes, and the free ends of the bolts are located in the mounting holes of the circuit board 31, so as to achieve installation. In addition, other conventional mounting structures such as clamping, plugging or welding can be used between the radiation protection element 2 and the circuit board 31.

[0044] Furthermore, the above-mentioned radiation protection component 2 has an opening 22 corresponding to the position of the first end of the antenna body 11, and the opening 22 is used for the first end of the antenna body 11 to pass through, so as to facilitate the antenna body 11 to pass through, so that the antenna body 11 and the circuit board 31 of the walkie-talkie are connected to each other in a conventional manner.

[0045] Furthermore, the first end of the above-mentioned anti-radiation component 2 can also be installed on the radiator 32 to achieve grounding of the anti-radiation component 2. The installation structure between the anti-radiation component 2 and the radiator 32 is the same as the installation structure between the above-mentioned anti-radiation component 2 and the circuit board 31, so it will not be described in detail.

[0046] Preferably, in the present embodiment, the intercom body 3 also includes a back clip 4, the structure and shape of the back clip 4 are the same as those of the back clip on the conventional intercom. The improvement of the back clip 4 in the present embodiment is that when the back clip 4 is assembled on the shell 30, the clip of the back clip 4 adjacent to the shell 30 is the first clip, and the thickness of the first clip is thickened by 10 mm, that is, the thickness of the first clip is thickened by 10 mm on the basis of the thickness of the conventional first clip, that is, the thickness of the first clip is approximately 25-35 mm. The specific thickening value is set according to the actual situation and is not limited to the above-mentioned thickening value. In this way, since the antenna of the intercom is omnidirectional, the thickening of the first clip can further reduce radiation.

[0047] The present embodiment provides a walkie-talkie using an antenna, which is a built-in antenna. A radiation protection member 2 is sleeved on the lower part of the antenna body. The present embodiment takes the radiation protection member 2 as a copper sleeve as an example for explanation. The first end of the copper sleeve is fixedly mounted on the radiator 2 to achieve grounding of the copper sleeve, and the copper sleeve surrounds the lower part of the antenna body 11, leaving only an opening 22 through which the first end of the antenna body 11 can pass. In this way, the transmission between the transmitting and receiving module integrated on the circuit board 31 and the antenna body 11 needs to pass through the copper sleeve. Due to the effect of the copper sleeve, the walkie-talkie can shield radiation and reduce the amount of radiation. In particular, in the SAR test, the walkie-talkie in the present embodiment can achieve a SAR index that does not exceed the standard when the power is 5W.

[0048] Embodiment 3

[0049] A walkie-talkie, such as Figure 2-3 As shown, the intercom includes an intercom body 3 and an antenna. The antenna is the antenna described in the first embodiment. In this embodiment, the antenna is an external antenna.

[0050] Specifically, the intercom body 3 includes a housing 30, and the antenna mounting base 111 is mounted on the housing 30. The mounting structure between the two is the same as the mounting structure of the existing conventional intercom, so it will not be described in detail.

[0051] It should be noted that the intercom body 3 is the other part of a conventional intercom except the antenna, that is, the intercom body 3 also includes a circuit board 31 with a transmitting and receiving module and a radiator 32. Their installation methods are the same as the installation methods of the circuit board 31 and the radiator 32 in a conventional intercom, so they will not be described in detail.

[0052] Thus, the present embodiment is a walkie-talkie using an external antenna, which is directly mounted on the housing of the walkie-talkie. The external antenna adopts the antenna described in the first embodiment. Thus, taking the radiation protection component 2 as a copper sleeve as an example, the transmission between the transmitting and receiving module integrated on the circuit board 31 and the antenna body 11 needs to pass through the copper sleeve. Due to the effect of the copper sleeve, the walkie-talkie can shield radiation and reduce the amount of radiation. In particular, in the SAR test, the walkie-talkie in the present embodiment can achieve a SAR index of 5W without exceeding the standard.

[0053] In the present invention, when the walkie-talkie with the above structure is used for SAR testing, the walkie-talkie described in the first embodiment is used as an example for explanation. When the actual power value of the walkie-talkie is 37dbm (30dbm=1W), the radiation standard can still be met. Therefore, when the power of the walkie-talkie is large, the radiation absorption amount is also small. It is worth mentioning that the above SAR test has been certified by the SAR test, and the power value is reflected in the FCC certificate.

[0054] The above is only a preferred embodiment of the present invention, and all equivalent changes and modifications made within the scope of the claims of the present utility model shall fall within the scope of the claims of the present utility model.

Claims

1. An antenna for reducing radiation, characterized in that: The invention comprises an antenna body and an anti-radiation component, wherein the antenna body comprises an antenna body, the anti-radiation component is arranged on the antenna body, and the anti-radiation component is located at the lower part of the antenna body, the anti-radiation component is grounded, and the anti-radiation component is a metal component.

2. The antenna for reducing radiation according to claim 1, characterized in that: The radiation protection component is a sleeve-shaped structure.

3. The antenna for reducing radiation according to claim 1, characterized in that: The antenna body is of a built-in type, or the antenna body is of an external type.

4. The antenna for reducing radiation according to claim 3, characterized in that: The antenna body is of a built-in type, and the first end of the radiation protection element extends outside the first end of the antenna body.

5. The antenna for reducing radiation according to claim 4, characterized in that: The radiation protection component is provided with an opening corresponding to the first end of the antenna body for the first end of the antenna body to extend out.

6. The antenna for reducing radiation according to claim 3, characterized in that: The antenna body is external, a grounding portion is provided at the first end of the antenna body, and the radiation protection component is connected to the grounding portion.

7. The antenna for reducing radiation according to claim 6, characterized in that: The first end of the antenna body is sleeved with an insulating sleeve, and the antenna body forms the grounding portion corresponding to the insulating sleeve.

8. The antenna for reducing radiation according to claim 7, characterized in that: The radiation protection component is sleeved outside the insulating sleeve, and the radiation protection component and the insulating sleeve are in contact and matched.

9. A walkie-talkie, characterized in that: It comprises an intercom body and an antenna as described in any one of claims 1 to 8, wherein the intercom body comprises a circuit board provided with a transmitting and receiving module, and the first end of the anti-radiation component is connected to the circuit board; or, the intercom body comprises a radiator, and the first end of the anti-radiation component is connected to the radiator.

10. The intercom according to claim 9, characterized in that: The intercom body also includes a shell, and a back clip is detachably mounted on one side of the shell. The thickness of the first clip of the back clip adjacent to the shell is 25-35 mm.

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