Vehicle-mounted communication antenna with two-stage transmitting coil

Abstract

The utility model discloses a vehicle-mounted communication antenna with two stages of transmitting coils, and belongs to the technical field of electronic communication. The technical problems that a vehicle-mounted communication antenna is not easy to disassemble and assemble and signal emission is not stable enough are solved. According to the technical scheme, the antenna is characterized by comprising an antenna oscillator, an upper coil, a lower coil and a base, the upper coil and the lower coil are spirally distributed and arranged on the antenna oscillator at intervals, a connector is arranged at the lower end of the antenna oscillator, the connector is fixed to the base, and the upper coil and the lower coil are fixed to the antenna oscillator. And the strength is higher and the installation is more convenient.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of electronic communication, in particular to a vehicle-mounted communication antenna with two-stage transmitting coils. BACKGROUND

[0002] At present, a vehicle-mounted satellite communication antenna is disclosed in Chinese Patent No. CN221102414U, which comprises a radiation layer, a first dielectric body, a metal body and a second dielectric body which are sequentially stacked, the metal body comprises a stacked metal disc body and a metal column body, a plurality of feed probes are fixed on the metal disc body, each feed probe penetrates through the first dielectric body and is connected to the radiation layer, the second dielectric body is in the form of a ring-shaped column body structure, and the second dielectric body is embedded in the metal column body.

[0003] The vehicle-mounted communication antenna has the problems of inconvenient disassembly and unstable transmission signals. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the above technical problems and shortcomings, the application provides a vehicle-mounted communication antenna with two-stage transmitting coils, which has the advantages of high signal transmission stability and suitability for vehicle-mounted use.

[0005] To achieve the above object and other related objects, the application adopts the following technical solution:

[0006] The vehicle-mounted communication antenna with two-stage transmitting coils comprises an antenna oscillator, an upper coil, a lower coil and a base, the upper coil and the lower coil are spirally distributed and spaced apart on the antenna oscillator, the lower end of the antenna oscillator is provided with a connector, the connector is fixed on the base, and the upper coil and the lower coil are fixed on the antenna oscillator.

[0007] Preferably, the spiral direction, pitch and diameter of the upper coil and the lower coil are the same, the length of the upper coil is 105+ / -5 mm, and the length of the lower coil is 177+ / -5 mm.

[0008] Preferably, the matching frequency band of the upper coil is 144 MHz, and the matching frequency band of the lower coil is 430 MHz.

[0009] Preferably, each of the two ends of the upper coil and the lower coil is provided with a connecting section, the connecting section is provided with a solder pad, the solder pad has a semicircular notch, and the solder pad is soldered on the antenna oscillator.

[0010] Preferably, the base is a magnetic base.

[0011] Preferably, the antenna oscillator comprises a main body part and a reduced diameter part, the lower end of the main body part is provided with the reduced diameter part, and the diameter of the reduced diameter part is smaller than the diameter of the main body of the antenna oscillator.

[0012] In summary, the present application has at least one of the following beneficial technical effects:

[0013] 1. Dual-band with 360° omnidirectional transmission,

[0014] 2. Higher strength through welding fixation;

[0015] 3. Magnetic base is adopted, installation is more convenient;

[0016] 4. Small standing wave ratio, stable and reliable performance. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic diagram of an embodiment of the present application;

[0018] Figure 2 is a schematic diagram of the base structure;

[0019] Figure 3 is a schematic diagram of the welding structure of the connecting section assembly.

[0020] Explanation of reference numerals of main components:

[0021] 1. Antenna oscillator; 11. Main body part; 12. Reduced diameter part; 13. Joint; 2. Upper coil; 3. Lower coil; 4. Base; 5. Connecting section; 51. Solder pad; 52. Notch. DETAILED DESCRIPTION

[0022] The embodiments of the present application will be described in detail below with specific reference to specific examples. Those skilled in the art can easily understand other advantages and effects of the present application from the disclosure herein. The present application can also be implemented or applied in different specific embodiments, and various modifications or changes can be made to the details herein based on different views and applications without departing from the spirit of the present application. It should be noted that the following examples and features in the examples can be combined with each other without conflict.

[0023] It should be noted that the diagrams provided in the following examples only illustrate the basic concept of the present application in a schematic manner, and the diagrams only show the components related to the present application, not the number, shape and size of the components when actually implemented. The actual implementation of each component can be changed arbitrarily in terms of shape, number and proportion, and the layout pattern of the components may also be more complex.

[0024] The specific embodiments of the present application will be further described below with reference to the accompanying drawings.

[0025] Embodiments of the present application disclose a vehicle-mounted communication antenna with two-stage transmitting coils, referring to

[0026] The embodiments of the present application disclose a vehicle-mounted communication antenna with two-stage transmitting coils, referring to Figure 1 and Figure 2 The antenna vibrator 1, the upper coil 2, the lower coil 3 and the base 4 are shown. The upper coil 2 and the lower coil 3 are spirally distributed and spaced apart on the antenna vibrator 1, the lower end of the antenna vibrator 1 is provided with a joint 13, the joint 13 is assembled on the base 4 in a threaded fixed manner, and the upper coil 2 and the lower coil 3 are fixed on the antenna vibrator 1. The base 4 is a magnetic base. The magnetic base is a structure known in the art, and therefore will not be explained again. It has the function of using the magnetic fixing function to facilitate the disassembly and assembly of the antenna vibrator 1, and achieves the purpose of vehicle-mounted assembly.

[0027] The spiral direction, pitch and diameter of the upper coil 2 and the lower coil 3 are the same. The length of the upper coil 2 is 105±5mm, and the length of the lower coil 3 is 177±5mm. The total length on the antenna vibrator 1 is 770±10mm.

[0028] The two-stage transmitting coils can improve signal uniformity: through the design of the two-stage transmitting coils, a more uniform electromagnetic field distribution can be generated in a larger area, thereby improving the coverage range and uniformity of the signal.

[0029] The two-stage transmitting coils can enhance signal strength: the two-stage transmitting coils can work simultaneously and transmit signals in different directions, thereby enhancing the strength and coverage range of the signal as a whole.

[0030] The two-stage transmitting coils can improve signal quality: by reducing the influence of multipath fading, the two-stage transmitting coils can improve the stability and reliability of the signal, reduce signal loss and unevenness.

[0031] In the present scheme, the matching frequency band of the upper coil 2 is 144MHz, and the matching frequency band of the lower coil 3 is 430MHz. The 144MHz frequency band belongs to the VHF frequency band, which is suitable for short-distance communication, and the signal is mainly transmitted by direct wave line of sight. The 430MHz frequency band belongs to the UHF frequency band, and the reflection and refraction phenomenon is more obvious than the VHF frequency band, but the air attenuation is also larger, which is not suitable for long-distance communication. When a long cable is used, it will cause a large attenuation to the signal. This dual-band design enables the radio equipment to communicate in two different frequency bands, thereby expanding the communication range and flexibility.

[0032] Referring to Figure 1 and Figure 3As shown, two ends of each of the upper coil 2 and the lower coil 3 are provided with a connecting section 5, the connecting section 5 is provided with a solder pad 51, the solder pad 51 has a semicircular notch 52, and the solder pad 51 is welded on the antenna vibrator 1. Through the welding fixation, the strength is higher.

[0033] The antenna vibrator 1 comprises a main body part 11 and a reduced diameter part 12, the lower end of the main body part 11 is provided with the reduced diameter part 12, and the diameter of the reduced diameter part 12 is smaller than the diameter of the main body of the antenna vibrator 1. Figure 1 As shown, the diameter of the main body part 11 is 7.2±0.5mm, and the diameter of the reduced diameter part 12 is 4.8±0.5mm. It should be noted that “,” in the figure represents a decimal point. The present scheme has a 360° omnidirectional emission dual-band, a small standing wave ratio, and stable and reliable performance.

[0034] The above embodiments only exemplarily illustrate the principles and effects of the present application, and are not used to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A vehicle-mounted communication antenna with two-stage transmitting coils, characterized in that, The antenna includes an antenna element (1), an upper coil (2), a lower coil (3), and a base (4). The upper coil (2) and the lower coil (3) are spirally distributed and spaced apart on the antenna element (1). A connector (13) is provided at the lower end of the antenna element (1), and the connector (13) is fixed on the base (4). The upper coil (2) and the lower coil (3) are fixed on the antenna element (1).

2. A vehicle-mounted communication antenna with two-stage transmitting coils according to claim 1, characterized in that, The upper coil (2) and the lower coil (3) have the same helical direction, pitch and diameter. The length of the upper coil (2) is 105±5mm and the length of the lower coil (3) is 177±5mm.

3. A vehicle-mounted communication antenna with two-stage transmitting coils according to claim 2, characterized in that, The matching frequency band of the upper coil (2) is 144MHz, and the matching frequency band of the lower coil (3) is 430MHz.

4. A vehicle-mounted communication antenna with two-stage transmitting coils according to claim 1, characterized in that, The upper coil (2) and the lower coil (3) are provided with connecting sections (5) at their respective ends. The connecting sections (5) are provided with pads (51). The pads (51) have semi-circular slots (52). The pads (51) are soldered onto the antenna vibrator (1).

5. A vehicle-mounted communication antenna with two-stage transmitting coils according to claim 1, characterized in that, The base (4) is a magnetic base.

6. A vehicle-mounted communication antenna with two-stage transmitting coils according to claim 1, characterized in that, The antenna vibrator (1) includes a main body (11) and a reduced diameter part (12). The reduced diameter part (12) is provided at the lower end of the main body (11). The diameter of the reduced diameter part (12) is smaller than the diameter of the main body of the antenna vibrator (1).

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