Shark fin antenna

Abstract

The utility model provides a shark fin antenna, which relates to the technical field of automobile antennas and comprises a bottom plate and a shell which are detachably connected. The satellite call antenna unit is arranged on the upper side of the bottom plate, the satellite call antenna unit comprises a satellite call antenna body and a first printed circuit board, and the satellite call antenna body is an active ceramic antenna; the first antenna unit and the second antenna unit are arranged on the upper side of the bottom plate and are different from the satellite communication antenna in antenna function; the problem that more antenna units with other functions are difficult to place in the shark fin antenna with the satellite call antenna unit is solved.

Description

Technical Field

[0001] This utility model belongs to the field of automotive antenna technology, and more specifically, relates to a shark fin antenna. Background Technology

[0002] Currently, mainstream shark fin antennas, after housing a satellite communication antenna, typically only support one other type of antenna due to the limited internal space. However, with the increasing functional requirements of vehicle antennas, the number of antennas has also increased. Therefore, how to fit more antennas inside a single shark fin antenna has become a worthy research topic. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a shark fin antenna that solves the problem of placing more antenna elements with other functions within a shark fin antenna that already has a satellite communication antenna element.

[0004] To achieve the above objectives, this utility model provides a shark fin antenna, comprising:

[0005] A base plate and a housing, wherein the base plate and the housing are detachably connected;

[0006] A satellite communication antenna unit is disposed on the upper side of the base plate. The satellite communication antenna unit includes a satellite communication antenna body and a first printed circuit board. The satellite communication antenna body is an active ceramic antenna.

[0007] The first antenna unit and the second antenna unit are disposed on the upper side of the base plate and have different antenna functions from the satellite communication antenna.

[0008] Optionally, the satellite communication antenna unit is located between the first antenna unit and the second antenna unit.

[0009] Optionally, the first antenna unit and the second antenna unit are respectively a navigation antenna unit and a radio antenna unit.

[0010] Optionally, one end of the base plate is a pointed tip, and gradually widens towards the other end of the base plate, forming an extended end at the other end of the base plate. The navigation antenna unit is disposed near the pointed tip, the radio antenna unit is disposed near the extended end, and the satellite communication antenna is disposed between the navigation antenna unit and the radio antenna unit.

[0011] Optionally, the first printed circuit board is provided with a first low-noise amplifier.

[0012] Optionally, a first mounting post is provided on the upper side of the base plate, the first printed circuit board is provided on the upper side of the first mounting post, a first shielding cover is provided on the lower side of the first printed circuit board, and the first shielding cover is provided around the first low noise amplifier.

[0013] Optionally, the navigation antenna unit includes a navigation antenna body and a second printed circuit board. The second printed circuit board is provided with a second low-noise amplifier. A second mounting post is provided on the upper side of the base plate. The second printed circuit board is located on the upper side of the second mounting post. A second shielding cover is provided on the lower side of the second printed circuit board. The second shielding cover is located around the second low-noise amplifier.

[0014] Optionally, the radio antenna unit includes an antenna element and a third printed circuit board, the third printed circuit board having an amplifier circuit printed on it, and a third mounting post is provided on the upper side of the base plate, the third printed circuit board being disposed on the upper side of the third mounting post.

[0015] Optionally, a rubber pad is provided on the upper side of the base plate, and the rubber pad is located between the base plate and the outer shell.

[0016] Optionally, the outer shell is shark fin shaped, with the end of the outer shell near the tip being lower than the end of the outer shell near the wide end.

[0017] This utility model provides a shark fin antenna, the advantages of which are: the satellite communication antenna unit inside the shark fin antenna includes a first printed circuit board and a satellite communication antenna body disposed on the first printed circuit board. The satellite communication antenna body adopts an active ceramic antenna. This design reduces the size of the satellite communication antenna unit, so that it occupies less space inside the base plate and the shell. As a result, other functional antenna units, including the first antenna unit and the second antenna unit, can be arranged in the space inside the base plate and the shell, thus meeting the market demand for shark fin antennas to carry multiple antenna units with multiple functions.

[0018] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0019] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally represent like parts.

[0020] Figure 1 An exploded view of the internal structure of a shark fin antenna according to one embodiment of the present invention is shown.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Base plate; 2. Satellite communication antenna body; 3. First printed circuit board; 4. First shielding cover; 5. Navigation antenna body; 6. Second printed circuit board; 7. Second shielding cover; 8. Antenna vibrator; 9. Third printed circuit board; 10. Rubber pad. Detailed Implementation

[0023] Preferred embodiments of the present invention will now be described in more detail. While preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0024] like Figure 1 As shown, this utility model provides a shark fin antenna, comprising:

[0025] Base plate 1 and outer shell, with base plate 1 and outer shell being detachably connected;

[0026] The satellite communication antenna unit is located on the upper side of the base plate 1. The satellite communication antenna unit includes the satellite communication antenna body 2 and the first printed circuit board 3. The satellite communication antenna body 2 is an active ceramic antenna.

[0027] The first antenna unit and the second antenna unit are located on the upper side of the base plate 1, and their antenna functions are different from those of the satellite communication antenna.

[0028] Specifically, to address the problem of placing more antenna units with other functions within a shark fin antenna that already has a satellite communication antenna unit, the satellite communication antenna unit provided by this invention includes a first printed circuit board 3 and a satellite communication antenna body 2 disposed on the first printed circuit board 3. The satellite communication antenna body 2 adopts an active ceramic antenna. This design reduces the size of the satellite communication antenna unit, thus occupying less space in the base plate 1 and the interior of the housing. This allows for the placement of other functional antenna units, including the first antenna unit and the second antenna unit, within the space of the base plate 1 and the interior of the housing, meeting the market demand for shark fin antennas to carry multiple antenna units with various functions.

[0029] Optionally, the satellite communication antenna unit is located between the first antenna unit and the second antenna unit.

[0030] Specifically, by using an active ceramic antenna, the overall size of the satellite communication antenna unit is reduced, allowing it to be placed in the middle of the base plate 1 and the outer shell of the shark fin antenna, leaving space at both ends for the placement of other functional antenna units, such as antenna units with vibrators that require more height space.

[0031] Optionally, the first antenna element and the second antenna element are respectively a navigation antenna element and a radio antenna element.

[0032] Specifically, the integration of the navigation antenna unit and the radio antenna unit provides navigation and radio functions, making the shark fin antenna a three-in-one integrated antenna for navigation, satellite communication, and radio.

[0033] Optionally, one end of the base plate 1 is a pointed tip, and gradually widens towards the other end of the base plate 1, forming an extended end at the other end of the base plate 1. The navigation antenna unit is located near the pointed tip, the radio antenna unit is located near the extended end, and the satellite communication antenna is located between the navigation antenna unit and the radio antenna unit.

[0034] Specifically, based on the size characteristics of the navigation antenna unit and the radio antenna unit, the navigation antenna unit and the radio antenna unit are respectively positioned near the tip and near the expansion end, to meet the space requirements for the arrangement of the radio antenna unit's vibrator and to make reasonable use of the internal space of the shark fin antenna.

[0035] Optionally, the first printed circuit board 3 is provided with a first low-noise amplifier.

[0036] Specifically, the satellite communication antenna body 2, which uses an active ceramic antenna, requires an external power supply, and a low-noise amplifier (LNA) and / or power amplifier (PA) are set on its first printed circuit board 3, which can effectively enhance the signal strength in a weak signal environment, thereby improving communication quality and data transmission rate.

[0037] In this embodiment, a cable is threaded through the middle of the base plate 1. The cable includes a power line, a signal line, and a ground line.

[0038] Optionally, a first mounting post is provided on the upper side of the base plate 1, a first printed circuit board 3 is provided on the upper side of the first mounting post, a first shielding cover 4 is provided on the lower side of the first printed circuit board 3, and the first shielding cover 4 is provided around the first low noise amplifier.

[0039] Specifically, the first printed circuit board 3 can be mounted on the upper side of the first mounting post by the first screw, and the first shielding cover 4 is connected to the first printed circuit board 3 and connected to the ground wire, which can shield the first low noise amplifier and reduce electromagnetic interference.

[0040] In this embodiment, the first printed circuit board 3 is rectangular, and four first mounting posts are provided.

[0041] Optionally, the navigation antenna unit includes a navigation antenna body 5 and a second printed circuit board 6. The second printed circuit board 6 is provided with a second low-noise amplifier. A second mounting post is provided on the upper side of the base plate 1. The second printed circuit board 6 is located on the upper side of the second mounting post. A second shielding cover 7 is provided on the lower side of the second printed circuit board 6. The second shielding cover 7 is located around the second low-noise amplifier.

[0042] Specifically, the second printed circuit board 6 can be mounted on the upper side of the second mounting post by the second screw, and the second shielding cover 7 is connected to the second printed circuit board 6 and grounded, which can shield the second low noise amplifier and reduce electromagnetic interference.

[0043] In this embodiment, the second printed circuit board 6 is trapezoidal, and three second mounting posts are provided.

[0044] In this embodiment, both the first shielding cover 4 and the second shielding cover 7 are sheet metal stamping parts.

[0045] Optionally, the radio antenna unit includes an antenna element 8 and a third printed circuit board 9, the third printed circuit board 9 having an amplifier circuit printed on it, and a third mounting post is provided on the upper side of the base plate 1, with the third printed circuit board positioned on the upper side of the third mounting post.

[0046] Specifically, the third printed circuit board 9 can be mounted on the upper side of the third mounting post by the third screw. The radio antenna unit receives the radio antenna signal through the antenna vibrator 8 and is connected to the signal line through the third printed circuit board 9.

[0047] In this embodiment, the third printed circuit board 9 is rectangular, and four third mounting posts are provided.

[0048] Optionally, a rubber pad 10 is provided on the upper side of the base plate 1, and the rubber pad 10 is located between the base plate 1 and the outer shell.

[0049] Specifically, the rubber pad 10 is configured to provide a sealing effect for the connection between the base plate 1 and the outer shell.

[0050] In this embodiment, the base plate 1 and the rubber pad 10 are formed by die casting and rubber injection molding processes.

[0051] Alternatively, the shell is shark fin shaped, with the end of the shell near the tip lower than the end of the shell near the flared end.

[0052] Specifically, the outer shell is shaped like a shark fin and can be fastened to the base plate 1 using a fourth screw.

[0053] In this embodiment, the outer shell is an injection molded part.

[0054] In this embodiment, the Tiantong antenna achieves signal transmission and reception in this frequency band through left-hand circular polarization. The received signal is amplified by the first low-noise amplifier for host positioning, and the transmitted signal is transmitted through a duplexer for interactive use. The GPS / BDS signal from the navigation antenna is received by the ANTENNA (dielectric antenna). The received GPS / BDS signal is sent to the pre-amplifier circuit of the second low-noise amplifier through a matching circuit. After pre-amplification, the GPS / BDS signal is capacitively coupled to a filter frequency selection circuit to select the GPS / BDS signal. It is then capacitively coupled to the post-amplifier circuit. After post-amplification, the GPS / BDS signal is transmitted through the signal transmission line at the output of the amplifier board to the output terminal, and output through the OUT port (connector) to provide GPS / BDS signal for navigation. The radio reception signal is received by the antenna element of the AM / FM antenna and transmitted to the signal input terminal of the amplifier. The FM signal is received by the AM / FM antenna through the signal transmission line. The FM signal is selected by the FM frequency selection circuit and then enters the next stage common-emitter low-noise amplifier circuit for amplification. The amplified signal is then sent to the signal output terminal of the amplifier after passing through the FM output frequency selection circuit and impedance matching circuit. The AGC circuit samples the output FM signal to determine the amplitude of the output signal. When the amplitude of the sampled signal is higher than a certain limit (90dBuV), the AGC circuit is activated to attenuate the input signal, thereby ensuring the stability of the output signal. At the same time, the AM signal is transmitted to the signal input terminal of the antenna amplifier. After passing through the AM frequency selection circuit, the AM signal is selected and then enters the next stage low-noise field-effect transistor amplifier circuit for amplification. The amplified signal is then sent to the signal output terminal of the amplifier after passing through the AM output frequency selection and matching circuit. Here, the FM and AM signals merge and are transmitted to the signal input port of the radio to provide the radio frequency signal for the radio.

[0055] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A shark fin antenna, characterized in that, include: A base plate and a housing, wherein the base plate and the housing are detachably connected; A satellite communication antenna unit is disposed on the upper side of the base plate. The satellite communication antenna unit includes a satellite communication antenna body and a first printed circuit board. The satellite communication antenna body is an active ceramic antenna. The first antenna unit and the second antenna unit are disposed on the upper side of the base plate and have different antenna functions from the satellite communication antenna.

2. The shark fin antenna according to claim 1, characterized in that, The satellite communication antenna unit is located between the first antenna unit and the second antenna unit.

3. The shark fin antenna according to claim 2, characterized in that, The first antenna unit and the second antenna unit are respectively a navigation antenna unit and a radio antenna unit.

4. The shark fin antenna according to claim 3, characterized in that, One end of the base plate is a pointed tip, and it gradually widens towards the other end of the base plate, forming an extended end. The navigation antenna unit is located near the pointed tip, the radio antenna unit is located near the extended end, and the satellite communication antenna is located between the navigation antenna unit and the radio antenna unit.

5. The shark fin antenna according to claim 1, characterized in that, The first printed circuit board is equipped with a first low-noise amplifier.

6. The shark fin antenna according to claim 5, characterized in that, A first mounting post is provided on the upper side of the base plate, the first printed circuit board is provided on the upper side of the first mounting post, a first shielding cover is provided on the lower side of the first printed circuit board, and the first shielding cover is provided around the first low noise amplifier.

7. The shark fin antenna according to claim 3, characterized in that, The navigation antenna unit includes a navigation antenna body and a second printed circuit board. The second printed circuit board is provided with a second low-noise amplifier. A second mounting post is provided on the upper side of the base plate. The second printed circuit board is located on the upper side of the second mounting post. A second shielding cover is provided on the lower side of the second printed circuit board. The second shielding cover is located around the second low-noise amplifier.

8. The shark fin antenna according to claim 3, characterized in that, The radio antenna unit includes an antenna vibrator and a third printed circuit board. The third printed circuit board has an amplifier circuit printed on it. A third mounting post is provided on the upper side of the base plate, and the third printed circuit board is located on the upper side of the third mounting post.

9. The shark fin antenna according to claim 1, characterized in that, A rubber pad is provided on the upper side of the base plate, and the rubber pad is located between the base plate and the outer shell.

10. The shark fin antenna according to claim 4, characterized in that, The outer shell is shark fin shaped, and the end of the outer shell near the tip is lower than the end of the outer shell near the flared end.

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