Vehicle-mounted antenna

Abstract

The utility model provides a vehicle-mounted antenna, which relates to the technical field of antennas and comprises a shell, a circuit board is arranged in the shell, an antenna assembly is arranged on one side of the circuit board and comprises a satellite communication antenna, a satellite internet antenna and a satellite navigation antenna, and the satellite communication antenna and the satellite internet antenna are stacked. The circuit structure is arranged on the circuit board and connected with the antenna assembly, the circuit structure comprises a power supply circuit, a filter, a low noise amplifier and a power amplifier, and the low noise amplifier is connected with the receiving end of the satellite communication antenna and the receiving end of the satellite internet antenna. The power amplifier is connected with the transmitting end of the satellite communication antenna and the transmitting end of the satellite internet antenna; the power amplifier shielding case and the active circuit shielding case are connected with the circuit board; the problems that in the prior art, a vehicle-mounted antenna is single in function, poor in integration level and high in vehicle-mounted arrangement difficulty, and the signal quality of an antenna of a passive structure is limited are solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to antenna technical field, more specifically, relate to a kind of vehicle-mounted antenna. BACKGROUND

[0002] The current traditional positioning antenna integration is low, generally single GNSS antenna box, single satellite antenna box, single star network antenna box.In addition, vehicle-mounted antenna power supply and active power amplifier control are more complex, and the size is not easy to control, most of satellite and star network antennas use passive structure in vehicle-mounted antenna box.With the improvement of vehicle-mounted demand integration, the function increases, and the positioning antenna requires open sky, so many antennas increase the difficulty of vehicle-mounted arrangement. SUMMARY

[0003] The utility model discloses a kind of vehicle-mounted antennas to solve the problems of single function, poor integration, high vehicle-mounted arrangement difficulty and limited passive structure antenna signal quality in prior art.

[0004] To achieve the above object, the utility model provides a kind of vehicle-mounted antenna, comprising:

[0005] Shell, circuit board is arranged in the shell, the side of the circuit board is provided with antenna assembly, the antenna assembly includes satellite communication antenna, satellite internet antenna and satellite navigation antenna, the satellite communication antenna and the satellite internet antenna are laminated arrangement;

[0006] Circuit structure, the circuit structure is arranged on the circuit board and is connected with the antenna assembly, and the circuit structure includes power supply circuit, filter, low-noise amplifier and power amplifier, the receiving end of the satellite communication antenna is connected with the receiving end of the satellite internet antenna by the low-noise amplifier, and the transmitting end of the satellite communication antenna is connected with the transmitting end of the satellite internet antenna by the power amplifier.

[0007] Optionally, the satellite communication antenna includes satellite receiving antenna and satellite transmitting antenna, the satellite internet antenna includes star network receiving antenna and star network transmitting antenna, and the satellite navigation antenna is GNSS antenna.

[0008] Optionally, the satellite receiving antenna, the satellite transmitting antenna, the star network receiving antenna and the star network transmitting antenna are all ceramic antennas, and form four-layer laminated arrangement.

[0009] Optionally, the star network receiving antenna, the satellite receiving antenna, the satellite transmitting antenna and the star network transmitting antenna are sequentially arranged from bottom to top, and the GNSS antenna and the star network receiving antenna are arranged in the same layer.

[0010] Optionally, the polarization directions of the satellite network receiving antenna, the GNSS antenna, the Tengtong receiving antenna, the Tengtong transmitting antenna and the satellite network transmitting antenna are left-handed, right-handed, left-handed, left-handed and left-handed respectively.

[0011] Optionally, the satellite network receiving antenna and the GNSS antenna are connected with two inputs of the first phase synthesizer through two conductive pins, and the Tengtong receiving antenna, the Tengtong transmitting antenna and the satellite network transmitting antenna are connected with the second phase synthesizer, the third phase synthesizer and the fourth phase synthesizer respectively through two conductive pins.

[0012] Optionally, the satellite network receiving antenna is connected with a filter and a low noise amplifier through the first phase synthesizer, the satellite network transmitting antenna is connected with a power amplifier through the fourth phase synthesizer, and the low noise amplifier and the power amplifier are connected with a duplexer.

[0013] Optionally, the Tengtong receiving antenna is connected with a filter and a low noise amplifier through the third phase synthesizer, the Tengtong transmitting antenna is connected with a power amplifier through the second phase synthesizer, and the low noise amplifier and the power amplifier are connected with a duplexer.

[0014] Optionally, the GNSS antenna is connected with a filter and a low noise amplifier through the first phase synthesizer.

[0015] The vehicle-mounted antenna has the advantages that: the vehicle-mounted antenna integrates the circuit board and the antenna assembly with the satellite communication antenna, the satellite internet antenna and the satellite navigation antenna in the shell, is rich in functions, has high integration degree due to the stacked arrangement, greatly reduces the shell size and the vehicle-mounted arrangement difficulty, and the circuit structure has the power supply circuit, the filter, the low noise amplifier and the power amplifier, the receiving end of the satellite communication antenna, the receiving end of the satellite internet antenna and the satellite navigation antenna are all connected with the low noise amplifier, the transmitting end of the satellite communication antenna and the transmitting end of the satellite internet antenna are all connected with the power amplifier, an active structure is formed, a bidirectional active amplifier design with high integration degree is realized in a true sense, signal insertion loss caused by an excessively long wire harness when the vehicle-mounted antenna is arranged in the vehicle can be effectively compensated, and the signal quality is improved.

[0016] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which like reference characters refer to like parts throughout the several views, and wherein the exemplary embodiments of the present application are shown.

[0018] Figure 1 and Figure 2 An external structure schematic diagram of a vehicle-mounted antenna is shown according to an embodiment of the present application.

[0019] Figure 3 An exploded structure schematic diagram of a vehicle-mounted antenna is shown according to an embodiment of the present application.

[0020] Figure 4 A structure schematic diagram of an antenna assembly of a vehicle-mounted antenna is shown according to an embodiment of the present application.

[0021] Figure 5 A pin connection schematic diagram of a vehicle-mounted antenna is shown according to an embodiment of the present application.

[0022] Figure 6 A circuit schematic diagram of a satellite network receiving antenna and a satellite network transmitting antenna of a vehicle-mounted antenna is shown according to an embodiment of the present application.

[0023] Figure 7 A circuit schematic diagram of a GNSS antenna of a vehicle-mounted antenna is shown according to an embodiment of the present application.

[0024] BRIEF DESCRIPTION OF DRAWINGS

[0025] 1, circuit board; 2, antenna assembly; 3, power supply circuit; 4, filter; 5, low noise amplifier; 6, power amplifier; 7, satellite receiving antenna; 8, satellite transmitting antenna; 9, satellite network receiving antenna; 10, satellite network transmitting antenna; 11, wire harness connector assembly; 12, waterproof rubber ring; 13, upper shell; 14, lower shell; 15, screw; 16, conductive needle; 17, GNSS antenna; 18, first phase synthesizer; 19, second phase synthesizer; 20, third phase synthesizer; 21, fourth phase synthesizer; 22, load; 23, duplexer; 24, ceramic dielectric filter; 25, fixed attenuator; 26, voltage stabilizer; 27, power amplifier shield; 28, active circuit shield; 29, coaxial cable. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present application will be described in more detail below. Although the preferred embodiments of the present application are described below, it is understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present application can be more thoroughly and completely conveyed to those skilled in the art.

[0027] As Figures 1 to 3The utility model provides a vehicle antenna, including:

[0028] The shell is internally provided with a circuit board 1, one side of the circuit board 1 is provided with an antenna assembly 2, the antenna assembly 2 includes a satellite communication antenna, a satellite internet antenna and a satellite navigation antenna, and the satellite communication antenna and the satellite internet antenna are laminatedly arranged;

[0029] The circuit structure is arranged on the circuit board 1 and connected with the antenna assembly 2, and the circuit structure includes a power supply circuit 3, a filter 4, a low-noise amplifier 5 and a power amplifier 6, the low-noise amplifier 5 is connected with the receiving end of the satellite communication antenna and the receiving end of the satellite internet antenna, and the power amplifier 6 is connected with the transmitting end of the satellite communication antenna and the transmitting end of the satellite internet antenna;

[0030] The power amplifier shielding cover 27 and the active circuit shielding cover 28 are connected with the circuit board 1, the power amplifier shielding cover 27 is arranged on the outer side of each power amplifier 6, and the active circuit shielding cover 28 is arranged on the outer side of the entire circuit structure.

[0031] Specifically, to solve the problems of single function, poor integration, high difficulty in vehicle arrangement and limited signal quality of the passive structure of the vehicle antenna in the prior art, the utility model provides a vehicle antenna, which integrates the circuit board 1 and the antenna assembly 2 with the satellite communication antenna, the satellite internet antenna and the satellite navigation antenna in the shell, is rich in function, has high integration due to the laminated arrangement, greatly reduces the size of the shell and the difficulty in vehicle arrangement, and simultaneously, the circuit structure has the power supply circuit 3, the filter 4, the low-noise amplifier 5 and the power amplifier 6, the receiving end of the satellite communication antenna, the receiving end of the satellite internet antenna and the satellite navigation antenna are all connected with the low-noise amplifier 5, the transmitting end of the satellite communication antenna and the transmitting end of the satellite internet antenna are all connected with the power amplifier 6, an active structure is formed, a high-integration two-way active amplifier design is realized in a true sense, signal insertion loss caused by an excessively long wire harness due to the arrangement of the vehicle antenna in the vehicle can be effectively compensated, and the signal quality is improved.

[0032] Further, each power amplifier shielding cover 27 is arranged on the outer side of one power amplifier 6, and the active circuit shielding cover 28 is arranged on the outer side of the entire circuit structure on the circuit board 1, so that the shielding effect is guaranteed and the anti-interference capability is improved.

[0033] Optionally, the satellite communication antenna includes a Tian Tong receiving antenna 7 and a Tian Tong transmitting antenna 8, the satellite internet antenna includes a star network receiving antenna 9 and a star network transmitting antenna 10, and the satellite navigation antenna is a GNSS antenna.

[0034] Specifically, the Tianxi antenna is an antenna for satellite communication, in particular, an antenna for the Tianxi satellite system, which is a mobile communication satellite system independently developed by China, mainly used to provide satellite telephone, data transmission and other services; the Xingwang antenna is an antenna for satellite Internet, in particular, an antenna for Starlink and other low earth orbit (LEO) satellite Internet systems; the Tianxi satellite system is a high orbit satellite system, and the Xingwang satellite system is a low orbit satellite system; the vehicle-mounted antenna integrates the Tianxi antenna, the Xingwang antenna and the GNSS navigation antenna in the shell, expands the function of the vehicle-mounted antenna, and improves the integration.

[0035] In the embodiment, mounting ears are arranged on both sides of the shell, mounting holes are arranged on the mounting ears, and the mounting ears are arranged in the spoiler of the automobile; as shown in Figure 3 The circuit board 1 is connected with the wire harness connector assembly 11, a waterproof rubber ring 1712 is arranged between the wire harness of the coaxial cable 29 and the via hole on the shell, the shell includes an upper shell 13 and a lower shell 14 which are sealingly connected, and the circuit board 1 is fixed in the shell by screws 15.

[0036] Optionally, the Tianxi receiving antenna 7, the Tianxi transmitting antenna 8, the Xingwang receiving antenna 9 and the Xingwang transmitting antenna 10 are all ceramic antennas, and form a four-layer stacked arrangement.

[0037] Specifically, the antenna assembly 2 is a four-layer stacked ceramic antenna, and the four ceramic antennas form a pyramid-shaped structure from bottom to top.

[0038] In the embodiment, the Tianxi receiving antenna 7, the Tianxi transmitting antenna 8, the Xingwang receiving antenna 9 and the Xingwang transmitting antenna 10 each include a substrate and a silver layer antenna arranged on the upper side of the substrate, each silver layer antenna is connected with two conductive pins 16, and the conductive pins 16 pass through the substrate layer from top to bottom and are connected with the circuit structure on the circuit board 1.

[0039] Optionally, the Xingwang receiving antenna 9, the Tianxi receiving antenna 7, the Tianxi transmitting antenna 8 and the Xingwang transmitting antenna 10 are arranged in sequence from bottom to top, and the GNSS antenna is arranged on the same layer as the Xingwang receiving antenna 9.

[0040] Specifically, as shown in Figure 4 The upper side of the substrate in the lowermost layer is further provided with a silver layer antenna of the GNSS antenna, and the silver layer antenna of the GNSS antenna shares two conductive pins 16 with the silver layer antenna of the Xingwang receiving antenna 9.

[0041] Further, in order to save space and ensure effective isolation and decoupling between layers, the satellite network receiving antenna 9 and the satellite network transmitting antenna 10 with more similar frequencies are arranged in the lowermost layer and the uppermost layer respectively, and the satellite receiving antenna 7 and the satellite transmitting antenna 8 with larger frequency difference are arranged between the two.

[0042] Optionally, the polarization directions of the satellite network receiving antenna 9, the GNSS antenna, the satellite receiving antenna 7, the satellite transmitting antenna 8 and the satellite network transmitting antenna 10 are left-handed, right-handed, left-handed, left-handed and left-handed respectively.

[0043] Specifically, the satellite network receiving antenna 9 and the GNSS antenna on the same substrate adopt different polarization directions to ensure signal quality.

[0044] Optionally, the satellite network receiving antenna 9 and the GNSS antenna are connected to the two input ends of the first phase synthesizer 18 through two conductive pins 16, and the satellite receiving antenna 7, the satellite transmitting antenna 8 and the satellite network transmitting antenna 10 are respectively connected to the second phase synthesizer 19, the third phase synthesizer 20 and the fourth phase synthesizer 21 through two conductive pins 16.

[0045] Specifically, as shown in Figure 5 each phase synthesizer includes four pins, wherein the first pin and the second pin are input pins, and the third pin and the fourth pin are output pins; the two conductive pins 16 connected to the satellite network receiving antenna 9 and the GNSS antenna are connected to the first pin and the second pin of the first phase synthesizer 18, and the third pin and the fourth pin of the first phase synthesizer 18 respectively output the left-handed satellite network receiving antenna 9 signal and the right-handed GNSS antenna signal; the two conductive pins 16 of the satellite receiving antenna 7, the satellite transmitting antenna 8 and the satellite network transmitting antenna 10 are respectively connected to the first pin and the second pin of the second phase synthesizer 19, the third phase synthesizer 20 and the fourth phase synthesizer 21, and the third pin of the second phase synthesizer 19, the third phase synthesizer 20 and the fourth phase synthesizer 21 respectively outputs the left-handed satellite receiving antenna 7 signal, the satellite transmitting antenna 8 signal and the satellite network transmitting antenna 10 signal, and the fourth pin of the satellite receiving antenna 7, the satellite transmitting antenna 8 and the satellite network transmitting antenna 10 is connected to the load 22.

[0046] In the embodiment, the load 22 is a 50 ohm resistor.

[0047] In the embodiment, the phase synthesizer is a hybrid phase synthesizer based on a 3dB bridge.

[0048] Optionally, the satellite network receiving antenna 9 is connected with the filter 4 and the low noise amplifier 5 through the first phase synthesizer 18, the satellite network transmitting antenna 10 is connected with the power amplifier 6 through the fourth phase synthesizer 21, and the low noise amplifier 5 and the power amplifier 6 are connected with the duplexer 23.

[0049] Specifically, as shown in Figure 6 the fourth pin of the first phase synthesizer 18 is connected with a SAW filter 4, a low noise amplifier 5 (LNA) and a duplexer 23 in sequence through the wirings on the circuit board 1, the duplexer 23 is further connected with a power amplifier 6 (PA) and the fourth pin of the fourth phase synthesizer 21 in sequence through the wirings, the output end of the duplexer 23 is connected with the coaxial cable 29, and the power supply circuit 3 is connected with the active components such as the low noise amplifier 5 and the power amplifier 6 through the wirings to supply power for them.

[0050] In the embodiment, a post-stage SAW filter 4 is further connected between the low noise amplifier 5 and the duplexer 23.

[0051] In the embodiment, a post-stage SAW filter 4 and a fixed attenuator 25 are further connected between the power amplifier 6 and the duplexer 23, and a ceramic dielectric filter 24 is further arranged between the power amplifier 6 and the first phase synthesizer 18.

[0052] In the embodiment, a resistor and a voltage stabilizer 26 are further connected on the power supply wiring.

[0053] Optionally, the satellite network receiving antenna 9 is connected with the filter 4 and the low noise amplifier 5 through the first phase synthesizer 18, the satellite network transmitting antenna 10 is connected with the power amplifier 6 through the fourth phase synthesizer 21, and the low noise amplifier 5 and the power amplifier 6 are connected with the duplexer 23.

[0054] Specifically, the circuit connection structure of the satellite network receiving antenna 9 and the satellite network transmitting antenna 10 is the same as that of the satellite network receiving antenna 9 and the satellite network transmitting antenna 10.

[0055] Optionally, the satellite network receiving antenna 9 is connected with the filter 4 and the low noise amplifier 5 through the first phase synthesizer 18, the satellite network transmitting antenna 10 is connected with the power amplifier 6 through the fourth phase synthesizer 21, and the low noise amplifier 5 and the power amplifier 6 are connected with the duplexer 23.

[0056] Specifically, as shown in Figure 7 the fourth pin of the first phase synthesizer 18 is connected with a SAW filter 4, a low noise amplifier 5 (LNA) and a duplexer 23 in sequence through the wirings on the circuit board 1, the duplexer 23 is further connected with a power amplifier 6 (PA) and the fourth pin of the fourth phase synthesizer 21 in sequence through the wirings, the output end of the duplexer 23 is connected with the coaxial cable 29, and the power supply circuit 3 is connected with the active components such as the low noise amplifier 5 and the power amplifier 6 through the wirings to supply power for them.

[0057] In the embodiment, the SAW filter 4 and the low noise amplifier 5 are both provided with two, one SAW filter 4 is arranged between the upstream low noise amplifier 5 and the first phase synthesizer 18, and the other SAW filter 4 is connected between the two low noise amplifiers 5, forming a design of double low noise amplifiers 5 and double filters 4, reducing out-of-band interference and improving gain multiple to compensate for line loss.

[0058] In the embodiment, the power supply line is also connected with a resistor and a voltage stabilizer 26.

[0059] In conclusion, the vehicle-mounted antenna provided by the utility model adopts a multi-layer ceramic antenna design framework, integrates a satellite network transmitting antenna, a satellite network receiving antenna and a GNSS antenna, and the transmitting antennas are all connected with power amplifiers, and the receiving antennas are all connected with low noise amplifiers, bidirectional active amplification, which can effectively compensate for signal insertion loss problems caused by excessively long wire harnesses, and the multiple antennas are highly integrated, the size of the ceramic antenna on the lowest layer can be 60*60*6mm, the size of each layer above decreases in turn, and the total thickness of the ceramic antenna is 22.5mm, which has a good positive effect on the application and arrangement of the vehicle-mounted antenna, so that the size of the shell can be 75*75*45mm, and the vehicle-mounted antenna can be conveniently installed in the spoiler.

[0060] The above has described the embodiments of the utility model, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A vehicle antenna, characterized by, The utility model relates to a satellite communication antenna, satellite internet antenna and satellite navigation antenna are arranged in the shell, and the satellite communication antenna, satellite internet antenna and satellite navigation antenna are connected with the circuit structure, and the satellite communication antenna, satellite internet antenna and satellite navigation antenna are connected with the power amplifier and low noise amplifier. The utility model relates to a satellite communication antenna, satellite internet antenna and satellite navigation antenna are arranged in the shell, and the satellite communication antenna, satellite internet antenna and satellite navigation antenna are connected with the circuit structure, and the satellite communication antenna, satellite internet antenna and satellite navigation antenna are connected with the power amplifier and low noise amplifier. The utility model relates to a satellite communication antenna, satellite internet antenna and satellite navigation antenna are arranged in the shell, and the satellite communication antenna, satellite internet antenna and satellite navigation antenna are connected with the circuit structure, and the satellite communication antenna, satellite internet antenna and satellite navigation antenna are connected with the power amplifier and low noise amplifier. The utility model relates to a satellite communication antenna, satellite internet antenna and satellite navigation antenna are arranged in the shell, and the satellite communication antenna, satellite internet antenna and satellite navigation antenna are connected with the circuit structure, and the satellite communication antenna, satellite internet antenna and satellite navigation antenna are connected with the power amplifier and low noise amplifier.

2. The antenna according to claim 1, wherein The utility model relates to a satellite communication antenna, satellite internet antenna and satellite navigation antenna are arranged in the shell, and the satellite communication antenna, satellite internet antenna and satellite navigation antenna are connected with the circuit structure, and the satellite communication antenna, satellite internet antenna and satellite navigation antenna are connected with the power amplifier and low noise amplifier.

3. The antenna according to claim 2, wherein The utility model relates to a satellite communication antenna, satellite internet antenna and satellite navigation antenna are arranged in the shell, and the satellite communication antenna, satellite internet antenna and satellite navigation antenna are connected with the circuit structure, and the satellite communication antenna, satellite internet antenna and satellite navigation antenna are connected with the power amplifier and low noise amplifier.

4. The antenna according to claim 3, wherein The utility model relates to a satellite communication antenna, satellite internet antenna and satellite navigation antenna are arranged in the shell, and the satellite communication antenna, satellite internet antenna and satellite navigation antenna are connected with the circuit structure, and the satellite communication antenna, satellite internet antenna and satellite navigation antenna are connected with the power amplifier and low noise amplifier.

5. The antenna according to claim 4, wherein The utility model relates to a satellite communication antenna, satellite internet antenna and satellite navigation antenna are arranged in the shell, and the satellite communication antenna, satellite internet antenna and satellite navigation antenna are connected with the circuit structure, and the satellite communication antenna, satellite internet antenna and satellite navigation antenna are connected with the power amplifier and low noise amplifier.

6. The antenna according to claim 5, wherein The utility model relates to a satellite communication antenna, satellite internet antenna and satellite navigation antenna are arranged in the shell, and the satellite communication antenna, satellite internet antenna and satellite navigation antenna are connected with the circuit structure, and the satellite communication antenna, satellite internet antenna and satellite navigation antenna are connected with the power amplifier and low noise amplifier.

7. The antenna according to claim 6, wherein The utility model relates to a satellite communication antenna, satellite internet antenna and satellite navigation antenna are arranged in the shell, and the satellite communication antenna, satellite internet antenna and satellite navigation antenna are connected with the circuit structure, and the satellite communication antenna, satellite internet antenna and satellite navigation antenna are connected with the power amplifier and low noise amplifier.

8. The antenna according to claim 6, wherein ​ 9. The antenna according to claim 6, wherein ​

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