T-shaped waveguide power divider and communication equipment
By setting rounded corners and curved surfaces in the T-type waveguide power divider to perform gradual linear impedance transformation, the problems of narrow bandwidth and space occupation are solved, and the effects of signal splitting and low reflection loss are achieved.
Patent Information
- Application Number
- CN202423006406.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-05
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-05
AI Technical Summary
Traditional T-type waveguide power dividers have narrow bandwidth and high return loss, and setting up a stepped waveguide impedance converter will take up a lot of space.
Design a T-type waveguide power divider, which uses rounded corners on the inner and end faces of the main body and branches of the wave divider, and combines the arc surface to perform gradual linear impedance transformation, thereby reducing space occupation and increasing bandwidth.
Signal splitting was achieved, reducing the space ratio of the T-waveguide power divider and maintaining low reflection loss in the 71-86GHz range, thereby improving system efficiency and signal quality.
Smart Images
Figure CN223680376U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to wireless communication technical field, especially a kind of T waveguide power divider and communication equipment. BACKGROUND
[0002] In the field of wireless communication, power divider is often used to divide signal power into at least two signals according to a certain proportion, so as to realize the simultaneous output of multiple signals, and also ensure the amplitude characteristics and phase angle characteristics of multiple signals. Waveguide power divider is widely used due to its low insertion loss and high power capacity, and the bandwidth of T waveguide power divider directly determines the bandwidth of the antenna. The traditional T waveguide power divider has narrow bandwidth and high return loss.
[0003] In the prior art, in order to increase the bandwidth, a stepped waveguide impedance transformer is usually provided to increase the bandwidth, but the stepped waveguide impedance transformer occupies a large space. UTILITY MODEL CONTENT
[0004] The utility model provides a kind of T waveguide power divider for increasing bandwidth.
[0005] In the first aspect, the utility model provides a kind of T waveguide power divider, comprising:
[0006] input waveguide;
[0007] wave-dividing waveguide, the wave-dividing waveguide includes wave-dividing main body, first branch and second branch, one end of the wave-dividing main body is connected to the end of the input waveguide, the other end of the wave-dividing main body is connected to the first branch and the second branch arranged at intervals;And
[0008] output waveguide, the output waveguide includes first output waveguide and second output waveguide extending along the width direction of the input waveguide, the first output waveguide is connected to one end of the first branch away from the wave-dividing main body, and the second output waveguide is connected to one end of the second branch away from the wave-dividing main body;
[0009] Wherein, the connection position of the inner side surface of the first branch and the wave-dividing main body and the connection position of the inner side surface of the second branch and the wave-dividing main body are both provided as round corners.
[0010] Optionally, the end surface of the wave-dividing main body for connecting the first branch and the second branch is provided with an arc surface, and the arc surface is connected between the inner side surface of the first branch and the inner side surface of the second branch.
[0011] Optionally, the width of the input waveguide is less than the width of the wave-dividing main body, and the connection position of the two opposite side surfaces of the input waveguide and the wave-dividing main body is provided as a round corner.
[0012] Optionally, the connecting positions of the two side surfaces of the wave dividing main body and the end surface of the input waveguide are both provided with rounded corners.
[0013] Optionally, the connecting positions of the inner side surface of the first branch and the first sub-output waveguide and the inner side surface of the second branch and the second sub-output waveguide are both provided with rounded corners.
[0014] Optionally, the connecting positions of the outer side surface of the first branch and the first sub-output waveguide and the outer side surface of the second branch and the second sub-output waveguide are both provided with rounded corners.
[0015] In a second aspect, the utility model also provides a kind of communication equipment, comprising:
[0016] Shell, the shell is provided with the first cavity and the second cavity of intercommunication;
[0017] Radio frequency module, the radio frequency module is set in the first cavity, and the radio frequency module includes the T-shaped waveguide power divider as described above;
[0018] Control module, it is set in the second cavity, and with the radio frequency module electric connection;And
[0019] Power module, it is set in the second cavity, and with the control module electric connection.
[0020] Optionally, the radio frequency module further includes:
[0021] Baseband board, it is set in the bottom of the first cavity, and the baseband board with the control module electric connection;
[0022] Millimeter wave radio frequency board, it is spaced apart from the baseband board and is electrically connected with the baseband board;
[0023] Bent waveguide, it is electrically connected with the millimeter wave radio frequency board, and the bent waveguide connects the input waveguide far from one end of the wave dividing waveguide;
[0024] First antenna, it is connected with the first sub-output waveguide far from one end of the first branch;And
[0025] Second antenna, it is connected with the second sub-output waveguide far from one end of the second branch.
[0026] Optionally, the end of the first antenna far from the first sub-output waveguide and the end of the second antenna far from the second sub-output waveguide are both provided with rectangle.
[0027] Optionally, the two side walls of the shell opposite each other are both provided with radome, and the two radomes are respectively opposite the first antenna and the second antenna.
[0028] The application provides a T-shaped waveguide power divider and a communication device, and at least has the following beneficial effects compared with the prior art:
[0029] The T-shaped waveguide power divider provided by the embodiment of the application can divide electromagnetic waves into two paths for output, thereby realizing signal branching; compared with the prior art, the thickness of each part of the T-shaped waveguide power divider provided by the embodiment of the application is substantially the same, and the connection positions of the inner side surface of the first branch and the end surface of the wave dividing waveguide and the connection positions of the inner side surface of the second branch and the end surface of the wave dividing waveguide are both provided as rounded corners, thereby increasing the bandwidth while avoiding increasing the space ratio of the T-shaped waveguide power divider. BRIEF DESCRIPTION OF DRAWINGS
[0030] In the following, the utility model will be described in more detail based on the embodiments and with reference to the drawings.
[0031] Figure 1 is a structural schematic diagram of the T-shaped waveguide power divider provided by the embodiment of the application;
[0032] Figure 2 is a simulation result diagram provided by the embodiment of the application;
[0033] Figure 3 is an assembly diagram of the communication device provided by the embodiment of the application;
[0034] Figure 4 is an exploded view of the communication device provided by the embodiment of the application.
[0035] Reference signs:
[0036] 1-T-shaped waveguide power divider;
[0037] 11-input waveguide;
[0038] 12-wave dividing waveguide; 121-wave dividing main body; 1211-curved surface; 122-first branch; 123-second branch;
[0039] 13-output waveguide; 131-first sub-output waveguide; 132-second sub-output waveguide;
[0040] 2-communication device;
[0041] 21-housing; 211-first cavity; 212-second cavity; 213-antenna cover; 214-bottom plate; 215-enclosure; 216-cover plate;
[0042] 22-radio frequency module; 221-baseband plate; 222-millimeter wave radio frequency plate; 223-bent waveguide; 224-first antenna; 225-second antenna;
[0043] 23 - control module;
[0044] 24 - power module;
[0045] 25 - server motherboard;
[0046] 26 - mounting plate. DETAILED DESCRIPTION
[0047] The utility model will be further described below with reference to the drawings.
[0048] Please refer to Figure 1 , first, the utility model embodiment provides a T type waveguide power divider 1, including input waveguide 11, waveguide 12 and output waveguide 13.Waveguide 12 includes waveguide main body 121, first branch 122 and second branch 123, one end of waveguide main body 121 is connected to the end of input waveguide 11, and the other end of waveguide main body 121 is connected to the first branch 122 and the second branch 123 arranged at intervals.Output waveguide 13 includes first sub-output waveguide 131 and second sub-output waveguide 132 extending along the width direction of input waveguide 11, first sub-output waveguide 131 is connected to one end of first branch 122 away from waveguide main body 121, and second sub-output waveguide 132 is connected to one end of second branch 123 away from waveguide main body 121.Wherein, the connecting position of the inner side surface of first branch 122 and waveguide main body 121 and the connecting position of the inner side surface of second branch 123 and waveguide main body 121 are all set as round corners.
[0049] It should be noted that the shape of the T type waveguide power divider 1 provided by the embodiments of the present application can be as Figure 1 shown, and can also be other shapes and have an internal passage as Figure 1 shown inside, which is not limited here.
[0050] The waveguide power divider is a kind of passive device used in wireless communication system, and its main function is to evenly distribute the input electromagnetic wave power to multiple output ports.Therefore, the shape of T type waveguide power divider 1, i.e.the shape of waveguide power divider, is roughly the shape of letter "T".
[0051] The T-shaped waveguide power divider 1 provided by the embodiment of the utility model includes an input waveguide 11 which is roughly rectangular, two ends of the input waveguide 11 in the length direction are a first input end and a first output end respectively. One end of a wave dividing main body 121 of a wave dividing waveguide 12 is connected to the first output end of the input waveguide 11, and a first branch 122 and a second branch 123 of the wave dividing waveguide 12 are arranged at the other end of the wave dividing main body 121 along the width direction of the input waveguide 11. Wherein, the first branch 122 and the second branch 123 are also roughly rectangular, and the length direction of the first branch 122 and the length direction of the second branch 123 are roughly the same as the length direction of the input waveguide 11. The shape of a first sub-output waveguide 131 and a second sub-output waveguide 132 of an output waveguide 13 can also be roughly rectangular, wherein, two ends of the first sub-output waveguide 131 in the length direction thereof are a second input end and a second output end respectively, the second input end is connected to one end of the first branch 122 away from the wave dividing main body 121, and the length direction of the first sub-output waveguide 131 can be roughly the same as the width direction of the input waveguide 11; similarly, two ends of the second sub-output waveguide 132 in the length direction thereof are a third input end and a third output end respectively, the third input end is connected to one end of the second branch 123 away from the wave dividing main body 121, the length direction of the second sub-output waveguide 132 can be roughly the same as the width direction of the input waveguide 11, and the extension direction of the second sub-output waveguide 132 is roughly opposite to the extension direction of the first sub-output waveguide 131, that is to say, the second input end and the third input end are adjacent to each other, the second output end is located on the side of the second input end away from the third input end, and the third output end is located on the side of the third input end away from the second input end.
[0052] It should be noted that the thickness of the input waveguide 11, the wave dividing waveguide 12 and the output waveguide 13 is roughly the same, and the thickness direction of the input waveguide 11, the wave dividing waveguide 12 and the output waveguide 13 is also roughly the same.
[0053] The working principle of the embodiment is as follows:
[0054] The electromagnetic wave enters the first input end of the input waveguide 11, and after entering the wave dividing main body 121 of the wave dividing waveguide 12 through the first output end, the electromagnetic wave is divided into two paths and enters the first branch 122 and the second branch 123 respectively, the electromagnetic wave transported through the first branch 122 enters the second input end of the first sub-output waveguide 131 and is finally output through the second output end, and the electromagnetic wave transported through the second branch 123 enters the third input end of the second sub-output waveguide 132 and is finally output through the third output end.
[0055] In addition, the inner side of the first branch 122 refers to a side facing the second branch 123 in the width direction of the first branch 122, and the inner side of the second branch 123 refers to a side facing the first branch 122 in the width direction of the second branch 123. The connection position of the inner side of the first branch 122 and the end surface of the wave dividing main body 121 away from the input waveguide 11 and the connection position of the inner side of the second branch 123 and the end surface of the wave dividing main body 121 away from the input waveguide 11 are both provided with a rounded corner, which can perform a gradual line impedance transformation, thereby increasing the operating bandwidth.
[0056] In summary, the T-shaped waveguide power divider 1 provided by the embodiment of the present application can divide electromagnetic waves into two paths for output, thereby realizing signal branching. Compared with the stepped waveguide usually provided in the prior art, the thickness of each part of the T-shaped waveguide power divider 1 provided by the embodiment of the present application is substantially the same, and the connection position of the inner side of the first branch 122 and the end surface of the wave dividing waveguide 12 and the connection position of the inner side of the second branch 123 and the end surface of the wave dividing waveguide 12 are both provided with a rounded corner, which can increase the bandwidth while reducing the space ratio occupied by the T-shaped waveguide power divider 1.
[0057] Please continue to refer to Figure 1 In some embodiments, the end surface of the wave dividing main body 121 for connecting the first branch 122 and the second branch 123 is provided with an arc surface 1211 connected between the inner side of the first branch 122 and the inner side of the second branch 123.
[0058] In the embodiment, the end surface of the end of the wave dividing main body 121 away from the input waveguide 11 is provided with an arc surface 1211 connected between the inner side of the first branch 122 and the inner side of the second branch 123, the arc surface 1211 is recessed relative to the end surface and faces the input waveguide 11, and the arc surface 1211 can be substantially parallel to the thickness direction of the wave dividing main body 121.
[0059] The arc surface 1211 can be smoothly connected with the rounded corner at the connection position between the inner side of the first branch 122 and the end surface of the wave dividing main body 121 away from the input waveguide 11, that is, the rounded corner at the connection position between the inner side of the first branch 122 and the end surface of the wave dividing main body 121 away from the input waveguide 11 can be regarded as a part of the arc surface 1211. Similarly, the arc surface 1211 can be smoothly connected with the rounded corner at the connection position between the inner side of the second branch 123 and the end surface of the wave dividing main body 121 away from the input waveguide 11, that is, the rounded corner at the connection position between the inner side of the second branch 123 and the end surface of the wave dividing main body 121 away from the input waveguide 11 can be regarded as a part of the arc surface 1211.
[0060] The waveguide body 121 is used to connect the end faces of the first branch 122 and the second branch 123, and an arc surface 1211 is formed between the inner side face of the first branch 122 and the inner side face of the second branch 123. The gradual line impedance transformation can be performed, and the working bandwidth is further increased.
[0061] In some other embodiments, the inner side face of the first branch 122 and the inner side face of the second branch 123 can also be a plane.
[0062] Please continue to refer to Figure 1 In some embodiments, the width of the input waveguide 11 is smaller than the width of the waveguide body 121, and the two opposite side faces of the input waveguide 11 are provided with a round corner at the connection position of the input waveguide 11 and the waveguide body 121.
[0063] It can be understood that the width of the input waveguide 11 is the dimension of the input waveguide 11 in the width direction, the width of the waveguide body 121 is the dimension of the waveguide body 121 in the width direction, and the width direction of the input waveguide 11 is substantially the same as the width direction of the waveguide body 121.
[0064] In the embodiment, the width of the input waveguide 11 is smaller than the width of the waveguide body 121, and the first output end of the input waveguide 11 is substantially connected to the center position of the end face of the waveguide body 121 away from the first branch 122 and the second branch 123. The two opposite side faces of the input waveguide 11 in the width direction are provided with a round corner at the connection position of the input waveguide 11 and the waveguide body 121, and the gradual line impedance transformation can be performed, and the working bandwidth is further increased.
[0065] In some other embodiments, the width of the input waveguide 11 can be equal to the width of the waveguide body 121.
[0066] Please continue to refer to Figure 1 In some embodiments, the two side faces of the waveguide body 121 are provided with a round corner at the connection position of the waveguide body 121 and the end face of the input waveguide 11.
[0067] The width direction of the waveguide body 121 is substantially the same as the width direction of the input waveguide 11.
[0068] The two side faces of the waveguide body 121 are two side faces of the waveguide body 121 in the width direction, and the two side faces of the waveguide body 121 are provided with a round corner at the connection position of the waveguide body 121 and the end face of the input waveguide 11, and the gradual line impedance transformation can be performed, and the working bandwidth is further increased.
[0069] In some other embodiments, the connecting positions of the two side surfaces of the wave splitting body 121 and the end surface of the input waveguide 11 are all set as right angles.
[0070] For further information Figure 1 In some embodiments, the connecting positions of the inner side surface of the first branch 122 and the first sub-output waveguide 131 and the inner side surface of the second branch 123 and the second sub-output waveguide 132 are all set as round angles.
[0071] The width direction of the first branch 122, the width direction of the second branch 123 and the width direction of the input waveguide 11 are substantially the same, and the length direction of the first sub-output waveguide 131, the length direction of the second sub-output waveguide 132 and the width direction of the input waveguide 11 are also substantially the same, that is, the width direction of the first sub-output waveguide 131, the width direction of the second sub-output waveguide 132 and the length direction of the input waveguide 11 are substantially the same.
[0072] The inner side surface of the first branch 122 refers to the side surface facing the second branch 123 in the width direction of itself. The first sub-output waveguide 131 has a first side surface and a second side surface opposite to each other in the width direction, the first side surface is closer to the input waveguide 11 than the second side surface, the inner side surface of the first branch 122 is connected to the second side surface, the outer side surface of the first branch 122 is connected to the first side surface, and the connecting position of the inner side surface of the first branch 122 and the first sub-output waveguide 131 set as a round angle refers to the connecting position of the inner side surface of the first branch 122 and the second side surface set as a round angle.
[0073] Similarly, the inner side surface of the second branch 123 refers to the side surface facing the first branch 122 in the width direction of itself. The second sub-output waveguide 132 has a third side surface and a fourth side surface opposite to each other in the width direction, the third side surface is closer to the input waveguide 11 than the fourth side surface, the inner side surface of the second branch 123 is connected to the fourth side surface, the outer side surface of the second branch 123 is connected to the third side surface, and the connecting position of the inner side surface of the second branch 123 and the second sub-output waveguide 132 set as a round angle refers to the connecting position of the inner side surface of the second branch 123 and the fourth side surface set as a round angle.
[0074] The connecting positions of the inner side surface of the first branch 122 and the first sub-output waveguide 131 and the inner side surface of the second branch 123 and the second sub-output waveguide 132 are all set as round angles, which can perform a gradual line impedance transformation, thereby further increasing the operating bandwidth.
[0075] In some other embodiments, the connecting positions of the inner side surface of the first branch 122 and the first sub-output waveguide 131 and the inner side surface of the second branch 123 and the second sub-output waveguide 132 are all set as right angles.
[0076] Please continue to refer to Figure 1 In some embodiments, the outer side of the first branch 122 and the connection position of the first sub-output waveguide 131, and the outer side of the second branch 123 and the connection position of the second sub-output waveguide 132 are all set to be rounded corners.
[0077] The width direction of the first branch 122, the width direction of the second branch 123, and the width direction of the input waveguide 11 are substantially the same, and the length direction of the first sub-output waveguide 131 and the length direction of the second sub-output waveguide 132 are also substantially the same as the width direction of the input waveguide 11, that is, the width direction of the first sub-output waveguide 131 and the width direction of the second sub-output waveguide 132 are substantially the same as the length direction of the input waveguide 11.
[0078] The inner side of the first branch 122 refers to the side facing the second branch 123 in the width direction of itself. The first sub-output waveguide 131 has a first side and a second side opposite in the width direction, the first side is closer to the input waveguide 11 than the second side, the inner side of the first branch 122 is connected to the second side, the outer side of the first branch 122 is connected to the first side, and the connection position of the inner side of the first branch 122 and the second side of the first sub-output waveguide 131 is set to be a rounded corner, which means that the connection position of the inner side of the first branch 122 and the second side is set to be a rounded corner.
[0079] Similarly, the inner side of the second branch 123 refers to the side facing the first branch 122 in the width direction of itself. The second sub-output waveguide 132 has a third side and a fourth side opposite in the width direction, the third side is closer to the input waveguide 11 than the fourth side, the inner side of the second branch 123 is connected to the fourth side, the outer side of the second branch 123 is connected to the third side, and the connection position of the inner side of the second branch 123 and the fourth side of the second sub-output waveguide 132 is set to be a rounded corner, which means that the connection position of the inner side of the second branch 123 and the fourth side is set to be a rounded corner.
[0080] The outer side of the first branch 122 and the connection position of the first sub-output waveguide 131, and the outer side of the second branch 123 and the connection position of the second sub-output waveguide 132 are all set to be rounded corners, which can perform a gradual line impedance transformation, thereby further increasing the operating bandwidth.
[0081] In other embodiments, the outer side of the first branch 122 and the connection position of the first sub-output waveguide 131, and the outer side of the second branch 123 and the connection position of the second sub-output waveguide 132 are all set to be right angles.
[0082] Please refer to Figure 2According to the simulation result, the T-shaped waveguide power divider 1 provided in the embodiment has an S11 of less than -15 dB in the frequency range of 71-86 GHz. It should be noted that S11 is an important parameter in scattering parameters, and the smaller the S11 value, the lower the reflection loss.
[0083] When the T-shaped waveguide power divider 1 has an S11 of less than -15 dB in the frequency range of 71-86 GHz, it indicates that the T-shaped waveguide power divider 1 provided in the embodiment has a low reflection loss, which helps to improve the overall efficiency of the system and reduce unnecessary energy waste. In addition, a lower S11 value helps to reduce distortion and distortion of signals during transmission, thereby improving the overall quality of the signals. Furthermore, a lower S11 value can reduce the interference between reflected waves and incident waves to affect the stability of the system.
[0084] Please refer to Figure 3 and Figure 4 , in a second aspect, the utility model embodiment still provides a kind of communication equipment 2, including shell 21, radio frequency module 22, control module 23 and power module 24.Shell 21 is provided with the first cavity 211 and second cavity 212 of intercommunication.The radio frequency module 22 is arranged in the first cavity 211, and the radio frequency module 22 includes the T-shaped waveguide power divider 1 as described above.The control module 23 is arranged in the second cavity 212, and is electrically connected with radio frequency module 22.Power module 24 is arranged in the second cavity 212, and is electrically connected with control module 23.
[0085] It should be noted that the communication equipment 2 can be assembled in rail transit, or can be assembled in other vehicles, which is not limited herein.
[0086] Wherein, the shell 21 includes bottom plate 214, coaming 215 and cover plate 216.The bottom plate 214 is substantially rectangular structure, and one end of the coaming 215 is substantially arranged around the edge of the bottom plate 214 and enclosed to form a containing cavity, and the other end of the coaming 215 is assembled with the cover plate 216 to close the containing cavity.The shell 21 further includes first partition plate and second partition plate arranged in the containing cavity, and the first partition plate and the second partition plate are respectively connected to the coaming 215 on both sides of the bottom plate 214 along the width direction of the bottom plate 214, and the first partition plate and the second partition plate form a space therebetween to divide the containing cavity into the first cavity 211 and the second cavity 212.
[0087] The radio frequency module 22 is arranged in the first cavity 211, and is mainly responsible for processing the transmission and reception of radio frequency signals.In this embodiment, the radio frequency module 22 includes the T-shaped waveguide power divider 1 as described above.It should be noted that the appearance of the T-shaped waveguide power divider 1 as disclosed in Figure 4 is not the appearance as shown in Figure 1 , but an internal passage as shown in Figure 1 is opened inside.
[0088] The control module 23 and the power module 24 are arranged in the second cavity 212, and the control module 23 is electrically connected with the radio frequency module 22 to control the radio frequency module 22 to work. The power module 24 is electrically connected with the control module 23 to supply power for the control module 23 and the radio frequency module 22.
[0089] In this embodiment, the radio frequency module 22 is arranged in the first cavity 211, and the control module 23 and the power module 24 are arranged in the second cavity 212, so that the electromagnetic interference on the control module 23 and the power module 24 can be reduced, and the electromagnetic compatibility and the electromagnetic shielding function of the communication device 2 can be improved. At the same time, the radio frequency module 22 generates a large amount of heat when working, and arranging the radio frequency module 22 in the first cavity 211 and arranging the control module 23 and the power module 24 in the second cavity 212 can prevent the heat emitted by the radio frequency module 22 from causing overheating and other influences on the control module 23 and the power module 24, effectively protecting the control module 23 and the power module 24. In addition, the first cavity 211 and the second cavity 212 are separated by the first partition plate and the second partition plate, so that the radio frequency module 22 and the control module 23 can be wired between the first partition plate and the second partition plate, and each line has enough space, which helps to reduce the interference between the lines and improve the transmission quality of the signal.
[0090] Please continue to refer to Figure 3 and Figure 4 In some embodiments, the radio frequency module 22 further includes a baseband board 221, a millimeter wave radio frequency board 222, a bent waveguide 223, a first antenna 224, and a second antenna 225. The baseband board 221 is arranged at the bottom of the first cavity 211, and the baseband board 221 is electrically connected with the control module 23. The millimeter wave radio frequency board 222 is arranged in a spaced manner with the baseband board 221 and is electrically connected with the baseband board 221, and the T-shaped waveguide power divider 1 is arranged between the millimeter wave radio frequency board 222 and the baseband board 221. The bent waveguide 223 is electrically connected with the millimeter wave radio frequency board 222, and the bent waveguide 223 is connected with one end of the input waveguide 11 away from the waveguide power divider 12. The first antenna 224 is connected with one end of the first branch output waveguide 131 away from the first branch 122. The second antenna 225 is connected with one end of the second branch output waveguide 132 away from the second branch 123.
[0091] The baseband board 221 is responsible for processing of baseband signals, including signal encoding, decoding, signal processing before modulation, and signal recovery after demodulation, etc. The millimeter wave radio frequency board 222 is responsible for modulation, transmission, reception, and demodulation of echo signals of millimeter wave signals, etc. The baseband board 221 is arranged at the bottom of the first cavity 211, and the millimeter wave radio frequency board 222 is arranged above the baseband board 221 and is spaced apart from the baseband board 221, so that efficient signal interaction between the millimeter wave radio frequency board 222 and the baseband board 221 is achieved, that is, high line transmission and processing of signals are facilitated.
[0092] In this embodiment, the T-shaped waveguide power divider 1 can be arranged between the millimeter wave radio frequency board 222 and the baseband board 221. The bent waveguide 223 is connected between the millimeter wave radio frequency board 222 and the baseband board 221, which can change the direction of electromagnetic wave transmission, so that the signal can be smoothly transmitted from the millimeter wave radio frequency board 222 to the T-shaped waveguide power divider 1.
[0093] In addition, the length direction of the input waveguide 11 of the T-shaped waveguide power divider 1 can be substantially the same as the length direction of the bottom plate 214, and the length direction of the first sub-output waveguide 131 and the second sub-output waveguide 132 of the output waveguide 13 of the T-shaped waveguide power divider 1 can be substantially the same as the width direction of the bottom plate 214, so that the end of the first sub-output waveguide 131 away from the first branch 122 is directed to one side of the bottom plate 214, and the end of the second sub-output waveguide 132 away from the second branch 123 is directed to the other side of the bottom plate 214.
[0094] The first antenna 224 can be in a strip shape, the first antenna 224 is connected to one end of the first sub-output waveguide 131 away from the first branch 122, and extends substantially along the width direction of the bottom plate 214, and the end of the first antenna 224 away from the first sub-output waveguide 131 is directed to one side of the bottom plate 214.
[0095] Similarly, the second antenna 225 can also be in a strip shape, the second antenna 225 is connected to one end of the second sub-output waveguide 132 away from the second branch 123, and extends substantially along the width direction of the bottom plate 214, and the end of the second antenna 225 away from the second sub-output waveguide 132 is directed to the other side of the bottom plate 214.
[0096] It can be understood that the first antenna 224, the second antenna 225, and the T-shaped waveguide power divider 1 can be designed integrally to avoid deformation of the first antenna 224, the second antenna 225, and the T-shaped waveguide power divider 1 after long-term vibration.
[0097] According to the simulation results, in the communication device 2 provided in the embodiment, the maximum gain of the first antenna 224 in the direction away from the end of the first sub-output waveguide 131 and the second antenna 225 in the direction away from the end of the second sub-output waveguide 132 is 22.48 dBi, that is, the ability of the first antenna 224 to send or receive signals in the direction away from the end of the first sub-output waveguide 131 and the second antenna 225 in the direction away from the end of the second sub-output waveguide 132 is enhanced, the signal strength can be improved, thereby improving the quality of communication, and the communication coverage can be expanded.
[0098] In other embodiments, the T-shaped waveguide power divider 1 can be arranged on the side of the millimeter wave radio frequency board 222 away from the baseband board 221.
[0099] Please continue to refer to Figure 3 With Figure 4 In some embodiments, the end of the first antenna 224 away from the first sub-output waveguide 131 and the end of the second antenna 225 away from the second sub-output waveguide 132 are both arranged in a rectangular shape.
[0100] The end of the first antenna 224 away from the first sub-output waveguide 131 and the end of the second antenna 225 away from the second sub-output waveguide 132 are both arranged in a rectangular shape, which helps to optimize the radiation pattern of the antenna, so that the antenna can more efficiently radiate and receive electromagnetic waves, thereby improving the signal transmission efficiency of the communication device 2.
[0101] In addition, the first antenna 224 can be arranged in a horn-like structure, that is, the cross-sectional area of the first antenna 224 gradually increases from one end of the first antenna 224 connected to the first sub-output waveguide 131 to the other end, thereby forming a horn-like structure.
[0102] Similarly, the second antenna 225 can also be arranged in a horn-like structure, that is, the cross-sectional area of the second antenna 225 gradually increases from one end of the second antenna 225 connected to the second sub-output waveguide 132 to the other end, thereby forming a horn-like structure.
[0103] Arranging the first antenna 224 and the second antenna 225 in a horn-like structure helps to improve the gain of the first antenna 224 and the second antenna 225, so that the communication device 2 more effectively utilizes the energy of electromagnetic waves when receiving and sending signals. In addition, the horn-like structure makes the first antenna 224 and the second antenna 225 have a wider frequency bandwidth, which can maintain good performance in a wider frequency range. Furthermore, the horn-like structure enables the first antenna 224 and the second antenna 225 to more effectively receive electromagnetic waves, which can improve the sensitivity of the communication device 2 in receiving electromagnetic waves.
[0104] In some other embodiments, the first antenna 224 is arranged away from the end of the first sub-output waveguide 131 and the second antenna 225 is arranged away from the end of the second sub-output waveguide 132, and the shapes of the two are not limited to circular.
[0105] Please continue to refer to Figure 3 With Figure 4 In some embodiments, the two side walls of the shell 21 are provided with radomes 213, and the two radomes 213 are respectively opposite to the first antenna 224 and the second antenna 225.
[0106] Among them, the two sides of the surrounding plate 215 in the width direction of the bottom plate 214 are provided with through holes penetrating the surrounding plate 215, and the through holes are provided with radomes 213.
[0107] One of the radomes 213 opposite to the first antenna 224 means that the radome 213 is arranged away from the end of the first sub-output waveguide 131 along the width direction of the bottom plate 214, in other words, the projection of the end of the first sub-output waveguide 131 falls completely within the projection of the radome 213 in the width direction of the bottom plate 214.
[0108] Similarly, the other radome opposite to the first antenna 224 means that the radome 213 is arranged away from the end of the second sub-output waveguide 132 along the width direction of the bottom plate 214, in other words, the projection of the end of the second sub-output waveguide 132 falls completely within the projection of the radome 213 in the width direction of the bottom plate 214.
[0109] The radome 213 can close the through hole and prevent the antenna and the components inside the first cavity 211 from being damaged.
[0110] In some other embodiments, the first antenna 224 and the second antenna 225 can be opposite to the surrounding plate 215 of the shell 21.
[0111] In addition, the control module can be a vehicle control board, and the communication device 2 further comprises a server mainboard 25 and a mounting plate 26, the server mainboard 25 is arranged at the bottom of the second cavity 212, the mounting plate 26 is mounted on the side of the server mainboard 25 away from the bottom wall of the second cavity 212, and the control module 23 and the power module 24 are arranged on the mounting plate 26.
[0112] Although the utility model has been described with reference to the preferred embodiments, various modifications can be made to it without departing from the scope of the utility model and equivalent replacements can be made to the components therein. In particular, the technical features mentioned in each embodiment can be combined in any manner as long as there is no structural conflict. The utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
Claims
1. A T-type waveguide power divider, characterized in that, include: Input waveguide; Wavelength division waveguide, the wavelength division waveguide includes a wavelength division body, a first branch and a second branch, one end of the wavelength division body is connected to the end of the input waveguide, and the other end of the wavelength division body is connected to the first branch and the second branch which are spaced apart; as well as The output waveguide includes a first sub-output waveguide and a second sub-output waveguide extending along the width direction of the input waveguide. The first sub-output waveguide is connected to the end of the first branch away from the main body of the waveguide, and the second sub-output waveguide is connected to the end of the second branch away from the main body of the waveguide. The connection points between the inner side of the first branch and the main body of the wavelet splitter, and the connection points between the inner side of the second branch and the main body of the wavelet splitter, are both rounded.
2. The T-type waveguide power divider according to claim 1, characterized in that, The end face of the wave splitter body used to connect the first branch and the second branch has an arc surface, which is connected between the inner side surface of the first branch and the inner side surface of the second branch.
3. The T-type waveguide power divider according to claim 1, characterized in that, The width of the input waveguide is smaller than the width of the wavelet splitter body, and the connection points between the two opposite sides of the input waveguide and the wavelet splitter body are both rounded.
4. The T-type waveguide power divider according to claim 3, characterized in that, The connection points between the two sides of the wavelet splitter body and the end face of the wavelet splitter body that connects to the input waveguide are both rounded.
5. The T-type waveguide power divider according to claim 1, characterized in that, The connection points between the inner side of the first branch and the first sub-output waveguide, and between the inner side of the second branch and the second sub-output waveguide, are both rounded.
6. The T-type waveguide power divider according to claim 1, characterized in that, The connection points between the outer surface of the first branch and the first sub-output waveguide, and between the outer surface of the second branch and the second sub-output waveguide, are both rounded.
7. A communication device, characterized in that, include: A housing having a first cavity and a second cavity communicating with each other; A radio frequency module, wherein the radio frequency module is disposed in the first cavity, and the radio frequency module includes a T-type waveguide power divider as described in any one of claims 1-6; A control module is disposed in the second cavity and electrically connected to the radio frequency module; as well as A power module is disposed in the second cavity and is electrically connected to the control module.
8. The communication device according to claim 7, characterized in that, The radio frequency module also includes: A baseband board is disposed at the bottom of the first cavity, and the baseband board is electrically connected to the control module; A millimeter-wave radio frequency board is spaced apart from and electrically connected to the baseband board, and the T-shaped waveguide power divider is disposed between the millimeter-wave radio frequency board and the baseband board; A bent waveguide is electrically connected to the millimeter-wave radio frequency board, and the bent waveguide is connected to the end of the input waveguide away from the subwaveguide; A first antenna is connected to the end of the first sub-output waveguide furthest from the first branch; and The second antenna is connected to the end of the second output waveguide that is furthest from the second branch.
9. The communication device according to claim 8, characterized in that, The ends of the first antenna away from the first sub-output waveguide and the ends of the second antenna away from the second sub-output waveguide are both rectangular.
10. The communication device according to claim 8, characterized in that, The two opposite sidewalls of the housing are each provided with an antenna cover, and the two antenna covers are respectively facing the first antenna and the second antenna.