Vehicle-mounted K-waveband omnidirectional antenna convenient to install
By adopting the waveguide slot array antenna and the omnidirectional adjustment table design, combined with the combination of fixed disk and flange bolts, the installation and efficiency problems of the K-band omnidirectional data link antenna are solved, and an on-board K-band omnidirectional antenna with easy installation, low loss and high gain is achieved.
Patent Information
- Application Number
- CN202422343894.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-25
Smart Images
Figure CN223066460U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of data link antennas, and particularly relates to a vehicle-mounted K-band omnidirectional antenna which is convenient for installation. Background Technique
[0002] K-band data link antennas have high operating frequencies and wide operating frequency bands, and are increasingly attracting people's attention. K-band omnidirectional antennas are small in size and have wide beamwidths, with relatively high in-beam gain. When applied to automobiles, they can intercept high-frequency radio waves transmitted by a transmitting station and transmit them to the receivers of car radios, in-vehicle telephones, or radio navigation devices for carrier demodulation devices. The following problems exist in the prior art:
[0003] Because the existing high-gain omnidirectional data link antennas operate below the C-band, mostly cylindrical symmetric oscillator arrays and microstrip oscillator arrays. When the antenna is raised to the K-band, due to the small size of the antenna, traditional cylindrical oscillators can no longer be used. As the frequency of the microstrip oscillator increases, the printed board loss is large, resulting in low antenna efficiency. Therefore, traditional omnidirectional data link antennas cannot meet the application requirements of K-band omnidirectional data link antennas. Summary of the Utility Model
[0004] The utility model provides a vehicle-mounted K-band omnidirectional antenna which is convenient for installation to solve the problems raised in the above background technique.
[0005] To solve the above technical problems, the technical solution adopted by the utility model is:
[0006] A vehicle-mounted K-band omnidirectional antenna which is convenient for installation, comprising an antenna cylinder cover. A fixing mechanism is arranged at the front end of the antenna cylinder cover. An antenna mounting flange is arranged on the front side of the fixing mechanism. An antenna support disk is fixedly installed on the rear side of the inner ring of the antenna cylinder cover. A plurality of waveguide double-narrow-side slot arrays are fixedly installed on the front end of the antenna support disk. Pattern omnidirectional adjustment platforms are arranged on the left side and above the plurality of waveguide double-narrow-side slot arrays. The fixing mechanism includes a transition waveguide cover. The rear end of the transition waveguide cover is fixedly connected to the front end of the antenna cylinder cover. A fixing disk is fixedly connected to the front side of the transition waveguide cover, and the inner cavity of the transition waveguide cover penetrates to the front side of the fixing disk. A transition waveguide is fixedly installed in the inner cavity of the transition waveguide cover, and the transition waveguide is located at the front end of the waveguide double-narrow-side slot array at the forefront of the inner cavity of the antenna cylinder cover.
[0007] A further improvement of the technical solution of the present utility model lies in that: the antenna mounting flange is provided with four antenna mounting flange fixing holes that penetrate through from front to back in the upper, lower, left, and right directions in an annular array. Flange mounting bolts are respectively arranged through the inner circles of the four antenna mounting flange fixing holes. The antenna mounting flange is provided with four fixing plate bolt holes in an annular array, and the four fixing plate bolt holes are respectively located between two adjacent antenna mounting flange fixing holes.
[0008] A further improvement of the technical solution of the present utility model lies in that: a sealing ring is fixedly installed on the front side of the fixing plate, an annular groove is formed on the rear side of the antenna mounting flange, and after the fixing plate and the antenna mounting flange are combined, the sealing ring is clamped with the annular groove.
[0009] A further improvement of the technical solution of the present utility model lies in that: four through slots that penetrate through from front to back are formed on the outer wall of the fixing plate in an annular array. After the fixing plate and the antenna mounting flange are combined, the rear ends of the four flange mounting bolts are respectively located inside the four slots.
[0010] A further improvement of the technical solution of the present utility model lies in that: four bolt slots that penetrate through from front to back are formed on the fixing plate in an annular array. The four bolt slots are respectively located between two adjacent slots, and limiting rings are fixedly installed on the front sides of the inner circles of the four bolt slots. The inner circles of the four limiting rings are respectively located at the rear sides of the four fixing plate bolt holes. Fixing plate mounting bolts are respectively arranged through the inner circles of the four limiting rings, and the front ends of the outer walls of the four fixing plate mounting bolts are respectively threadedly connected with the inner circles of the four fixing plate bolt holes.
[0011] Due to the adoption of the above technical solution, the technical progress achieved by the present utility model compared with the prior art is as follows:
[0012] 1. The present utility model provides an in-vehicle K-band omnidirectional antenna that is easy to install. By adopting the form of a waveguide slot array antenna, the antenna has a small volume, low antenna loss, high efficiency, can obtain a high gain within the beam, and at the same time adopts a design of an omnidirectional pattern adjustment platform to obtain better omnidirectional performance, meeting the requirements of the k-band omnidirectional data link antenna.
[0013] 2. The present utility model provides an in-vehicle K-band omnidirectional antenna that is easy to install. Through the mutual cooperation among the fixing plate, the antenna mounting flange, the fixing plate bolt holes, and the flange mounting bolts, the overall in-vehicle K-band omnidirectional antenna can be conveniently installed on the vehicle. At the same time, by removing the fixing plate, the antenna cylinder cover can be removed, facilitating secondary disassembly and assembly after maintenance. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall structure of the present utility model;
[0015] Figure 2Schematic cross-sectional view of the antenna cylinder cover of the structure of the present utility model;
[0016] Figure 3 Schematic cross-sectional view of the antenna mounting flange and the fixing plate of the structure of the present utility model;
[0017] Figure 4 Schematic cross-sectional view of the bolt groove of the structure of the present utility model.
[0018] In the figure: 1. Antenna cylinder cover; 11. Waveguide double-narrow-side slot array; 12. Antenna support plate; 13. Pattern omnidirectional adjustment table; 2. Fixing mechanism; 21. Transition waveguide cover; 22. Fixing plate; 221. Empty slot; 222. Sealing ring; 223. Bolt groove; 224. Limit ring; 225. Fixing plate mounting bolt; 23. Transition waveguide; 3. Antenna mounting flange; 31. Antenna mounting flange fixing hole; 32. Fixing plate bolt hole; 33. Flange mounting bolt. Specific implementation mode
[0019] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation modes.
[0020] As Figure 1 , Figure 2 shown, the present utility model provides a vehicle-mounted K-band omnidirectional antenna that is easy to install, including an antenna cylinder cover 1. A fixing mechanism 2 is arranged at the front end of the antenna cylinder cover 1. An antenna mounting flange 3 is arranged on the front side of the fixing mechanism 2. An antenna support plate 12 is fixedly installed on the rear side of the inner circle of the antenna cylinder cover 1. A plurality of waveguide double-narrow-side slot arrays 11 are fixedly installed at the front end of the antenna support plate 12. Pattern omnidirectional adjustment tables 13 are arranged on the left side and above the plurality of waveguide double-narrow-side slot arrays 11. The fixing mechanism 2 includes a transition waveguide cover 21. The rear end of the transition waveguide cover 21 is fixedly connected to the front end of the antenna cylinder cover 1. A fixing plate 22 is fixedly connected to the front side of the transition waveguide cover 21. And the inner cavity of the transition waveguide cover 21 penetrates to the front side of the fixing plate 22. A transition waveguide 23 is fixedly installed in the inner cavity of the transition waveguide cover 21. The transition waveguide 23 is located at the front end of the waveguide double-narrow-side slot array 11 at the foremost side in the inner cavity of the antenna cylinder cover 1;
[0021] In the transmitting state, K-band electromagnetic waves are fed into the standard waveguide port BJ220 at the antenna mounting flange 3. After passing through the transition waveguide 23 in the transition waveguide cover 21, they are fed into the waveguide double-narrow-side slot array 11. Finally, the K-band electromagnetic waves are omnidirectionally radiated into space by the waveguide double-narrow-side slot array 11 on the front side of the antenna support disk 12. The antenna cylinder cover 1 can protect the antenna from erosion by rain, sand, etc., and efficiently pass the electromagnetic waves in the working frequency band. The omnidirectional pattern adjustment table 13 improves the omnidirectionality of the radiation of the waveguide double-narrow-side slot array 11 and improves the antenna non-circularity index. The receiving state is the reverse process of the transmitting state. The electromagnetic waves in free space pass through the antenna cylinder cover 1, form surface currents on the waveguide double-narrow-side slot array 11 and the omnidirectional pattern adjustment table 13, and after forming in-phase superposition of electromagnetic waves in the waveguide, they are then converted to the electromagnetic waves transmitted in the standard waveguide through the transition waveguide 23 and finally fed into the receiving system.
[0022] As Figure 3 shown, the antenna mounting flange 3 is provided with four antenna mounting flange fixing holes 31 that penetrate through from top to bottom, left to right, front and back in a circular array. The inner circles of the four antenna mounting flange fixing holes 31 are all provided with flange mounting bolts 33. The antenna mounting flange 3 is provided with four fixing plate bolt holes 32 in a circular array, and the four fixing plate bolt holes 32 are respectively located between two adjacent antenna mounting flange fixing holes 31. A sealing ring 222 is fixedly installed on the front side of the fixing plate 22. A circular groove is provided on the rear side of the antenna mounting flange 3. After the fixing plate 22 and the antenna mounting flange 3 are combined, the sealing ring 222 is clamped with the circular groove.
[0023] When installing the overall antenna cylinder cover 1, the antenna mounting flange 3 can be first placed at the position where it needs to be installed on the vehicle, and then the four flange mounting bolts 33 are passed through the four antenna mounting flange fixing holes 31 and rotated to be fixed on the vehicle to complete the fixing of the antenna mounting flange 3. Then, the fixing plate 22 at the front end of the transition waveguide cover 21 is aligned with the four flange mounting bolts 33 at the rear end through the four slots 221 and attached to the rear side of the antenna mounting flange 3, and the sealing between the antenna mounting flange 3 and the fixing plate 22 is achieved by squeezing the sealing ring 222 to prevent water seepage.
[0024] As Figure 4As shown in the figure, four through empty slots 221 are annularly arrayed on the outer wall of the fixed disk 22. After the fixed disk 22 is combined with the antenna mounting flange 3, the rear ends of the four flange mounting bolts 33 are respectively located inside the four empty slots 221. Four bolt slots 223 are annularly arrayed on the fixed disk 22 and penetrate through from front to back. The four bolt slots 223 are respectively located between two adjacent empty slots 221. And a limiting ring 224 is fixedly installed on the front side of the inner ring of the four bolt slots 223. The inner rings of the four limiting rings 224 are respectively located at the rear sides of the four fixed disk bolt holes 32. A fixed disk mounting bolt 225 is penetrated through the inner ring of each of the four limiting rings 224. The front ends of the outer walls of the four fixed disk mounting bolts 225 are respectively threadedly connected with the inner rings of the four fixed disk bolt holes 32;
[0025] By respectively passing the front ends of the four fixed disk mounting bolts 225 through the inner rings of the limiting rings 224 in the four bolt slots 223 and threadedly connecting them with the inner rings of the four fixed disk bolt holes 32 opened on the antenna mounting flange 3, the fixation of the fixed disk 22 and the antenna mounting flange 3 is realized, and the antenna cylinder cover 1 at the rear side of the transition waveguide cover 21 is quickly fixed on the vehicle smoothly.
[0026] Next, the working principle of the vehicle-mounted K-band omnidirectional antenna that is easy to install will be specifically described.
[0027] As Figures 1-4 shown, in the transmitting state, the k-band electromagnetic wave is fed into from the standard waveguide port BJ220 at the antenna mounting flange 3. After passing through the transition waveguide 23 in the transition waveguide cover 21, it is fed into the waveguide double-narrow-side slot array 11. Finally, the k-band electromagnetic wave is omnidirectionally radiated into the space by the waveguide double-narrow-side slot array 11 in front of the antenna support disk 12. The antenna cylinder cover 1 can protect the antenna from being eroded by rain, sand and the like, and at the same time efficiently pass the electromagnetic wave in the working frequency band. The pattern omnidirectional adjustment platform 13 improves the omnidirectionality of the radiation of the waveguide double-narrow-side slot array 11 and improves the antenna non-circularity index. The receiving state is the reverse process of the transmitting state. The electromagnetic wave in free space passes through the antenna cylinder cover 1, forms surface current on the waveguide double-narrow-side slot array 11 and the pattern omnidirectional adjustment platform 13, and after the in-phase superposition of the electromagnetic wave is formed in the waveguide, it is then converted into the electromagnetic wave transmitted in the standard waveguide through the transition waveguide 23, and finally fed into the receiving system.
[0028] The above has generally described the present invention in detail. However, based on the present invention, some modifications or improvements can be made, which are obvious to those of ordinary skill in the art. Therefore, the modifications or improvements without departing from the spirit of the present invention are all within the protection scope of the present invention.
Claims
1. An in-vehicle K-band omnidirectional antenna that is easy to install, comprising an antenna cylinder cover (1), characterized in that: A fixing mechanism (2) is provided at the front end of the antenna cylinder cover (1). An antenna mounting flange (3) is provided on the front side of the fixing mechanism (2). An antenna support disk (12) is fixedly installed on the rear side of the inner circle of the antenna cylinder cover (1). A plurality of waveguide double-narrow-edge slot arrays (11) are fixedly installed at the front end of the antenna support disk (12). Pattern omnidirectional adjustment platforms (13) are provided on the left and above the plurality of waveguide double-narrow-edge slot arrays (11). The fixing mechanism (2) includes a transition waveguide cover (21). The rear end of the transition waveguide cover (21) is fixedly connected to the front end of the antenna cylinder cover (1). A fixing disk (22) is fixedly connected to the front side of the transition waveguide cover (21), and the inner cavity of the transition waveguide cover (21) penetrates to the front side of the fixing disk (22). A transition waveguide (23) is fixedly installed in the inner cavity of the transition waveguide cover (21). The transition waveguide (23) is located at the front end of the waveguide double-narrow-edge slot array (11) at the forefront of the inner cavity of the antenna cylinder cover (1).
2. The omnidirectional vehicle-mounted K-band antenna according to claim 1, wherein: Four front-and-rear through antenna mounting flange fixing holes (31) are formed in a circular array on the antenna mounting flange (3). Flange mounting bolts (33) are respectively arranged through the inner circles of the four antenna mounting flange fixing holes (31). Four fixing disk bolt holes (32) are formed in a circular array on the antenna mounting flange (3). The four fixing disk bolt holes (32) are respectively located between two adjacent antenna mounting flange fixing holes (31).
3. The omnidirectional vehicle-mounted K-band antenna according to claim 1, wherein: A sealing ring (222) is fixedly installed on the front side of the fixing disk (22). An annular groove is formed on the rear side of the antenna mounting flange (3). After the fixing disk (22) and the antenna mounting flange (3) are combined, the sealing ring (222) is clamped with the annular groove.
4. The omnidirectional vehicle-mounted K-band antenna according to claim 3, wherein: Four front-and-rear through empty slots (221) are formed in a circular array on the outer wall of the fixing disk (22). After the fixing disk (22) and the antenna mounting flange (3) are combined, the rear ends of the four flange mounting bolts (33) are respectively located inside the four empty slots (221).
5. The omnidirectional vehicle-mounted K-band antenna according to claim 2, characterized in that: Four front-and-rear through bolt slots (223) are formed in a circular array on the fixing disk (22). The four bolt slots (223) are respectively located between two adjacent empty slots (221). Limit rings (224) are fixedly installed on the front sides of the inner circles of the four bolt slots (223). The inner circles of the four limit rings (224) are respectively located behind the four fixing disk bolt holes (32). Fixing disk mounting bolts (225) are respectively arranged through the inner circles of the four limit rings (224). The front ends of the outer walls of the four fixing disk mounting bolts (225) are respectively in threaded connection with the inner circles of the four fixing disk bolt holes (32).