CN220774753U - Foldable portable double-ring antenna - Google Patents
Foldable portable double-ring antenna Download PDFInfo
- Publication number
- CN220774753U CN220774753U CN202322556243.0U CN202322556243U CN220774753U CN 220774753 U CN220774753 U CN 220774753U CN 202322556243 U CN202322556243 U CN 202322556243U CN 220774753 U CN220774753 U CN 220774753U
- Authority
- CN
- China
- Prior art keywords
- antenna
- section
- bnc
- loop
- rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 21
- 230000001681 protective effect Effects 0.000 claims description 8
- 241000156948 Aphantopus hyperantus Species 0.000 claims description 6
- 230000009977 dual effect Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 abstract description 17
- 238000009434 installation Methods 0.000 abstract description 12
- 230000005855 radiation Effects 0.000 abstract description 5
- 238000010248 power generation Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000005433 ionosphere Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Support Of Aerials (AREA)
Abstract
The utility model belongs to the technical field of short wave antenna communication, and particularly relates to a foldable portable double-loop antenna, which comprises a antenna tuning box: the solar energy power generation device is characterized in that BNC sockets are arranged on two sides of the outer wall of the antenna tuning box, a large-loop antenna radiator is arranged on the BNC sockets, a threaded BNC socket and a data control port are arranged at the top end of the antenna tuning box, the data control port is located on one side of the threaded BNC socket, and a foldable supporting mechanism is arranged on the threaded BNC socket. The utility model has low installation and erection requirements and stronger applicability. The large ring, the small ring and the supporting rod are designed into a foldable form through the structural design, so that the continuity of the electrical performance is guaranteed, the reliability is higher, the installation and the use are more convenient, and the time is saved by about 1/2 compared with other installation modes. Compared with the traditional antenna, the antenna has the advantages of portability, quick installation, high antenna radiation efficiency, no communication blind area and the like.
Description
Technical Field
The utility model belongs to the technical field of short wave antenna communication, and particularly relates to a foldable portable double-loop antenna.
Background
Short wave communication is a communication which uses ionosphere to reflect a propagation signal, is a remote communication means which is not limited by a network pivot and an active relay, and if a war or disaster occurs, various communication networks are damaged, satellites are attacked, and short wave communication is not affected. The survivability and autonomous communication capability of short wave communication are not comparable to other communications.
The active portable short wave antenna mainly comprises a whip antenna, a portable dipole antenna and the like, and the whip antenna is small in size, simple in structure and portable in use for short distance (ground wave) or long distance (sky wave) communication. For example, a common 2.4 meter whip antenna is convenient to carry, the effective ground communication distance is about 10-20 km, the sky wave communication distance exceeds 100 km, but a whip antenna always has a 'blind zone' between about 20 and 100 km. Bipolar antennas and the like can better solve the problem of blind areas, but the bipolar antennas are large in size, and are required to be installed by multiple persons in a matching way, so that the flexibility of the bipolar antennas is limited, and the bipolar antennas are not suitable for individual soldier carrying mobile communication.
At present, a double-loop antenna (or a large-and-small-loop antenna) is being researched at home and abroad, the problem of communication blind areas can be solved, the structural size is larger than that of a whip antenna, but is much smaller than that of a bipolar antenna, most of the double-loop antennas researched at present are formed by splicing a plurality of sections of antenna rods in a threaded mode, the mounting steps are complex, and the mounting is inconvenient. In order to solve the problems of the dual-loop antenna, the dual-loop antenna is convenient to carry and install and use, a foldable portable dual-loop antenna is provided for solving the existing problems.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model provides a foldable portable double-loop antenna, which solves the problems in the prior art.
In order to solve the technical problems, the utility model provides the following technical scheme:
a foldable portable dual loop antenna comprising a antenna tuning box: BNC sockets are arranged on two sides of the outer wall of the antenna adjusting box, a large-loop antenna radiator is arranged on the BNC sockets, a threaded BNC socket and a data control port are arranged at the top end of the antenna adjusting box, the data control port is positioned on one side of the threaded BNC socket, and a foldable supporting mechanism is arranged on the threaded BNC socket;
the large-loop antenna radiator comprises a first nut locking plug, a first rubber protective cap, a first folding seat, a second rubber protective cap, a BNC plug, a first section of antenna rod, a second section of antenna rod, a third section of antenna rod, a movable pin shaft and an antenna rod sleeve, wherein two ends of the second section of antenna rod are respectively connected with the first section of antenna rod and the third section of antenna rod through the first folding seat and the second folding seat, the other end of the first section of antenna rod is provided with the first nut locking plug, and the other end of the third section of antenna rod is provided with the BNC plug;
the foldable supporting mechanism comprises a buckle, a corrugated pipe, a fourth folding seat, a small ring interface box, a first section supporting rod, a second section supporting rod, a BNC connector with a nut, a top connector, an insulating seat, a first small ring interface, a second small ring interface, a large ring interface and a locking nut, wherein the BNC connector with the nut is installed at one end of the first section supporting rod, the other end of the first section supporting rod is connected with the second section supporting rod through the fourth folding seat, the top connector is installed at the other end of the second section supporting rod, the small ring interface box is installed on the outer wall of the second section supporting rod, insulating seats are arranged on two sides of the outer wall of the small ring interface box, the first small ring interface is arranged on the insulating seats, the large ring interface and the second small ring interface are arranged on two sides of the outer wall of the top connector, and the locking nut is arranged on the outer wall of the top connector;
the small-loop antenna radiator is arranged between a first small-loop interface and a second small-loop interface on the foldable supporting mechanism and comprises a fourth section of antenna rod, a second nut locking plug, a third folding seat, a fifth section of antenna rod and a third nut locking plug, the fourth section of antenna rod is connected with the fifth section of antenna rod through the third folding seat, the second nut locking plug is arranged at the other end of the fourth section of antenna rod, and the third nut locking plug is arranged at the other end of the fifth section of antenna rod.
Further, the first section antenna rod, the second section antenna rod and the first folding seat are movably connected through movable pin shafts, and the second section antenna rod, the third section antenna rod and the second folding seat are movably connected through movable pin shafts.
Further, a first rubber protective cap is arranged on the outer wall of the other end of the first section of antenna rod, and a second rubber protective cap is arranged on the outer wall of the other end of the third section of antenna rod.
Further, a corrugated pipe and a buckle are arranged on the fourth folding seat.
Further, the fourth antenna rod, the fifth antenna rod and the third folding seat are movably connected through movable pin shafts.
Further, a second nut lock plug on the fourth antenna rod is installed in the second small ring interface, and a third nut lock plug on the fifth antenna rod is installed in the first small ring interface.
Further, the nut BNC connector on the foldable supporting mechanism is connected with the threaded BNC socket on the ceiling regulating box.
Further, the BNC socket on the antenna tuning box is connected with the BNC plug on the large-loop antenna radiator, and the first nut locking plug on the large-loop antenna radiator is connected with the large-loop interface on the foldable supporting mechanism.
Further, the small loop antenna radiator is located above the inside of the large loop antenna radiator, and the large loop antenna radiator and the small loop antenna radiator are coplanar.
By means of the technical scheme, the utility model provides a foldable portable double-ring antenna, which has at least the following beneficial effects:
the utility model designs the antenna into two coplanar double-current loops by matching a series of structures and adopting a magnetic loop antenna technology, and has the narrow-band resonance characteristic of a current loop structure. The double-loop antenna works in a series LC resonance state, the antenna works at a corresponding resonance frequency through a tuning capacitor, an internal small-loop antenna radiator is fed by a transmission line, an external large-loop antenna radiator is excited through inductive coupling, when the double-loop antenna is in the resonance state, the external large-loop antenna radiator radiates energy, the efficiency is highest, the double-loop antenna is an important means for improving the radiation efficiency of the antenna, and the magnetic field intensity in the near-field energy is much higher than the electric field intensity; meanwhile, due to the closed structure of magnetic lines of force, the double-loop antenna is insensitive to the erection environment, the influence of the erection height on the antenna performance is small, the antenna installation and erection requirements are low, and the applicability is stronger. The large ring, the small ring and the supporting rod are designed into a foldable form through the structural design, so that the continuity of the electrical performance is guaranteed, the reliability is higher, the installation and the use are more convenient, and the time is saved by about 1/2 compared with other installation modes. Compared with the traditional antenna, the antenna has the advantages of portability, quick installation, high antenna radiation efficiency, no communication blind area and the like.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application:
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is a schematic structural diagram of a radiator of a large loop antenna according to the present utility model;
FIG. 3 is a schematic diagram of a connection structure between a first antenna mast and a second antenna mast according to the present utility model;
fig. 4 is a schematic structural diagram of a radiator of a small loop antenna according to the present utility model;
FIG. 5 is a schematic view of a foldable support mechanism according to the present utility model;
FIG. 6 is a schematic diagram of a small ring interface box according to the present utility model;
FIG. 7 is a schematic view of the top sub of the present utility model;
FIG. 8 is a schematic view of the structure of the inventive ceiling regulating box;
fig. 9 is a schematic view showing the state of the radiator of the large loop antenna of the present utility model being flattened and folded;
FIG. 10 is a schematic view of the foldable support mechanism of the present utility model in a flattened and folded configuration;
FIG. 11 is a schematic view showing the connection state between the foldable support mechanism and the ceiling adjusting box according to the present utility model;
FIG. 12 is a schematic view showing the radiator of the small loop antenna of the present utility model in an unfolded state;
fig. 13 is a schematic view showing a connection state between the radiator and the foldable support mechanism of the small loop antenna of the present utility model;
fig. 14 is a schematic view showing a connection state between a radiator of a loop antenna and a loop interface box according to the present utility model;
fig. 15 is a schematic diagram showing a connection state between the radiator and the antenna tuning box.
In the figure: 1. a large loop antenna radiator; 101. a first nut lock plug; 102. a first rubber cap; 103. a first folding seat; 104. a second folding seat; 105. a second rubber cap; 106. BNC plug; 107. a first section of antenna mast; 108. a second section of antenna mast; 109. a third antenna mast; 110. a movable pin shaft; 111. an antenna mast sleeve; 2. a small loop antenna radiator; 201. a fourth antenna mast; 202. a second nut locking plug; 203. a third folding seat; 204. a fifth antenna mast; 205. a third nut locks the plug; 3. a foldable support mechanism; 301. a buckle; 302. a bellows; 303. a fourth folding seat; 304. a small ring interface box; 305. a first section of support rod; 306. a second section support bar; 307. BNC connector with nut; 308. a top joint; 309. an insulating base; 310. a first ringlet interface; 311. a second ringlet interface; 312. a large ring interface; 313. a lock nut; 4. a ceiling regulating box; 401. BNC socket; 402. a threaded BNC socket; 403. and a data control port.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1 to 15, the foldable portable dual-loop antenna of the present utility model mainly includes a antenna tuning box 4: the BNC socket 401 is arranged on two sides of the outer wall of the antenna adjusting box 4, the large-loop antenna radiator 1 is arranged on the BNC socket 401, the threaded BNC socket 402 and the data control port 403 are arranged at the top end of the antenna adjusting box 4, the data control port 403 is positioned on one side of the threaded BNC socket 402, the foldable supporting mechanism 3 is arranged on the threaded BNC socket 402, the large-loop antenna radiator 1 comprises a first nut locking plug 101, a first rubber protecting cap 102, a first folding seat 103, a second folding seat 104, a second rubber protecting cap 105, a BNC plug 106, a first antenna rod 107, a second antenna rod 108, a third antenna rod 109, a movable pin 110 and an antenna rod sleeve 111, two ends of the second antenna rod 108 are respectively connected with the first antenna rod 107 and the third antenna rod 109 through the first folding seat 103 and the second folding seat 104, the other end of the first antenna rod 107 is provided with the first nut locking plug 101, the BNC plug 106 is arranged at the other end of the third section antenna rod 109, the foldable supporting mechanism 3 comprises a buckle 301, a corrugated pipe 302, a fourth folding seat 303, a small ring interface box 304, a first section supporting rod 305, a second section supporting rod 306, a BNC connector 307 with a nut, a top joint 308, an insulating seat 309, a first small ring interface 310, a second small ring interface 311, a large ring interface 312 and a locking nut 313, the BNC connector 307 with the nut is arranged at one end of the first section supporting rod 305, the other end of the first section supporting rod 305 is connected with the second section supporting rod 306 through the fourth folding seat 303, the top joint 308 is arranged at the other end of the second section supporting rod 306, the small ring interface box 304 is arranged on the outer wall of the second section supporting rod 306, the insulating seats 309 are arranged at two sides of the outer wall of the small ring interface box 304, the first small ring interface 310 is arranged on the insulating seat 309, both sides of the outer wall of the top joint 308 are provided with a large ring interface 312 and a second small ring interface 311, the outer wall of the top joint 308 is provided with a lock nut 313, a small ring antenna radiator 2 is arranged between a first small ring interface 310 and a second small ring interface 311 on the foldable supporting mechanism 3, the small ring antenna radiator 2 comprises a fourth section antenna rod 201, a second nut lock plug 202, a third folding seat 203, a fifth section antenna rod 204 and a third nut lock plug 205, the fourth section antenna rod 201 is connected with the fifth section antenna rod 204 through the third folding seat 203, the other end of the fourth section antenna rod 201 is provided with the second nut lock plug 202, the other end of the fifth section antenna rod 204 is provided with the third nut lock plug 205, the first section antenna rod 107 and the second section antenna rod 108 are movably connected with the first folding seat 103 through a movable pin 110, the second antenna rod 108, the third antenna rod 109 and the second folding seat 104 are movably connected through a movable pin shaft 110, a first rubber protective cap 102 is arranged on the outer wall of the other end of the first antenna rod 107, a second rubber protective cap 105 is arranged on the outer wall of the other end of the third antenna rod 109, a corrugated pipe 302 and a buckle 301 are arranged on the fourth folding seat 303, the fourth antenna rod 201, the fifth antenna rod 204 and the third folding seat 203 are movably connected through the movable pin shaft 110, a second nut locking plug 202 on the fourth antenna rod 201 is arranged in a second small ring interface 311, a third nut locking plug 205 on the fifth antenna rod 204 is arranged in a first small ring interface 310, a threaded BNC connector 307 on the foldable supporting mechanism 3 is connected with a threaded BNC socket 402 on the antenna adjusting box 4, a BNC socket 401 on the antenna adjusting box 4 is connected with a BNC plug 106 on the large ring antenna radiator 1, the first nut lock plug 101 on the large loop antenna radiator 1 is connected with the large loop interface 312 on the foldable support mechanism 3, the small loop antenna radiator 2 is located above the inner part of the large loop antenna radiator 1, and the large loop antenna radiator 1 and the small loop antenna radiator 2 are coplanar.
The utility model adopts the magnetic loop antenna technology to design the antenna into two coplanar double-current loop forms, and has the narrow-band resonance characteristic of a current loop structure. The double-loop antenna works in a series LC resonance state, the antenna works at a corresponding resonance frequency through a tuning capacitor, the inner small-loop antenna radiator 2 is fed by a transmission line, the outer large-loop antenna radiator 1 is excited through inductive coupling, when the double-loop antenna is in the resonance state, the energy is radiated by the outer large loop, the efficiency is highest, the double-loop antenna is an important means for improving the radiation efficiency of the antenna, and the magnetic field intensity in the near-field energy is much higher than the electric field intensity; meanwhile, due to the closed structure of magnetic lines of force, the double-loop antenna is insensitive to the erection environment, the influence of the erection height on the antenna performance is small, the antenna installation and erection requirements are low, and the applicability is stronger. The large ring, the small ring and the supporting rod are designed into a foldable form through the structural design, so that the continuity of the electrical performance is guaranteed, the reliability is higher, the installation and the use are more convenient, and the time is saved by about 1/2 compared with other installation modes. Compared with the traditional antenna, the antenna has the advantages of portability, quick installation, high antenna radiation efficiency, no communication blind area and the like.
It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A foldable portable dual loop antenna, characterized by comprising a antenna tuning box (4): BNC sockets (401) are arranged on two sides of the outer wall of the antenna tuning box (4), a large-loop antenna radiator (1) is arranged on the BNC sockets (401), a threaded BNC socket (402) and a data control port (403) are arranged at the top end of the antenna tuning box (4), the data control port (403) is positioned on one side of the threaded BNC socket (402), and a foldable supporting mechanism (3) is arranged on the threaded BNC socket (402);
the large-loop antenna radiator (1) comprises a first nut locking plug (101), a first rubber protective cap (102), a first folding seat (103), a second folding seat (104), a second rubber protective cap (105), a BNC plug (106), a first section antenna rod (107), a second section antenna rod (108), a third section antenna rod (109), a movable pin shaft (110) and an antenna rod sleeve (111), two ends of the second section antenna rod (108) are respectively connected with the first section antenna rod (107) and the third section antenna rod (109) through the first folding seat (103) and the second folding seat (104), the first nut locking plug (101) is arranged at the other end of the first section antenna rod (107), and the BNC plug (106) is arranged at the other end of the third section antenna rod (109);
the foldable support mechanism (3) comprises a buckle (301), a corrugated pipe (302), a fourth folding seat (303), a small ring interface box (304), a first section support rod (305), a second section support rod (306), a nut BNC connector (307), a top joint (308), an insulating seat (309), a first small ring interface (310), a second small ring interface (311), a large ring interface (312) and a locking nut (313), wherein the nut BNC connector (307) is installed at one end of the first section support rod (305), the other end of the first section support rod (305) is connected with the second section support rod (306) through the fourth folding seat (303), the top joint (308) is installed at the other end of the second section support rod (306), the small ring interface box (304) is installed on the outer wall of the second section support rod (306), the insulating seat (309) is arranged on two sides of the outer wall of the small ring interface box (304), the first small ring interface (310) is arranged on the insulating seat (309), the large ring interface (308) is arranged on the two sides of the outer wall of the second section support rod (306), and the locking nut (308) is arranged on the two sides of the large ring interface (308);
install ringlet antenna radiator (2) between first ringlet interface (310) and second ringlet interface (311) on collapsible supporting mechanism (3), ringlet antenna radiator (2) include fourth section antenna pole (201), second nut locking plug (202), third folding seat (203), fifth section antenna pole (204) and third nut locking plug (205), fourth section antenna pole (201) are connected with fifth section antenna pole (204) through third folding seat (203), second nut locking plug (202) are installed to the other end of fourth section antenna pole (201), third nut locking plug (205) are installed to the other end of fifth section antenna pole (204).
2. The foldable portable dual-loop antenna of claim 1, wherein the first antenna mast (107) and the second antenna mast (108) are movably connected with the first folding seat (103) through movable pins (110), and the second antenna mast (108) and the third antenna mast (109) are movably connected with the second folding seat (104) through movable pins (110).
3. The foldable portable dual-loop antenna of claim 1, wherein a first rubber cap (102) is provided on an outer wall of the other end of the first antenna mast (107), and a second rubber cap (105) is provided on an outer wall of the other end of the third antenna mast (109).
4. The foldable portable dual-loop antenna according to claim 1, characterized in that the fourth folding seat (303) is provided with a bellows (302) and a clasp (301).
5. The foldable portable dual-loop antenna of claim 1, wherein the fourth antenna mast (201) and the fifth antenna mast (204) are movably connected to the third folding seat (203) by a movable pin (110).
6. The foldable portable dual-loop antenna of claim 1, wherein the second nut lock plug (202) on the fourth antenna mast (201) is mounted in the second small loop interface (311) and the third nut lock plug (205) on the fifth antenna mast (204) is mounted in the first small loop interface (310).
7. The foldable portable dual loop antenna of claim 1, wherein the screw-cap BNC connector (307) on the foldable support mechanism (3) is connected with the screw-cap BNC socket (402) on the antenna tuning box (4).
8. The foldable portable dual-loop antenna of claim 1, wherein the BNC socket (401) on the antenna tuning box (4) is connected with the BNC plug (106) on the large-loop antenna radiator (1), and the first nut locking plug (101) on the large-loop antenna radiator (1) is connected with the large-loop interface (312) on the foldable support mechanism (3).
9. The foldable portable dual-loop antenna according to claim 1, characterized in that the small loop antenna radiator (2) is located above the inside of the large loop antenna radiator (1) and the small loop antenna radiator (2) are coplanar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322556243.0U CN220774753U (en) | 2023-09-20 | 2023-09-20 | Foldable portable double-ring antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322556243.0U CN220774753U (en) | 2023-09-20 | 2023-09-20 | Foldable portable double-ring antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220774753U true CN220774753U (en) | 2024-04-12 |
Family
ID=90613140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322556243.0U Active CN220774753U (en) | 2023-09-20 | 2023-09-20 | Foldable portable double-ring antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220774753U (en) |
-
2023
- 2023-09-20 CN CN202322556243.0U patent/CN220774753U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3192119A1 (en) | Excitation and use of guided surface wave modes on lossy media | |
| WO2017044268A1 (en) | Long distance transmission of offshore power | |
| CN105552559B (en) | A kind of double outlet car antennas | |
| CN104485518B (en) | Ultrashort wave folding type discone antenna | |
| EP3342019B1 (en) | Adaptation of energy consumption node for guided surface wave reception | |
| CN220774753U (en) | Foldable portable double-ring antenna | |
| US10333316B2 (en) | Wired and wireless power distribution coexistence | |
| CN201766168U (en) | Transmit-receive integrated antenna for high-frequency surface wave radar | |
| CN103268978B (en) | Miniaturization short wave broadband omnidirectional high elevation communication antenna | |
| CN104282982A (en) | Computer battery plate with built-tin antenna | |
| CN201689976U (en) | Ultrashort wave broadband antenna | |
| CN212323210U (en) | Vehicle-mounted short wave non-blind area antenna | |
| CN202633520U (en) | Omnidirectional multipolarization spaceborne radar antenna | |
| CN205488518U (en) | VHF frequency channel machine carries broadband antenna | |
| CN103247865B (en) | A kind of X-band wide beam circular polarized antenna for lunar surface rover | |
| CN202601836U (en) | Double-frequency omnidirectional antenna | |
| CN204289721U (en) | Ultrashort wave folding discone antenna | |
| CN201528047U (en) | Wide beam circular polarized antenna | |
| US10939305B2 (en) | Passive radio-frequency redirector device | |
| Dai et al. | Design of a broadband base station antenna based on tightly coupled structure | |
| CN215989187U (en) | Portable broadband antenna | |
| CN104466365A (en) | Short wave communication-in-moving resonant ring antenna | |
| CN114430101B (en) | Miniaturized no-blind-area short-wave frame dipole antenna | |
| CN203367468U (en) | Ultra short wave broadband sub- and center-fed antenna | |
| CN2149022Y (en) | Yagi aerial |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |