CN-224204352-U - Dipole antenna with electrically adjustable oscillator length

CN224204352UCN 224204352 UCN224204352 UCN 224204352UCN-224204352-U

Abstract

The utility model relates to the technical field of antennas, in particular to a dipole antenna with an electrically adjustable oscillator length, which comprises a fixing unit, a driving unit and a waterproof unit, wherein the fixing unit comprises a fixing column and a clamping piece, one end of the fixing column is fixedly connected with the clamping piece, the inside of the fixing column is hollow, the dipole antenna is connected with the fixing unit, the driving unit comprises a stepping motor and a synchronous device, the stepping motor is positioned in the fixing column and is fixedly connected with the fixing column, the synchronous device is in meshed connection with the output end of the stepping motor and is fixedly connected with the dipole antenna, the waterproof unit comprises a waterproof plate, the waterproof plate is positioned on the fixing column and is arranged in parallel with the stepping motor, and the adjusting unit is fixedly connected with the dipole antenna and is fixedly connected with the driving unit.

Inventors

ZHANG YINGHUA
LI ZENG
ZHANG KEJIAN
WANG HUAN
PEI JIANGUO

Assignees

中国人民警察大学(公安部国际执法合作学院、中国维和警察培训中心)

Dates

Publication Date: 20260505
Application Date: 20250606

Claims (10)

1. A dipole antenna having an electrically adjustable element length, comprising: The fixing unit comprises a fixing column and a clamping piece, one end of the fixing column is fixedly connected with the clamping piece, and the inside of the fixing column is hollow; The dipole antenna is connected with the fixed unit; The driving unit comprises a stepping motor and a synchronizing device, wherein the stepping motor is positioned in the fixed column, the stepping motor is fixedly connected with the fixed column, the synchronizing device is meshed with the output end of the stepping motor, and the synchronizing device is fixedly connected with the dipole antenna; The waterproof unit comprises a waterproof plate, and the waterproof plate is positioned on the fixed column and is arranged in parallel with the stepping motor; And the adjusting unit is fixedly connected with the dipole antenna and fixedly connected with the driving unit.
2. The dipole antenna as recited in claim 1, wherein said synchronization means comprises a drive bevel gear fixedly connected to said output end of said stepper motor and two driven bevel gears engaged on either side of said drive bevel gear.
3. The dipole antenna with the electrically adjustable oscillator length according to claim 2, wherein the adjusting unit comprises an adjusting rod, an adjusting nut, an angular contact bearing and a deep groove ball bearing, threads are axially arranged on the surface of the adjusting rod, one side of the adjusting rod, which is close to the driven bevel gear, is fixedly connected with an inner ring of the angular contact bearing, the adjusting rod is fixedly connected with the driven bevel gear, the adjusting nut is sleeved on the adjusting rod, and the inner ring of the deep groove ball bearing is fixedly connected with one side, which is far away from the driven bevel gear, of the adjusting rod.
4. The electrically adjustable dipole antenna as recited in claim 3, wherein said adjustment nut comprises a screw nut fixedly connected to said mounting flange, a rolling element disposed on said screw nut, and a threaded channel having a rolling element disposed thereon, said mounting flange being fixedly connected to said dipole antenna.
5. The dipole antenna as recited in claim 4 wherein said waterproof board comprises a waterproof housing, a waterproof baffle, a ventilation bottom plate and a dust screen, said waterproof housing is connected with said ventilation bottom plate, said waterproof baffle is disposed in said waterproof housing, and said waterproof baffle has a Z-shaped cross section, said waterproof baffle is disposed in a plurality of pairs, and said ventilation bottom plate and said dust screen are disposed in parallel opposition.
6. The dipole antenna as recited in claim 5 wherein said water-resistant baffles are mounted within said water-resistant housing in staggered overlapping relation in sequence from left to right with adjacent baffles defining a gap therebetween.
7. The electrically adjustable dipole antenna as defined in claim 6, wherein said waterproof board further comprises a drain opening, and wherein said waterproof housing has a drain opening formed in a lower surface thereof.
8. The dipole antenna as recited in claim 7 wherein said waterproof unit further comprises a spacer and a waterproof sheet, said waterproof sheet being provided in a plurality of said waterproof sheets fixedly connected to said stepper motor, said spacer being disposed between said stepper motor and said fixed posts, and said spacer being fixedly connected through said waterproof sheet.
9. The dipole antenna as recited in claim 8, further comprising a guide unit, wherein the guide unit comprises a chute and a slide rail, the fixed flange is provided with a slide rail, and the clamping member is provided with a chute.
10. The electrically adjustable dipole antenna as recited in claim 9, wherein said waterproof sheet is provided with an alumina ceramic coating.

Description

Dipole antenna with electrically adjustable oscillator length Technical Field The utility model relates to the technical field of antennas, in particular to a dipole antenna with an electrically adjustable oscillator length. Background Dipole antennas (Dipole antennas) are one of the most basic and widely used types of antennas in the field of wireless communication, and are composed of two symmetrical conductor oscillators, the operating frequency of which is directly related to the physical length of the oscillator by exciting radiation or reception of electromagnetic waves through a center feed point, and the length of a conventional Dipole is usually designed to be 1/2 of the operating wavelength (half-wave oscillator), thereby realizing high-efficiency energy conversion in a resonant state. However, the frequency response range of the existing dipole antenna is narrow, once the physical size is fixed, the working frequency band of the existing dipole antenna is strictly defined, and this characteristic becomes a significant bottleneck in the scenarios of multi-band communication, dynamic environment adaptation or frequency flexibility, and when a user needs to switch the frequency band to avoid interference or adapt to protocol changes, the existing dipole antenna is difficult to meet such requirements. Accordingly, there is a great need for a dipole antenna with an electrically adjustable element length to solve the problems of the prior art. Disclosure of utility model In view of this, the utility model provides a dipole antenna with an electrically adjustable dipole length, which aims to solve the problem of difficult frequency band switching of the existing dipole antenna. The utility model provides a dipole antenna with an electrically adjustable oscillator length, which comprises: The fixing unit comprises a fixing column and a clamping piece, one end of the fixing column is fixedly connected with the clamping piece, and the inside of the fixing column is hollow; The dipole antenna is connected with the fixed unit; The driving unit comprises a stepping motor and a synchronizing device, wherein the stepping motor is positioned in the fixed column, the stepping motor is fixedly connected with the fixed column, the synchronizing device is meshed with the output end of the stepping motor, and the synchronizing device is fixedly connected with the dipole antenna; The waterproof unit comprises a waterproof plate, and the waterproof plate is positioned on the fixed column and is arranged in parallel with the stepping motor; And the adjusting unit is fixedly connected with the dipole antenna and fixedly connected with the driving unit. Further, the synchronization device comprises a driving bevel gear and two driven bevel gears, wherein the driving bevel gear is fixedly connected with the output end of the stepping motor, and the two driven bevel gears are meshed with the two sides of the driving bevel gear. Further, the adjusting unit comprises an adjusting rod, an adjusting nut, an angular contact bearing and a deep groove ball bearing, threads are axially arranged on the surface of the adjusting rod, one side, close to the driven bevel gear, of the adjusting rod is fixedly connected with the inner ring of the angular contact bearing, the adjusting rod is fixedly connected with the driven bevel gear, the adjusting nut is sleeved on the adjusting rod, and the inner ring of the deep groove ball bearing is fixedly connected with one side, away from the driven bevel gear, of the adjusting rod. Further, the adjusting nut comprises a screw nut, a fixing flange, rolling bodies and a threaded channel, wherein the screw nut is fixedly connected with the fixing flange, the threaded channel is formed in the screw nut, the rolling bodies are arranged on the threaded channel, and the fixing flange is fixedly connected with the dipole antenna. Further, waterproof board includes waterproof casing, waterproof baffle, ventilation bottom plate and dust screen, waterproof casing connects ventilation bottom plate, be provided with in the waterproof casing waterproof baffle, just waterproof baffle's transversal Z style of calligraphy of personally submitting is provided with a plurality of, ventilation bottom plate with the parallel opposition setting of dust screen. Furthermore, the waterproof baffles are sequentially staggered from left to right and overlapped and installed inside the waterproof shell, and certain gaps are reserved between adjacent waterproof baffles in overlapping. Further, the waterproof board further comprises a water outlet, and the lower surface of the waterproof shell is provided with the water outlet. Further, the waterproof unit further comprises a plurality of isolating plates and waterproof sheets, the waterproof sheets are fixedly connected with the stepping motor, the isolating plates are arranged between the stepping motor and the fixing columns, and the isolating plates are fixedly connecte