Broadband omnidirectional ceiling antenna

Abstract

The utility model discloses a broadband omnidirectional ceiling antenna, and belongs to the field of antennas. The broadband omnidirectional ceiling antenna provided by the utility model comprises a reflection bottom plate, an oscillator assembly and a feed assembly, the oscillator assembly is installed above the reflection bottom plate, the oscillator assembly comprises a cup-shaped oscillator and a spectrum spreading sheet, the cup-shaped oscillator encloses an accommodating space with a top opening, and the spectrum spreading sheet is connected with the cup-shaped oscillator and is arranged at the opening position of the accommodating space; the feed assembly comprises a connecting seat, an insulating pad and a coaxial cable, the connecting seat is fixed with the reflection bottom plate, the connecting seat is of a hollow structure, the coaxial cable penetrates through a hollow area of the connecting seat to be connected with the cup-shaped vibrator, and the insulating pad is arranged on the periphery of the coaxial cable in a sleeving mode and clamped between the cup-shaped vibrator and the connecting seat. According to the utility model, the oscillator is designed to be of a cup-shaped structure with an opening at the top, and the spread spectrum sheet is arranged at the opening at the top of the oscillator to carry out spread spectrum processing on signals, so that the oscillator can cover frequency bands of 698-806 MHz and 3700-4200 MHz, and spread spectrum capacity expansion of indoor distributed communication network coverage is realized.

Description

Technical Field

[0001] The utility model belongs to the field of antennas, in particular to a broadband omnidirectional ceiling antenna. Background Art

[0002] Omnidirectional ceiling antennas are the most important and widely used antennas for indoor distribution and coverage of mobile communication networks. With the development of the new generation of mobile communication technology, indoor densely populated places (airport terminals, subway stations, bus station waiting rooms, railway station waiting rooms, shopping malls, amusement parks, large restaurants, exhibition halls, etc.) have higher and higher requirements for signal coverage area and coverage strength. Bandwidth has a crucial impact on the information transmission capacity of the coverage range. The existing omnidirectional ceiling antennas are mostly designed for use in the frequency band of 800-2700MHz or 800-3700MHz, lacking the performance of low frequency band (698-806MHz) and high frequency band 3700-4200MHz. At 698-806MHz and 3700-4200MHz, the radiation pattern and circuit indicators are difficult to meet the use requirements.

[0003] Therefore, it is necessary to provide a broadband omnidirectional ceiling antenna to solve the above problems. Utility Model Content

[0004] In view of the above-mentioned defects of the prior art, the utility model provides a broadband omnidirectional ceiling antenna, optimizes the structure of the antenna, and can cover the 698-806MHz and 3700-4200MHz frequency bands, thereby achieving effective spectrum expansion and capacity expansion of indoor distributed communication network coverage.

[0005] In order to solve the above problems, the technical solution of the utility model is:

[0006] A broadband omnidirectional ceiling antenna, comprising:

[0007] Reflective base plate;

[0008] A vibrator assembly, the vibrator assembly is installed above the reflective bottom plate, the vibrator assembly includes a cup-shaped vibrator and a spectrum spreading sheet, the cup-shaped vibrator forms a receiving space with an opening at the top, the spectrum spreading sheet is connected to the cup-shaped vibrator and is arranged at the opening position of the receiving space, and is used to perform spectrum spreading processing on the signal;

[0009] The feeding assembly includes a connecting seat, an insulating pad and a coaxial cable. The connecting seat is fixed to the reflecting bottom plate. The connecting seat is a hollow structure. The coaxial cable passes through the hollow area of ​​the connecting seat and is connected to the cup-shaped vibrator. The insulating pad is sleeved on the periphery of the coaxial cable and clamped between the cup-shaped vibrator and the connecting seat.

[0010] As an improvement, the cup-shaped vibrator includes an upper conical portion, a lower conical portion and an annular portion connecting the upper conical portion and the lower conical portion, the upper conical portion, the lower conical portion and the annular portion cooperate to form the receiving space, the upper conical portion forms the top opening of the receiving space, and the spectrum expander is connected to the upper conical portion.

[0011] As an improvement, the spectrum extending sheet and the upper conical portion are formed integrally.

[0012] As an improvement, the spectrum expanding sheet is anchored to the upper conical portion by means of blind rivets, the bottom of the spectrum expanding sheet is attached to the inner surface of the upper conical portion, and the top is suspended.

[0013] As an improvement, there are multiple frequency spreading plates, and the multiple frequency spreading plates are distributed in a ring array along the axis of the cup-shaped oscillator.

[0014] As an improvement, one end of the frequency extending plate away from the upper conical portion extends obliquely toward the axial direction of the cup-shaped vibrator.

[0015] As an improvement, the broadband omnidirectional ceiling antenna also includes a support member, one end of which is anchored to the cup-shaped vibrator by a hollow rivet, and the other end of which is anchored to the reflective bottom plate by a hollow rivet, and the support member is used to support the cup-shaped vibrator.

[0016] As an improvement, there are multiple support members, and the multiple support members are distributed in a ring array along the axis of the cup-shaped vibrator.

[0017] As an improvement, the feeding assembly further comprises a coaxial connector, which is located at an end of the coaxial cable away from the cup-shaped vibrator and is used to connect the coaxial cable with an external device.

[0018] As an improvement, the radiation frequency band of the broadband omnidirectional ceiling antenna includes 698-806 MHz and 3700-4200 MHz.

[0019] The beneficial effects of the utility model are:

[0020] The oscillator is designed as a cup-shaped structure with an opening at the top. The oscillator is supported on a reflective bottom plate. A spectrum spreader is set at the top opening of the oscillator to spread the signal so that it can cover the 698-806MHz and 3700-4200MHz frequency bands, achieving effective spectrum expansion and capacity expansion for indoor distributed communication network coverage. The antenna has a simple structure and is easy to install and maintain in actual use scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A three-dimensional structural diagram of the broadband omnidirectional ceiling antenna provided in Example 1;

[0022] Figure 2 for Figure 1 A front view of the broadband omnidirectional ceiling antenna shown;

[0023] Figure 3 express Figure 1 The structural diagram of the spectrum spreading chip shown;

[0024] Figure 4 express Figure 1 A top view of the broadband omnidirectional ceiling antenna shown;

[0025] Figure 5 A three-dimensional structural diagram showing a broadband omnidirectional ceiling antenna provided in Example 2;

[0026] Figure 6 express Figure 5 A top view of the broadband omnidirectional ceiling antenna shown;

[0027] Figure 7 It represents the vertical radiation pattern of the broadband omnidirectional ceiling antenna provided by the utility model.

[0028] Figure 8 The horizontal plane radiation pattern of the broadband omnidirectional ceiling antenna provided by the utility model is shown. DETAILED DESCRIPTION

[0029] In the description of the present invention, it is necessary to understand that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred elements must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] The embodiments of the present utility model are further described below in conjunction with the accompanying drawings.

[0031] Example 1

[0032] See also Figure 1-Figure 4 The present embodiment provides a broadband omnidirectional ceiling antenna, including a reflective base plate 10 , a dipole assembly 20 , a feeding assembly 30 and a support member 40 .

[0033] The reflective base plate 10 is selected to be a disc-shaped structure, which serves as a mounting carrier for other components of the broadband omnidirectional ceiling antenna. The reflective base plate 10 can also play a role in reflecting signals, thereby improving the signal reception quality and propagation distance by reflecting and adjusting the signal direction, shape and enhancing the signal strength, reducing interference and noise, and improving the stability and reliability of the signal.

[0034] The vibrator assembly 20 is installed above the reflective bottom plate 10. The vibrator assembly 20 includes a cup-shaped vibrator 21 and a spectrum spreader 22. The cup-shaped vibrator 21 forms a receiving space with an opening at the top. The spectrum spreader 22 is connected to the cup-shaped vibrator 21 and is arranged at the opening position of the receiving space for performing spectrum spread processing on the signal.

[0035] Specifically, the cup-shaped vibrator 21 includes an upper conical portion 211, a lower conical portion 212 and an annular portion 213 connecting the upper conical portion 211 and the lower conical portion 212. The upper conical portion 211, the lower conical portion 212 and the annular portion 213 cooperate to form the receiving space. The upper conical portion 211 forms the top opening of the receiving space, and the spectrum expander 22 is connected to the upper conical portion 211.

[0036] In this embodiment, the spectrum spreading sheet 22 and the upper conical portion 211 are anchored by blind rivets 50 , and the bottom of the spectrum spreading sheet 22 is attached to the inner surface of the upper conical portion 211 , and the top is suspended.

[0037] There are multiple frequency spreading pieces 22, and the multiple frequency spreading pieces 22 are distributed in a circular array along the axis of the cup-shaped vibrator 21. In this embodiment, the number of the frequency spreading pieces 22 is selected to be four.

[0038] One end of the frequency extending plate 22 away from the upper conical portion 211 extends obliquely toward the axial direction of the cup-shaped vibrator 21 .

[0039] The feeding assembly 30 includes a connecting seat 31, an insulating pad 32, a coaxial cable 33 and a coaxial connector 34. The connecting seat 31 is fixed to the reflective base plate 10. The connecting seat 31 is a hollow structure. The coaxial cable 33 passes through the hollow area of ​​the connecting seat 31 and is connected to the cup-shaped vibrator 21. The insulating pad 32 is sleeved on the periphery of the coaxial cable 33 and clamped between the cup-shaped vibrator 21 and the connecting seat 31 to play an insulating barrier role. The coaxial connector 34 is located at one end of the coaxial cable 33 away from the cup-shaped vibrator 21, and is used to realize the connection between the coaxial cable 33 and an external device.

[0040] One end of the support member 40 is anchored to the cup-shaped vibrator 21 by a hollow rivet, and the other end is anchored to the reflective bottom plate 10 by a hollow rivet, and the support member 40 is used to support the cup-shaped vibrator 21. As an improvement, the number of the support members 40 is multiple, and the multiple support members 40 are distributed in a circular array along the axis of the cup-shaped vibrator 21, providing a stable support effect in all directions for the cup-shaped vibrator 21, and improving the installation stability of the cup-shaped vibrator 21.

[0041] Example 2

[0042] See also Figure 5-Figure 6 This embodiment provides a broadband omnidirectional ceiling antenna. The difference from Embodiment 1 is that the spectrum spreader 22 and the upper conical portion 211 are integrally formed, which can ensure the connection stability between the spectrum spreader 22 and the upper conical portion 211, and at the same time, the installation operation of the spectrum spreader 22 is omitted, which can simplify the installation process.

[0043] The other structures of the broadband omnidirectional ceiling antenna are consistent with those in Example 1, and are not described in detail in this embodiment.

[0044] Please refer to Figure 7-Figure 8 The utility model designs the vibrator as a cup-shaped structure with an opening at the top. The vibrator is supported on a reflective bottom plate. A spectrum expansion plate is set at the top opening of the vibrator to perform spectrum expansion on the signal, so that it can cover the 698-806MHz and 3700-4200MHz frequency bands, and achieve effective spectrum expansion and capacity expansion for indoor distributed communication network coverage. The circuit indicators (standing wave ratio) and directional diagram indicators (gain, horizontal plane roundness, vertical plane angle) of the antenna meet the use requirements of various communication operators. In addition, the antenna has a simple structure, which is convenient for installation and maintenance in actual use scenarios.

[0045] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A broadband omnidirectional ceiling antenna, characterized in that: include: Reflective base plate; A vibrator assembly, the vibrator assembly is installed above the reflective bottom plate, the vibrator assembly includes a cup-shaped vibrator and a spectrum spreading sheet, the cup-shaped vibrator forms a receiving space with an opening at the top, the spectrum spreading sheet is connected to the cup-shaped vibrator and is arranged at the opening position of the receiving space, and is used to perform spectrum spreading processing on the signal; The feeding assembly includes a connecting seat, an insulating pad and a coaxial cable. The connecting seat is fixed to the reflecting bottom plate. The connecting seat is a hollow structure. The coaxial cable passes through the hollow area of ​​the connecting seat and is connected to the cup-shaped vibrator. The insulating pad is sleeved on the periphery of the coaxial cable and clamped between the cup-shaped vibrator and the connecting seat.

2. The broadband omnidirectional ceiling antenna according to claim 1, characterized in that: The cup-shaped vibrator includes an upper conical portion, a lower conical portion and an annular portion connecting the upper conical portion and the lower conical portion. The upper conical portion, the lower conical portion and the annular portion cooperate to form the receiving space. The upper conical portion forms a top opening of the receiving space, and the spectrum expander is connected to the upper conical portion.

3. The broadband omnidirectional ceiling antenna according to claim 2, characterized in that: The frequency extending sheet and the upper conical portion are integrally formed.

4. The broadband omnidirectional ceiling antenna according to claim 2, characterized in that: The spectrum expanding sheet is anchored to the upper conical portion by means of blind rivets, the bottom of the spectrum expanding sheet is attached to the inner surface of the upper conical portion, and the top is suspended.

5. The broadband omnidirectional ceiling antenna according to claim 3 or 4, characterized in that: There are multiple frequency spreading plates, and the multiple frequency spreading plates are distributed in a circular array along the axis of the cup-shaped vibrator.

6. The broadband omnidirectional ceiling antenna according to claim 5, characterized in that: One end of the frequency extending plate away from the upper tapered portion extends obliquely toward the axial direction of the cup-shaped vibrator.

7. The broadband omnidirectional ceiling antenna according to claim 1, characterized in that: The broadband omnidirectional ceiling antenna also includes a support member, one end of which is anchored to the cup-shaped vibrator through a hollow rivet, and the other end of which is anchored to the reflective bottom plate through a hollow rivet. The support member is used to support the cup-shaped vibrator.

8. The broadband omnidirectional ceiling antenna according to claim 7, characterized in that: There are multiple support members, and the multiple support members are distributed in a ring array along the axis of the cup-shaped vibrator.

9. The broadband omnidirectional ceiling antenna according to claim 1, characterized in that: The feeding assembly also includes a coaxial connector, which is located at an end of the coaxial cable away from the cup-shaped vibrator and is used to connect the coaxial cable to an external device.

10. The broadband omnidirectional ceiling antenna according to claim 1, characterized in that: The radiation frequency bands of the broadband omnidirectional ceiling antenna include 698-806 MHz and 3700-4200 MHz.

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