CN-116845537-B - Composite antenna

CN116845537BCN 116845537 BCN116845537 BCN 116845537BCN-116845537-B

Abstract

The embodiment of the invention provides a composite antenna which comprises a plurality of antennas which are sequentially stacked from top to bottom according to the working frequency of the antennas, wherein the plurality of antennas comprise a first antenna group positioned at the upper part and a second antenna group positioned at the lower part, the first antenna group and the second antenna group are respectively and electrically connected with a base, each antenna group comprises a radiator, a supporting piece for bearing the radiator, a feed plate and a choke device which are electrically connected with the radiator, and each antenna in the second antenna group shares the second radiator and shares the first radiator of the first antenna group. By sharing the second radiator by each antenna in the second antenna group and sharing the first radiator by the first antenna group by the second antenna group, the size of the composite antenna can be reduced, thereby realizing miniaturization of the composite antenna. Mutual interference between adjacent antennas is reduced through the choke device, and each antenna is integrated on the composite antenna, so that the multifunction of the composite antenna is realized.

Inventors

ZHONG YANG
JI QING
WANG GUANJUN
LU CHAO
KONG BIN
REN CHAOCHAO
LU SAISAI

Assignees

上海海积信息科技股份有限公司

Dates

Publication Date: 20260505
Application Date: 20230628

Claims (9)

1. A composite antenna is characterized by comprising a plurality of antennas which are sequentially stacked from top to bottom according to the working frequency of the antenna from low to high; the plurality of antennas comprise a first antenna group positioned at the upper part and a second antenna group positioned at the lower part, wherein the first antenna group and the second antenna group are respectively and electrically connected with the base; Each antenna group comprises a radiator, a supporting piece for bearing the radiator, a feed plate and a choke device, wherein the feed plate and the choke device are electrically connected with the radiator; each antenna in the second antenna group shares a second radiator and shares a first radiator of the first antenna group; Wherein each antenna in the second antenna group shares a second radiator and shares a first radiator of the first antenna group, comprising: The antenna comprises a first antenna group, a second antenna group and a third antenna group, wherein the first antenna group sequentially comprises a space antenna and a data transmission antenna from top to bottom, the space antenna comprises a plurality of spiral radiator arms, and the data transmission antenna comprises a choke sleeve, a metal pipe, a choke device, a first upper radiating arm, a first lower radiating arm, a second upper radiating arm, a second lower radiating arm and a feed point which are sequentially arranged from top to bottom; The second antenna group comprises an AIS antenna and a VHF/UHF antenna, the AIS antenna comprises a feed plate, a second radiator and a support piece, the VHF/UHF antenna comprises the feed plate, the second radiator and the support piece are shared by the AIS antenna and the VHF/UHF antenna, and The AIS antenna and the VHF/UHF antenna adopt a single loading mode, and share a first radiator and a second radiator of the first antenna group through coupling, wherein the first radiator comprises a radiator of the antenna, and a first upper radiating arm, a first lower radiating arm, a second upper radiating arm and a second lower radiating arm of the data transmission antenna.
2. The antenna of claim 1, wherein the antenna is located at a top end of the composite antenna; the support piece of the space-borne antenna is a cone, and the choke device of the space-borne antenna is arranged at the lower end of the feed plate of the space-borne antenna.
3. The antenna of claim 1, wherein the data transmission antenna adopts radiating arms which are arranged in a matrix form in a crossing way, and each radiating arm adopts a parallel feed mode; The lower end of the data transmission antenna is provided with a corresponding choke device.
4. The antenna of claim 3, wherein the antenna comprises, A choke is arranged between the first lower radiating arm and the second lower radiating arm.
5. The antenna of claim 1, wherein the support shared by the AIS antenna and the VHF/UHF antenna is a cylinder, and the second radiator shared by the AIS antenna and the VHF/UHF antenna is uniformly wound on the cylinder; And the feeder line of the antenna passes through the cylinder and is electrically connected with the base.
6. The antenna of any of claims 1-5, further comprising a beidou linear antenna disposed between the first antenna set and the second antenna set; The Beidou first-line through antenna adopts a low-profile microstrip antenna; the Beidou first-line antenna comprises a plurality of third radiators with laminated structures, wherein a plurality of raised square patches are uniformly distributed on the edges of the third radiators.
7. The antenna of claim 6, wherein the feed board of the beidou linear antenna is provided with an active circuit on a surface close to the second antenna group; The second radiator is connected with a feed plate of the Beidou linear antenna.
8. The antenna of claim 6, further comprising a 5G antenna disposed on the base; The third upper radiating arm of the 5G antenna comprises at least one slot, and the third lower radiating arm is embedded in the slot.
9. The antenna of claim 8, further comprising a WIFI antenna disposed on the base side-by-side across the 5G antenna; the WIFI module adopts a short circuit branch joint mode.

Description

Composite antenna Technical Field The embodiment of the invention relates to the technical field of communication, in particular to a composite antenna. Background With the continuous development of wireless communication technology, communication devices are continuously developed, and communication requirements need to meet the requirements of communication in various frequency bands and multifunctionality. At present, because the antennas have the defects of singleness, few functions and large volume, if the requirements of multifunctional wireless communication are met, multiple groups of antennas are needed, and the space occupied by the antennas is larger. In summary, on the premise of how to have multiple functions, the miniaturization of the antenna is a problem to be solved. Disclosure of Invention The embodiment of the invention provides a composite antenna, which is used for solving the problem of large space occupied by antennas caused by the realization of multifunctional wireless communication by a plurality of groups of antennas in the prior art. In a first aspect, the embodiment of the invention provides a composite antenna, which comprises a plurality of antennas which are arranged in a stacked manner from top to bottom in sequence according to the working frequency of the antennas, wherein the plurality of antennas comprise a first antenna group positioned at the upper part and a second antenna group positioned at the lower part, the first antenna group and the second antenna group are respectively and electrically connected with a base, each antenna group comprises a radiator, a supporting piece for bearing the radiator, a feed plate and a choke device which are electrically connected with the radiator, and each antenna in the second antenna group shares the second radiator and shares the first radiator of the first antenna group. According to the technical scheme, the second radiator is shared by all the antennas in the second antenna group, and the first radiator of the first antenna group is shared by the second antenna group, so that the size of the composite antenna can be reduced, and the miniaturization of the composite antenna is realized. Mutual interference between adjacent antennas is reduced through the choke device, and each antenna is integrated on the composite antenna, so that the multifunction of the composite antenna is realized. Optionally, the first antenna group comprises an antenna and a data transmission antenna, and the second antenna group comprises an AIS antenna and a VHF/UHF antenna. Optionally, the antenna is located at the top end of the composite antenna, the support piece of the antenna is cone, the radiator of the antenna is a plurality of spiral radiating arms, and the choke device of the antenna is arranged at the lower end of the feed plate of the antenna. In the technical scheme, the antenna is positioned at the top end of the composite antenna, so that the antenna has a good radiation effect. The choke device not only has the function of supporting the antenna, but also reduces the problem of mutual interference between the antenna and the data transmission antenna. The radiator of the antenna is provided with the plurality of spiral radiating arms, so that the antenna has a better gain high-axis ratio. Optionally, the data transmission antenna adopts radiation arms which are arranged in a matrix form in a crossing way, each radiation arm adopts a parallel feed mode, and the lower end of the data transmission antenna is provided with a corresponding choke device. In the technical scheme, the data transmission antenna adopts the radiation arms which are arranged in a matrix mode in a crossing way, and each radiation arm adopts a parallel feed mode, so that the data transmission antenna has better performance, wider bandwidth and more stable structure. The choke has the effect of reducing the influence on the other antennas. Optionally, each radiation arm of the data transmission antenna comprises a first upper radiation arm, a first lower radiation arm, a second lower radiation arm and a second upper radiation arm which are sequentially arranged from top to bottom, and a choke sleeve is arranged between the first lower radiation arm and the second lower radiation arm. Optionally, the support shared by the AIS antenna and the VHF/UHF antenna is a cylinder, the second radiator shared by the AIS antenna and the VHF/UHF antenna is uniformly wound on the cylinder, and the feeder line of the antenna through antenna and the feeder line of the data transmission antenna pass through the cylinder and are electrically connected with the base. The antenna comprises a first antenna group, a second antenna group, a first radiator, a second radiator, a third radiator and a plurality of square patches, wherein the first radiator is arranged between the first antenna group and the second antenna group, the first radiator is a low-profile microstrip antenna, the second