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CN-122027028-A - Satellite-borne device

CN122027028ACN 122027028 ACN122027028 ACN 122027028ACN-122027028-A

Abstract

The satellite-borne device comprises a baseband component and Ka antennas, wherein first optical modules in each uplink antenna and each downlink antenna are respectively connected with the first optical modules of the baseband component in a bidirectional manner, and other optical modules except the first optical modules of each uplink antenna and each downlink antenna are connected with other optical modules except the first optical modules of the baseband component in a unidirectional manner. By means of the asymmetric connection among the downlink antenna, the uplink antenna and the baseband assembly, the cost of an optical module and the cost of an optical fiber are saved, and the weight of the satellite-borne device is reduced.

Inventors

  • LIU YANFENG

Assignees

  • 北京蓝塔光传智能科技有限公司

Dates

Publication Date
20260512
Application Date
20260309

Claims (10)

  1. 1. The satellite-borne device comprises a baseband component and a Ka antenna, and is characterized in that the Ka antenna comprises an m-plane uplink antenna and an n-plane downlink antenna, each of the uplink antenna and the downlink antenna comprises x optical modules, the baseband component comprises an xn+m optical modules, wherein m, n and x are integers, The first optical modules of each uplink antenna in the m-plane uplink antennas are respectively connected with m first optical modules of the baseband assembly in a bidirectional manner and used for bidirectional signal transmission, and the first optical modules of each downlink antenna in the n-plane downlink antennas are respectively connected with n first optical modules of the baseband assembly in a bidirectional manner and used for bidirectional signal transmission, wherein the m first optical modules of the baseband assembly and the n first optical modules are different optical modules; The other (x-1) optical modules of each of the m-plane uplink antennas except the first optical module are connected with the other m (x-1) optical modules of the baseband assembly except the first optical module in a unidirectional manner, and are used for transmitting signals in the direction from the Ka antenna to the baseband assembly, and the other (x-1) optical modules of each of the n-plane downlink antennas except the first optical module are connected with the other n (x-1) optical modules of the baseband assembly except the first optical module in a unidirectional manner, and are used for transmitting signals in the direction from the baseband assembly to the Ka antenna.
  2. 2. The on-board device of claim 1, wherein n is an integer greater than m.
  3. 3. The device of claim 2, wherein the Ka-antenna comprises a 1-plane uplink antenna and a 2-plane downlink antenna, each of the uplink antenna and the downlink antenna comprises 8 optical modules, the baseband assembly comprises 17 optical modules, The first optical module of the 1-plane uplink antenna is in bidirectional connection with 1 first optical module of the baseband assembly and is used for bidirectional signal transmission, the first optical module of each of the 2-plane downlink antennas is respectively connected with 2 first optical modules of the baseband assembly and is used for bidirectional signal transmission, and the 1 first optical module and the 2 first optical modules of the baseband assembly are different optical modules; the other 7 optical modules except the first optical module of the 1-plane uplink antenna are connected with the other 7 optical modules except the first optical module of the baseband assembly in a unidirectional mode, and are used for transmitting signals from the Ka antenna to the baseband assembly, and the other 7 optical modules except the first optical module of each of the 2-plane downlink antennas are connected with the other 14 optical modules except the first optical module of the baseband assembly in a unidirectional mode, and are used for transmitting signals from the baseband assembly to the Ka antenna.
  4. 4. The device of claim 2, wherein the Ka-antenna comprises a 2-plane uplink antenna and a 4-plane downlink antenna, each of the uplink and downlink antennas comprises 8 optical modules, the baseband assembly comprises 34 optical modules, The first optical module of each uplink antenna in the 2-plane uplink antenna is in bidirectional connection with 2 first optical modules of the baseband assembly and is used for bidirectional signal transmission, the first optical module of each downlink antenna in the 4-plane downlink antenna is respectively in bidirectional connection with 4 first optical modules of the baseband assembly and is used for bidirectional signal transmission, and the 2 first optical modules of the baseband assembly and the 4 first optical modules are different optical modules; The other 7 optical modules of each of the 2-plane uplink antennas except the first optical module are connected with the other 14 optical modules of the baseband assembly except the first optical module in a unidirectional manner, and are used for transmitting signals from the Ka antenna to the baseband assembly, and the other 7 optical modules of each of the 4-plane downlink antennas except the first optical module are connected with the other 28 optical modules of the baseband assembly except the first optical module in a unidirectional manner, and are used for transmitting signals from the baseband assembly to the Ka antenna.
  5. 5. The device of claim 1, wherein the device comprises a plurality of sensors, The Ka antenna also comprises m standby uplink antennas and n standby downlink antennas, each standby uplink antenna and each standby downlink antenna comprises x standby optical modules, the baseband component also comprises xn+m standby optical modules, The first standby optical modules of each standby uplink antenna in the m-plane standby uplink antennas are respectively connected with m first standby optical modules of the baseband assembly in a bidirectional manner and are used for bidirectional signal transmission, and the first standby optical modules of each standby downlink antenna in the n-plane standby downlink antennas are respectively connected with n first standby optical modules of the baseband assembly in a bidirectional manner and are used for bidirectional signal transmission, wherein the m first standby optical modules of the baseband assembly and the n first standby optical modules are different optical modules; The other (x-1) standby optical modules except the first standby optical module of each standby uplink antenna in the m-plane standby uplink antennas are connected with the other m (x-1) standby optical modules except the first standby optical module of the baseband assembly in a unidirectional manner and are used for transmitting signals from the Ka antenna to the baseband assembly, and the other (x-1) standby optical modules except the first standby optical module of each standby downlink antenna in the n-plane standby downlink antennas are connected with the other n (x-1) standby optical modules except the first standby optical module of the baseband assembly in a unidirectional manner and are used for transmitting signals from the baseband assembly to the Ka antenna.
  6. 6. The on-board apparatus of claim 1, wherein the optical module of the Ka antenna and the optical module of the baseband assembly are both 25Gbps optical modules.
  7. 7. The on-board apparatus of claim 1, wherein the baseband assembly and the Ka antenna are connected using a CPRI interface.
  8. 8. The device of claim 7, wherein bidirectional connections between a first optical module of each of the m-plane uplink antennas and m first optical modules of the baseband assembly and between a first optical module of each of the n-plane downlink antennas and n first optical modules of the baseband assembly are used to implement a main service channel and a management channel between the baseband assembly and the Ka-antenna, wherein unidirectional connections between other (x-1) optical modules of each of the m-plane uplink antennas, except for the first optical module, and other m (x-1) optical modules of the baseband assembly, except for the first optical module, and the other (x-1) optical modules of each of the n-plane downlink antennas, except for the first optical module, are used to implement the baseband service channel and the data service channel between the baseband assembly and the main service channel according to the unidirectional connections between the other n (x-1) optical modules of the auxiliary assembly, except for the first optical module.
  9. 9. The on-board device of claim 8, wherein the bi-directional connection is achieved by two fiber optic strands and the unidirectional connection is achieved by one fiber optic strand.
  10. 10. The on-board apparatus of claim 9, wherein the synchronization LOSs of signal LOS state and the connection LOSs of signal Link state of the fiber optic connection of the secondary service channel are masked.

Description

Satellite-borne device Technical Field The invention relates to the technical field of satellite-borne antenna interfaces, in particular to a satellite-borne device. Background For a satellite-borne system, the Ka antenna with satellite-to-ground connection has the characteristic of asymmetric downlink and uplink bandwidths, and the array element spacing and the chip size also determine that the downlink antenna and the uplink antenna are array division planes. However, the optical fiber connection between the antenna and the baseband is generally a symmetrical wire harness, which causes great resource waste for the satellite-borne system limited by factors such as load volume, weight, power consumption and the like. Disclosure of Invention In view of this, the present invention provides a satellite-borne device that saves optical module costs as well as optical fiber costs by designing connections between asymmetric downlink antennas, uplink antennas, and baseband components. The satellite-borne device according to the embodiment of the invention comprises a baseband component and a Ka antenna, and is characterized in that the Ka antenna comprises an m-plane uplink antenna and an n-plane downlink antenna, each of the uplink antenna and the downlink antenna comprises x optical modules, the baseband component comprises xn+m optical modules, wherein m, n and x are integers, The first optical modules of each uplink antenna in the m-plane uplink antennas are respectively connected with m first optical modules of the baseband assembly in a bidirectional manner and used for bidirectional signal transmission, and the first optical modules of each downlink antenna in the n-plane downlink antennas are respectively connected with n first optical modules of the baseband assembly in a bidirectional manner and used for bidirectional signal transmission, wherein the m first optical modules of the baseband assembly and the n first optical modules are different optical modules; The other (x-1) optical modules of each of the m-plane uplink antennas except the first optical module are connected with the other m (x-1) optical modules of the baseband assembly except the first optical module in a unidirectional manner, and are used for transmitting signals in the direction from the Ka antenna to the baseband assembly, and the other (x-1) optical modules of each of the n-plane downlink antennas except the first optical module are connected with the other n (x-1) optical modules of the baseband assembly except the first optical module in a unidirectional manner, and are used for transmitting signals in the direction from the baseband assembly to the Ka antenna. Optionally, n is an integer greater than m. Optionally, the Ka antenna comprises a 1-plane uplink antenna and a 2-plane downlink antenna, each of the 1-plane uplink antenna and the 2-plane downlink antenna comprises 8 optical modules, the baseband assembly comprises 17 optical modules, The first optical module of the 1-plane uplink antenna is in bidirectional connection with 1 first optical module of the baseband assembly and is used for bidirectional signal transmission, the first optical module of each of the 2-plane downlink antennas is respectively connected with 2 first optical modules of the baseband assembly and is used for bidirectional signal transmission, and the 1 first optical module and the 2 first optical modules of the baseband assembly are different optical modules; the other 7 optical modules except the first optical module of the 1-plane uplink antenna are connected with the other 7 optical modules except the first optical module of the baseband assembly in a unidirectional mode, and are used for transmitting signals from the Ka antenna to the baseband assembly, and the other 7 optical modules except the first optical module of each of the 2-plane downlink antennas are connected with the other 14 optical modules except the first optical module of the baseband assembly in a unidirectional mode, and are used for transmitting signals from the baseband assembly to the Ka antenna. Optionally, the Ka antenna comprises a 2-plane uplink antenna and a 4-plane downlink antenna, each of the two antennas comprises 8 optical modules, the baseband assembly comprises 34 optical modules, The first optical module of each uplink antenna in the 2-plane uplink antenna is in bidirectional connection with 2 first optical modules of the baseband assembly and is used for bidirectional signal transmission, the first optical module of each downlink antenna in the 4-plane downlink antenna is respectively in bidirectional connection with 4 first optical modules of the baseband assembly and is used for bidirectional signal transmission, and the 2 first optical modules of the baseband assembly and the 4 first optical modules are different optical modules; The other 7 optical modules of each of the 2-plane uplink antennas except the first optical module are connected with the other 14