CN108964744B - A method for cascading backup rings of power amplifiers of communication satellite transponders - Google Patents
A method for cascading backup rings of power amplifiers of communication satellite transponders Download PDFInfo
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- CN108964744B CN108964744B CN201810695932.0A CN201810695932A CN108964744B CN 108964744 B CN108964744 B CN 108964744B CN 201810695932 A CN201810695932 A CN 201810695932A CN 108964744 B CN108964744 B CN 108964744B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18515—Transmission equipment in satellites or space-based relays
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18519—Operations control, administration or maintenance
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Abstract
一种通信卫星转发器功放备份环级联方法，利用两个功放备份环级联的方式，将不同舱板上功放备份环连接起来，实现了两个备份环中备份功放的共用，提高了备份使用效率，提高了转发器可靠性。
A method for cascading backup loops of power amplifiers of a communication satellite transponder, using the method of cascading two power amplifier backup loops to connect the power amplifier backup loops on different decks, realizing the sharing of backup power amplifiers in the two backup loops, and improving the backup efficiency. The use efficiency improves the reliability of the repeater.
Description
Technical Field
The invention relates to a communication satellite transponder power amplifier backup ring cascade method, and belongs to the technical field of communication satellite effective loads.
Background
In the reliability design of the repeater, the receiver and the power amplifier on the key channel need to be backed up, so that a backup ring switch matrix consisting of a certain number of microwave switches is designed at the input end and the output end of the key device. In order to ensure that the switching can be completed under any failure combination, special microwave switches (such as T-type, R-type and the like) are required to be arranged according to a certain sequence, and necessary internal connection is carried out to form a switch matrix backup ring.
In recent years, with the improvement of the capability of a satellite platform, the number of transponder channels increases from several channels to several tens of channels, and communication satellite operators generally require backup power amplifiers in different power amplifier backup rings to be shared as much as possible for economic benefit, so as to improve the backup efficiency (satellite communication (fourth edition of original book), rodi, mechanical industry press).
The traditional power amplifier backup ring design mainly aims at small-scale backup situations, such as 3: 2(2 master power amplifiers, 1 backup power amplifier) and 6: and 4, due to the space and layout limitations of the satellite platform, for example, one cabin board of the four platforms of eastern red supports 14 power amplifiers at most, and the backup power amplifiers cannot be shared in backup rings of different cabin boards. The service efficiency of the power amplifier is reduced, and the user requirements cannot be met.
Disclosure of Invention
The technical problem solved by the invention is as follows: the method for cascading the power amplifier backup rings of the communication satellite transponder overcomes the defects of the prior art, and connects the power amplifier backup rings on different deck boards by utilizing the cascading mode of the two power amplifier backup rings, so that the sharing of the backup power amplifiers in the two backup rings is realized, the backup use efficiency is improved, and the reliability of the transponder is improved.
The technical solution of the invention is as follows:
a power amplifier backup ring cascade method of a communication satellite transponder comprises the following steps:
s1, taking a plurality of microwave switches with four ports as a connecting switch, a node switch and a transfer switch respectively, taking the transfer switch which is not connected with the backup power amplifier as a main transfer switch, and taking the transfer switch which is connected with the backup power amplifier as a backup transfer switch;
s2, connecting the two ports of the main transfer switch, the two ports of the connecting switch and the node switch by using transmission lines to form a power amplifier backup ring; connecting one port of the standby transmission switch to one port of the node switch, and connecting the other port of the standby transmission switch to a standby power amplifier; the other ports of the node switches, which are not connected with the standby transfer switch, are connected with the main transfer switch or other node switches in the power amplifier backup ring; two ports of the connecting switch are connected with one power amplifier backup ring through a transmission line, and the other two ports are connected with the other power amplifier backup ring through a transmission line and are connected with a main transfer switch or a node switch in the power amplifier backup ring during connection;
and S3, connecting output multiplexer and master power amplifier on the other two ports of the main transfer switch and the backup transfer switch.
Furthermore, the number of the main transfer switches between the two node switches in the power amplifier backup ring is not more than two.
Furthermore, the number of the main transfer switches between the connecting switch and the node switch is not more than two.
Furthermore, the number of the connecting switches of the transfer switches or the node switches connected with the different power amplifier backup rings is 1.
Further, the microwave switch is T-shaped or R-shaped.
Furthermore, the power amplifier backup rings are two, namely a first power amplifier backup ring and a second power amplifier backup ring, and the two power amplifier backup rings are connected through a connecting switch; two ports of the connecting switch are respectively connected with one port of the two main transfer switches in the first power amplifier backup ring through a transmission line, and the other two ports of the connecting switch are respectively connected with one port of the two main transfer switches in the second power amplifier backup ring through a transmission line.
Further, the first power amplifier backup ring comprises two backup power amplifiers, a connecting switch, two node switches, four main transfer switches and two backup transfer switches, wherein the two node switches, the connecting switch and the four main transfer switches are connected to form a first annular passage, the two backup transfer switches are respectively connected to the two node switches, and the two backup power amplifiers are respectively connected to the two backup transfer switches.
Further, the second power amplifier backup ring comprises two backup power amplifiers, a connecting switch, a first node switch, a second node switch, a third node switch, ten main transfer switches and two backup transfer switches; dividing ten main transfer switches into three groups, wherein the first group comprises two main transfer switches, the second group comprises six main transfer switches, and the third group comprises two main transfer switches; connecting the connecting switch, the first node switch and the first group of main transfer switches to form a second annular passage; the first node switch, the second node switch, the third node switch and the second group of main transfer switches are connected to form a third annular path; the second node switch, the third node switch, the main transfer switch between the second node switch and the third group of main transfer switches are connected to form a fourth annular passage; and the second node switch and the third node switch are respectively connected with a standby transmission switch, and the two standby power amplifiers are respectively connected with the two standby transmission switches.
Furthermore, the number of the connecting switches of the transfer switches or the node switches connected with the different power amplifier backup rings is 1.
Further, the microwave switch is T-shaped or R-shaped.
Compared with the prior art, the invention has the advantages that:
(1) the method solves the problem of utilization rate of the backup power amplifier, connects different backup rings, realizes shared use of the backup power amplifier in different power amplifier backup rings, and has strong engineering application value.
(2) The method supports the backup power amplifier in one backup ring to be used as the master power amplifier under the condition of not increasing the total quantity of the backup power amplifiers, and the backup function is realized by the backup power amplifiers in other backup rings without reducing the reliability of the system. And remarkable economic benefit is brought to users.
(3) The method of the invention utilizes a connecting switch to connect different backup rings and supports the sharing of two backup power amplifiers in different backup rings, thereby realizing the maximum utilization efficiency of the microwave switch, saving the number of switches and reducing the design cost of the satellite transponder.
(4) The method meets the latest design requirements of satellite users and improves the market competitiveness of the domestic satellite transponder system.
(5) The method can be popularized to all communication satellite transponder products needing common backup, and the on-orbit service quality of the communication satellite is improved.
Drawings
Fig. 1 is 8:6 structure of backup ring;
fig. 2 shows the cascade before 14:12 backup ring structure;
fig. 3 is 8:6 backup ring and 14:12 backing up the structure after ring cascade;
fig. 4 shows two 10:8 backup ring cascade structure.
Detailed Description
The invention utilizes the mode of cascading two power amplifier backup rings to connect the power amplifier backup rings on different deck boards, realizes the sharing of the backup power amplifiers in the two backup rings, improves the backup use efficiency and improves the reliability of the repeater.
The method specifically comprises the following steps:
1. determining the number of main and standby power amplifiers of different deck boards according to the layout of the satellite communication deck: according to the layout space of the communication cabin, the power amplifiers of different cabin boards are respectively subjected to backup design, such as 8:6(8 power amplifiers, wherein 6 are main power amplifiers) backup design of a north board of the communication cabin, 14:12(14 power amplifiers, wherein 12 are main power amplifiers) power amplifier backup design of a south board and the like. Determining the cascade of backup rings:
and 2, a microwave R switch or a T switch is used as a connecting switch, and a waveguide or a cable is respectively connected with switches in two different power amplifier backup rings to complete the cascade design of the backup rings and realize the backup sharing in the different backup rings.
In order to make the objects, technical solutions and advantages of the method of the present invention more apparent, the method of the present invention is described in further detail below with reference to fig. 1, 2 and 3.
The power amplifier in the communication satellite transponder generally adopts a traveling wave tube power amplifier, and generally requires that the power amplifier has output power of more than 100W, working bandwidth of more than 500MHz and continuous startup service life of 15 years. In the power amplifier reliability design, a microwave switch, a cable or a waveguide is connected with a power amplifier to form a switch backup ring matrix, and the microwave switch generally adopts a T-type switch, an R-type switch and the like with high reliability, broadband and low insertion loss. The T-type switch is a switch with 4 ports and 3 positions, and the R-type switch is a switch with 4 ports and 4 positions. For example, 4 ports of a T-switch are respectively set to J1, J2, J3 and J4. The T-switch has four positions: position l represents J1-J2 pass, J3-J4 pass; position 2, represents Jl-J3 pass, J2-J4 pass; position 3, represents J1-J4 pass, J2-J3 pass. The technical requirements of the microwave switch mainly include: the working bandwidth is 1000 MHz-22000 MHz; the insertion loss is less than 0.12 dB; a weight of less than 300g, etc.
The power amplifier backup ring comprises a microwave switch, a power amplifier, a waveguide and a cable. All power amplifiers need to be connected to the microwave switch through cables or waveguides. The switches are also connected by cables or waveguides. The microwave switch in the backup ring is divided into a transfer switch, a node switch and a connecting switch. The transfer switch is a switch connected with a power amplifier: when the power amplifier fails, the power amplifier connected to the transfer switch can be switched to the backup power amplifier. The node switch is a switch which is not connected with the power amplifier and is only connected with the cable or the waveguide: as a connection pivot in the backup ring structure. The connecting switch is a switch for connecting two power amplifier backup rings.
Due to the limitations of satellite placement, transponder loads are distributed primarily on the south and north boards of the communication pod. Due to the limited space available on the deck, a deck typically supports only one set of high power backup ring layouts, such as 8 in fig. 1: 6(8 power amplifiers, wherein 6 are main power amplifiers) power amplifier backup rings are distributed on a south board of the satellite communication cabin. The ring is provided with 6 transfer switches which are respectively connected with 8 power amplifiers, and 2 node switches are arranged to ensure that 2 backup power amplifiers can be switched to any two main power amplifiers.
The satellite communication cabin south board is arranged as 14 in fig. 2: 12(14 power amplifiers, wherein 12 are main power amplifiers) power amplifier backup rings, 12 transfer switches are arranged and distributed on the rings, the transfer switches are respectively connected with the 14 power amplifiers, and 3 node switches are arranged and used for ensuring that 2 backup power amplifiers can be switched to any two main power amplifiers.
In order to improve the utilization efficiency of a backup power amplifier and the reliability of a repeater, the backup rings of two deck boards are cascaded by using a microwave switch, for example, a No. 5 connecting switch in FIG. 3 is respectively connected with 8: transfer switches No. 1 and No. 2 in the 6 backup ring and 14: and 12 transfer switches No. 3 and No. 4 in the backup ring. The cascaded backup ring in fig. 3 can support 4 backup power amplifiers at most and switch to any 4 fault power amplifiers at the same time, and the reliability is improved to 22: 18, 1.5 times of the reliability of the original two backup rings.
The steps of the invention can be popularized to other backup ring designs, such as 10:8(10 power amplifiers, wherein 8 are main power amplifiers) backup design of north board design of the communication cabin, 10:8(10 power amplifiers, wherein 8 are main power amplifiers) power amplifier backup design of south board, and the like. The design steps are repeated, and the backup ring cascade design is as shown in FIG. 4.
Those skilled in the art will appreciate that those matters not described in detail in the present specification are well known in the art.
Claims (10)
1. A power amplifier backup ring cascade method of a communication satellite transponder is characterized in that: the method comprises the following steps:
s1, taking a plurality of microwave switches with four ports as a connecting switch, a node switch and a transfer switch respectively, taking the transfer switch which is not connected with the backup power amplifier as a main transfer switch, and taking the transfer switch which is connected with the backup power amplifier as a backup transfer switch;
s2, connecting the two ports of the main transfer switch, the two ports of the connecting switch and the node switch by using transmission lines to form a power amplifier backup ring; connecting one port of the standby transmission switch to one port of the node switch, and connecting the other port of the standby transmission switch to a standby power amplifier; the other ports of the node switches, which are not connected with the standby transfer switch, are connected with the main transfer switch or other node switches in the power amplifier backup ring; two ports of the connecting switch are connected with one power amplifier backup ring through a transmission line, and the other two ports are connected with the other power amplifier backup ring through a transmission line and are connected with a main transfer switch or a node switch in the power amplifier backup ring during connection;
and S3, connecting output multiplexer and master power amplifier on the other two ports of the main transfer switch and the backup transfer switch.
2. The communication satellite repeater power amplifier backup ring cascade method according to claim 1, characterized in that: the number of the main transfer switches between the two node switches in the power amplifier backup ring is not more than two.
3. The communication satellite repeater power amplifier backup ring cascade method according to claim 1, characterized in that: the number of the main transfer switches between the connecting switch and the node switch is not more than two.
4. The communication satellite repeater power amplifier backup ring cascade method according to any one of claims 1 to 3, characterized in that: the number of the connecting switches of the transfer switches or the node switches connected with the different power amplifier backup rings is 1.
5. The communication satellite repeater power amplifier backup ring cascade method according to any one of claims 1 to 3, characterized in that: the microwave switch is T-shaped or R-shaped.
6. The communication satellite repeater power amplifier backup ring cascade method according to any one of claims 1 to 3, characterized in that: the power amplifier backup rings are a first power amplifier backup ring and a second power amplifier backup ring respectively, and the two power amplifier backup rings are connected through a connecting switch; two ports of the connecting switch are respectively connected with one port of the two main transfer switches in the first power amplifier backup ring through a transmission line, and the other two ports of the connecting switch are respectively connected with one port of the two main transfer switches in the second power amplifier backup ring through a transmission line.
7. The communication satellite repeater power amplifier backup ring cascade method according to claim 6, characterized in that: the first power amplifier backup ring comprises two backup power amplifiers, a connecting switch, two node switches, four main transfer switches and two standby transfer switches, wherein the two node switches, the connecting switch and the four main transfer switches are connected to form a first annular passage, the two standby transfer switches are respectively connected to the two node switches, and the two backup power amplifiers are respectively connected to the two standby transfer switches.
8. The communication satellite repeater power amplifier backup ring cascade method according to claim 6, characterized in that: the second power amplifier backup ring comprises two backup power amplifiers, a connecting switch, a first node switch, a second node switch, a third node switch, ten main transfer switches and two backup transfer switches; dividing ten main transfer switches into three groups, wherein the first group comprises two main transfer switches, the second group comprises six main transfer switches, and the third group comprises two main transfer switches; connecting the connecting switch, the first node switch and the first group of main transfer switches to form a second annular passage; the first node switch, the second node switch, the third node switch and the second group of main transfer switches are connected to form a third annular path; the second node switch, the third node switch, the main transfer switch between the second node switch and the third group of main transfer switches are connected to form a fourth annular passage; and the second node switch and the third node switch are respectively connected with a standby transmission switch, and the two standby power amplifiers are respectively connected with the two standby transmission switches.
9. The communication satellite repeater power amplifier backup ring cascade method according to claim 6, characterized in that: the number of the connecting switches of the transfer switches or the node switches connected with the different power amplifier backup rings is 1.
10. The communication satellite repeater power amplifier backup ring cascade method according to claim 6, characterized in that: the microwave switch is T-shaped or R-shaped.
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| CN108631857A (en) * | 2018-03-29 | 2018-10-09 | 西安空间无线电技术研究所 | A kind of control method for automatically switching and system of communication satellite coverage backup ring |
| CN110311725B (en) * | 2019-07-12 | 2021-12-07 | 中国空间技术研究院 | Modular design method for backup ring of satellite-borne transponder |
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| CN1697529A (en) * | 2004-05-12 | 2005-11-16 | 华为技术有限公司 | A method and device for transmitting signals through a power transmission channel of a base station |
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| WO2009032257A1 (en) * | 2007-09-04 | 2009-03-12 | Ibiquity Digital Corporation | Digital radio broadcast receiver, broadcasting methods and methods for tagging content of interest |
| CN107864018A (en) * | 2017-11-21 | 2018-03-30 | 南京泰通科技股份有限公司 | A kind of GPS digital optical fiber direct stations of high reliability railway applications |
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- 2018-06-29 CN CN201810695932.0A patent/CN108964744B/en active Active
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| CN1523907A (en) * | 2003-02-20 | 2004-08-25 | 华为技术有限公司 | Method and device for power amplifier backup |
| CN1697529A (en) * | 2004-05-12 | 2005-11-16 | 华为技术有限公司 | A method and device for transmitting signals through a power transmission channel of a base station |
| CN1780044A (en) * | 2004-11-19 | 2006-05-31 | 华为技术有限公司 | Microwave switch and power amplifier hot backup and mutual assistance system and its realization method |
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| WO2009032257A1 (en) * | 2007-09-04 | 2009-03-12 | Ibiquity Digital Corporation | Digital radio broadcast receiver, broadcasting methods and methods for tagging content of interest |
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