CN107979968A - A kind of Phase amplitude-matched ring backup architecture - Google Patents

Abstract

A kind of Phase amplitude-matched ring backup architecture, the structural framing of 2 is backed up using the work of n platforms product facility, key component is to extend to dispersion compensation network when design adds during ring backs up switch interconnection in the structure, ensures that the magnitude-phase characteristics of the product facility when switching is backed up does not change.The both ends for placing backup product facility in the structure, work product equipment is arranged in order, if a certain product facility failure, upper end and lower end product facility are switched up and switched downwards successively, ensures that the opposite magnitude-phase characteristics between each product facility does not change；If certain adjacent two product facility failure, switching mode are same as above；If certain non-conterminous two product facility failure, intermediate products equipment do not switch, the switching of both sides product facility, so ensures that the opposite magnitude-phase characteristics change between each product facility is minimum.

Description

A Phase Consistent Ring Backup Structure

technical field

The invention relates to an amplitude-phase consistent ring backup structure, which belongs to the field of electronic technology.

Background technique

This project originated from the development process of a satellite transponder subsystem in Xi'an Branch. It is necessary to backup the amplifiers in the 8×8MPA (Multiport Power Amplifiers) multiport power amplifier to meet the system reliability requirements. Because the amplifier in MPA has the requirement of amplitude and phase consistency, the loop backup method adopted will not be able to change the amplitude and phase characteristics of the amplifier in the loop. There are many existing loop backup methods of 10 to 8, but they all affect the amplitude and phase characteristics of the loop. Affected, the amplitude and phase characteristics of 8×8MPA cannot be guaranteed, resulting in performance degradation.

Contents of the invention

The technical problem solved by the present invention is: to overcome the deficiencies of the prior art, to propose a design method and principle of how to ensure that the ring backup width is consistent, and to design a n+2 ring backup structure with a consistent width, which solves the problem of ring backup. The problem of product amplitude and phase consistency in the backup structure ensures product performance during the switching backup process.

The technical solution of the present invention is: an amplitude-phase consistent ring backup structure, including: backup product equipment, input end ring backup switch, output end ring backup switch and delay and dispersion compensation network; external product equipment and backup product equipment input Both the input end and the output end are connected to the input end ring backup switch and the output end ring backup switch respectively through the time delay and dispersion compensation network. The extension and dispersion compensation networks are interconnected in turn.

There are 2 backup product devices, n+2 ring backup switches at the input end, n+2 ring backup switches at the output end ring backup switch, and 2n+4 delay and dispersion compensation networks, where n represents the external The number of product devices.

Both the ring backup switch at the input end and the ring backup switch at the output end are coaxial T-type switches.

The time delay and dispersion compensation network adopts a cable network.

The advantage of the present invention compared with prior art is:

1) By designing the "phase and dispersion compensation network" method in the ring backup structure, the amplitude and phase consistency of the product in the ring backup switching is guaranteed, and a general structure of n+2 n ring backup with consistent amplitude and phase is designed , deduced and optimized the structure with consistent amplitude and phase, 10 guarantees and 8 ring backups. Using this structure improves the reliability of 8×8MPA (Multiport Power Amplifiers) multiport power amplifier in the system and meets the requirements of system applications.

2) The ring backup structure of the present invention, by designing and adding a delay and dispersion compensation network in the ring backup switch connection, ensures that the amplitude and phase characteristics of the product equipment will not change when the backup is switched, and ensures the consistency of the amplitude and phase of n-channel products.

Description of drawings

Fig. 1 is a schematic diagram of the ring backup structure of the present invention.

Fig. 2 is the topology of the 10-protected 8-ring backup structure with the characteristic of amplitude and phase consistency in the present invention.

Fig. 3 is the topology of the enhanced amplitude-phase consistent 10-guaranteed 8-ring backup structure in the present invention.

Figure 4 shows the traditional 10-guaranteed-8 topology.

Detailed ways

The traditional 10-guarantee and 8-ring backup structure is shown in Figure 4. In this structure, it is impossible to guarantee the consistency of amplitude and phase in the ring during backup switching. This patent is based on the switch used in the existing ring backup, and firstly gives the design method and principle of how to ensure the consistency of the ring backup amplitude: in order to have a consistent amplitude and phase, it is necessary to add a "phase and dispersion compensation network" in the ring backup structure In order to ensure that the amplitude and phase characteristics in the loop will not change after the backup product is switched.

Secondly, according to the design method and principle of the amplitude-phase consistent ring backup structure, an n+2-guaranteed-n general-purpose ring backup structure is designed, as shown in Figure 1. Through the selection of "phase and dispersion compensation network", any switching of backup can ensure the consistency of amplitude and phase in the ring, including: backup product equipment, input end ring backup switch, output end ring backup switch, and delay and dispersion compensation network ; The input end and output end of the external product equipment and the backup product equipment are respectively connected to the ring backup switch of the input end and the ring backup switch of the output end through the delay and dispersion compensation network, and the ring backup switch of the input end passes through the delay and dispersion compensation network in turn The ring backup switches at the output end are also interconnected sequentially through the time delay and dispersion compensation network.

There are 2 backup product devices, n+2 ring backup switches at the input end, n+2 ring backup switches at the output end ring backup switch, and 2n+4 delay and dispersion compensation networks, where n represents the external The number of product devices.

Both the ring backup switch at the input end and the ring backup switch at the output end are coaxial T-type switches.

The time delay and dispersion compensation network adopts a cable network.

Finally, a backup structure with 10 protections and 8 rings with consistent amplitude and phase is optimized through deduction, as shown in Figure 2. Afterwards, the two groups of 10-protected-8 structures are combined, and an enhanced 10-protected 8-ring backup structure with consistent amplitude is proposed, as shown in Fig. 3 . The patent of the present invention proposes the design method of adding "phase and dispersion compensation network" in the ring backup structure to realize the ring backup of amplitude phase consistency, and then designs two kinds of 10 and 8 ring backup structures with amplitude consistency.

In the structure of Figure 2, the "phase and dispersion compensation network" is designed through the length of the cable, and the backup equipment is located at both ends of the loop. If any device in the ring fails, the amplitude and phase consistency of the devices in the ring can be ensured by switching to both sides through the switch; if any two adjacent devices in the ring fail, the amplitude and phase consistency of the devices in the ring can be ensured by switching to both sides through the switch; If any two non-adjacent devices in the ring fail, the amplitude-phase consistency in the ring cannot be achieved, but it can be guaranteed that only one device in the ring is shorter than the other devices in phase by an integer wavelength of the center frequency, but the amplitude-phase consistency changes little .

In the structure of Figure 3, two groups of 10-guaranteed 8-ring backup components are connected. After the connection, if any one of backup device 2 or backup device 3 fails, the performance of each group of 10-guaranteed 8 will not be affected. The enhanced ring backup structure is applied to the model, and the MPA performance and reliability meet the system requirements after backup.

In summary, since coaxial switches and radio frequency cable components have broadband characteristics, different "phase and dispersion compensation networks" can be used to construct various ring backup structures with amplitude and phase consistency requirements, so this patent can also be widely used in other Model of transponder ring backup products.

The content that is not described in detail in the description of the present invention belongs to the well-known technology of those skilled in the art.

Claims (4)

1. A ring backup structure with consistent amplitude and phase is characterized in that it comprises: backup product equipment, input end ring backup switch, output end ring backup switch and time delay and dispersion compensation network; external product equipment and the input end of backup product equipment, The output ends are respectively connected to the ring backup switch at the input end and the ring backup switch at the output end through the time delay and dispersion compensation network. The dispersion compensation networks are interconnected sequentially. 2. A kind of amplitude-phase consistent ring backup structure according to claim 1, characterized in that: there are 2 backup product devices, n+2 ring backup switches at the input end, and n+2 ring backup switches at the output end ring backup switch It is n+2 units, and the delay and dispersion compensation network is 2n+4, where n represents the number of external product devices. 3. The amplitude-phase consistent ring backup structure according to claim 1, characterized in that: both the input-end ring backup switch and the output-end ring backup switch are coaxial T-type switches. 4. The amplitude-phase consistent loop backup structure according to claim 1, characterized in that: the delay and dispersion compensation network adopts a cable network.