Full-duplex full-redundancy backup microwave device with receiving and transmitting frequency points capable of being switched on orbit

Abstract

The invention discloses a full-duplex full-redundancy backup microwave device capable of switching receiving and transmitting frequency points on orbit, a first radio frequency switch is provided with four ports, two ports at one end of the first radio frequency switch are respectively connected with a first antenna and a second antenna, and two ports at the other end of the first radio frequency switch are respectively connected with a first communication machine and a second communication machine; and the first radio frequency switch is controlled by the switch control interface, switches the signal output / emission lines, and performs full-redundancy backup output / emission on the signals. According to the invention, through integrated design of each microwave part assembly, combined switching of eight states such as on-orbit transceiving frequency point switching and the like is realized, and the difficulties of complex front-end hardware configuration and high cost when inter-satellite communication equipment is used as a master node or a slave node for communication are solved; and meanwhile, the problems of pattern spectrum and generalization of master and slave node communication equipment products are solved. In addition, on-orbit switching can be achieved, a full-duplex full-redundancy backup function is achieved, and the problems of equipment redundancy backup and reliability consideration are solved by receiving an external instruction through a switch control interface.

Description

Technical Field

[0001] This invention belongs to the field of power supply network technology, and in particular relates to a full-duplex, fully redundant backup microwave device with on-track switchable transmit and receive frequencies. Background Technology

[0002] With the development of satellite technology, especially in satellite interconnection systems (such as satellite constellations) where there are a large number of satellites, the communication devices that serve as the main communication nodes need to have flexible switching capabilities for transmitting and receiving frequencies when using frequency division duplex communication. At the same time, signal transmission links have a certain degree of unreliability and are easily affected by space interference, attitude blockage, and multipath effects. To ensure system reliability, wireless communication usually involves backup functions. Furthermore, satellite size and weight resources are very limited, requiring the development of highly integrated feeder network components. In order to achieve system miniaturization and lightweighting, both transmitting and receiving signals use a single channel, and the various channels will be mutually coupled. All of these pose challenges to the design of the feeder network for satellite communication systems. Summary of the Invention

[0003] The technical objective of this invention is to provide a full-duplex, fully redundant backup microwave device with on-orbit switchable transmit and receive frequencies to solve the problem.

[0004] To solve the above problems, the technical solution of the present invention is as follows: A full-duplex, fully redundant backup microwave device with on-orbit switchable transmit and receive frequencies includes: a mounting bracket; The mounting bracket integrates a first antenna, a second antenna, a first radio frequency switch, a first communication device, a second communication device, and a switch control interface; The first radio frequency switch has four ports. Two ports at one end are connected to the first antenna and the second antenna, respectively, and two ports at the other end are connected to the first communication device and the second communication device, respectively. The received signal is transmitted from the first antenna or the second antenna to the first communication device or the second communication device through the first radio frequency switch. The transmitted signal is output from the first communication device or the second communication device to the first antenna or the second antenna and then transmitted. The first RF switch is controlled by the switch control interface to switch the signal output / transmission lines and perform full redundancy backup output / transmission of the signal.

[0005] The first radio frequency switch receives signals from the first antenna and transmits them to the first or second communication device. At the same time, the first radio frequency switch also receives signals from the second antenna and transmits them to the second or first communication device.

[0006] Specifically, the first communication unit includes a first duplexer and a second radio frequency switch; the second communication unit includes a second duplexer and a third radio frequency switch; the second radio frequency switch and the third radio frequency switch support fully redundant backup output / transmission.

[0007] Among them, the first duplexer and the second duplexer achieve low-loss and high mutual suppression signal transmission at the transmit and receive frequencies.

[0008] Specifically, the first and second duplexers are integrated into one design, and the second and third RF switches are integrated into one design.

[0009] Among them, the first radio frequency switch, the first communication device and the second communication device are connected by aerospace-grade No. 3 semi-rigid low-loss cable.

[0010] Among them, the first radio frequency switch, the second radio frequency switch and the third radio frequency switch are all selected as aerospace double-pole double-throw electric control switches.

[0011] Because the present invention adopts the above technical solution, it has the following advantages and positive effects compared with the prior art: This invention provides a full-duplex, fully redundant backup microwave device with on-orbit switching of transmit and receive frequencies. By integrating the design of various microwave components, it realizes the combined switching of eight states, including on-orbit transmit and receive frequency switching. This solves the problem of complex front-end hardware configuration and high cost when inter-satellite communication equipment is used as a master or slave node for communication. At the same time, it solves the problem of standardization and universalization of master and slave node communication equipment products.

[0012] This invention enables on-orbit switching and features full-duplex, full-redundancy backup functionality. It addresses the challenges of equipment redundancy backup and reliability by receiving external commands through a switch control interface. Attached Figure Description

[0013] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention.

[0014] Figure 1 This is a schematic diagram of the signal flow of a full-duplex, fully redundant backup microwave device with on-track switchable transmit and receive frequencies according to the present invention. Figure 2 This is a schematic diagram of the signal flow of the radio frequency switch of the present invention; Figure 3 This is a schematic diagram of the structure of a full-duplex, fully redundant backup microwave device with on-track switchable transmit and receive frequencies according to the present invention. Detailed Implementation

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0016] To keep the drawings concise, only the parts relevant to the invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of components with the same structure or function is shown schematically, or only one is labeled. In this document, "one" can mean not only "only one" but also "more than one".

[0017] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, illustrates the signal flow of a full-duplex, fully redundant backup microwave device with on-track switchable transmit and receive frequencies proposed in this invention. The advantages and features of this invention will become clearer from the following description and claims.

[0018] Example See Figures 1 to 3 This embodiment provides a full-duplex, fully redundant backup microwave device with on-orbit switchable transmit and receive frequencies, comprising: a mounting frame, on which a first antenna (antenna a), a second antenna (antenna b), a first radio frequency switch (radio frequency switch 1), a first communicator, a second communicator, and a switch control interface are mounted.

[0019] like Figure 1 As shown, the first RF switch has four ports (X1G, X2G, J11, J10). One end has two ports (X1G and X2G), with port (X1G) connected to the first antenna and port (X2G) connected to the second antenna. The other end also has two ports (J11 and J10), with port (J11) connected to the first communication unit and port (J10) connected to the second communication unit. Signals received from the first antenna first enter port (X1G) and are then output from port (J11) to the first communication unit; alternatively, they can be output from port (J10) to the second communication unit. Similarly, signals received from the second antenna first enter port (X2G) and are then directly transmitted from port (J10) to the second communication unit, or output from port (J11) to the first communication unit. That is, as... Figure 2 As shown, signal Sin1 can be output from Sout1, and Sin2 can be output from Sout2; with external command control, cross-output can be achieved, that is, Sin1 can be output from Sout2, and Sin2 can be output from Sout1. Figure 1In this embodiment, the first RF switch receives signals from the first antenna and can directly transmit them to the first communication device, or, under the control of the switch control interface, perform cross-transmission and transmit them to the second communication device. Correspondingly, the first RF switch also receives signals from the second antenna and can directly transmit them to the second communication device, or, under the control of the switch control interface, perform cross-transmission and transmit them to the first communication device. Therefore, in this embodiment, the first RF switch can switch the signal output / transmission lines, providing full redundancy for signal output / transmission. Similarly, signal transmission can be understood as directional signal transmission.

[0020] See Figure 1 The first communication unit includes a first duplexer (duplexer a) and a second RF switch (RF switch 2), while the second communication unit includes a second duplexer (duplexer b) and a third RF switch (RF switch 3). Both the second and third RF switches support fully redundant backup output / transmission. The first and second duplexers are integrated into a single design, as are the second and third RF switches. The first and second duplexers achieve low-loss, high-rejection signal transmission at their respective transmit and receive frequencies. The low loss is achieved through integrated design (multi-stage switch and duplexer cascading), compact layout, and low insertion loss of the components themselves, resulting in low loss across the entire RF link. The high rejection is primarily due to the isolation between the transmit and receive channels of the duplexers and RF switches themselves.

[0021] Preferably, the first RF switch, the first communication device, and the second communication device are connected using an aerospace-grade No. 3 semi-rigid low-loss cable to reduce the overall insertion loss of the device. Preferably, the first RF switch, the second RF switch, and the third RF switch are all selected as aerospace-grade double-pole double-throw electric control switches.

[0022] The signal control in this embodiment will now be described: Table 1 Node number Node definition Remark Signal flow direction 1 State 1: Negative Pulse Drive RF channel 1-2 & 3-4 closed Antenna a → Communicator a, Antenna b → Communicator b 2 State 2: Negative Pulse Drive RF channels 1-4 & 2-3 closed Antenna a → Communicator b, Antenna b → Communicator a 3 Control of common positive electricity Control common terminal +28Vdc Table 2 Equipment status Signal flow direction RF interface State 1 Antenna a -> Duplexer a -> J21 (receiver f1) & J19 (transmitter f2) X1G->J21 (signal f1) X1G->J19 (signal f2) State 2 Antenna a -> Duplexer a -> J21 (receiver f2) & J19 (transmitter f1) X1G->J21 (signal f2) X1G->J19 (signal f1) State 3 Antenna b -> Duplexer a -> J21 (receive f1) & J19 (transmit f2) X2G->J21 (signal f1) X2G->J19 (signal f2) State 4 Antenna b -> Duplexer a -> J21 (receiver f2) & J19 (transmitter f1) X2G->J21 (signal f2) X2G->J19 (signal f1) State 5 Antenna a -> Duplexer b -> J25 (receiver f1) & J23 (transmitter f2) X1G->J25 (signal f1) X1G->J23 (signal f2) State 6 Antenna a -> Duplexer b -> J25 (receiver f2) & J23 (transmitter f1) X1G->J25 (signal f2) X1G->J23 (signal f1) Status 7 Antenna b -> Duplexer b -> J25 (receiver f1) & J23 (transmitter f2) X2G->J25 (signal f1) X2G->J23 (signal f2) State 8 Antenna b -> Duplexer b -> J25 (receiver f2) & J23 (transmitter f1) X2G->J25 (signal f2) X2G->J23 (signal f1) Table 1 above is a signal drive table for aerospace radio frequency switches. Different nodes refer to different radio frequency switches. Table 2 shows the eight working states of the microwave device that can be switched through different commands to achieve on-orbit switching of receiving and transmitting frequencies and full redundancy backup functions for antennas and communication devices. By combining Table 1 and Table 2, the radio frequency signal flow of the first, second and third radio frequency switches can be changed by the pulse signal in Table 1, thereby forming the eight different radio frequency signal channels in Table 2.

[0023] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and their equivalents, they shall still fall within the protection scope of the present invention.

Claims

1. A full-duplex, fully redundant backup microwave device with on-orbit switchable transmit and receive frequencies, characterized in that, include: Mounting rack; The mounting bracket integrates a first antenna, a second antenna, a first radio frequency switch, a first communication device, a second communication device, and a switch control interface; The first radio frequency switch has four ports. Two ports at one end are connected to the first antenna and the second antenna, respectively, and two ports at the other end are connected to the first communication device and the second communication device, respectively. The received signal is transmitted from the first antenna or the second antenna to the first communication device or the second communication device via the first radio frequency switch. The transmitted signal is output from the first communication device or the second communication device to the first antenna or the second antenna via the first radio frequency switch and then transmitted. The first radio frequency switch is controlled by the switch control interface to switch the signal output / transmission line and perform full redundancy backup output / transmission of the signal.

2. The full-duplex, fully redundant backup microwave device with on-orbit switchable transmit and receive frequencies as described in claim 1, characterized in that, The first radio frequency switch receives a signal from the first antenna and sends it to the first communication device or the second communication device. At the same time, the first radio frequency switch also receives a signal from the second antenna and sends it to the second communication device or the first communication device.

3. The full-duplex, fully redundant backup microwave device with on-orbit switchable transmit and receive frequencies according to claim 1, characterized in that, The first communication device includes a first duplexer and a second radio frequency switch; the second communication device includes a second duplexer and a third radio frequency switch; the second radio frequency switch and the third radio frequency switch support fully redundant backup output / transmission.

4. The full-duplex, fully redundant backup microwave device with on-orbit switchable transmit and receive frequencies according to claim 3, characterized in that, The first duplexer and the second duplexer achieve low-loss and high mutual suppression signal transmission at the transmit and receive frequencies.

5. The full-duplex, fully redundant backup microwave device with on-orbit switchable transmit and receive frequencies according to claim 3, characterized in that, The first duplexer and the second duplexer are integrated into one design, and the second RF switch and the third RF switch are integrated into one design.

6. The full-duplex, fully redundant backup microwave device with on-orbit switchable transmit and receive frequencies according to claim 1, characterized in that, The first radio frequency switch, the first communication device, and the second communication device are connected by aerospace-grade No. 3 semi-rigid low-loss cable.

7. The full-duplex, fully redundant backup microwave device with on-orbit switchable transmit and receive frequencies according to claim 3, characterized in that, The first radio frequency switch, the second radio frequency switch and the third radio frequency switch are all aerospace-grade double-pole double-throw electric control switches.

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