CN110221300B - Cross backup switch network of planar integrated Ka waveband for remote sensing SAR radar - Google Patents
Cross backup switch network of planar integrated Ka waveband for remote sensing SAR radar Download PDFInfo
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- CN110221300B CN110221300B CN201910643975.9A CN201910643975A CN110221300B CN 110221300 B CN110221300 B CN 110221300B CN 201910643975 A CN201910643975 A CN 201910643975A CN 110221300 B CN110221300 B CN 110221300B
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- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/89—Radar or analogous systems specially adapted for specific applications for mapping or imaging
- G01S13/90—Radar or analogous systems specially adapted for specific applications for mapping or imaging using synthetic aperture techniques, e.g. synthetic aperture radar [SAR] techniques
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Abstract
The invention discloses a cross backup switch network of a plane integrated Ka wave band for a remote sensing SAR radar, which comprises: the microwave cavity, set up ferrite switch knot in the microwave cavity, with the driver that ferrite switch knot is connected, and with the load that the non-microwave transceiver port of ferrite switch is connected. The ferrite switch is added between the main backup path and the backup path to switch the main backup, thereby meeting the requirement of the system for the cross switching of the main backup of the transceiver system. A plurality of microwave functional elements are manufactured in the integrated cavity to form a planar integrated Ka-band multi-cascade microwave ferrite switch network, so that microwave loss is reduced, the size of the assembly is reduced, reliability is improved, cost is reduced, and debugging links are reduced.
Description
Technical Field
The invention relates to a ferrite switch network, in particular to a planar integrated Ka-band cross backup switch network for a remote sensing SAR radar.
Background
At present, the remote sensing radar system generally adopts a mode of respectively backing up transmitting and receiving, namely, a master transmitter transmits, a master receiver receives, and a backup receiver receives when the backup transmitter transmits. In order to improve the reliability of the transceiving backup, the system requires that a cross backup function is added in addition to the primary transceiving and the secondary transceiving. The previous functions of transmitting and receiving backup respectively realize that the master and backup of a transmitter and a receiver are switched by adopting a mechanical switch. After the function of cross backup is added, the mechanical switch can not meet the requirement, and a complex multi-cascade microwave ferrite switch network is needed.
Disclosure of Invention
The invention aims to provide a planar integrated Ka-band cross backup switch network for a remote sensing SAR radar, which is used for solving the problem that the main backup cross switching of a receiving and transmitting system of the remote sensing SAR radar cannot be realized at present.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention discloses a cross backup switch network of a plane integrated Ka wave band for a remote sensing SAR radar, which comprises: the microwave cavity is provided with a ferrite switch junction arranged in the microwave cavity, a driver connected with the ferrite switch junction and a load connected with a non-microwave transceiving port of the ferrite switch;
the ferrite switch junction includes: a first ferrite switch junction, a second ferrite switch junction, a third ferrite switch junction, a fourth ferrite switch junction, a fifth ferrite switch junction, a sixth ferrite switch junction and a seventh ferrite switch junction, wherein the third ferrite switch junction, the second ferrite switch junction, the sixth ferrite switch junction and the seventh ferrite switch junction are sequentially communicated through a waveguide channel to form a main transmitting channel and/or a main receiving channel, the fourth ferrite switch junction, the second ferrite switch junction, the sixth ferrite switch junction and the seventh ferrite switch junction are sequentially communicated through a waveguide channel to form a standby transmitting channel and/or a standby receiving channel, the first ferrite switch junction and the third ferrite switch junction are communicated through a waveguide channel to form a left semi-array receiving channel, and the fifth ferrite switch junction and the fourth ferrite switch junction are communicated through a waveguide channel to form a right semi-array receiving channel.
Preferably, the microwave cavity comprises an upper cavity and a lower cavity,
the lower cavity and the upper cavity are matched with each other to form a plurality of Y-shaped waveguide junctions which are formed by connecting the waveguide channels, wherein the waveguide channels are formed by matching grooves on the upper surface of the lower cavity with grooves on the lower surface of the upper cavity.
Preferably, the first ferrite switch junction, the second ferrite switch junction, the third ferrite switch junction, the fourth ferrite switch junction, the fifth ferrite switch junction, the sixth ferrite switch junction, and the seventh ferrite switch junction correspond to the Y-type waveguide junctions one to one and are all disposed at the centers of the corresponding Y-type waveguide junctions.
Preferably, the ferrite switch junction is Y-shaped and has three ports; the non-microwave transceiving end comprises a port c of a first ferrite switch junction, a port c of a fifth ferrite switch junction, a port b of a sixth ferrite switch junction and a port a of a seventh ferrite switch junction.
Preferably, a port a of the first ferrite switch junction is communicated with a port of the left array antenna through a waveguide channel, a port b of the first ferrite switch junction is communicated with a port a of the third ferrite switch junction through a waveguide channel, and a port c of the first ferrite switch junction is communicated with a load through a waveguide channel;
the port a of the second ferrite switch junction is communicated with the port b of the third ferrite switch junction through a waveguide channel, the port b of the second ferrite switch junction is communicated with the port a of the fourth ferrite switch junction through a waveguide channel, and the port c of the second ferrite switch junction is communicated with the port c of the sixth ferrite switch junction through a waveguide channel;
the port c of the third ferrite switch junction is communicated with the port of the main transceiver through a waveguide channel;
a port b of the fourth ferrite switch junction is communicated with a port a of the fifth ferrite switch junction through a waveguide channel, and a port c of the fourth ferrite switch junction is communicated with a port of the backup transceiver through a waveguide channel;
a port b of the fifth ferrite switch junction is communicated with a port of the right array antenna through a waveguide channel, and a port c of the fifth ferrite switch junction is communicated with a load through the waveguide channel;
the port a of the sixth ferrite switch junction is communicated with the port b of the seventh ferrite switch junction through a waveguide channel, and the port b of the sixth ferrite switch junction is communicated with a load through a waveguide channel;
and the port a of the seventh ferrite switch junction is communicated with the load through a waveguide channel, and the port c of the seventh ferrite switch junction is communicated with the port of the full-array antenna through a waveguide channel.
Preferably, the driver is disposed on the microwave cavity and connected to the ferrite switch junction through a wire.
Preferably, the upper cavity and the lower cavity are connected through screws.
The invention has the following beneficial effects:
the planar integrated Ka-band cross backup switch network provided by the technical scheme of the invention adopts a complex multi-cascade microwave ferrite switch network, the main backup and the backup of a transmitter and a receiver are respectively switched by adopting a mechanical switch before changing, and a ferrite switch is additionally arranged between the main backup access and the backup access to switch the main backup, so that the requirement of the system on the cross switching of the main backup of the transceiver system is met. While embedding a built-in load. A plurality of microwave functional elements are manufactured in the integrated cavity to form a planar integrated Ka-band multi-cascade microwave ferrite switch network, so that microwave loss is reduced, the size of the assembly is reduced, reliability is improved, cost is reduced, and debugging links are reduced.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Fig. 1 shows a schematic diagram of a planar integrated Ka-band cross backup switch network for a remote sensing SAR radar in the present embodiment.
In the figure: 1. a microwave cavity; 2. a first ferrite switch junction; 3. a second ferrite switch junction; 4. a third ferrite switch junction; 5. a fourth ferrite switch junction; 6. a fifth ferrite switch junction; 7. a sixth ferrite switch junction; 8. a seventh ferrite switch junction; 9. a load; p1, master transceiver port; p2, backup transceiver port; PF, full array antenna port; PL, left array antenna port; PR, right array antenna port.
Detailed Description
In order to more clearly illustrate the invention, the invention is further described below with reference to preferred embodiments and the accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
As shown in fig. 1, the present invention discloses a planar integrated Ka-band cross-backup switch network for a remote sensing SAR radar in an embodiment, wherein the cross-backup switch network employs a complex multi-cascade microwave ferrite switch network, changes the prior use of a mechanical switch to respectively switch the primary and backup of a transmitter and a receiver, and adds a ferrite switch between primary and backup paths to switch the primary and backup, thereby satisfying the requirement of the system for the cross-switching of the primary and backup of a transceiver system, and simultaneously embedding a built-in load for absorbing microwave signal energy emitted from a support arm of a redundant ferrite switch junction. The cross-backup switching network includes: the microwave cavity 1 is used for providing a waveguide channel environment for switching the master backup for the switch network; the ferrite switch junction is arranged in the microwave cavity 1 and is used for switching and controlling a microwave conduction channel and the direction; a driver (not shown in the figure) connected to the ferrite switch junction for controlling the ferrite switch junction to switch, wherein the driver is disposed on the microwave cavity 1 and connected to the ferrite switch junction through a wire; and the load is connected with a non-microwave transceiving port of the ferrite switch and absorbs redundant microwave energy, wherein the non-microwave transceiving port is a port which is not connected with microwave sources such as a receiver and a transmitter in the ferrite switch junction and is not interconnected with other ferrite switch junctions through a wave island channel.
In this embodiment, the ferrite switch junction includes: a first ferrite switch junction 2, a second ferrite switch junction 3, a third ferrite switch junction 4, a fourth ferrite switch junction 5, a fifth ferrite switch junction 6, a sixth ferrite switch junction 7, and a seventh ferrite switch junction 8. And the waveguide channels such as the main part and the backup part are formed by connecting seven ferrite switch junctions and the waveguide channels in the microwave cavity 1. The waveguide channel formed by sequentially communicating the third ferrite switch junction 4, the second ferrite switch junction 3, the sixth ferrite switch junction 7 and the seventh ferrite switch junction 8 through the waveguide channel can be used as a main transmitting channel and/or a main receiving channel, wherein the main transmitting channel and the main receiving channel have the same structure, but the directions of internal microwave signals are opposite. The waveguide channel formed by sequentially communicating the fourth ferrite switch junction 5, the second ferrite switch junction 3, the sixth ferrite switch junction 7 and the seventh ferrite switch junction 8 through the waveguide channel can be used as a standby transmitting channel and/or a standby receiving channel, wherein the standby transmitting channel and the standby receiving channel have the same structure, but the directions of internal microwave signals are opposite. The first ferrite switch junction 2 and the third ferrite switch junction 4 are communicated through a waveguide channel to form a left semi-array receiving channel for receiving and using by a master receiver in a master transceiver; and the fifth ferrite switch junction 6 and the fourth ferrite switch junction 5 are communicated through a waveguide channel to form a right semi-array receiving channel for receiving and using by a backup receiver in a backup transceiver.
In this embodiment, the microwave cavity 1 includes an upper cavity and a lower cavity, the upper cavity is connected to the lower cavity through screws, the lower cavity and the upper cavity cooperate with each other to form a plurality of Y-shaped waveguide junctions formed by connecting the waveguide channels, and the waveguide channel for connecting the Y-shaped waveguide junctions is formed by matching a groove on the upper surface of the lower cavity and a groove on the lower surface of the upper cavity. Further, the first ferrite switch junction 2, the second ferrite switch junction 3, the third ferrite switch junction 4, the fourth ferrite switch junction 5, the fifth ferrite switch junction 6, the sixth ferrite switch junction 7, and the seventh ferrite switch junction 8 each correspond to a Y-shaped waveguide junction, and each ferrite switch junction is disposed at the center of the corresponding Y-shaped waveguide junction.
In order to match with the Y-shaped waveguide junction structure, the ferrite switch junction is Y-shaped and has three ports. Preferably, as shown in fig. 1, the cross backup switch network described in this embodiment includes: a port a of the first ferrite switch junction 2 is communicated with a port PL of a left array antenna through a waveguide channel, a port b of the first ferrite switch junction 2 is communicated with a port a of the third ferrite switch junction 4 through a waveguide channel, and a port c of the first ferrite switch junction 2 is communicated with a load through a waveguide channel; a port a of the second ferrite switch junction 3 is communicated with a port b of the third ferrite switch junction 4 through a waveguide channel, a port b of the second ferrite switch junction 3 is communicated with a port a of the fourth ferrite switch junction 5 through a waveguide channel, and a port c of the second ferrite switch junction 3 is communicated with a port c of the sixth ferrite switch junction 7 through a waveguide channel; the port c of the third ferrite switch junction 4 is communicated with the port P1 of the primary transceiver through a waveguide channel; the b port of the fourth ferrite switch junction 5 is communicated with the a port of the fifth ferrite switch junction 6 through a waveguide channel, and the c port of the fourth ferrite switch junction 5 is communicated with a backup transceiver port P2 through a waveguide channel; a port b of the fifth ferrite switch junction 6 is communicated with a port PR of the right array antenna through a waveguide channel, and a port c of the fifth ferrite switch junction 6 is communicated with a load through the waveguide channel; a port a of the sixth ferrite switch junction 7 is communicated with a port b of the seventh ferrite switch junction 8 through a waveguide channel, and a port b of the sixth ferrite switch junction 7 is communicated with a load through a waveguide channel; and the port a of the seventh ferrite switch junction 8 is communicated with a load through a waveguide channel, and the port c of the seventh ferrite switch junction 8 is communicated with the full-array antenna port PF through a waveguide channel. At this time, the non-microwave transceiving terminal specifically includes: a c-port of the first ferrite switch junction 2, a c-port of the fifth ferrite switch junction 6, a b-port of the sixth ferrite switch junction 7 and an a-port of the seventh ferrite switch junction 8.
Based on the embodiment, the invention also discloses a use method of the planar integrated Ka-band cross backup switch network in the process of realizing the main backup cross switching of the remote sensing SAR radar transceiving system, which comprises the following specific processes:
the microwave signal transmitted by the master transmitter (the master transceiver comprising the master transmitter and the master receiver) is fed from the master transceiver port P1. Microwave signals sequentially pass through a third ferrite switch junction 4, a second ferrite switch junction 3, a sixth ferrite switch junction 7 and a seventh ferrite switch junction 8, and the full-array antenna is output from a port c of the seventh ferrite switch junction 8 through a port PF of the full-array antenna, so that a principal component transmitting mode is realized; conversely, microwave signals transmitted from the full-array antenna are fed in from a port PF of the full-array antenna, and the signals pass through a seventh ferrite switch junction 8, a sixth ferrite switch junction 7, a second ferrite switch junction 3 and a third ferrite switch junction 4 and are output to a master receiver in the master transceiver from a port c of the third ferrite switch junction 4, so that a master receiving mode is realized; the process adopts a main sending and main receiving mode.
The microwave signal transmitted from the backup transmitter (the backup transceiver includes the backup transmitter and the backup receiver) is fed from the backup transceiver port P2. Microwave signals sequentially pass through a fourth ferrite switch junction 5, a second ferrite switch junction 3, a sixth ferrite switch junction 7 and a seventh ferrite switch junction 8, and are output to the full-array antenna from a port c of the seventh ferrite switch junction 8 through a port PF of the full-array antenna, so that a backup transmitting mode is realized; conversely, the microwave signal transmitted from the full-array antenna is fed from the full-array antenna port PF, passes through the seventh ferrite switch junction 8, the sixth ferrite switch junction 7, the second ferrite switch junction 3, and the fourth ferrite switch junction 5 in sequence, and is output from the port c of the fourth ferrite switch junction 5 to the backup receiver in the backup transceiver, thereby realizing the backup receiving mode; the process adopts a mode of standby sending and standby receiving;
the microwave signal transmitted from the master transmitter is fed from the master emitter port P1. The signal passes through a third ferrite switch junction 4, a second ferrite switch junction 3, a sixth ferrite switch junction 7 and a seventh ferrite switch junction 8, and is output to the full-array antenna from a port c of the seventh ferrite switch junction 8 through a port PF of the full-array antenna, so that the mode of transmitting the main part is realized; in turn, the microwave signal transmitted from the full-array antenna is fed from the full-array antenna port PF, and the signal passes through the seventh ferrite switch junction 8, the sixth ferrite switch junction 7, the second ferrite switch junction 3, and the fourth ferrite switch junction 5, and is output from the port c of the fourth ferrite switch junction 5 to the backup receiver, thereby implementing the backup receiving mode. The process adopts a primary sending and receiving mode.
The microwave signal transmitted by the backup transmitter is fed from the backup transceiver port P2. The signal passes through the fourth ferrite switch junction 5, the second ferrite switch junction 3, the sixth ferrite switch junction 7 and the seventh ferrite switch junction 8, and is output to the full-array antenna from a port c of the seventh ferrite switch junction 8 through a port PF of the full-array antenna, so that a backup transmitting mode is realized; in turn, microwave signals transmitted from the full-array antenna are fed in from a port PF of the full-array antenna, and the signals pass through a seventh ferrite switch junction 8, a sixth ferrite switch junction 7, a second ferrite switch junction 3, and a third ferrite switch junction 4, and are output from a port c of the third ferrite switch junction 4 to a master receiver in the master transceiver, thereby realizing a master receiving mode. The process adopts a mode of sending and receiving in reserve.
The microwave signal transmitted by the master transmitter is fed from the master transceiver port P1. The signal passes through a third ferrite switch junction 4, a second ferrite switch junction 3, a sixth ferrite switch junction 7 and a seventh ferrite switch junction 8, and is output to the full-array antenna from a port c of the seventh ferrite switch junction 8, so that the mode of transmitting the main part is realized; conversely, the microwave signal transmitted from the left array antenna is fed in from the port PL of the left array antenna, the signal passes through the first ferrite switch junction 2 and the third ferrite switch junction 4, and is output from the port c of the third ferrite switch junction 4 to the primary receiver, meanwhile, the microwave signal transmitted from the right array antenna is fed in from the port PR of the right array antenna, and the signal passes through the fifth ferrite switch junction 6 and the fourth ferrite switch junction 5, and is output from the port c of the fourth ferrite switch junction 5 to the backup receiver. The process adopts a mode of main transmitting and left and right receiving.
The microwave signal transmitted by the backup transmitter is fed from the backup transceiver port P2. The signal passes through the fourth ferrite switch junction 5, the second ferrite switch junction 3, the sixth ferrite switch junction 7 and the seventh ferrite switch junction 8, and is output to the full-array antenna PF from a port c of the seventh ferrite switch junction 8, so that a backup transmission mode is realized; conversely, the microwave signal transmitted from the left array antenna is fed in from the port PL of the left array antenna, the signal passes through the first ferrite switch junction 2 and the third ferrite switch junction 4, and is output from the port c of the third ferrite switch junction 4 to the primary receiver, meanwhile, the microwave signal transmitted from the right array antenna is fed in from the port PR of the right array antenna, and the signal passes through the fifth ferrite switch junction 6 and the fourth ferrite switch junction 5, and is output from the port c of the fourth ferrite switch junction 5 to the backup receiver. The process adopts a mode of sending and receiving left and right.
In the transmitting and receiving process, based on the clockwise ring state and the anticlockwise ring state of the ferrite switch junction, the waveguide channel switching selection of the microwave signal is controlled and completed by a driver connected with the ferrite switch junction.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.
Claims (6)
1. A planar integrated Ka-band crossbar switch network for a remote sensing SAR radar, said crossbar switch network comprising: the microwave cavity is provided with a ferrite switch junction arranged in the microwave cavity, a driver connected with the ferrite switch junction and a load connected with a non-microwave transceiving port of the ferrite switch;
the ferrite switch junction includes: a first ferrite switch junction, a second ferrite switch junction, a third ferrite switch junction, a fourth ferrite switch junction, a fifth ferrite switch junction, a sixth ferrite switch junction and a seventh ferrite switch junction, wherein the third ferrite switch junction, the second ferrite switch junction, the sixth ferrite switch junction and the seventh ferrite switch junction are sequentially communicated through a waveguide channel to form a main transmitting channel and/or a main receiving channel, the fourth ferrite switch junction, the second ferrite switch junction, the sixth ferrite switch junction and the seventh ferrite switch junction are sequentially communicated through a waveguide channel to form a standby transmitting channel and/or a standby receiving channel, the first ferrite switch junction and the third ferrite switch junction are communicated through a waveguide channel to form a left semi-array receiving channel, the fifth ferrite switch junction and the fourth ferrite switch junction are communicated through a waveguide channel to form a right semi-array receiving channel;
the port a of the first ferrite switch junction is communicated with the port a of the left array antenna through a waveguide channel, the port b of the first ferrite switch junction is communicated with the port a of the third ferrite switch junction through a waveguide channel, and the port c of the first ferrite switch junction is communicated with a load through a waveguide channel;
the port a of the second ferrite switch junction is communicated with the port b of the third ferrite switch junction through a waveguide channel, the port b of the second ferrite switch junction is communicated with the port a of the fourth ferrite switch junction through a waveguide channel, and the port c of the second ferrite switch junction is communicated with the port c of the sixth ferrite switch junction through a waveguide channel;
the port c of the third ferrite switch junction is communicated with the port of the main transceiver through a waveguide channel;
a port b of the fourth ferrite switch junction is communicated with a port a of the fifth ferrite switch junction through a waveguide channel, and a port c of the fourth ferrite switch junction is communicated with a port of the backup transceiver through a waveguide channel;
a port b of the fifth ferrite switch junction is communicated with a port of the right array antenna through a waveguide channel, and a port c of the fifth ferrite switch junction is communicated with a load through the waveguide channel;
the port a of the sixth ferrite switch junction is communicated with the port b of the seventh ferrite switch junction through a waveguide channel, and the port b of the sixth ferrite switch junction is communicated with a load through a waveguide channel;
and the port a of the seventh ferrite switch junction is communicated with the load through a waveguide channel, and the port c of the seventh ferrite switch junction is communicated with the port of the full-array antenna through a waveguide channel.
2. The planar integrated Ka-band crossbar switch network for remote sensing SAR radar according to claim 1 wherein the microwave cavity comprises an upper cavity and a lower cavity,
the lower cavity and the upper cavity are matched with each other to form a plurality of Y-shaped waveguide junctions which are formed by connecting the waveguide channels, wherein the waveguide channels are formed by matching grooves on the upper surface of the lower cavity with grooves on the lower surface of the upper cavity.
3. The cross-backup switch network for planar integrated Ka-band for remote sensing SAR radar according to claim 2, wherein said first, second, third, fourth, fifth, sixth and seventh ferrite switch junctions are in one-to-one correspondence with said Y-type waveguide junctions and are all disposed at the center of the corresponding Y-type waveguide junctions.
4. The planar integrated Ka-band crossbar switch network for remote sensing SAR radar according to claim 1, wherein said ferrite switch junction is Y-shaped and has three ports; the non-microwave transceiving end comprises a port c of a first ferrite switch junction, a port c of a fifth ferrite switch junction, a port b of a sixth ferrite switch junction and a port a of a seventh ferrite switch junction.
5. The planar integrated Ka-band crossbar switch network for a remote sensing SAR radar according to claim 1, wherein said driver is disposed on said microwave cavity and connected to said ferrite switch junction by a wire.
6. The planar integrated Ka-band crossbar switch network for remote sensing SAR radars according to claim 2, wherein said upper cavity is connected to said lower cavity by screws.
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| US5854602A (en) * | 1997-04-28 | 1998-12-29 | Erim International, Inc. | Subaperture high-order autofocus using reverse phase |
| US6111535A (en) * | 1997-08-25 | 2000-08-29 | Veridian Erim International, Inc. | Method of minimizing leakage energy in a synthetic aperture radar process |
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