CN213026507U - Miniaturized missile-borne anti-interference antenna - Google Patents
Miniaturized missile-borne anti-interference antenna Download PDFInfo
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- CN213026507U CN213026507U CN202022544281.0U CN202022544281U CN213026507U CN 213026507 U CN213026507 U CN 213026507U CN 202022544281 U CN202022544281 U CN 202022544281U CN 213026507 U CN213026507 U CN 213026507U
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Abstract
The utility model discloses a miniaturized missile-borne anti-interference antenna, which comprises an antenna module and a signal processing module; the antenna module comprises an antenna cavity, an antenna housing fixed on the front surface of the antenna cavity and 2 radio frequency output channels fixed on the bottom surface of the antenna cavity; the antenna cavity comprises 2 two-array-element ceramic antenna arrays, 2 array switching PCBs, 2 low-noise discharge PCBs and a low-noise discharge cavity cover plate; the antenna comprises an antenna cavity, 2 low-noise amplifier PCBs (printed circuit boards) and a ceramic antenna array, wherein the 2 low-noise amplifier PCBs are arranged in parallel in the middle position of the interior of the antenna cavity, the 2 array switching PCBs are fixed on the left side and the right side of the interior of the antenna cavity, feed points of the ceramic antenna array are welded at the input end of the array switching PCB, and the low-noise amplifier PCBs are connected with the array switching PCB through radio frequency coaxial; the outer side of the fixed surface of the ceramic antenna array is inclined downwards; and the low-noise amplifier PCB outputs radio frequency signals to the signal processing module through the radio frequency output channel. The utility model discloses an interference killing feature is good, and structure volume and weight are little moreover.
Description
Technical Field
The utility model relates to a miniaturized missile-borne anti-interference antenna.
Background
The existing missile-borne antenna is basically monopolized by foreign products, can only navigate but cannot resist interference, and can not realize the anti-interference performance at home only by purely imitating the appearance. Therefore, there is a need to develop a miniaturized missile-borne antenna which can be used as an equipotential replacement for foreign products and has an anti-interference function.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a miniaturized missile-borne anti-interference antenna, the interference killing feature is good, and structure volume and weight are little moreover.
In order to achieve the technical purpose, the utility model adopts the following technical scheme:
a miniaturized missile-borne anti-interference antenna comprises an antenna module and a signal processing module for performing anti-interference processing on radio-frequency signals output by the antenna module;
the antenna module comprises an antenna cavity, an antenna housing fixed on the front surface of the antenna cavity and 2 radio frequency output channels fixed on the bottom surface of the antenna cavity; the antenna cavity comprises 2 two-array-element ceramic antenna arrays, 2 array switching PCBs, 2 low-noise discharge PCBs and a low-noise discharge cavity cover plate;
the 2 low-noise amplifier PCBs are arranged in the middle of the interior of the antenna cavity in parallel, the 2 array switching PCBs are fixed on the left side and the right side of the interior of the antenna cavity, feed points of the 2 ceramic antenna arrays are respectively welded at input ends of the 2 array switching PCBs, and the 2 low-noise amplifier PCBs are connected with the 2 array switching PCBs in a one-to-one mode through radio frequency coaxial cables; the outer sides of the fixing surfaces of the 2 ceramic antenna arrays incline to the bottom surface of the antenna cavity;
and the 2 low-noise amplifier PCBs output radio frequency signals to the signal processing module through the 2 radio frequency output channels.
In a more preferred technical scheme, the signal processing module comprises a signal processing module cavity, a signal processing cavity cover plate, a local oscillator cavity cover plate, a radio frequency input port, a radio frequency output port and a feed input port which are fixed on the signal processing module cavity, and a down-conversion PCB, an intermediate frequency switching PCB, a signal processing PCB, an up-conversion PCB and a local oscillator PCB which are fixed in the signal processing cavity;
the signal processing cavity cover plate is fixed at the bottom of the signal processing module cavity, and the local oscillator cavity cover plate is fixed at the top of the signal processing module cavity; the intermediate frequency switching PCB and the signal processing PCB are mutually matched by adopting a MCX-J/MCX-K connector opposite-inserting structure to realize that one cavity is arranged in the signal processing module cavity in a multilayer mode.
In a more preferable technical scheme, the ceramic antenna array is used for receiving L1/B1 frequency point radio frequency signals.
In a more preferred technical solution, the antenna cavity is made of aluminum.
In a more preferable technical scheme, the radio frequency output channel adopts an SMA-KFD radio frequency connector.
In a more preferred technical scheme, an inclined included angle formed between a fixing surface of the ceramic antenna array and the bottom surface of the antenna cavity is 22.5 degrees.
In a more preferred technical scheme, the down-conversion PCB, the intermediate-frequency switching PCB, the signal processing PCB, the up-conversion PCB and the local oscillator PCB are fixedly installed inside the signal processing cavity through screws; the signal processing cavity cover plate and the local oscillation cavity cover plate are respectively locked at the bottom and the top of the signal processing cavity through screws.
In a more preferable technical scheme, a power supply circuit I/O port of the signal processing module adopts a voltage dependent resistor and a TVS device, and is fed and input through a radio frequency output and a feed input port.
Advantageous effects
Compared with the prior art, the utility model discloses an anti-interference antenna is carried to bullet has following technological effect:
1. the active antenna has the function of simultaneously receiving BD B1 and GPS L1 frequency point navigation positioning signals, is supplied to a receiver for use so as to improve the landing precision, the shooting efficiency and the killing number of ammunition units, and greatly reduces the associated killing probability;
2. after the anti-interference processing is carried out on the received radio frequency signals by adopting the existing space-time self-adaptive anti-interference technology, the single interference with the maximum interference-to-signal ratio (relative to-133 dBm) of 70dBc can resist single frequency, frequency sweep, narrow-band interference and broadband pressing type interference in 1 direction;
3. the intermediate frequency switching PCB and the signal processing PCB are mutually matched by adopting a one-cavity multi-layer MCX-J/MCX-K connector opposite-insertion structure, so that the cable-free assembly on the structure is realized, the volume and the weight of the structure are greatly reduced, the utilization of the internal space is realized to the maximum extent, and simultaneously, a large amount of material cost and assembly cost are saved;
4. based on the mature four-array element GNSS anti-interference antenna technology, the four-array element is cut into two-array element, so that the requirements of miniaturization and low power consumption can be met;
5. the ceramic antenna array element of two array elements, its fixed surface outside to the bottom surface slope of antenna cavity and constitute 22.5 inclined included angles with the antenna cavity bottom surface between, can reduce the mutual coupling between the antenna array.
Drawings
Fig. 1 is a schematic diagram of a missile-borne anti-interference antenna according to an embodiment of the present invention;
fig. 2 is an internal structural diagram of an antenna module according to an embodiment of the present invention;
fig. 3 is a top view of an antenna module according to an embodiment of the present invention;
fig. 4 is a structural diagram of an appearance of the signal processing module according to the embodiment of the present invention;
fig. 5 is a schematic diagram of a one-cavity multi-layer MCX-J/MCX-K connector plug structure according to an embodiment of the present invention.
Reference numerals: the antenna comprises an 11-ceramic antenna array, a 12-array switching PCB, a 13-low-noise amplifier PCB, a 14-radio frequency coaxial cable, a 15-radio frequency output channel, a 21-signal processing module cavity, a 22-signal processing cavity cover plate, a 23-local oscillator cavity cover plate, a 24-radio frequency input port, a 25-radio frequency output and feed input port, a 26-intermediate frequency switching PCB and a 27-signal processing PCB.
Detailed Description
This embodiment uses the utility model discloses a technical scheme develops as the foundation, has given detailed implementation and specific operation process, and is right the utility model discloses a technical scheme further explains.
The utility model provides a pair of miniaturized missile-borne anti-interference antenna, include antenna module and be used for carrying out anti-interference processing's signal processing module to the radio frequency signal of antenna module output.
The antenna module comprises an aluminum antenna cavity, an antenna housing fixed on the front surface of the antenna cavity and 2 radio frequency output channels fixed on the bottom surface of the antenna cavity; including ceramic antenna array 11, 2 array switching PCB12, 2 low-noise of 2 two array elements in the antenna cavity and put PCB13, cavity apron are put to the low noise. The cavity apron is put to low noise puts PCB top through the low noise of fix with screw in the antenna cavity, puts the PCB to the low noise and protects.
As shown in fig. 2, 2 low-noise amplifier PCBs 13 are arranged in parallel at the middle position inside the antenna cavity, the 2 array adapter PCBs 12 are fixed at the left and right sides inside the antenna cavity by screws, the feed points of the 2 ceramic antenna arrays 11 are respectively welded to the input ends of the 2 array adapter PCBs 12, and the 2 low-noise amplifier PCBs 13 and the 2 array adapter PCBs 12 are connected one-to-one by 2 MCX-JWB1/047 radio frequency coaxial cables 14; the outer side of the fixing surface of the 2 ceramic antenna elements 11 inclines towards the bottom surface of the antenna cavity, and an inclined included angle formed between the outer side of the fixing surface and the bottom surface of the antenna cavity is 22.5 degrees, as shown in fig. 3.
The 2 radio frequency output channels all adopt SMA-KFD radio frequency connectors, and the 2 low-noise amplifier PCBs output radio frequency signals to the signal processing module through the 2 SMA-KFD radio frequency connectors.
The signal processing module, as shown in fig. 4 and 5, includes a signal processing module cavity 21, a signal processing cavity cover plate 22, a local oscillator cavity cover plate 23, a radio frequency input port 24 fixed on the signal processing module cavity 21, a radio frequency output and feed input port 25, and a down-conversion PCB, an intermediate frequency switching PCB26, a signal processing PCB27, an up-conversion PCB, and a local oscillator PCB which are fixedly installed in the signal processing cavity by screws;
the signal processing cavity cover plate 22 is locked at the bottom of the signal processing module cavity 21 through screws, and the local oscillation cavity cover plate 23 is locked at the top of the signal processing module cavity 21 through screws; the intermediate frequency switching PCB26 and the signal processing PCB27 are mutually matched by adopting an MCX-J/MCX-K connector opposite-inserting structure to realize that one cavity is arranged in the signal processing module cavity 21 in multiple layers.
As shown in fig. 1, in the missile-borne anti-interference antenna of the present embodiment, the 2 two-array-element ceramic antenna arrays are obtained by cutting a four-array-element GNSS anti-interference antenna into 2 two-array elements based on a mature four-array-element GNSS anti-interference antenna technology. When the ceramic antenna array of the two array elements receives the L1/B1 frequency point radio frequency signal, the radio frequency signal is sent to a low noise amplification unit LNA on a low noise amplification PCB for signal amplification processing; the low-noise amplifier unit LNA sends the obtained radio frequency signal to the signal processing module for anti-interference processing through the MCX-JWB1/047 radio frequency coaxial cable; the down-conversion PCB in the signal processing module performs down-conversion and filtering processing on the radio-frequency signal received by the radio-frequency input port, converts the radio-frequency signal into an intermediate-frequency signal and then converts the intermediate-frequency signal to the intermediate-frequency switching PCB, and the intermediate-frequency switching PCB switches the signal to the signal processing PCB; the signal processing PCB performs ADC (analog-to-digital converter) digital-to-analog conversion, array anti-interference signal processing and DAC (digital-to-analog converter) analog-to-digital conversion on the received intermediate frequency signal, outputs the intermediate frequency analog signal subjected to anti-interference processing to the up-conversion PCB, and then up-converts the intermediate frequency analog signal to a radio frequency output, and particularly outputs the radio frequency signal obtained by up-conversion through the radio frequency output and the feed input port. In addition, the radio frequency output and feed input port in the embodiment has both the functions of radio frequency output and 5V feed input, so that the power supply feeds power to the missile-borne anti-interference antenna through the radio frequency output and feed input port. The I/O port of the power circuit adopts a high-quality voltage dependent resistor and a high-performance TVS device, and has the functions of power protection and lightning stroke resistance. In the missile-borne anti-interference antenna, the output radio frequency signal is still an L1/B1 frequency point radio frequency signal, and a common active antenna can be replaced in situ.
The missile-borne anti-interference antenna has the function of an active antenna for simultaneously receiving BD B1 and GPS L1 frequency point navigation positioning signals, is supplied to a receiver for use so as to improve the drop point precision, the shooting efficiency and the killing number of ammunition units, and greatly reduces the associated killing probability; after the anti-interference processing is carried out on the received radio frequency signals by adopting the existing space-time self-adaptive anti-interference technology, the single interference with the maximum interference-to-signal ratio (relative to-133 dBm) of 70dBc can resist single frequency, frequency sweep, narrow-band interference and broadband pressing type interference in 1 direction; the intermediate frequency switching PCB and the signal processing PCB are mutually matched by adopting a structure of one-cavity multi-layer MCX-J/MCX-K connectors for mutual insertion, so that the cable-free assembly on the structure is realized, the volume and the weight of a structural part are greatly reduced, the utilization of the internal space is realized to the maximum extent, and simultaneously, a large amount of material cost and assembly cost are saved; based on the mature four-array element GNSS anti-interference antenna technology, the four-array element is cut into two-array element, so that the requirements of miniaturization and low power consumption can be met; the ceramic antenna array elements of two array elements, its stationary plane outside downward sloping and with constitute 22.5 inclined included angles between the antenna cavity bottom surface, can reduce the mutual coupling between the antenna array.
The above embodiments are preferred embodiments of the present application, and those skilled in the art can make various changes or modifications without departing from the general concept of the present application, and such changes or modifications should fall within the scope of the claims of the present application.
Claims (8)
1. A miniaturized missile-borne anti-interference antenna is characterized by comprising an antenna module and a signal processing module for performing anti-interference processing on a radio-frequency signal output by the antenna module;
the antenna module comprises an antenna cavity, an antenna housing fixed on the front surface of the antenna cavity and 2 radio frequency output channels fixed on the bottom surface of the antenna cavity; the antenna cavity comprises 2 two-array-element ceramic antenna arrays, 2 array switching PCBs and 2 low-noise amplifier PCBs;
the 2 low-noise amplifier PCBs are arranged in the middle of the interior of the antenna cavity in parallel, the 2 array switching PCBs are fixed on the left side and the right side of the interior of the antenna cavity, feed points of the 2 ceramic antenna arrays are respectively welded at input ends of the 2 array switching PCBs, and the 2 low-noise amplifier PCBs are connected with the 2 array switching PCBs in a one-to-one mode through radio frequency coaxial cables; the outer sides of the fixing surfaces of the 2 ceramic antenna arrays incline to the bottom surface of the antenna cavity;
and the 2 low-noise amplifier PCBs output radio frequency signals to the signal processing module through the 2 radio frequency output channels.
2. The miniaturized missile-borne anti-interference antenna according to claim 1, wherein the signal processing module comprises a signal processing module cavity, a signal processing cavity cover plate, a local oscillator cavity cover plate, a radio frequency input port, a radio frequency output port and a feed input port which are fixed on the signal processing module cavity, and a down-conversion PCB, an intermediate frequency switching PCB, a signal processing PCB, an up-conversion PCB and a local oscillator PCB which are fixed in the signal processing module cavity;
the signal processing cavity cover plate is fixed at the bottom of the signal processing module cavity, and the local oscillator cavity cover plate is fixed at the top of the signal processing module cavity; the intermediate frequency switching PCB and the signal processing PCB are mutually matched by adopting a MCX-J/MCX-K connector opposite-inserting structure to realize that one cavity is arranged in the signal processing module cavity in a multilayer mode.
3. The miniaturized missile-borne anti-interference antenna according to claim 1, wherein the ceramic antenna array is used for receiving radio frequency signals of L1/B1 frequency points.
4. The miniaturized missile-borne anti-jamming antenna according to claim 1, wherein the antenna cavity is made of aluminum.
5. The miniaturized missile-borne anti-interference antenna according to claim 1, wherein the radio frequency output channel adopts an SMA-KFD radio frequency connector.
6. The miniaturized missile-borne anti-interference antenna according to claim 1, wherein an inclined angle formed between the fixing surface of the ceramic antenna array and the bottom surface of the antenna cavity is 22.5 degrees.
7. The miniaturized missile-borne anti-interference antenna according to claim 2, wherein the down-conversion PCB, the intermediate-frequency switching PCB, the signal processing PCB, the up-conversion PCB and the local oscillator PCB are fixedly installed inside the signal processing cavity through screws; the signal processing cavity cover plate and the local oscillation cavity cover plate are respectively locked at the bottom and the top of the signal processing cavity through screws.
8. The miniaturized missile-borne anti-interference antenna according to claim 2, wherein the power circuit I/O port of the signal processing module adopts a piezoresistor and a TVS device, and is fed and input through the radio frequency output and feed input port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022544281.0U CN213026507U (en) | 2020-11-06 | 2020-11-06 | Miniaturized missile-borne anti-interference antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022544281.0U CN213026507U (en) | 2020-11-06 | 2020-11-06 | Miniaturized missile-borne anti-interference antenna |
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| Publication Number | Publication Date |
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| CN213026507U true CN213026507U (en) | 2021-04-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117239392A (en) * | 2023-09-21 | 2023-12-15 | 北京中捷时代航空科技有限公司 | Ceramic antenna structure applied to high-temperature environment |
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- 2020-11-06 CN CN202022544281.0U patent/CN213026507U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117239392A (en) * | 2023-09-21 | 2023-12-15 | 北京中捷时代航空科技有限公司 | Ceramic antenna structure applied to high-temperature environment |
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