KR101994100B1 - Millimeter wave device for identifying friend and foe - Google Patents

Abstract

According to the present invention, provided is a millimeter wave apparatus for identifying a friend or foe, which is mounted to a soldier helmet. The millimeter wave apparatus for identifying a friend or foe comprises: a flexible PCB responding to a question received from an IFF interrogator and generating a transmission signal; a plurality of antennas receiving the transmission signal from the flexible PCB and outputting a response signal corresponding to the transmission signal to the IFF interrogator; and microstrip lines connected between each of the plurality of antennas and the flexible PCB and transmitting the transmission signal to the corresponding antenna from the flexible PCB.

Description

[0001] MILLIMETER WAVE DEVICE FOR IDENTIFIED FRIEND AND FOE [0002]

The present invention relates to a millimeter wave device for peer identification.

Before launching a missile on an airplane, a specific code signal is sent as a radar signal to identify the enemy or enemy, and the peer is identified through the received signal. In the battlefield, 20% of soldiers die because they are not identified. A soldier who has been asked a question should send a response to the questioner exactly. If the response does not arrive correctly, it can be mistaken for the enemy. Also, it must be made small and light because soldiers must wear it.

Registered Patent: 10-1827953, Registered Date: Feb. 5, 2018 Title: Soldier Day / Night Operation Image Processing Device and Method.

It is an object of the present invention to provide a novel millimeter wave device for identifying peers.

A millimeter wave device for identifying a peer mounted on a bottle using helmet according to an embodiment of the present invention includes: a flexible printed circuit board (PCB) for generating a transmission signal in response to a query received from an identification friend-foe interrogator; A plurality of antennas receiving the transmission signal from the flexible PCB and outputting a response signal corresponding to the transmission signal to the IFF interrogator; And microstrip lines connected between each of the plurality of antennas and the flexible PCB and transferring the transmission signal from the flexible PCB to a corresponding antenna.

In one embodiment, the flexible PCB and the microstrip lines are connected by wire bonding.

In an exemplary embodiment, the plurality of antennas and corresponding microstrip lines are connected by wire bonding.

In an embodiment, the plurality of antennas may comprise eight transmit antennas arranged at a 45 degree angle.

The flexible PCB may include a field programmable gate array (FPGA) that generates a transmission signal and a carrier signal through DDS (direct digital synthesis), mixes the transmission signal and the carrier signal to generate the transmission signal, . ≪ / RTI >

The flexible PCB may further include an amplifier and a switch module for amplifying the transmission signal and transmitting the amplified signal through a switching operation to a corresponding antenna among the plurality of antennas in a time division manner.

In an exemplary embodiment, the flexible PCB includes: a coupler for receiving the transmission signal; A mixer for mixing a signal output from the coupler with a signal for a carrier to extract a code signal; And a digital-to-analog converter for converting an analog signal of the extracted code signal.

In an exemplary embodiment, the flexible PCB may further include a power supply for receiving power from a battery of the bottle using helmet.

In an exemplary embodiment, the flexible PCB may further include a single on-computer (SOC) that receives commands from an external main computer.

In an embodiment, the power supply supplies power to the SOC and supplies power to another module in the flexible PCB when receiving the hibernation mode from the SOC.

The millimeter wave device for identifying a peer according to the embodiment of the present invention can be mounted on a helmet for bottle use, can be carried only by releasing the hibernation mode, and can be manufactured simply and lightly.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. However, the technical features of the present embodiment are not limited to the specific drawings, and the features disclosed in the drawings may be combined with each other to constitute a new embodiment.
FIG. 1 is a view showing an example of a bottle-use helmet equipped with a millimeter wave device for identifying a peer according to an embodiment of the present invention.
FIG. 2 is a view showing an exemplary structure of a millimeter wave device for identifying a peer of the present invention. FIG.
3 is an exemplary view showing an antenna beam width of a millimeter wave device for peer identification of the present invention.
4 is a diagram illustrating an exemplary millimeter wave device for identifying a peer according to an embodiment of the present invention.
5 is an exemplary diagram illustrating an FPGA according to an embodiment of the present invention.
6 is a diagram illustrating an exemplary waveform generator according to an embodiment of the present invention.
7 is a diagram illustrating an exemplary amplification and switch module according to an embodiment of the present invention.
8 is a diagram illustrating an exemplary monitoring module according to an embodiment of the present invention.
FIG. 9 is a flowchart illustrating an exemplary operation of a millimeter wave device for identifying a peer according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG.

The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms.

The terms may be used for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

Other expressions that describe the relationship between components, such as "between" and "between" or "neighboring to" and "directly adjacent to" should be interpreted as well. The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise.

In this application, the terms "comprises" or "having" are intended to specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, wherein one or more other features, , Steps, operations, components, parts, or combinations thereof, as a matter of course. Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be construed as meaning consistent with meaning in the context of the relevant art and are not to be construed as ideal or overly formal in meaning unless expressly defined in the present application .

FIG. 1 is a view showing an example of a bottle-use helmet equipped with a millimeter wave device for identifying a peer according to an embodiment of the present invention. Referring to FIG. 1, the bottle use helmet 10 may include a millimeter wave device 100 for identifying peers. The helmet 10 of the soldier may include a millimeter wave responding device, that is, a millimeter wave device 100 for identifying the peer, for a question for identifying a peer. In the embodiment, the millimeter wave device 100 for identifying the peer can be implemented small and light so as to be disposed in the upper empty space of the helmet 10. In the embodiment, the millimeter wave device 100 for identifying the peer is portable because it consumes less power.

In conventional pier identification technology, the transponder consists of a radio receiver and a transmitter that receive at one frequency (1030 MHz) and transmit at another frequency (1090 MHz) for identification of the aircraft and the vehicle's peer. These transponders are low in frequency and large in size and difficult to carry. Due to the low frequency, the antenna is large and the device size is so large that it is difficult to mount it on a soldier's helmet. In addition, because of its large size, it consumes a lot of power, and the battery capacity for carrying it must be large. Moreover, since it is necessary to carry it separately, it is less portable as a bottle responder. In addition, the transponder has a low frequency, so that the interference image is large, and particularly, there are many disadvantages such as jamming.

On the other hand, the millimeter wave device 100 for identifying a peer according to the embodiment of the present invention is small in size and can be configured as a helmet integral type. In addition, the millimeter wave device 100 for identifying the peer according to the embodiment of the present invention is high in frequency and strong against disturbance and disturbance of a signal. In addition, the millimeter wave device 100 for identifying a peer according to the embodiment of the present invention can be integrally manufactured on one printed circuit board (PCB). Furthermore, the millimeter wave device 100 for identifying the peer according to the embodiment of the present invention can be kept in a power saving state in the hibernation mode in a normal state. Further, the millimeter wave device 100 for identifying the peer according to the embodiment of the present invention can be implemented small by applying a dedicated IC, and the consumed power can be remarkably reduced.

FIG. 2 is a view showing an exemplary structure of a millimeter wave device for identifying a peer of the present invention. FIG. 2, a millimeter wave device 100 for identifying a peer includes a flexible PCB 101, a plurality of antennas 102, a plurality of microstrip lines 102 connecting a plurality of antennas 102 and a flexible PCB 101, (103).

In an embodiment, a 14 mm antenna 102 may be mounted on the helmet 10 so that eight cover 360 degrees.

In an embodiment, the signal generator, the millimeter wave signal synthesizer, and the amplification unit may be formed of a single flexible PCB 101.

In an embodiment, the output signal may be delivered to the corresponding antenna 102 in a pattern through eight switches.

In the embodiment, the millimeter wave device 100 for identifying the peer is constituted by the flexible PCB 101, the antenna 102 and the micro strip line 103 as shown in Fig. 2 inside the helmet 10 Can be installed.

The millimeter wave device 100 for identifying the peer according to the embodiment of the present invention is portable by mounting a power source on the helmet 10. In the embodiment, the millimeter wave device 100 for identifying the peer is used for battery power, so that it can be implemented to normally wait in the hibernation mode state and transmit a predetermined signal upon receiving the piere identification related command

In the embodiment, the connection of the flexible PCB 101 and the micro strip line 103 mounted on the helmet 10 may be connected by wire bonding. However, it should be understood that the connection relationship between the flexible PCB 101 and the microstrip line 103 is not limited thereto.

In an embodiment, the microstrip line 103 can be designed with a structure in which a signal of 30 GHz passes through the helmet 10 with minimal loss.

In an embodiment, the final antenna 102 and the microstrip line 103 may be connected by wire bonding. However, it should be understood that the connection relationship between the antenna 102 and the microstrip line 103 is not limited thereto.

In an embodiment, eight transmit antennas 102 may be arranged at a 45 degree angle. In an embodiment, each transmit operation of the eight transmit antennas 102 may be performed one by one by switching. In another embodiment, the transmitting operation of the plurality of transmitting antennas 102 may be performed at the same time. Millimeter waves corresponding to the response for identifying the peer can be transmitted by switching and arranging only eight antennas.

FIG. 3 is an exemplary view showing an antenna beam width of a millimeter wave device 100 for identifying a peer of the present invention.

In an embodiment, a 14 mm aperture RF antenna can transmit signals at a beam width of 50 degrees at a 10 mm RF wavelength (Ka band). In an embodiment, the antenna 102 may be designed such that there is no region of interest in signal transmission. In the embodiment, 30 GHz can be selected so that the linearity is good.

In the embodiment, the transponder uses 30.090 GHz and the interrogator can use 30.030 GHz for RF. However, it should be understood that the frequencies of the transponder and the interrogator are not limited thereto.

In the embodiment, in the case of a laser, a wavelength of 1.5 mu m may be used. Here, the antenna beam width can be approximated by the following equation.

: 안테나 빔폭, D : 안테나 지름, λ: 파장이다.here

: Antenna beam width, D: antenna diameter, and?: Wavelength.

FIG. 4 is a view illustrating an example of a flexible PCB 101 of a millimeter wave device 100 for identifying a peer according to an embodiment of the present invention. 4, the flexible PCB 101 includes a single on-computer 110, a field programmable gate array 120, a waveform generator 130, an amplification and switching module 140, and a monitoring module 150 ).

The SOC 110 may be commanded at the future soldier's main computer. The SOC can be selected among the various communication methods to be used by the main computer. Here, various communication methods can be UART, USB, RS485, and the like. In an embodiment, the FPGA 120 may generate a corresponding code pulse using a transmission code stored within the SOC 110. In an embodiment, a transmission signal and a carrier signal can be generated through DDS (direct digital synthesis).

The waveform generator 130 may generate a carrier signal of 30 GHz by a voltage control oscillator (VCO), and then mix with a transmission signal to generate a final signal.

The amplification and switch module 140 may be amplified for the desired transmit power and transmitted in time division to eight antennas through eight switches.

The monitoring module 150 may monitor the signal using a coupler in the pre-switch stage before going to the antenna 102 for transmission. In the embodiment, the monitoring module 150 extracts only the code signal through the 30 GHz mixer (mixer), and performs digital conversion to check the code.

The power supply 160 may be implemented to receive the necessary power from the battery of the helmet 10. [ In an embodiment, the power supply 160 can supply each module by changing the battery voltage to a lower voltage. In an embodiment, the power supply 160 basically supplies power to the SOC 110 and may supply power to the remaining modules when a hibernation mode release command is received from the SOC 110. In the embodiment, the SOC 110 maintains the power consumption to a minimum by operating the basic power saving mode, and can perform a normal operation when an instruction is received.

5 is an exemplary diagram illustrating an FPGA 120 according to an embodiment of the present invention. 5, the FPGA 120 may include a first direct digital synthesizer (DDS1) 121, a second direct digital synthesizer (DDS2, 122), and a code pulse generator (123).

The FPGA 120 may generate a pulse for the corresponding code using the information received from the SOC 110. The generated pulse may be buffered in a digital buffer.

The first direct digital synthesizer 121 may generate a 100 MHz continuous wave signal (first CW signal) as a reference synchronization signal for generating a 30 GHz carrier frequency. On the other hand, it should be understood that the frequency of the signal of the first CW is not limited to 100 MHz. In an embodiment, the first direct digital synthesizer 121 may comprise a digital to analog converter (DAC).

The second direct digital synthesizer 122 may generate a 90 MHz CW signal (second CW signal) for code signal transmission. On the other hand, it should be understood that the frequency of the signal of the second CW is not limited to 90 MHz. In an embodiment, the second direct digital synthesizer 122 may comprise a digital to analog converter (DAC).

The code pulse generator 123 may generate a code pulse.

The first CW signal, the second CW signal, and the code pulse signal generated in the FPGA 120 may be transmitted to the waveform generator module.

6 is a diagram illustrating an exemplary waveform generator according to an embodiment of the present invention. 6, the waveform generator 130 may include a voltage controlled oscillator (VCO) 131, a mixer 132, and an RF switch 133.

The waveform generator 130 may use the VCO 131 to generate the carrier frequency and use the previously generated 100 MHz reference signal.

The mixer 132 may generate 30.090 GHz by mixing 90 MHz and 30 GHz.

The RF switch 133 can generate a final transmission signal through ON / OFF using a pulse signal made to mix the output signal of the mixer 132 with the code signal.

7 is a diagram illustrating an exemplary amplification and switch module according to an embodiment of the present invention.

The amplification and switch module 140 may determine the amplification value of the transmission signal in consideration of the transmission distance and the atmospheric attenuation depending on the climate in order to transmit the signal to the receiving end of the final interrogator. In an embodiment, the amplified signal may be delivered to the switch through a filter. In an embodiment, the amplified signal may pass through a coupler for monitoring in the middle.

8 is a diagram illustrating an exemplary monitoring module according to an embodiment of the present invention. Referring to FIG. 8, the signal output through the coupler may be mixed again at 30 GHz and then only the 90 MHz signal may be extracted, digitally converted, and the code may be transmitted to the SOC 110.

One way to discern who is friends or not is to use the IFF (Identification Friend-Foe) system. Various IFF systems are well known. These are generally radio frequency (RF) transmission systems and are primarily concerned with aircraft, but the same techniques can be applied to land vehicles or ships. Certain RF systems, known as peer identification systems, may include sending question signals to unknown objects (airplanes, ships, tanks). If the object is alive, there are some types of responder to respond to the inquiry with the appropriate response. When an appropriate response is received, the object can be designated as allied. If the object does not provide the requested response, it will be attacked by specifying it. One disadvantage of the peer identification system is that the object to be inspected always needs to have a mechanism for responding to the question. The second drawback is that the PIANA Identification IFF system is the most positive type of identification system and has been used in various forms for many years in various forms. However, RF system is vulnerable to radio interference, and due to the power requirements of the RF system, . The third factor to consider is the receiver's ability to respond. In the age of nonlinear battlefields, it is very likely that both enemy forces and enemies are near. Consequently, when using a peer identification system, care must be taken to avoid ambiguity in IFF identification.

Spatial-selective IFF systems using current RF technology require small bandwidth and corresponding large antennas. At the same time, the system must have a wide range. This may require electron or electromechanical beam scanning. As a result, it can be expensive and impractical.

The millimeter wave device 100 for identifying a peer according to an embodiment of the present invention can be implemented in a cost effective and space efficient manner. For example, the millimeter wave device 100 for identifying a peer according to the present invention may be configured to be low in cost, small in size, and small in size, so that the millimeter wave device 100 can be applied to individual military applications. .

FIG. 9 is a flowchart illustrating an exemplary operation of a millimeter wave device for identifying a peer according to an embodiment of the present invention. Referring to FIGS. 1 to 9, a method of operating the milling demarcating device 100 for peer identification can be performed as follows.

When the initial soldier is put into operation after wearing the helmet 10, the responder for the IFF, that is, the millimeter wave device for identifying the peer 100 can start the power application (S111) and perform the self check (S112) If the self-check is normally performed, the millimeter wave device 100 for identifying the peer can confirm the cipher code by receiving the cipher code (S113). The above-described initial step may proceed (S110).

Since the IFF equipment responds only to questions from the interrogator, the battery consumption can be minimized through the hibernation mode in the operation standby mode (S120). Upon receiving the request for the question from the question receiving apparatus, a command for the response may be received through the control computer embedded in the soldier's suite (S130). If a response command is not received, step S120 may be entered.

The responder of the helmet 10 receives the command from the SOC chip through the encrypted wireless communication and is released from the hibernation mode and a response signal can be generated using the corresponding cipher code. Code verification is the most important factor in generating response signals. If the wrong code is sent, it can be identified as a friend. The code can be verified through the dual code checking device (S140). A code signal can be generated using the identified code (S150). If the code signal is not generated, step S140 may be entered.

After generating the analog transmission signal for transmission, the self-generated code signal can be confirmed (S160). When the code signal is confirmed, eight switches may be activated to transmit the eight signals with a time difference (S170). If the code signal is not confirmed, step S140 may be entered. Thereafter, the code signal can be transmitted through the antenna (S180). And then step S140 may be entered for re-transmission. In an embodiment, once a turn is transmitted, the transmission operation can be performed again via code verification again. In an embodiment, after 100 transmissions, it may enter an operational standby state waiting for a response command again.

The steps and / or operations in accordance with the present invention may occur in different orders, in parallel, or concurrently in other embodiments for other epochs or the like, as may be understood by one of ordinary skill in the art .

Depending on the embodiment, some or all of the steps and / or operations may be performed on one or more non-transitory computer-readable media, including instructions, programs, interactive data structures, At least some of which may be implemented or performed using one or more processors. The one or more non-transitory computer-readable media can be, by way of example, software, firmware, hardware, and / or any combination thereof. Further, the functions of the "module" discussed herein may be implemented in software, firmware, hardware, and / or any combination thereof.

One or more non-transitory computer-readable media and / or means for implementing / performing one or more operations / steps / modules of embodiments of the present invention may be implemented as application-specific integrated circuits (ASICs), standard integrated circuits, But are not limited to, controllers that perform appropriate instructions, including microcontrollers, and / or embedded controllers, field-programmable gate arrays (FPGAs), complex programmable logic devices (CPLDs) .

The above-described contents of the present invention are only specific examples for carrying out the invention. The present invention will include not only concrete and practical means themselves, but also technical ideas which are abstract and conceptual ideas that can be utilized as future technologies.

10: Bottle use helmet
100: Millimeter wave device for identification of peers
101: Flexible PCB
102: Antenna
103: Microstrip line
110: SOC
120: FPGA
130: Waveform generator
140: Amplifier and Switch Module
150: Monitoring module

Claims (10)

CLAIMS 1. A millimeter wave device for identification of a pier mounted on a helmet for bottle use, comprising:
A flexible printed circuit board (PCB) for generating a transmission signal in response to a query received from an identification friend-foe interrogator;
A plurality of antennas receiving the transmission signal from the flexible PCB and outputting a response signal corresponding to the transmission signal to the IFF interrogator; And
And microstrip lines connected between each of the plurality of antennas and the flexible PCB and transmitting the transmission signal from the flexible PCB to a corresponding antenna,
Wherein the plurality of antennas comprises eight transmit antennas arranged at a 45 degree angle,
The flexible printed circuit board (PCB), the plurality of antennas, and the microstrip lines are installed in an upper center empty space of the bottle using helmet,
The eight transmit antennas are mounted on the helmet to cover 360 degrees,
Wherein the flexible PCB and the microstrip lines are connected by wire bonding,
The plurality of antennas and the corresponding microstrip lines are connected by wire bonding,
The eight transmit antennas include,
Equation

(Equation

: Antenna beam width, D: antenna diameter,? Wavelength)
Wherein the antenna has a beam width according to the antenna beam width. delete delete delete The method according to claim 1,
The flexible PCB includes a field programmable gate array (FPGA) for generating a transmission signal and a carrier signal through DDS (Direct Digital Synthesis), and mixing the transmission signal and the carrier signal to generate the transmission signal. For millimeter wave devices. The method according to claim 1,
Wherein the flexible PCB further comprises an amplifier and a switch module for amplifying the transmission signal and transmitting the amplified signal through a switching operation to a corresponding antenna among the plurality of antennas in a time division manner. The method according to claim 1,
In the flexible PCB,
A coupler for receiving the transmission signal;
A mixer for mixing a signal output from the coupler with a signal for a carrier to extract a code signal; And
Further comprising a digital-to-analog converter for converting the extracted code signal to an analog signal. The method according to claim 1,
Wherein the flexible PCB further comprises a power supply for receiving power from a battery of the bottle use helmet. 9. The method of claim 8,
Wherein the flexible PCB further comprises a single on computer (SOC) for receiving a command from an external main computer. 10. The method of claim 9,
Wherein the power supply supplies power to the SOC and supplies power to other modules in the flexible PCB when receiving the hibernation release mode from the SOC.

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