KR20200077376A - Apparatus for forming radiating element of phased array radar - Google Patents

Abstract

According to an embodiment of the present disclosure, provided is a method, which is a radiation element configuration method of a phased array radar. The method comprises the processes of: checking a signal; determining an interval of radiation elements of an ultra-high frequency (UHF) antenna based on a wavelength of a frequency of a very high frequency (VHF) when the signal is a dual band; and configuring the entire radiation element at the determined interval of the radiation elements.

Description

A device for constructing a radiating element of a phased array radar{APPARATUS FOR FORMING RADIATING ELEMENT OF PHASED ARRAY RADAR}

The present disclosure relates to an apparatus and method for constructing a radiating element of a phased array radar.

4th generation (4th-generation: 4G, hereinafter referred to as "4G") Improved 5th generation (5th-generation: 5G, hereinafter "5G") to meet the growing demand for wireless data traffic after commercialization of communication systems Efforts have been made to develop a communication system or a pre-5G (pre-5G, hereinafter referred to as "pre-5G") communication system. For this reason, a 5G communication system or a pre-5G communication system is called a beyond 4G network communication system or a post LTE system.

In order to achieve high data rates, 5G communication systems have implementations in the millimeter wave (mmWave, hereinafter referred to as "mmWave") band (e.g., a frequency band such as the 60 Giga (60 GHz) band). Is being considered. In order to mitigate the path loss of radio waves in the ultra-high frequency band and increase the transmission distance of radio waves, beamforming in a 5G communication system, massive multi-input multi-output: massive MIMO, hereinafter "massive MIMO) technology, full dimensional MIMO (FD-MIMO, hereinafter referred to as "FD-MIMO") technology, array antenna technology, and analog beam Forming (analog beamforming) technology and large-scale antenna (large scale antenna) technology is being discussed.

In addition, in order to improve the network of the system, in the 5G communication system, an evolved small cell, an advanced small cell, a cloud radio access network (cloud RAN), an ultra-dense network , Device-to-device (D2D, hereinafter referred to as "D2D") communication, wireless backhaul, mobile network, cooperative communication, CoMP (coordinated multi-points) , And technology development such as reception cancellation.

In addition, in 5G systems, advanced coding modulation (ADC, hereinafter referred to as "ACM") hybrid frequency shift keying (FSK, hereinafter referred to as "FSK") and orthogonal Quadrature amplitude modulation (QAM, hereinafter referred to as "QAM") (hybrid FSK and QAM: FQAM, hereinafter referred to as "FQAM") method and sliding window superposition coding (SWSC, hereinafter) "SWSC" method, advanced access technology filter bank multi carrier (FBMC, hereinafter referred to as "FBMC") technology, and non-orthogonal multiple access (NOMA) , &Quot;hereinafter referred to as "NOMA") and sparse code multiple access (SCMA, "hereinafter referred to as "SCMA") technologies, etc. are being developed.

On the other hand, a radar (Radar) is a device that receives an echo of electromagnetic waves reflected from the surface of a target object by emitting electromagnetic waves, detecting the presence of an object or receiving a response signal from an automatic responder (radar responder) in the target It is a device that is mainly used when checking by.

The antenna used to radiate the beam from the radar is a dish antenna (Parabolic Antenna), a phased array antenna (Phased Array Antenna), or the like.

The dish antenna scans the beam by a mechanical rotation method, and the phased array antenna scans the electron beam electronically by controlling the phase.

The phased array antenna places a large number of radiating elements on a horizontal plane and radiates radio waves in various directions by receiving a phase difference of each radiating element and receives a standby signal. The radiating element of the phased array antenna is usually a coaxial collinear antenna (CoCo antenna) and a Yagi antenna.

The phased array radar can operate in a single band of frequency bands. Therefore, a technique that makes detection difficult with techniques such as a radio-absorbent material (RAM) absorbed in a specific band of a detection aircraft has been developed. The radar cross section (RCS) of the detection object typically shows different RCS characteristics depending on the frequency band, and a phased array radar capable of being detected in a dual band can increase the detection probability. Here, the dual band means a frequency band that simultaneously operates the UHF (Ultra High Frequency) frequency and the VHF (Very High Frequency) frequency.

However, dual-band radar operation was difficult, and even in dual-band operation, there was a problem that it was difficult to implement the gain characteristics for each band.

The present disclosure provides an apparatus and method in which array antenna gain can be increased because exiting the entire radiating element.

The present disclosure provides an apparatus and method capable of increasing a target detection probability because RCS characteristics are different with respect to frequency.

A method according to an embodiment of the present disclosure includes: a method of constructing a radiating element of a phased array radar, comprising: checking a signal; When the signal is a dual band, a process of determining an interval of a radiating element of an ultra high frequency (UHF) antenna based on a wavelength of a frequency in a very high frequency (VHF) band; And configuring the entire radiating element at the determined radiating element spacing.

A method according to an embodiment of the present disclosure includes: a signal reception method of a phased array radar, the method comprising: checking a received signal; When the received signal is a signal received in a dual band, a process of determining that the signal is received at the interval of the radiating element of the UHF (Ultra High Frequency) antenna determined based on the wavelength of the frequency of the VHF (Very High Frequency) band ; Checking whether the received signal is a signal in a UHF (Ultra High Frequency) band; And when the received signal is a signal in the UHF band, transmitting the received signal to a path without a frequency multiplier.

A method according to an embodiment of the present disclosure includes: a signal reception method of a phased array radar, the method comprising: checking a received signal; And when the received signal is a signal received in a dual band, it is determined that the signal is received at intervals of radiating elements of an UHF (Ultra High Frequency) antenna determined based on a wavelength of a frequency in a Very High Frequency (VHF) band. It includes the process.

An apparatus according to an exemplary embodiment of the present disclosure includes an apparatus for constructing a radiating element of a phased array radar, comprising: a transceiver for transmitting and receiving signals; And checking the signal, and when the signal is dual band, determine the spacing of the radiating elements of the UHF (Ultra High Frequency) antenna based on the wavelength of the frequency of the Very High Frequency (VHF) band and the determined radiating element spacing It includes a control unit constituting the entire radiation element.

An apparatus according to an embodiment of the present disclosure, In the signal receiving apparatus of a phased array radar, Transceiver for transmitting and receiving the signal; And checking the received signal, and when the received signal is a signal received in a dual band, at intervals of radiating elements of the Ultra High Frequency (UHF) antenna determined based on the wavelength of the frequency in the Very High Frequency (VHF) band. Determine that the signal has been received, check whether the received signal is a signal in the UHF (Ultra High Frequency) band, and when the received signal is a signal in the UHF band, the received signal in a path without a frequency multiplier It includes a control unit to transmit.

An apparatus according to an embodiment of the present disclosure, In the signal receiving apparatus of a phased array radar, Transceiver for transmitting and receiving the signal; And checking the received signal, and when the received signal is a signal received in a dual band, the spacing of the radiating elements of the Ultra High Frequency (UHF) antenna determined based on the wavelength of the frequency in the Very High Frequency (VHF) band. It includes a control unit for determining that the signal has been received.

The present disclosure may enable a phased array radar configuration operable with a high efficiency UHF/VHF dual band.

The present disclosure can increase the probability of target detection because the RCS characteristic is wrong with respect to frequency.

In the present disclosure, the TRM configuration may be possible even if the ADC and DDC structures are not incorrectly taken for each band by configuring the frequency multiplying at the receiving end of the TRM.

The present disclosure can use UHF and VHF two bands when the frequency is narrow, so that equipment operation flexibility can be improved.

1A is a block diagram schematically illustrating a transmitting end of a phased array radar apparatus according to an embodiment of the present disclosure;
1B is a block diagram schematically showing an array antenna unit 110 of a transmitting end 100 of a phased array radar device according to an embodiment of the present disclosure;
2 is a block diagram schematically showing a receiving end of a phased array radar apparatus according to an embodiment of the present disclosure;
3 is an exemplary view of a dual-band capable radiation device according to an embodiment of the present disclosure;
4 is an exemplary view of an array antenna composed of radiation elements at wavelength/2 intervals in the frequency of the UHF band;
5 is an exemplary view showing a beam steering principle of a phased array antenna;
6 is an exemplary view of an array antenna composed of radiation elements at wavelength/2 intervals of a frequency in a VHF band according to an embodiment of the present disclosure;
7 is an exemplary view of a high efficiency VHF/UHF dual band array antenna according to an embodiment of the present disclosure;
8 is an exemplary view showing a high output amplifying element and a low noise amplifying element gain characteristic;
9 is a schematic diagram of a typical TRM;
10A and 10B are TRM structure diagrams for receiving a UHF band and a VHF band (UHF/2) according to an embodiment of the present disclosure;
11 is an operational flowchart of a TRM receiving a UHF band and a VHF band (UHF/2) according to an embodiment of the present disclosure; And
12 is a flowchart illustrating a method of configuring a radiation device according to an embodiment of the present disclosure.

Hereinafter, various embodiments of the present disclosure will be described with reference to the accompanying drawings. However, this is not intended to limit the techniques described in this disclosure to specific embodiments, and should be understood to include various modifications, equivalents, and/or alternatives of embodiments of the present disclosure. . In connection with the description of the drawings, similar reference numerals may be used for similar elements.

In the present disclosure, expressions such as “having”, “having”, “comprising”, or “can include” include the presence of a corresponding characteristic (eg, a component such as a numerical value, function, operation, or part). And does not exclude the presence of additional features.

In the present disclosure, expressions such as “at least one of A or B”, “at least one of A or/and B”, or “one or more of A or/and B” may include all possible combinations of items listed together. . For example, "A or B", "at least one of A and B", or "at least one of A or B" includes (1) at least one A, (2) at least one B, Or (3) all cases including both at least one A and at least one B.

Expressions such as “first”, “second”, “first”, or “second” as used in the present disclosure may modify various components, regardless of order and/or importance, and change one component to another It is used to distinguish from the components, but does not limit the components. For example, the first user device and the second user device may indicate different user devices regardless of order or importance. For example, the first component may be referred to as a second component without departing from the scope of the rights described in the present disclosure, and similarly, the second component may be referred to as a first component.

Some component (eg, first component) is "(functionally or communicatively) coupled with/to" another component (eg, second component), or " When referred to as "connected to", it should be understood that any of the above-described components may be directly connected to the above-described other components, or may be connected through other components (eg, the third component). On the other hand, when a component (eg, the first component) is referred to as being “directly connected” or “directly connected” to another component (eg, the second component), it is different from a component. It can be understood that there are no other components (eg, third components) between the elements.

The expression "configured to" used in the present disclosure may be "suitable for" or "having the capacity to" depending on the situation. It can be used interchangeably with ", "designed to", "adapted to", "made to", or "capable of". The term "configured (or set) to" may not necessarily mean only "specifically designed to" in hardware. Instead, in some situations, the expression "device configured to" may mean that the device "can" with other devices or parts. For example, the phrase “processors configured (or set) to perform A, B, and C” means by executing a dedicated processor (eg, an embedded processor) to perform the operation, or one or more software programs stored in the memory device. , It may mean a general-purpose processor (eg, a CPU or an application processor (AP)) capable of performing the corresponding operations.

The terms used in the present disclosure are only used to describe specific embodiments, and may not be intended to limit the scope of other embodiments. Singular expressions may include plural expressions, unless the context clearly indicates otherwise. Terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by a person skilled in the art described in the present disclosure. Among the terms used in the present disclosure, terms defined in the general dictionary may be interpreted as having the same or similar meanings in the context of the related art, and are ideally or excessively formal meanings unless explicitly defined in the present disclosure. Is not interpreted as In some cases, even terms defined in the present disclosure cannot be interpreted to exclude embodiments of the present disclosure.

Array antenna device according to various embodiments of the present disclosure is a device having an array antenna, for example, a smartphone (smartphone), tablet PC (tablet personal computer), mobile phone (mobile phone), video phone, electronic E-book reader, desktop personal computer (PC), laptop personal computer, netbook computer, workstation, server, personal digital assistant (PDA), portable multimedia player), an MP3 player, a mobile medical device, a camera, or a wearable device.

The present disclosure proposes a radar operating in a dual band by being configured to operate in addition to the frequency of the VHF (UHF/2) band as a phased array radar operable for UHF signals.

1A is a block diagram schematically illustrating a transmitting end of a phased array radar device according to an embodiment of the present disclosure.

The transmitting end 100 of the phased array radar device includes an array antenna unit 110, a transmitter unit 120, a digital conversion unit 130, and the like.

The array antenna unit 110 may be composed of a plurality of single antennas. In the present disclosure, it is assumed and assumed that the number of single antennas is seven, but this is only an example, and embodiments of the present disclosure may be applied to two or more single antennas.

The array antenna unit 110 includes, for example, 7 radiating elements and 7 TRMs, and adjusts the phase of the excitation current of each radiating element to make the antenna in a specific direction and the same phase to form a main beam. The shape of the beam can be determined by the weight of the array and the characteristics of the radiating element formed by the displacement and high-power amplifier (SSPA). The array antenna unit 110 collects the output level and phase information of each TRM and transmits it to the timing/control processing unit (not shown in the drawing) of the transmitter 120. The timing/control processing unit receives the information of each TRM and changes the output level and phase information of the DDS (Direct Digital Synthesizer) to adjust the phase according to the same output level and beam steering.

The transmitter 120 transmits the DDS 122 inside the transmitter 120 as a pulse of UHF frequency or VHF frequency through a command, and is connected to the TRM 114 to amplify and radiate it to the radiation element 112. The channel of the transmitting unit including the DDS 122, the TRM 114, and the radiating element 112 are each composed of 1 path.

The digital converter 130 converts an analog signal into a digital signal composed of binary codes in order to process the signal in the digital stage.

Although not illustrated in FIG. 1A, the transmitting end 100 of the phased array radar device may further include a control unit. The control unit of the transmitting end 100 of the phased array radar device may control the overall operation of the phased array radar device. The control unit of the transmitter 100 of the phased array radar device may be implemented by one or more processors, and may include one or more of an application processor, a microcontrol unit (MCU), and a communication processor (CP). Can. The control unit of the transmitting end 100 of the phased array radar device may be implemented as a system on chip (SoC) or a system in package (SiP). The control unit of the transmitting end 100 of the phased array radar device is, for example, at least one other component (eg, hardware or software component) of the transmitting end 100 of the phased array radar device connected to the control unit by driving an operating system or an application program. ) Can be controlled, and various data processing and operations can be performed. In addition, the control unit may load and process a command or data received from at least one of other components into a volatile memory (not shown), and store the result data in a non-volatile memory (not shown).

The memory (not shown) may include volatile memory or non-volatile memory. Volatile memory may be composed of, for example, random access memory (RAM) (eg, DRAM, SRAM, or SDRAM). Non-volatile memory includes, for example, one time programmable read-only memory (OTPROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), and electrically erasable programmable read-only (EPMROM). memory), mask ROM, flash ROM, flash memory, hard drive, or solid state drive (SSD).

The memory (not shown) may store, for example, instructions or data related to at least one other software component of the transmission terminal 100 of the phased array radar device, for example, a program.

1B is a block diagram schematically illustrating an array antenna unit 110 of a transmitting end 100 of a phased array radar device according to an embodiment of the present disclosure.

The array antenna unit 110 includes a radiation element 112, a transmit/receive module (TRM) 114, and the like.

The radiation element 112 serves to adjust the impedance matching and the radiation pattern between the phase shifter and the free space. The radiation element 112 may be installed by arranging hundreds to tens of thousands of element antennas (for example, using a dipole or doublet antenna) in a predetermined pattern.

The TRM 114 is a component that generates a high frequency required for radar transmission and reception functions, and a gain regulator for forming a beam and a phase shifter capable of changing a radar traveling direction are built in, so that it is possible to search in all directions.

The radiation element 112 and the TRM 114 are described in block form in FIG. 1B. However, since it is assumed and assumed that the number of single antennas is seven, the number of the radiation elements 112 and the TRM 114 may be, for example, seven.

2 is a block diagram schematically showing a receiving end of a phased array radar apparatus according to an embodiment of the present disclosure.

The receiving end 200 of the phased array radar device includes an array antenna unit 210, a receiver 220, and a digital conversion unit 230.

The array antenna unit 210 includes a radiation element and a TRM, receives a UHF or VHF (UHF/2) band from the TRM, and transmits it to the digital conversion unit 220. The receiving channel of the receiver 230, the TRM, and the radiating element may be composed of 1 path, respectively.

The receiving unit 230 receives and processes a signal received through an array antenna. The receiver 230 may be, for example, a displacement device, a low noise amplifier (LNA), or a solid state power amplifier (SSPA).

The digital conversion unit 220 converts an analog signal into a digital signal composed of binary codes and processes digital down conversion (DDC) in order to process a signal in a digital stage for a signal transmitted through the receiving unit 230.

Although not illustrated in FIG. 2, the receiving end 200 of the phased array radar device may further include a control unit. The control unit of the receiving end 200 of the phased array radar device may control the overall operation of the phased array radar device. The control unit of the receiving terminal 200 of the phased array radar device may be implemented by one or more processors, and includes one or more of an application processor, a microcontrol unit (MCU), and a communication processor (CP). can do.

In order to construct a high-efficiency UHF and VHF dual-band capable phased array radar, pre-configuration of a dual-band capable radiation element and TRM is required. First, a dual-band capable radiation element should have characteristics as shown in FIG. 3 for a yagida radiation element that is generally optimized in a dual band.

3 is an exemplary diagram of a dual-band capable radiation device according to an embodiment of the present disclosure.

FIG. 3 illustrates a dual band, which refers to a frequency band operating the UHF band frequency 320 and the VHF band frequency 310 simultaneously. In an embodiment of the present disclosure, a scheme with high gain while supporting dual band is proposed.

An array antenna of 00x00 consisting of the radiation element 300 is configured, and the spacing of the radiation elements is generally configured at a wavelength/2 interval of the center frequency of the UHF band.

4 is an exemplary view of an array antenna composed of radiation elements at wavelength/2 intervals in the frequency of the UHF band.

Referring to FIG. 4, a distance d 410 between radiating elements among a plurality of radiating elements may be determined at intervals of wavelength/2 of the UHF band center frequency. In addition to reference numeral 410, an interval between other radiating elements may also be determined as an interval of wavelength/2 of the UHF band center frequency.

Meanwhile, the beam steering of the phased array antenna is performed by the following principle.

5 is an exemplary view showing a beam steering principle of a phased array antenna.

There are largely mechanical and electronic methods of beam steering of the antenna. The mechanical method mainly adjusts the direction of the beam by changing the structure of the antenna in a physical way from the reflective antenna, and the electronic method adjusts the beam direction by adjusting the phase or delay time of the signal supplied to each element from the array antenna. Adjust. In a typical example, in the case of an antenna driving method by a physical method, a reflector antenna is frequently used. The beam steering by this physical method is somewhat slow in beam steering speed, but has a simple structure.

만큼 앞서야 된다.

는 방사 소자 B(520)로부터 진행 거리

(530)에 의해 정의된다.On the other hand, a phased array antenna is typically used in the electronic beam steering method. In the case of this method, it is difficult to manufacture and generates a lot of heat by fast calculation, so it is a complex structure requiring a cooling device, but has a faster beam scheduling than a mechanical method, and has various modes and arrays as shown in FIG. 5 without driving an antenna. (Array) The phase of element B 520 is phase delayed than that of element A 510 in order to control the beam of the antenna.

You have to be ahead.

Is the traveling distance from the radiating element B 520

530.

(530)는

와 같이 계산되며, 넓은 면(법선방향)에서

도 만큼 떨어지도록 빔을 제어하기 위하여 필요한 소자의 위상차는 하기 <수학식 1>로부터 획득될 수 있다.Running distance

530 is

Calculated as, and in a wide plane (normal direction)

The phase difference of the elements necessary to control the beam so as to fall by a degree can be obtained from <Equation 1> below.

Accordingly, according to Equation 1, the antenna of the UHF band may be capable of beam steering by setting and applying a phase angle of each radiation element according to beam steering angles (Az, El). Here, Az represents azimuth information and El represents elevation angle information.

At this time, the total array antenna gain may be calculated as '10xlog (# number of copy elements) + radiation element gain'. For example, as shown in FIG. 4, if one radiation element is 5dBi in the operating band and 168 radiation elements, the gain of the array antenna is 27.25dBi.

Equally, there are two methods proposed for use in the VHF band with the same array antenna.

The first method according to an embodiment of the present disclosure is a method of exiting only radiating elements arranged at a wavelength/2 interval of a frequency in the VHF band.

A second method according to an embodiment of the present disclosure is a method in which the radiation elements in four units have the same phase, and the phase is set according to the entire beam steering angle.

In the first method according to an embodiment of the present disclosure, since only a portion of the radiating element is exited, the overall array antenna gain is reduced.

The second method according to an embodiment of the present disclosure is a method in which the array antenna gain is relatively increased because the entire radiating element is exited.

First, the first method according to an embodiment of the present disclosure in terms of an array antenna is as follows.

The specific frequency K MHz wavelength of the UHF band is A cm, the wavelength/2 is A/2 cm, and the spacing of the radiating elements in FIG. 4 is arranged A/2 cm.

The UHF band array antenna is configured with K/2 MHz for operation in the VHF band. Then (A/2)*2. Therefore, in order to operate the UHF band array antenna as a VHF, only the orange portion (eg, 610, 620...) as shown in FIG. 6 operates the corresponding TRM and transmitter/digital converter. 6 is an exemplary diagram of an array antenna composed of radiation elements at wavelength/2 intervals of a frequency in a VHF band according to an embodiment of the present disclosure.

At this time, the gain of the array antenna is 10xlog(42)+5 = 21.2dBi, assuming that the gain of the radiating element is 5dBi. The gain (21.2dBi) of the array antenna is lower than 27.25dBi.

The second method according to an embodiment of the present disclosure for realizing a dual band from the viewpoint of the array antenna while increasing the array antenna gain is as follows.

7 is an exemplary diagram of an array antenna composed of radiation elements at wavelength/2 intervals of a frequency in a VHF band according to an embodiment of the present disclosure.

The radiating elements are arranged at a wavelength/2 of the frequency of the UHF band, and the distances 710 and 720 between the radiating element centers of the four units (orange box) 730 and the adjacent radiating element centers of four units are as shown in FIG. 7. It is arranged at intervals corresponding to the VHF frequency (ie A/2 cm). At this time, the radiating elements (4) of the orange box have the same phase value, and the exiting phase value is changed in units of the orange box according to the direction of beam steering. At this time, the gain of the VHF band of the array antenna is theoretically calculated as follows. For example, assuming that the gain of one radiating element is 5 dBi, the gain of the orange box and the gain of the entire array antenna are as shown in Equations 2 and 3 below.

When this method is applied, it may be possible to implement a dual-band array antenna with higher efficiency than the first method.

From the perspective of TRM, when a wide band characteristic AMP (amplifier) element is applied to realize a dual band, the lower the frequency is, the higher the radiation element gain is, and similarly, an appropriate gain according to the TRM transmission gain and the size of the signal input to the antenna. The gain of the low noise amplifier (LNA) to give a high is also high, so additional compensation is possible.

In the present invention, in order to operate the frequency in a dual band, the radiation elements are arranged at a wavelength/2 of the frequency of the UHF band, and the radiation elements are grouped in four units, where four units (orange boxes) of radiation elements are arranged. The distance between the center of and the center of the radiating elements of the adjacent 4 units is determined by the interval corresponding to the VHF frequency (ie A/2 cm).

The radiating elements (4) have the same phase value and change the exiting phase value in orange box units according to the direction of beam steering.

An element capable of determining the distance between the center of the radiating element of 4 units (orange box, 730) and the center of the radiating element of 4 adjacent units is the distance to wavelength/2. For fine-view tuning, the distance between the x-axis between the radiating elements (dx) and the distance between the y-axis (dy) is optimized by grating lobe. The exiting phase of each radiation element according to the beam steering angle is determined according to the value. If the dual band is to be operated, the optimized dx and dy analysis of the two bands' grating lobe is minimized.

That is, the distance between radiating elements is optimized based on the grating lobe and the exiting phase of each radiating element according to the beam steering angle may be determined according to the optimized value.

8 is an exemplary diagram showing a gain characteristic of a high output amplifying element and a low noise amplifying element.

8 shows a high output amplifying device characteristic 810, and it can be seen that the operating power gain G _p decreases in the UHF band. In addition, FIG. 8 shows a low output amplifying element characteristic 820, and it can be seen that the forward transmission coefficient S ₂₁ decreases in the UHF band.

Next, a modified structure of TRM is needed to operate in the UHF band and VHF band.

9 is a structural diagram of a typical TRM.

The general TRM is largely divided into a transmit state 910 and a receive state 920.

The transmitter 910 and the receiver 920 include a duplexer (circulator), isolator, limiter, low noise amplifier (LNA), phase shifter, high-power amplifier, common-leg circuit (CLC), and attenuator. Detailed killing of each component will be omitted.

10A and 10B are TRM structure diagrams for receiving a UHF band and a VHF band (UHF/2) according to an embodiment of the present disclosure.

TRM according to an embodiment of the present disclosure is largely divided into a transmitter 1010 and a receiver 1020. The difference between FIGS. 9 and 10A is as follows.

In order to receive the dual band, AMP 1030, UHF Band Pass Filter (BPF) 1040, first single pole double throw (SPDT) 1050, frequency multiplier in reference number 1025 described in the TRM receiver as shown in FIG. 1060, a second SPDT 1070, and the like.

According to an embodiment of the present disclosure, when a UHF band signal is received, it goes to a path without a frequency multiplier 1060, and when a VHF (UHF/2) signal is received, it is received by a path with a frequency multiplier 1060 and multiplied by 2 times and amplified. Becomes the digital conversion unit. Regardless of the UHF and VHF bands, the received band is multiplied twice for the VHF band signal inside the TRM, and the UHF signal is amplified and processed without multiplication.

So it is configured not to change the structure of ADC and DDC (Digital Down Converter) separately.

11 is an operation flowchart of a TRM receiving a UHF band and a VHF band (UHF/2) according to an embodiment of the present disclosure.

The TRM receives a signal in step 1101.

The TRM checks whether the signal received in step 1103 is a UHF band frequency or a VHF band frequency.

If the received signal is in the UHF band frequency, the TRM receives in step 1105 in a path without a frequency multiplier.

However, if the received signal is a VHF band frequency, the TRM is received in a path with a frequency multiplier in step 1107. In this case, the frequency is multiplied by 2 for the VHF band frequency, and amplified and processed without multiplication for the UHF band frequency.

12 is a flowchart illustrating a method of configuring a radiation device according to an embodiment of the present disclosure.

The TRM checks the signal received in step 1201.

The TRM checks whether the signal received in step 1203 is dual band.

If the received signal is a dual band, in step 1205, in order to use the UHF antenna as the VHF antenna according to an embodiment of the present disclosure, in step 1205, the radiating element spacing of the UHF antenna is determined as wavelength/2 of the frequency of the VHF band.

However, if the received signal is not a dual band, TRM determines in step 1207 the spacing of the radiating elements of the UHF antenna as wavelength/2 of the center frequency of the UHF band.

Needless to say, the operation of FIG. 12 is applicable to both the operation of the TRM transmitter and the operation of the receiver.

When the present invention is applied, it is possible to construct a phased array radar capable of operating in a high-efficiency UHF/VHF dual band. Since the RCS characteristic is wrong with respect to frequency, the probability of target detection can be increased. It is possible to configure the frequency multiplying at the receiving end of the TRM so that the ADC and DDC structures are not carried in each band incorrectly. In addition, when the frequency is narrow, two bands of UHF and VHF can be used, which increases the flexibility of equipment operation.

The above-described contents may be modified and modified without departing from the essential characteristics of the present invention by those skilled in the art to which the present disclosure pertains. Therefore, the embodiments of the present disclosure are not intended to limit the technical spirit, but to explain, and the scope of the technical spirit of the present disclosure is not limited by these embodiments. The scope of protection of the present disclosure should be interpreted by the claims below, and all technical spirits within the scope equivalent thereto should be interpreted as being included in the scope of the present disclosure.

Claims (9)

A device for constructing a radiating element of a phased array radar,
A transceiver for transmitting and receiving signals; And
Check the signal, and when the signal is a dual band, determine the spacing of the radiating elements of the UHF (Ultra High Frequency) antenna based on the wavelength of the frequency of the VHF (Very High Frequency) band and determine the spacing of the radiating elements A radiating element constituting device of a phased array radar, comprising a control unit constituting the entire radiating element. According to claim 1,
The gain of an antenna using the phased array radar is determined based on the number of the total number of radiated elements and the gain of a unit radiation element grouped by the total number of radiated elements. According to claim 1,
The control unit is further configured to generate a plurality of unit copy groups by grouping the complex elements into a predetermined number of units, and to determine a distance between a center of a copy element in a unit copy group and a center of a copy element in an adjacent unit copy group. A device for constructing a radiating element of a phased array radar. According to claim 3,
The distance between the center of the radiation elements in the unit radiation group and the center of the radiation elements in the adjacent unit radiation group is determined by the wavelength/2 of the frequency of the VHF band. According to claim 4,
Radiation element configuration device of a phased array radar, characterized in that the radiation elements in the unit radiation group have the same phase. In the signal receiver of the phased array radar,
A transceiver for transmitting and receiving the signal; And
Check the received signal, and if the received signal is a signal received in a dual band, the signal at the interval of the radiating element of the UHF (Ultra High Frequency) antenna determined based on the wavelength of the frequency of the Very High Frequency (VHF) band Is determined to be received, and confirms whether the received signal is a signal in the UHF (Ultra High Frequency) band, and when the received signal is a signal in the UHF band, transmits the received signal in a path without a frequency multiplier Signal receiving device of the phased array radar, characterized in that it comprises a control unit. The method of claim 6,
The control unit is a signal receiving apparatus of a phased array radar, characterized in that further configured to transmit the received signal to the path with the frequency multiplier when the received signal is not a signal in the UHF band. In the signal receiver of the phased array radar,
A transceiver for transmitting and receiving the signal; And
Checking the received signal, and when the received signal is a signal received in a dual band, at intervals of radiating elements of the UHF (Ultra High Frequency) antenna determined based on the wavelength of the frequency in the Very High Frequency (VHF) band And a control unit for determining that the signal has been received. The method of claim 8,
The gain of an antenna using the phased array radar is determined based on the number of the total number of radiated elements and the gain of a unit radiation element grouped by the total number of radiated elements.

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