WO2014042395A1 - 광대역 주파수 검출기 - Google Patents
광대역 주파수 검출기 Download PDFInfo
- Publication number
- WO2014042395A1 WO2014042395A1 PCT/KR2013/008103 KR2013008103W WO2014042395A1 WO 2014042395 A1 WO2014042395 A1 WO 2014042395A1 KR 2013008103 W KR2013008103 W KR 2013008103W WO 2014042395 A1 WO2014042395 A1 WO 2014042395A1
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- Prior art keywords
- amplifier
- signal
- frequency
- band
- lna
- Prior art date
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- 238000000034 method Methods 0.000 claims description 3
- 230000001939 inductive effect Effects 0.000 abstract description 2
- 238000012545 processing Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000035945 sensitivity Effects 0.000 description 6
- 230000010355 oscillation Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 208000010201 Exanthema Diseases 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 201000005884 exanthem Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 206010037844 rash Diseases 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
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- G—PHYSICS
- 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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/021—Auxiliary means for detecting or identifying radar signals or the like, e.g. radar jamming signals
- G01S7/022—Road traffic radar detectors
-
- G—PHYSICS
- 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
- G01S13/91—Radar or analogous systems specially adapted for specific applications for traffic control
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
-
- G—PHYSICS
- 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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
-
- G—PHYSICS
- 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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/03—Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
Definitions
- the present invention relates to a wideband frequency detector, and more particularly, to a frequency detector for detecting all signals for inducing safe driving of a vehicle and a radar signal for grasping the speed of the vehicle.
- the following signals are used for the types of signals used in these measuring instruments and detectors, depending on the instrument used.
- speed gun to detect the speed of the vehicle to prevent the speed of the vehicle is X-BAND (10.525 GHz), Ku-BAND (13.450 GHz), K-BAND (24.150 GHz), SUPERWIDE Ka-BAND (Various distributions between 33.000-36.000 GHz), and the use of LASER (having a wavelength of 800 nm-1100 nm), and safety to inform road information for safe operation of the vehicle.
- the SAFETY ALERT SYSTEM uses three frequencies from 24.070 to 24.230 GHz to transmit three pieces of information: railroad crossings, under construction, and emergency vehicles.
- the SAFETY WARNING SYSTEM uses frequencies from 24.075 to 24.125 GHz. 64 types of information such as fog area, construction site, school area, and speed reduction are coded and transmitted.
- Such safety-related transmission and reception systems are currently being activated mainly in the United States, are spreading worldwide, and are expected to have a great relationship with future intelligent transportation systems (ITS).
- ITS intelligent transportation systems
- the broadband radar detector includes a horn antenna 10, a signal processor 20 for detecting a signal received by the horn antenna 10, a laser module 30 for receiving a laser signal, and the signal.
- a central processing unit 40 for controlling the detection of the signals in the processing unit 20 and the laser module 30, visual display means 50 for visually displaying the detected signals, and amplifying the detected signals. It is composed of a voice display means 60 to display the voice through the unit 61, the user receives a signal of nine bands of X, VG2, Ku, K, SA, SWS, SUPERWIDE Ka, and laser (laser) It is to help the user's safe operation by outputting the received signal in the best way according to the situation.
- the conventional broadband radar detector receives a frequency of 24 kHz to 36 kHz, it is possible to detect frequencies of K band or Ka band, but to detect X band, VG2 band, and Ku band frequencies. There is a problem that can not be. Therefore, there is a need for a wideband frequency detector capable of detecting wideband frequencies while using MMIC.
- An object of the present invention is to propose a wideband frequency detector capable of detecting a plurality of frequency bands.
- Another object of the present invention is to propose a method of detecting a K band or Ka band frequency as well as an X band frequency using one frequency detector.
- Another problem to be solved by the present invention is to propose a frequency detector that can detect the frequency by quickly moving to the K band or Ka band frequency when detecting the X band frequency.
- Another problem to be solved by the present invention is to propose a frequency detector that can detect the frequency by quickly moving to the X-band frequency when detecting the K band or Ka band frequency.
- the broadband frequency detector of the present invention includes a horn antenna for receiving a signal having a specific frequency, a first amplifier for receiving the signal having a specific frequency from the horn antenna, and a low noise amplified signal from the first amplifier.
- a mixing unit for receiving from the first amplifier, it is disposed in parallel with the first amplifier, characterized in that it comprises a second amplifier for low-noise amplifying the signal received from the horn antenna to deliver to the mixing unit.
- the wideband frequency detector according to the present invention can detect not only the X band frequency but also the K band frequency or the Ka band frequency using one frequency detector.
- the wideband frequency detector of the present invention has an advantage of detecting a corresponding frequency by quickly moving from a specific frequency band to another frequency band by using a plurality of local oscillators and switches.
- 1 illustrates a conventional broadband radar detector.
- FIG. 2 is a block diagram illustrating a configuration of a broadband frequency detector according to an embodiment of the present invention.
- FIG. 3 illustrates waveforms of voltages for controlling signals output from the first local oscillator according to an exemplary embodiment of the present invention.
- 4 is a waveform diagram of signals for controlling the second local oscillator and the third local oscillator
- FIG. 5 is a control waveform diagram of an X-band LNA and a K / Ka-band LNA according to an embodiment of the present invention.
- FIG. 2 is a block diagram illustrating a configuration of a broadband frequency detector according to an embodiment of the present invention.
- a configuration of a broadband frequency detector according to an embodiment of the present invention will be described in detail with reference to FIG. 2.
- the horn antenna 200 receives a signal having a specific frequency from the outside. As described above, the horn antenna 200 of the present invention receives a frequency having a wide bandwidth. In general, the frequency band received by the horn antenna 200 is 10 kHz to 36 kHz.
- the signal received by the horn antenna 200 is a monolithic microwave integrated circuit (MMIC) low-noise amplifier (LNA) 202, which is a first amplifier, and a pseudomorphic pHEMT, which is a second amplifier.
- MMIC monolithic microwave integrated circuit
- LNA low-noise amplifier
- pHEMT pseudomorphic pHEMT
- High Electron Mobility Transistors are delivered to the LNA 204.
- the MMIC LNA 202 is used to receive signals having a K band frequency band and a Ka band frequency band
- the pHEMT LNA 204 is used to search for a signal having an X band frequency band. That is, the MMIC LNA 202 amplifies and outputs a signal having a K band frequency band and a Ka band frequency band, and the pHEMT LNA 204 amplifies and outputs a signal having an X band frequency band.
- pHEMT LNA 204 is used to search for a signal having a frequency near 10 Hz
- the MMIC LNA 202 and the pHEMT LNA 204 receive a signal from the horn antenna 200 and a control signal from the switch controller 216.
- the switch controller 216 controls the operation of the MMIC LNA 202 and the pHEMT LNA 204 using a control signal. That is, the switch controller 216 controls whether the MMIC LNA 202 and the pHEMT LNA 204 are driven using a control signal.
- the signal output from the MMIC LNA 202 and the pHEMT LNA 204 is transferred to the first mixing unit 206.
- the first mixing unit 206 mixes a signal received from the MMIC LNA 202 and the pHEMT LNA 204 with a signal received from the first low-noise amplifier 208 (LNA) 208. Outputs a signal with That is, the first mixing unit 206 mixes the signal received from the first LNA 208 to have a frequency of 1 kHz from the signals received from the MMIC LNA 202 and the pHEMT LNA 204.
- the first LNA 208 amplifies a signal having a specific frequency band generated by the first local oscillator 212 and transfers the signal to the first mixer 206.
- the first local oscillator 212 controls (re-adjusts) the voltage to vary the frequency by the DAC sweep voltage waveform output from the sweep controller 214.
- the first local oscillator 212 generates a frequency by the readjusted voltage, and when the appropriate signal is received, as in the white noise, the sweep voltage is adjusted to generate a certain white noise pulse, and the mid / high frequency noise is removed.
- the signal output from the first mixing unit 206 is transferred to the second LNA 210.
- the second LNA 210 low noise amplifies the received signal and transfers the received signal to the third LNA 218.
- the third LNA 218 low noise amplifies the received signal and transfers the received signal to the fourth LNA 220.
- the fourth LNA 220 low-noise amplifies the received signal and transfers the received signal to the second mixing unit 224.
- 2 illustrates the second to fourth LNAs, but is not limited thereto. That is, the number of LNAs may vary depending on the characteristics of the wideband frequency detector.
- the second mixing unit 224 is already detected according to the band of the received signal among the oscillation frequencies of the second local oscillator 226 or the third local oscillator 228 designed to receive all the signals having the received wideband frequency. Convert the first intermediate frequency to the second intermediate frequency.
- the second local oscillator 226 outputs a signal having a frequency of 550 MHz to 650 MHz by a pulse output from the central processing unit, and the third local oscillator 228 outputs a signal having a frequency of 1500 MHz to 2000 MHz. Rash.
- the oscillation frequency when a signal is received, the oscillation frequency is fixed, so that even if another signal is received, the signal cannot be detected or the frequency should be scanned for a specific time before the received signal disappears.
- the first local oscillation frequency or the third local oscillation frequency may be controlled to quickly receive a signal of another band during signal reception of a specific band. Therefore, the present invention can quickly reset the priority of the received signal in the central processing unit to remove a signal area that is actually meaningless in advance.
- the signal output from the second mixer 224 is transferred to the second filter 230.
- the second filter 230 transmits only the 10 MHz signal from the received signal to the demodulator 232.
- the demodulator 232 detects the received signal and transfers it to the third filter 234 or the fourth filter 236.
- the third filter 234 passes a low frequency band signal for measuring RSSI from the received signal, and the fourth filter 236 passes the specific band signal of the received signal to the central processing unit 238.
- the broadband frequency detector of the present invention displays the operation state of the detector, or other display unit 246 for displaying the necessary information, input unit 244 for inputting the necessary information, outputting the operating state of the detector or other necessary information to the audio output And a voice output unit 242.
- the wideband frequency detector includes a storage unit 240 for storing information necessary for driving the wideband frequency detector, or other necessary information.
- FIG. 3 illustrates waveforms of voltages for controlling signals output from the first local oscillator according to an exemplary embodiment of the present invention.
- the maximum and minimum voltage values are set in advance through the tuning process and stored in memory.
- the present invention is implemented to detect the instantaneous pulsed Doppler signal by performing a continuous short sweep (150 to 153) to increase the detection probability.
- the present invention adjusts the slope of the voltage (DAC voltage) output from the central processing unit to adjust the reception sensitivity for each frequency to be detected. Basically, the larger the slope, the lower the reception sensitivity, and if the slope is gentle, the reception sensitivity is improved. .
- This means that the DAC voltage is applied to the first local oscillator and mixed at the input frequency and the first mixer, where the performance time in this operation is related to sensitivity, which is controlled by the sweep slope.
- the slope of the sweep is smoothed in the frequency range (frequency ranges except 33.8 kHz, 34.7 kHz, and 24.150 kHz) where the sensitivity of motion should be set to the maximum while maintaining the normal operation response speed.
- the frequency of the short signal can be applied, while the sweep slope is performed slightly sharply, while repeatedly sweeping the frequency region sufficiently satisfying the frequency, the frequency reception rate is increased.
- a signal for controlling the second local oscillator or the third local oscillator controls a frequency mixed with the first intermediate frequency and has a built-in flash memory that is a program memory inside the central processing unit to select each local oscillation frequency. Stored in memory.
- FIG. 5 is a control waveform diagram of an X-band LNA (pHEMT LNA) and a K / Ka-band LNA (MMIC LNA) according to an embodiment of the present invention.
- pHEMT LNA X-band LNA
- MMIC LNA K / Ka-band LNA
- FIG. 5 in the case of a sweep section for checking the X-Band detection, only the LNA for the X-Band is operated so that the actual K-Band (24.150 GHz) signal flows into the X-Band test section and is mistaken for a wrong signal. In this case, it is blocked first. In other words, when used by the general user, it is possible to prevent a mistake in the strong K signal noise as an X signal.
- the X-Band LNA is turned off and only the K / Ka band LNA is operated to prevent a strong X-Band signal from flowing as if it is a K or Ka signal.
- 200 horn antenna
- 202 MMIC LNA
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Superheterodyne Receivers (AREA)
- Radar Systems Or Details Thereof (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Abstract
Description
Claims (5)
- 특정 주파수를 갖는 신호를 수신하는 혼 안테나;상기 혼 안테나로부터 특정 주파수를 갖는 상기 신호를 수신하는 제1증폭기;상기 제1증폭기에서 저잡음 증폭된 상기 신호를 상기 제1증폭기로부터 수신하는 혼합부;상기 제1증폭기와 병렬로 배치되며, 상기 혼 안테나로부터 수신된 상기 신호를 저잡음 증폭하여 상기 혼합부로 전달하는 제2증폭기를 포함함을 특징으로 하는 광대역 주파수 검출기.
- 제 1항에 있어서, 상기 제1증폭기와 상기 제2증폭기는 증폭하는 주파수 대역이 상이하며, 상기 혼 안테나에서 수신된 신호 중 원하는 주파수 대역의 신호를 증폭하도록 상기 제1증폭기 또는 제2증폭기의 동작을 제어하는 스위치 제어부를 포함함을 특징으로 하는 광대역 주파수 검출기.
- 제 2항에 있어서, 상기 제1증폭기는 모놀리식 극초단파 집적 회로 저잡음 증폭기(MMIC LNA)이며, 상기 제2증폭기는 부정형 고전자 이동도 트랜지스터 저잡음 증폭기(pHEMT LNA)임을 특징으로 하는 광대역 주파수 검출기.
- 제 3항에 있어서, 상기 제1증폭기는 K밴드 또는 Ka밴드 주파수 대역의 신호를 저잡음 증폭하며, 상기 제2증폭기는 X밴드 주파수 대역의 신호를 저잡음 증폭함을 특징으로 하는 광대역 주파수 검출기.
- 제 4항에 있어서, 상기 혼합부는 상기 제1증폭기 또는 제2증폭기로부터 수신된 신호와 국부 발진부에서 발진된 신호를 혼합하여 출력함을 특징으로 하는 광대역 주파수 검출기.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/428,440 US20150263687A1 (en) | 2012-09-17 | 2013-09-09 | Broadband frequency detector |
CN201380048167.9A CN104797956A (zh) | 2012-09-17 | 2013-09-09 | 宽频侦测器 |
RU2015111200A RU2608949C2 (ru) | 2012-09-17 | 2013-09-09 | Широкополосный частотный детектор |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR1020120102656A KR101244835B1 (ko) | 2012-09-17 | 2012-09-17 | 광대역 주파수 검출기 |
KR10-2012-0102656 | 2012-09-17 |
Publications (1)
Publication Number | Publication Date |
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WO2014042395A1 true WO2014042395A1 (ko) | 2014-03-20 |
Family
ID=48182096
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/KR2013/008103 WO2014042395A1 (ko) | 2012-09-17 | 2013-09-09 | 광대역 주파수 검출기 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20150263687A1 (ko) |
KR (1) | KR101244835B1 (ko) |
CN (1) | CN104797956A (ko) |
RU (1) | RU2608949C2 (ko) |
TW (1) | TWI509257B (ko) |
WO (1) | WO2014042395A1 (ko) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101324572B1 (ko) * | 2013-01-07 | 2013-11-18 | 주식회사 디제이피 | 광대역 주파수 검출기 |
KR101287059B1 (ko) * | 2013-01-07 | 2013-07-23 | 주식회사 디제이피 | 광대역 주파수 검출기 |
CN111970069B (zh) * | 2020-08-18 | 2022-06-21 | 成都爱科特科技发展有限公司 | 一种卫星信号x、ku频段频谱监测传感器及监测方法 |
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2012
- 2012-09-17 KR KR1020120102656A patent/KR101244835B1/ko active IP Right Grant
-
2013
- 2013-09-09 CN CN201380048167.9A patent/CN104797956A/zh active Pending
- 2013-09-09 RU RU2015111200A patent/RU2608949C2/ru not_active IP Right Cessation
- 2013-09-09 US US14/428,440 patent/US20150263687A1/en not_active Abandoned
- 2013-09-09 WO PCT/KR2013/008103 patent/WO2014042395A1/ko active Application Filing
- 2013-09-16 TW TW102133493A patent/TWI509257B/zh not_active IP Right Cessation
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KR20030049989A (ko) * | 2001-12-18 | 2003-06-25 | 주식회사 백금정보통신 | 광대역 레이더 검출기 회로 |
KR20080073804A (ko) * | 2007-02-07 | 2008-08-12 | 주식회사 삼율 | 무선통신기기의 발신신호 감시장치 및 방법 |
US20090016548A1 (en) * | 2007-07-10 | 2009-01-15 | Pavel Monat | Super regenerative (sr) apparatus having plurality of parallel sr amplifiers tuned to distinct frequencies |
KR100999376B1 (ko) * | 2009-12-17 | 2010-12-09 | (주)넥스윌 | 광대역 무선 시스템 |
Also Published As
Publication number | Publication date |
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US20150263687A1 (en) | 2015-09-17 |
RU2015111200A (ru) | 2016-11-10 |
TWI509257B (zh) | 2015-11-21 |
TW201416680A (zh) | 2014-05-01 |
KR101244835B1 (ko) | 2013-03-25 |
RU2608949C2 (ru) | 2017-01-27 |
CN104797956A (zh) | 2015-07-22 |
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