WO2005004324A1 - 光制御型マイクロ波位相形成装置 - Google Patents
光制御型マイクロ波位相形成装置 Download PDFInfo
- Publication number
- WO2005004324A1 WO2005004324A1 PCT/JP2003/008545 JP0308545W WO2005004324A1 WO 2005004324 A1 WO2005004324 A1 WO 2005004324A1 JP 0308545 W JP0308545 W JP 0308545W WO 2005004324 A1 WO2005004324 A1 WO 2005004324A1
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- WO
- WIPO (PCT)
- Prior art keywords
- light
- optical
- signal
- output
- signal light
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/2676—Optically controlled phased array
Definitions
- the present invention relates to an optically controlled microwave open-wave phase forming device applicable to a multi-beam forming circuit for an array antenna that controls a plurality of microwave beams radiated from an array antenna using light waves.
- the conventional optically controlled microphone mouth-wave phase forming device emits first and second light beams whose frequencies differ only by the frequency of the microphone mouth-wave signal, and spatially modulates the first light beam as a signal light beam.
- the signal beam and the local light beam are spatially overlapped and spatially sampled, using the second light beam as a local light beam, by converting the power supply amplitude and phase distribution to each antenna element of the array antenna.
- the sampled light is radiated into a space using an array antenna (for example, see Japanese Patent Application Laid-Open No. (See FIG. 2) and Japanese Patent Application Laid-Open No. 6-276017 (FIG. 3)).
- a conventional light-controlled microphone mouth-wave phase control device described in Japanese Patent Application Laid-Open No. 7-202457 describes an amplitude and phase signal formed by each element of a spatial light modulator and each element of an array antenna. Since the feed signals correspond to one-to-one, only one microwave phase wavefront can be formed with one spatial light modulator, and the feed signal for an array antenna that radiates multiple microwave beams is generated. There was a problem that it could not be created.
- FIG. 3 of Japanese Patent Application Laid-Open No. 6-276017 relates to multi-beam formation.
- the directions of a plurality of beams are determined by the positions of the masks. Therefore, there was a problem that the beams could not be directed in the same direction or overlapped, and the directions of the beams were restricted by each other.
- the present invention has been made to solve the above-described problems, and is directed to a light-controlled microphone mouth-wave phase type capable of simultaneously forming a plurality of microphone mouth-wave phase planes with one spatial light modulator. It is intended to obtain a synthesizing apparatus.
- An optically controlled microphone mouth-wave phase forming device comprises: a first light distributor that splits light emitted from a first light source into two light beams; and two light beams emitted from a second light source.
- a second optical splitter which splits one of the split lights output by the first optical splitter by a predetermined frequency based on the first microwave signal into a first signal light.
- a first optical frequency converter that outputs the second splitter output by the second optical distributor based on the second microwave signal, And a second optical frequency converter for outputting as signal light.
- a first signal light emitting device that converts the first signal light into a predetermined beam width and emits the first signal light into space as a first signal light beam; and converts the second signal light into a predetermined beam width.
- a second signal light emitting device that emits to a space as a second signal light beam, and converts the first and second signal light beams input to different regions into a desired spatial phase distribution by performing phase modulation.
- a spatial light modulator; and an optical multiplexer that converts the first and second signal light beams having different wavelengths output from the spatial light modulator into coaxial optical paths.
- the other split light output by the first light splitter, the other split light output by the second light splitter, and a light combiner that synthesizes the other split light as local light An oral light emitting device that converts the beam into a predetermined beam width and emits it into space as a low-power light beam; first and second signal light beams output by the optical multiplexer; and the local light beam. And a plurality of photoelectric converters that spatially sample the synthesized beam and convert it into a microphone mouth wave signal by heterodyne detection and output the synthesized beam. was provided.
- FIG. 1 is a diagram showing a configuration of an optically controlled microwave phase forming device according to Embodiment 1 of the present invention
- FIG. 2 is a diagram showing a configuration of an optical multiplexer of the optically controlled microwave phase forming device according to Embodiment 1 of the present invention
- FIG. 3 is a diagram showing a configuration of an optical multiplexer of an optically controlled microwave phase forming device according to Embodiment 2 of the present invention.
- FIG. 4 is a diagram showing a configuration of an optically controlled microwave phase forming device according to Embodiment 3 of the present invention.
- FIG. 5 is a diagram showing a configuration of an optically controlled microphone mouth wave phase forming device according to Embodiment 5 of the present invention.
- FIG. 6 is a diagram showing a configuration of an optically controlled microwave phase forming device according to Embodiment 6 of the present invention.
- FIG. 7 is a diagram showing a configuration of an optically controlled microphone mouth wave phase forming device according to Embodiment 7 of the present invention.
- FIG. 1 is a diagram showing a configuration of an optically controlled microwave phase forming device according to Embodiment 1 of the present invention.
- the same reference numerals indicate the same or corresponding parts.
- this device is composed of light sources 10 and 20, optical distributors 12 and 22, optical frequency converters 13 and 23, microwave signal input terminals 14 and 24, Signal light emitting device
- Fig. 2 shows the light control type microwave according to the first embodiment. It is a figure showing composition of an optical multiplexer of a phase formation device.
- the light radiated from the light source 10 is split into two by the optical distributor 12, and the optical frequency converter 13 is connected to the first microwave signal input terminal 14.
- the one split light is shifted by a predetermined frequency by the microwave signal of
- the signal light 11 having the shifted frequency is converted into a signal light beam 11 having a predetermined beam width via a signal light emitting device 15 composed of, for example, an optical fiber and a lens, and emitted to space.
- the signal light beam 11 emitted to space is input to the spatial light modulator 30.
- an optical frequency conversion for shifting the frequency of light for example, an optical frequency shifter using an acousto-optic effect has been commercialized.
- the light radiated from the light source 20 having a different wavelength from the light source 10 is split into two by the optical demultiplexer 22, and the optical frequency converter 23 is connected to the microwave signal input terminal 24.
- the one split light is shifted by a predetermined frequency by the input second microwave signal, and is output as signal light 21.
- the signal light 21 whose frequency has shifted is converted into a signal light beam 21 having a predetermined beam width via a signal light emitting device 25 composed of, for example, an optical fiber and a lens, and is transmitted to the spatial light modulator 30.
- Light beam 11 is input to a different area.
- the signal light beam 11 and the signal light beam 21 input to different regions on the spatial light modulator 30 are spatially phase-modulated according to the input signal from the spatial light modulator controller 31, respectively.
- the spatial light modulator 30 outputs signal light beams (output light) 16 and 26 converted into a desired spatial phase distribution.
- the spatial light modulator 30 includes, for example, a liquid crystal element.
- the signal light beams 16 and 26 from the spatial light modulator 30 are input to the optical multiplexer 40.
- the optical multiplexer 40 changes the optical path according to the wavelength, the incident position, and the incident angle of the input signal light, converts the signal light beams 16 and 26 having different incident positions and wavelengths into coaxial optical paths, and outputs them.
- the optical multiplexer 40 can be realized by utilizing the wavelength dependence of the refraction angle and reflection angle of a wavelength dispersion element such as a prism or a diffraction grating.
- a wavelength dispersion element such as a prism or a diffraction grating.
- FIG. 2 it can be configured by combining two prisms 41 and 42.
- the incident light beams (signal light beams 16 and 26) having different wavelengths incident on the prism 41 are respectively The light is refracted at different angles depending on the wavelength, and is emitted from the prism 41 at different angles.
- a prism 42 is installed at a place where two emitted light beams intersect, and is made incident on the prism 42. The intersection is uniquely determined by the conditions of incidence of the two incident lights on the prism 41 and the refraction angle of each light determined by the wavelength. Since the two lights that have entered the prism 42 at different angles are refracted at different angles by the prism 42 according to the wavelength of each light, it is
- the signal light beam (combined light) 43 emitted from the optical multiplexer 40 and converted into a coaxial optical path is input to the optical fiber array 54 via the beam combiner 52.
- the other branched light 18 radiated from the light source 10 and branched by the light distributor 12 and the other branched light 28 radiated from the light source 20 and branched by the light distributor 22 are low.
- the light is synthesized by a light combiner 50 as a light beam, converted into a local light beam having a predetermined beam width through a local light emitting device 51 composed of an optical fiber, a lens, and the like, and the beam combiner 52 is formed.
- the signal beam (combined light) 43 is spatially superimposed on the signal beam 43 to form a combined beam, which is input to the optical fiber array 54.
- a lens array 53 may be provided on the incident end side of the optical fiber array 54 in order to increase the coupling efficiency of input light to each optical fiber constituting the optical fiber array 54.
- each optical fiber Light input to each optical fiber propagates through the optical fiber and is input to each photoelectric converter 55 connected to each optical fiber.
- the light input to each photoelectric converter 55 is converted into a microphone mouth wave signal by heterodyne detection, and is output from the microphone mouth wave signal output terminal 56.
- the phase distribution of each microphone mouth wave signal is the phase distribution given by the spatial light modulator 30.
- each output signal from the microwave signal output terminal 56 is fed to each antenna element of the array antenna via a microwave amplifier or the like as necessary, and radiated into space.
- a microwave output signal from a certain photoelectric converter 55 is shown below.
- Light source 10 frequency The number is set to fol, the frequency of the microwave signal is set to fml, and the phase modulation amount of the element of the spatial light modulator 30 that becomes incident light to the optical fiber of interest is set to ⁇ 1.
- the frequency of the light source 20 be ⁇ o 2
- the frequency of the microwave signal be fm 2
- the amount of phase modulation be ⁇ 2.
- the light input to the photoelectric converter 55 is composed of the following four frequency components, assuming that each amplitude is 1.
- the photoelectric converter 55 outputs the sum or difference component of these arbitrary two components. If the frequency difference between the light source 10 and the light source 20 is larger than the frequency band of the photoelectric converter 55, the frequency of the microwave signal output from the photoelectric converter 55 will be the following two components, and The phase modulation amounts ⁇ 1 and ⁇ 2 given by the optical modulator 30 are superimposed on the microwave signal output from the photoelectric converter 55.
- FIG. 3 is a diagram showing a configuration of an optical multiplexer of an optically controlled microwave phase forming device according to Embodiment 2 of the present invention.
- the wavelength dependence of the reflection angle of a wavelength dispersion element such as a reflection type diffraction grating is used. It can also be realized. For example, it can be realized by combining two diffraction gratings 44 and 45 as shown in FIG. The incident lights (signal light beams 16 and 26) having different wavelengths incident on the diffraction grating 44 are reflected at different angles according to the wavelength and the incident angle, respectively. A diffraction grating 45 is installed at a place where two reflected lights intersect, and the diffraction grating 45 is made incident on the diffraction grating 45.
- the crossing point is uniquely determined from the conditions of incidence on the diffraction grating 44 and the refraction angle determined by the wavelength.
- the two lights incident on the diffraction grating 45 at different angles are reflected at different angles by the diffraction grating 45 according to the wavelength of each light, so that the reflected light can be converted to the same optical path.
- FIG. 4 is a diagram showing a configuration of an optically controlled microwave phase forming device according to Embodiment 3 of the present invention.
- this device includes light sources 10 and 20, light splitters 12 and 22, optical frequency converters 13 and 23, microwave signal input terminals 14 and 24, and Optical synthesizer 46, signal light emitting means 47, optical demultiplexer 49, spatial light modulator 30, spatial optical modulator controller 31, optical multiplexer 40, optical synthesizer 5 0, a local light emitting device 51, a beam combiner 52, a lens array 53, an optical fiber array 54, a photoelectric converter 55, and a microwave signal output terminal 56.
- Optical synthesizer 46 signal light emitting means 47, optical demultiplexer 49, spatial light modulator 30, spatial optical modulator controller 31, optical multiplexer 40, optical synthesizer 5 0, a local light emitting device 51, a beam combiner 52, a lens array 53, an optical fiber array 54, a photoelectric converter 55, and a microwave signal output terminal 56.
- the frequency-changed signal lights 11 and 21 are combined by the light combiner 46.
- the combined light 48 is converted into a signal light beam having a predetermined beam width via a signal light emitting device 47 and input to the optical demultiplexer 49.
- This optical splitter 4 In step 9, the input light is output from different places depending on the wavelength of the input light.
- the optical demultiplexer 49 is equivalent when the input and output directions of the optical demultiplexer 40 are switched, and the signal light beams 11 and 21 are output from different locations of the optical demultiplexer 49 depending on the wavelength band. I do.
- the signal light beams 11 and 21 enter different regions of the spatial light modulator 30.
- the configuration of the optical demultiplexer 49 can be realized, for example, by inputting light from the output side of the optical multiplexer 40 shown in FIGS. 2 and 3, and outputting the light from the input side.
- the wavelength dependence of the input / output direction and location of the optical multiplexer 40 and the optical demultiplexer 49 can be eliminated, and even if light sources of different wavelength bands are used, the optical multiplexer 40 and the optical demultiplexer 49 can be used. The same arrangement can be used.
- FIG. 5 is a diagram showing a configuration of an optically controlled microwave phase forming device according to Embodiment 5 of the present invention.
- this device is composed of light sources 10 and 20, optical distributors 12 and 22, and an optical frequency Number converters 13 and 23, microwave signal input terminals 14 and 24, signal light emitting devices 15 and 25, spatial light modulator controller 31 and spatial light modulator 35
- Optical multiplexer 40 lens 60, optical combiner 50, local light emitting device 51, beam combiner 52, lens array 53, optical fiber array 54, photoelectric converter 5 5 and a microwave signal output terminal 56.
- a lens 60 is placed between the spatial light modulator 35 and the optical fiber array 54, and the output surface of the spatial light modulator 35 is placed on the front focal plane of the lens 60, and the optical fiber array 54 or
- the entrance end face of 53 is set on the rear focal plane of the lens 60.
- the spatial light modulator 35 converts the intensity distribution of each signal light 11 and 21 into the intensity distribution of each antenna radiation beam constituting the multi-beam.
- the converted light 16 and 26 are transmitted through the lens 60 after the optical path is converted by the optical multiplexer 40 as in the first and second embodiments.
- FIG. 6 is a diagram showing a configuration of an optically controlled microwave phase forming device according to Embodiment 6 of the present invention.
- this device is composed of light sources 10 and 20, optical distributors 12 and 22, Number converters 13 and 23, microwave signal input terminals 14 and 24, photosynthesizer 46, signal light emission means 47, optical demultiplexer 49, spatial light modulator controller 3 1, a spatial light modulator 35, an optical multiplexer 40, a lens 60, a light combiner 50, a local light emitting device 51, a beam combiner 52, and a lens array 53 An optical fiber array 54, a photoelectric converter 55, and a microwave signal output terminal 56 are provided.
- the operation of the optically controlled microphone mouth wave phase forming device according to the sixth embodiment will be described with reference to the drawings.
- the light emitted from the light source 10 and the light source 20 is input to different regions of the spatial light modulator 35.
- the input signal light 11 and 21 are intensity-modulated by the spatial light modulator 35 with a distribution corresponding to the desired antenna radiation pattern and output, and operate in the same manner as in the fifth embodiment.
- FIG. 7 is a diagram showing a configuration of an optically controlled microwave phase forming device according to Embodiment 7 of the present invention.
- this device includes light sources 10 and 20, light splitters 12 and 22, optical frequency converters 13 and 23, microwave signal input terminals 14 and 24, and A light combiner 46, a signal light emitting device 47, an optical demultiplexer 49, a spatial light modulator 30, a spatial light modulator controller 31, 32, and an optical multiplexer 40, Optical synthesizer 50, oral light emitting device 51, beam combiner 52, lens array 53, optical fiber array 54, photoelectric converter 55, microwave signal output terminal 5 6 is provided.
- the operation of the light control type microphone mouth wave phase forming device according to the seventh embodiment will be described. This will be described with reference to the drawings.
- the branched light beams 18 and 28 emitted from the light sources 10 and 20 are combined by a light combiner 50 and emitted to space with a predetermined beam width by a lens (local light emitting device) 51.
- the emitted light is split by an optical splitter 49 into lights 19 and 29 having different optical paths depending on the wavelength, and is input to the input side of the spatial light modulator 30.
- the spatial intensity splitters of the output lights 19 and 29 are converted into predetermined intensity distributions and output from the spatial light modulator 30.
- the output light is converted into the same optical path by the optical multiplexer 40, and is input to the optical fiber array 54 via the beam combiner 52.
- the intensity modulation is performed on the branched lights 18 and 28.
- the spatial light modulator 35 is provided on the entrance side or the exit side of the spatial light modulator 30. Insertion and intensity modulation may be performed.
- Embodiment 9 Although each of the above embodiments uses two light sources and generates two multi-beams, three or more light sources can be used to realize three or more multi-beam forming circuits. Needless to say, Embodiment 10 In each of the embodiments described above, the configuration using the transmissive spatial light modulator 30 has been described.
- Embodiment 11 In each of the above embodiments, the frequency of the split light 11 from the light source 10 is converted, but the frequency of the other split light 18 may be shifted. Further, both the frequencies of the split light 11 and the split light 18 may be converted.
- Embodiment 12 In each of the embodiments described above, one light source and a frequency converter were used to form one microwave. However, two light sources were used, and the frequency difference between the two light sources was reduced. The wavelength of each light source may be controlled so as to have a desired microwave frequency.
- Embodiment 13 In each of the above embodiments, the light was sampled by the optical fiber array 54 and then transmitted to the photoelectric converter 55. However, the light was not passed through the optical fiber array 54 and the photoelectric converter 55 was not used. May be directly received by the array. Industrial potential
- the light control type microphone mouth wave phase forming device is applicable to a multi-beam forming circuit for array antennas, With the wave device, it is possible to convert light output from different regions on one spatial light modulator to the same optical path. Therefore, a single spatial light modulator can simultaneously form a plurality of microphone aperture wavefronts.
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- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
- Optical Communication System (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2003/008545 WO2005004324A1 (ja) | 2003-07-04 | 2003-07-04 | 光制御型マイクロ波位相形成装置 |
JP2005503387A JP4140734B2 (ja) | 2003-07-04 | 2003-07-04 | 光制御型マイクロ波位相形成装置 |
EP03738687A EP1643639B1 (en) | 2003-07-04 | 2003-07-04 | Optical control type microwave phase forming device |
US10/537,100 US20060056847A1 (en) | 2003-07-04 | 2003-07-04 | Optical control type microwave phase forming device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2003/008545 WO2005004324A1 (ja) | 2003-07-04 | 2003-07-04 | 光制御型マイクロ波位相形成装置 |
Publications (1)
Publication Number | Publication Date |
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WO2005004324A1 true WO2005004324A1 (ja) | 2005-01-13 |
Family
ID=33562090
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2003/008545 WO2005004324A1 (ja) | 2003-07-04 | 2003-07-04 | 光制御型マイクロ波位相形成装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20060056847A1 (ja) |
EP (1) | EP1643639B1 (ja) |
JP (1) | JP4140734B2 (ja) |
WO (1) | WO2005004324A1 (ja) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007147482A (ja) * | 2005-11-29 | 2007-06-14 | Mitsubishi Electric Corp | 電波到来方向測定装置 |
US7382983B2 (en) | 2003-05-29 | 2008-06-03 | Mitsubishi Electric Corporation | Optical control type phased array antenna |
JP2009017431A (ja) * | 2007-07-09 | 2009-01-22 | Mitsubishi Electric Corp | 光制御型フェーズドアレーアンテナ装置 |
JP2009212793A (ja) * | 2008-03-04 | 2009-09-17 | Mitsubishi Electric Corp | 光制御型フェーズドアレーアンテナ装置 |
JP2009239669A (ja) * | 2008-03-27 | 2009-10-15 | Mitsubishi Electric Corp | 光制御型フェーズドアレーアンテナ装置 |
JP2010028236A (ja) * | 2008-07-15 | 2010-02-04 | Mitsubishi Electric Corp | 光制御型マルチビームアンテナ装置 |
WO2023026462A1 (ja) * | 2021-08-27 | 2023-03-02 | 日本電気株式会社 | 送光装置および通信装置 |
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US9306371B2 (en) | 2011-07-18 | 2016-04-05 | Bae Systems Information And Electronic Systems Intergration Inc. | Frequency agile high power microwave generator |
CN103457659A (zh) * | 2013-08-22 | 2013-12-18 | 华中科技大学 | 一种适用于自由空间光通信的空分复用系统及方法 |
CN104618030B (zh) * | 2014-12-30 | 2017-04-26 | 浙江大学 | 一种用于轨道角动量模式解复用的部分接收方法 |
CN105785609B (zh) * | 2016-04-28 | 2023-04-07 | 长春理工大学 | 基于透射式液晶空间光调制器波前校正的方法及装置 |
RU2628121C1 (ru) * | 2016-10-11 | 2017-08-15 | Компания АМОТЕК ТЕКНОЛОДЖИ ОЮ, рег. N 14113251 | Способ построения широкодиапазонного преобразователя частоты радиосигналов и устройство для его осуществления |
US11233326B2 (en) * | 2020-04-01 | 2022-01-25 | Raytheon Company | Optical feed network using a free-space optical modulator for RF phased antenna arrays |
CN113972948A (zh) * | 2020-07-22 | 2022-01-25 | 华为技术有限公司 | 一种光发射装置、光通信系统以及光通信方法 |
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JPH09139620A (ja) * | 1995-11-15 | 1997-05-27 | Atr Kodenpa Tsushin Kenkyusho:Kk | 光制御型フェーズドアレーアンテナ |
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US4965603A (en) * | 1989-08-01 | 1990-10-23 | Rockwell International Corporation | Optical beamforming network for controlling an RF phased array |
US5187487A (en) * | 1992-03-05 | 1993-02-16 | General Electric Company | Compact wide tunable bandwidth phased array antenna controller |
US6038076A (en) * | 1997-12-03 | 2000-03-14 | Noran Instruments, Inc. | Wavelength selection, multiplexing and demultiplexing method and apparatus |
FR2800202B1 (fr) * | 1999-10-26 | 2007-08-31 | Thomson Csf | Dispositif de commande pour la formation de plusieurs faisceaux simultanes de reception radar a antenne a balayage electronique |
US7020396B2 (en) * | 2002-04-24 | 2006-03-28 | Hrl Laboratories, Llc | Opto-electronic ultra-wideband signal waveform generator and radiator |
JP2004013113A (ja) * | 2002-06-11 | 2004-01-15 | Sumitomo Electric Ind Ltd | 光信号処理器 |
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- 2003-07-04 WO PCT/JP2003/008545 patent/WO2005004324A1/ja active Application Filing
- 2003-07-04 EP EP03738687A patent/EP1643639B1/en not_active Expired - Lifetime
- 2003-07-04 US US10/537,100 patent/US20060056847A1/en not_active Abandoned
- 2003-07-04 JP JP2005503387A patent/JP4140734B2/ja not_active Expired - Fee Related
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JPH06276017A (ja) * | 1993-03-22 | 1994-09-30 | Nippon Telegr & Teleph Corp <Ntt> | アンテナ給電回路 |
JPH07202547A (ja) * | 1993-12-28 | 1995-08-04 | Nippon Telegr & Teleph Corp <Ntt> | アンテナビーム形成回路 |
JPH09139620A (ja) * | 1995-11-15 | 1997-05-27 | Atr Kodenpa Tsushin Kenkyusho:Kk | 光制御型フェーズドアレーアンテナ |
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7382983B2 (en) | 2003-05-29 | 2008-06-03 | Mitsubishi Electric Corporation | Optical control type phased array antenna |
JP2007147482A (ja) * | 2005-11-29 | 2007-06-14 | Mitsubishi Electric Corp | 電波到来方向測定装置 |
JP4566894B2 (ja) * | 2005-11-29 | 2010-10-20 | 三菱電機株式会社 | 電波到来方向測定装置 |
JP2009017431A (ja) * | 2007-07-09 | 2009-01-22 | Mitsubishi Electric Corp | 光制御型フェーズドアレーアンテナ装置 |
JP2009212793A (ja) * | 2008-03-04 | 2009-09-17 | Mitsubishi Electric Corp | 光制御型フェーズドアレーアンテナ装置 |
JP2009239669A (ja) * | 2008-03-27 | 2009-10-15 | Mitsubishi Electric Corp | 光制御型フェーズドアレーアンテナ装置 |
JP2010028236A (ja) * | 2008-07-15 | 2010-02-04 | Mitsubishi Electric Corp | 光制御型マルチビームアンテナ装置 |
WO2023026462A1 (ja) * | 2021-08-27 | 2023-03-02 | 日本電気株式会社 | 送光装置および通信装置 |
JP7559961B2 (ja) | 2021-08-27 | 2024-10-02 | 日本電気株式会社 | 送光装置および通信装置 |
Also Published As
Publication number | Publication date |
---|---|
EP1643639A4 (en) | 2007-08-08 |
US20060056847A1 (en) | 2006-03-16 |
EP1643639B1 (en) | 2009-02-18 |
EP1643639A1 (en) | 2006-04-05 |
JPWO2005004324A1 (ja) | 2006-08-17 |
JP4140734B2 (ja) | 2008-08-27 |
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