WO2007114522A1 - 無線ネットワークシステム - Google Patents
無線ネットワークシステム Download PDFInfo
- Publication number
- WO2007114522A1 WO2007114522A1 PCT/JP2007/057725 JP2007057725W WO2007114522A1 WO 2007114522 A1 WO2007114522 A1 WO 2007114522A1 JP 2007057725 W JP2007057725 W JP 2007057725W WO 2007114522 A1 WO2007114522 A1 WO 2007114522A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wireless communication
- signal
- network system
- wireless network
- frequency
- Prior art date
Links
Classifications
-
- 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
- H01Q3/44—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 electric or magnetic characteristics of reflecting, refracting, or diffracting devices associated with the radiating element
- H01Q3/46—Active lenses or reflecting arrays
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/08—Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/403—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency
- H04B1/408—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency the transmitter oscillator frequency being identical to the receiver local oscillator frequency
Definitions
- the present invention relates to a wireless network system that relays and transmits various signals with high quality.
- Wireless LANs and wireless video transmission systems using microwaves and millimeter waves have been developed as wireless communication systems for transmitting wideband digital signals such as video information with high quality. From the standpoints of monitoring and control in production facilities, crime prevention monitoring of facilities, and disaster prevention and safety monitoring in depopulated areas, the construction of sensor networks using radio is being studied.
- the transmitter side performs modulation processing at a frequency where signal processing is easy to perform, an intermediate frequency of several tens of MHz to several hundreds of MHz, and in some cases several GHz, and from a local oscillator For example, the frequency is converted (up-converted) to a transmission frequency in the 60 GHz band and radiated from the antenna via the feed line.
- the radio frequency signal from the receiving antenna is amplified, combined with the signal from the local oscillator, frequency-converted (down-compressed) to the intermediate frequency band, and then channel extraction and signal demodulation are performed. Do. This configuration works as the frequency increases. There are technical difficulties, and there are problems such as low efficiency of local oscillators that require stable and sufficiently large output, and low efficiency of radio equipment such as loss in frequency converters. This has hindered the practical use and spread of wireless networks.
- active antennas aiming at low cost by integrating antenna and radio frequency circuit are proposed, and a configuration of a radiation type oscillation device in which an amplifying element is integrated with an electromagnetic radiation structure has been proposed.
- the configuration of this radiating oscillator is extremely simple, and is expected to be applicable as a low-cost wireless network component.
- Wireless network configurations include Bluetooth, which is already in practical use, and a series of IEEE E802.11 wireless standards known under the name Wi-Fi.
- Wi-Fi Wi-Fi
- Zig Bee Zig Bee
- ZigBee Zig Bee
- ZigBee is a technology that complies with the I EEE 802.15.4 standard and is attractive as a short-range low-speed wireless link. It is a 2.4 GHz radio system.
- Patent Document 1 Japanese Patent Laid-Open No. 2 035-3 4 8 3 3 2
- Patent Document 2 Japanese Patent Laid-Open No. 2 0 3-1 9 8 2 59
- Patent Document 3 Japanese Patent Laid-Open No. 2 023-2 4 4 0 16 (hereinafter referred to as Patent Document 3), it is necessary when configuring a wireless communication network system including a use for relaying to other systems.
- Frequency re-conversion i.e., conversion to the intermediate transmission frequency through the conversion process to the intermediate frequency, but at this time, the phase noise and frequency stability of the local oscillator of the frequency conversion device are not sufficient.
- a technology for configuring a system by supplying a highly stable reference signal wirelessly is disclosed.
- Patent Document 4 Patent 3 1 4 6 2 60
- Patent Document 5 Patent 3 3 5 5 3 3 7
- Non-Patent Document 1 “RA Flynt, JA Navarro and K. Chang, 'Low Cost and Compact Active Integrated Antenna Transceiver for System Application / IEEE Trans. Microwave Theory Tech., Vol.44, pp.1642-1649, 1996
- Non-Patent Document 1 discloses an example of a radiating oscillator having a flat resonator structure. In Non-Patent Document 1, the radiating oscillator is opposed to radiate so that transmission and reception signals are polarized in orthogonal directions. Discloses a configuration of a bidirectional communication device in which a type oscillation device is arranged and operated as a receiver by a mixer diode for frequency conversion.
- Non-Patent Document 2 "CM. Montiel, L. Fan and K. Chang, ⁇ Self-Mixing Active Antenna for Communication and Vehicle Identification Applications, '1996 IEEE MTT-S Digest, TU4C pp.333-336, 1996"
- Gandiod is used as an oscillation element, and frequency modulation is generated by superimposing a high-frequency voltage on the Gandiod bias voltage.
- the same Gandiod oscillator is irradiated to cause injection locking, and at the same time the frequency modulation component Is transmitted to the other radiating oscillator, and by means of Gunn diode's own mixer operation, bi-directional transmission and reception are impossible at the same time, but a technology that can communicate high-frequency signal components is disclosed.
- the present invention has been made to solve the above problems, and uses a very simple configuration as a configuration of a basic wireless communication device, and has a low cost, low power consumption, and high signal quality.
- the object is to provide a radio network system in the ultra-high frequency band to millimeter wave band suitable for the configuration. Disclosure of the invention
- the present invention is as follows.
- a wireless network system that relays and transmits various signals to each other, the function of an antenna that integrates transistors to generate negative resistance in an ultrahigh-frequency oscillation resonator and emits electromagnetic waves into space
- a radio oscillation device configured to share a radio frequency signal, an intermediate frequency signal generation unit that outputs an intermediate frequency signal to the radiation oscillation device, and a reception signal detection unit that receives a transmitted signal.
- the received signal detector has a function to distinguish and receive a different frequency band from others, and the signal transmitted by one wireless communication device is It is transmitted to the other wireless communication device that is opposed, and the other wireless communication device that is opposed is received and extracted by the reception signal detection unit.
- each of the plurality of wireless communication devices has one or more directional beams.
- each of the intermediate frequency signal generation units and each reception signal detection unit of the plurality of wireless communication devices share the same frequency band.
- each of the intermediate frequency signal generators of the plurality of wireless communication devices has a function of superposing a unique address signal. It is characterized in that it is possible to identify which radio communication device the signal is transmitted from.
- each of the intermediate frequency signal generation units of the plurality of wireless communication devices includes various sensors or other sensor networks. It has the function of connecting to the signal from and transferring the acquired data.
- the wireless network system is connected to another wired or wireless communication network and is integrated and managed.
- the radiating oscillators provided in each of the plurality of radio communication apparatuses are synchronized with each other in the operating state, and a signal from the intermediate frequency signal generator is input to the one radiating oscillator.
- the signal is frequency-converted (up-converted) in the radiation-type oscillation device, transmitted as a side wave in the radio transmission frequency band, and shared as a radio network.
- the frequency is converted (down-compressed) and received.
- signals of different intermediate frequencies sent by other radiation-type oscillators are similarly frequency-converted (up-converted) and sent out as side waves at different frequency positions in the radio transmission frequency band.
- the signal is received by a radiating oscillator having a received signal detector in a frequency band corresponding to the frequency.
- the local oscillation frequency in the frequency conversion is synchronized. Therefore, there is no influence of phase noise and frequency drift, and extremely good bidirectional transmission is ensured.
- a planar radiating oscillator configured to have a negative resistance oscillation condition for a transistor can be expected to be 20 to 30 times more efficient than using a Gunn diode, resulting in low power consumption. Therefore, operation with a battery is possible, and a wireless communication device can be provided as a low-cost component. Therefore, the practical application of a wireless network system can be expected.
- the output beam can be formed into a single-sided, bi-directional, and multi-beam type, and combined to create a layout of the radiating oscillator.
- the network configuration is flexible, and it is highly practical for the formation of wireless links under complicated installation conditions such as many sensor networks, security networks, and communication control networks, and can be provided as an applied technology in various fields.
- the formation of a millimeter-wave band wireless network using modules with highly directional beams avoids interference problems with other wireless systems and is effective in terms of effective use of frequency resources suitable for frequency coexistence.
- the radiating oscillators in which the intermediate frequency signal generating unit and the received signal detecting unit connected to the radiating oscillators constituting the wireless network system share the same frequency band, from any of the radiating oscillators, Signals can also be shared with each other and can be used effectively according to the functional purpose of the wireless network system.
- the frequency stability of the radio network system according to the present invention can be maintained within technically required conditions, and frequency stabilization is maintained even when a specific radio link is interrupted. Configuration is ensured.
- the address of each radiating type oscillation device is recorded, so that the wireless network of the present invention is used. From which part of the network system the signal information can be easily identified.
- the wireless network system of the present invention can exhibit more various functions by being connected to each other and to other types of networks.
- a network system in which a plurality of wireless network configurations according to the present invention are bundled and connected to a wired or other wireless communication network to be integrated and managed as an upper system is possible.
- FIG. 1 is a block diagram showing the principle of the wireless network system of the present invention.
- FIG. 2 is an explanatory diagram relating to a radiation type oscillation device having one or more directional beams, which is a component of the wireless network system of the present invention.
- FIG. 3 is a diagram showing a configuration example of the wireless network system of the present invention.
- FIG. 4 is a specific example of a basic circuit of a wireless communication apparatus constituting the wireless network system of the present invention.
- the HF radiation signal when an AM signal is generated is shown.
- Fig. 6 shows two radio communication devices with the circuit shown in Fig. 4 prepared so that they face each other.
- the signal of Fig. 5 radiated from one radio communication device is received by the other radio communication device, Shows the received IF signal when it is compared.
- FIG. 1 is a block diagram showing the principle of the wireless network system of the present invention.
- This invention is a wireless network system that relays and transmits various signals to each other.
- a transistor is provided so as to generate a negative resistance in an ultrahigh-frequency oscillation resonator.
- An antenna that integrates and radiates electromagnetic waves into the space 1 1 A radiation oscillator 1 that is configured to share the function of the antenna 1, an intermediate frequency signal generator 4 that outputs an intermediate frequency signal to the radiation oscillator 1, and a transmission
- a plurality of wireless communication devices 101 having a received signal detector 7 for receiving the received signals, and the plurality of wireless communication devices 1 0 1, 1 0 2, 1 0 3 are drawn into each other At least one of the plurality of wireless communication devices 1 0 1, 1 0 2 .1 0 3 has a frequency band signal generation function different from the others, Also, the received signal detector is at a different frequency The has a discrimination received may function, one wireless communication device
- the signal transmitted by 1 0 1 is transmitted to the other radio communication devices 1 0 2 and 1 0 3 facing each other, and the other radio communication devices 1 0 2 and 1 0 3 facing the 1 Received at 9 and taken out.
- the radiating oscillator 1 is provided with a transistor connected to a resonance structure that also serves as an antenna 11, and the transistor has a DC bias voltage supplied from a DC bias power supply 10. It is configured to generate negative resistance.
- the energy supplied from the DC bias power supply 10 is converted into high-frequency oscillation energy by the radiating oscillator 1 and radiated from the antenna 11 to the space.
- the radiating oscillators 2 and 3 in FIG. 1 (a) are basically the same as the radiating oscillator 1, but the notation regarding the DC bias power supply 10 is omitted.
- Radiation type oscillating devices provided in wireless communication devices 1 0 1, 1 0 2 and 1 0 3 respectively
- the devices 1, 2 and 3 are arranged so as to face each other, and the radiation type oscillation device has a common frequency f due to the pull-in phenomenon of the oscillation frequency. Oscillates and becomes phase synchronized.
- the signal frequency bands of the intermediate frequency signal generators 4, 5, and 6 connected to the radiating oscillators 1, 2, and 3 are f 2 and f 3 respectively, and the received signal detectors are in different frequency bands.
- the signal transmitted from one radiating oscillator can be transmitted to another opposing oscillating apparatus and taken out by the received signal detector.
- Figure 1 (b) shows the frequency spectrum when there is no input from the intermediate frequency signal generator.
- FIG. 1 (c) shows the frequency spectrum shared by the wireless network when there is no signal.
- the signal frequency bands from the radiating oscillator 1 and the radiating oscillator 2 can be discriminated, distinguished from each other, and received.
- FIG. 2 is an explanatory diagram relating to a configuration in which a radiation type oscillation device which is a component of the wireless network system of the present invention has one or more directional beams.
- FIG. 2 (a) shows the configuration of a radiation type oscillator 12 having a radiation pattern in one direction.
- the radiating oscillator 1 2 uses an antenna 1 2 1 having an ordinary planar antenna structure, thereby providing a wide-angle radiation pattern 2 with low directivity!
- the electromagnetic wave is emitted.
- the radiating oscillator 12 can radiate an electromagnetic wave having a radiation pattern DW 1 2 1 having a higher directivity gain by using an additional means such as a lens or a horn.
- FIG. 2 (b) is a conceptual diagram of a radiating oscillator 1 3 with bidirectional radiation characteristics. It is a normal sput type resonator (antenna 1 3 1 and 1 3 1). Etc., the bidirectional radiation pattern w 131 can be easily realized.
- the radiation pattern W 131 can increase the directivity gain like the radiation pattern DW 131 by configuring the radiation-type oscillation device 12 using the additional means.
- Fig. 2 (c), (d), and (e) show the configurations of the radiation oscillators 14, 15, and 16 that radiate electromagnetic waves having a multi-beam pattern.
- the radiating oscillation device 14 in Fig. 2 (c) combines the antenna part that determines the radiation pattern with an additional structure, or deforms the antenna part, so that the antenna 141 can be mounted in two directions at a predetermined angle.
- the wireless device includes a radiation type oscillation device that realizes a configuration for emitting electromagnetic waves of a radiation pattern DW 141 having high directivity gain in two predetermined directions.
- Fig. 2 (d) shows three directions by adding a different modification to Fig.
- a radio communication device having a radiation pattern DW 151 having a directional gain in three predetermined directions as if the antenna 151 is mounted in three directions at a predetermined angle. Represents the device.
- the radiating oscillator with the two-directional beam radiation pattern shown in Fig. 2 (c) as a double-sided radiation type, a radio device with four-directional beam radiation characteristics shown in Fig. 2 (e) can be obtained. realizable.
- the radiating oscillator 16 is a wireless device having a highly directional radiation pattern DW 161 in four predetermined directions, and electromagnetic waves are radiated in each direction and interact with the wireless communication devices in each direction.
- a wireless link can be formed.
- the above-mentioned radiating oscillators 14, 15 and 16 can all be realized by utilizing the characteristics generated by the multiple arrangements of slot structures and patch structures used in antenna technology. wear.
- the radiation patterns in FIGS. 2 (a) to (e) exemplify the concept of the radiation pattern of the electromagnetic wave of the radiation oscillator as a component of the wireless network system according to the present invention.
- FIG. 3 is a diagram showing a configuration example of the wireless network system of the present invention.
- the wireless communication devices 1 2 0 to 1 60 constituting the wireless network system of FIG. 3 are configured by the radiation type oscillation devices 1 2 to 16 shown in FIGS. 2 (a) to (e). .
- the wireless communication devices 120-160 have basically the same configuration as the wireless communication device 101 in FIG. 1 (a), except that an intermediate frequency signal generator, a received signal detector, and The notation in the figure regarding the DC bias power supply is omitted for convenience.
- the wireless network system of FIG. 3 shows an example of the arrangement when the frequency stabilization function is applied by the frequency stabilization means S in order to maintain the frequency stability within the conditions required by the technical standards.
- the frequency f is common to the radiation type oscillation devices 12 to 16 constituting the wireless communication devices 120 to 160. Oscillates and is phase synchronized.
- Intermediate frequency band signal f 1 2 ⁇ f 1 6 in this state is Appuko Nbato, another wireless communication apparatus, when having the same intermediate frequency band, taken out by the reception signal detecting unit.
- the frequency stabilization means is necessary for the radiating oscillators 12 to 16 to ensure the frequency stability within the allowable range as a wireless device by the frequency stabilization means S.
- Maintain frequency stabilization by connecting frequency stabilization means S to at least one of the wireless communication devices that make up the wireless network system.
- the frequency stabilizing means S in a plurality of radiation type oscillation devices, when the wireless network system is partially blocked by an accident or the like, for example, the wireless communication device 1 2 0
- the wireless communication device constituting the wireless network system of the present invention is highly efficient and can be operated with a low power supply of several + mW or less. Therefore, instead of a DC bias power supply, power transmission using a microphone mouth wave, a power generation system such as a solar cell or an energy conversion system, and a small and light power supply means such as a small battery such as a lithium battery or a hydrogen battery.
- the wireless network system of the present invention can be configured to operate continuously by supplying a minute power of 10 mW to 2 O mW to each wireless communication device using the. This is effective for wireless devices installed in places where power supply is difficult.
- the address is written in the radiating oscillation device constituting the wireless network system, so that it is possible to easily identify the signal information from which part of the wireless network system of the present invention.
- FIG. 4 is a specific example of a basic circuit of a wireless communication apparatus constituting the wireless network system of the present invention.
- Connection conductor patch 1 O la to the gate of the transistor 1 a Conductor patch 101 b and drain voltage supply choke circuit 10 a are connected to the drain, and IF choke circuit 10 b is connected in series between RF choke circuit 10 a and DC bias power supply 10 .
- the source is grounded via an impedance line 101c that satisfies the oscillation condition.
- the received signal detector 7 and the intermediate frequency signal generator 4 are connected to a connection point 10c between the RF choke circuit 10a and the IF choke circuit 10b through a diplexer 1b for discriminating between the transmitted IF signal and the received IF signal. It is connected.
- This radiated signal was measured with a spectrum analyzer.
- the IF signal is up-compressed by mixing by the radiating oscillator itself with the oscillating frequency of the radiating oscillator as the local signal frequency, and converted into an RF radiated signal. Therefore, the oscillation frequency f of the radiation type oscillator.
- F. One f IF and f. + f 1 F frequency component is generated.
- 8.3505GHz corresponds to the peak of sine modulation wave
- 8.3465GHz corresponds to the valley of sine modulation wave.
- two wireless communication devices having the circuit shown in FIG. 4 are prepared and face each other.
- the signal of FIG. 5 radiated from one wireless communication device is received by the other wireless communication device, and the Figure 6 shows the received IF signal after the first set.
- This received IF signal is detected by the received signal detector 7.
- the IF signal in this example is an AM signal, it operates in the same way with FM modulation, and there is no particular limitation on the modulation method. Industrial applicability
- the local oscillation frequency in the frequency conversion is synchronized in the wireless network system of the present invention, there is no influence of phase noise and frequency drift, and extremely good bidirectional transmission is ensured. Suitable for millimeter wave wireless communication.
- the wireless network system of the present invention can be configured using an extremely simple configuration as the configuration of the basic wireless communication device, it is low cost and low power consumption.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008508727A JP4586186B2 (ja) | 2006-03-31 | 2007-03-30 | 無線ネットワークシステム |
US12/295,434 US8160492B2 (en) | 2006-03-31 | 2007-03-30 | Wireless network system |
CN2007800173672A CN101444008B (zh) | 2006-03-31 | 2007-03-30 | 无线网络系统 |
EP07741161.9A EP2003787B1 (en) | 2006-03-31 | 2007-03-30 | Wireless network system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006-101016 | 2006-03-31 | ||
JP2006101016 | 2006-03-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007114522A1 true WO2007114522A1 (ja) | 2007-10-11 |
Family
ID=38563780
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/057725 WO2007114522A1 (ja) | 2006-03-31 | 2007-03-30 | 無線ネットワークシステム |
Country Status (5)
Country | Link |
---|---|
US (1) | US8160492B2 (ja) |
EP (1) | EP2003787B1 (ja) |
JP (1) | JP4586186B2 (ja) |
CN (1) | CN101444008B (ja) |
WO (1) | WO2007114522A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009041736A1 (ja) * | 2007-09-28 | 2009-04-02 | National Institute Of Information And Communications Technology | 無線通信ネットワークシステム |
WO2010035349A1 (ja) * | 2008-09-26 | 2010-04-01 | 独立行政法人情報通信研究機構 | マイクロ波・ミり波通信装置 |
WO2010041753A1 (ja) * | 2008-10-08 | 2010-04-15 | 独立行政法人情報通信研究機構 | パルス無線通信装置 |
JP2019195189A (ja) * | 2013-02-12 | 2019-11-07 | 日本テキサス・インスツルメンツ合同会社 | Lteにおける4txコードブックエンハンスメント |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8212718B2 (en) | 2007-04-02 | 2012-07-03 | National Institute Of Information And Communications Technology | Microwave/millimeter wave sensor apparatus |
JP5761585B2 (ja) * | 2008-10-07 | 2015-08-12 | 国立研究開発法人情報通信研究機構 | パルスレーダ装置 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1131918A (ja) * | 1997-07-11 | 1999-02-02 | Yuseisho Tsushin Sogo Kenkyusho | マイクロ波ミリ波放射型発振装置 |
JP2000261234A (ja) * | 1999-03-05 | 2000-09-22 | Communication Research Laboratory Mpt | 平面放射型発振装置 |
JP2001251138A (ja) * | 2000-03-06 | 2001-09-14 | Communications Research Laboratory Mphpt | 平面構造放射型発振装置 |
JP2003198259A (ja) | 2001-12-27 | 2003-07-11 | Sharp Corp | 自己ヘテロダインダウンコンバータ回路およびそれを含むミリ波映像伝送システム、並びにヘテロ接合バイポーラトランスファードエレクトロンデバイス |
JP2003244016A (ja) | 2002-02-18 | 2003-08-29 | Communication Research Laboratory | 複数の無線通信端末間で通信を行う無線通信方法及びシステム |
JP2005348332A (ja) | 2004-06-07 | 2005-12-15 | Yagi Antenna Co Ltd | 無線通信システム |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2152333B (en) * | 1983-12-27 | 1988-02-03 | United Technologies Corp | Full-duplex, electrically switched microwave transceiver |
US7167686B2 (en) * | 2002-01-25 | 2007-01-23 | Qualcomm Incorporated | Wireless communications transceiver: transmitter using a harmonic rejection mixer and an RF output offset phase-locked loop in a two-step up-conversion architecture and receiver using direct conversion architecture |
GB2412513B (en) * | 2002-05-31 | 2006-03-08 | Renesas Tech Corp | Apparatus for radio telecommunication system and method of building up output power |
US7158814B2 (en) * | 2004-06-10 | 2007-01-02 | Interdigital Technology Corporation | Method and system for utilizing smart antennas establishing a backhaul network |
-
2007
- 2007-03-30 EP EP07741161.9A patent/EP2003787B1/en active Active
- 2007-03-30 US US12/295,434 patent/US8160492B2/en active Active
- 2007-03-30 CN CN2007800173672A patent/CN101444008B/zh not_active Expired - Fee Related
- 2007-03-30 WO PCT/JP2007/057725 patent/WO2007114522A1/ja active Application Filing
- 2007-03-30 JP JP2008508727A patent/JP4586186B2/ja not_active Expired - Fee Related
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1131918A (ja) * | 1997-07-11 | 1999-02-02 | Yuseisho Tsushin Sogo Kenkyusho | マイクロ波ミリ波放射型発振装置 |
JP2000261234A (ja) * | 1999-03-05 | 2000-09-22 | Communication Research Laboratory Mpt | 平面放射型発振装置 |
JP3146260B2 (ja) | 1999-03-05 | 2001-03-12 | 郵政省通信総合研究所長 | 平面放射型発振装置 |
JP2001251138A (ja) * | 2000-03-06 | 2001-09-14 | Communications Research Laboratory Mphpt | 平面構造放射型発振装置 |
JP3355337B2 (ja) | 2000-03-06 | 2002-12-09 | 独立行政法人通信総合研究所 | 平面構造放射型発振装置 |
JP2003198259A (ja) | 2001-12-27 | 2003-07-11 | Sharp Corp | 自己ヘテロダインダウンコンバータ回路およびそれを含むミリ波映像伝送システム、並びにヘテロ接合バイポーラトランスファードエレクトロンデバイス |
JP2003244016A (ja) | 2002-02-18 | 2003-08-29 | Communication Research Laboratory | 複数の無線通信端末間で通信を行う無線通信方法及びシステム |
JP2005348332A (ja) | 2004-06-07 | 2005-12-15 | Yagi Antenna Co Ltd | 無線通信システム |
Non-Patent Citations (3)
Title |
---|
C.M. MONTIEL; L. FAN; K. CHANG: "A Self-Mixing Active Antenna for Communication and Vehicle Identification Applications", 1996IEEE MTT-S DIGEST, TU4C, 1996, pages 333 - 336 |
R.A. FLYNT; J.A. NAVARRO; K. CHANG: "Low Cost and Compact Active Integrated Antenna Transceiver for System Application", IEEE TRANS. MICROWAVE THEORY TECH., vol. 44, 1996, pages 1642 - 1649 |
See also references of EP2003787A4 * |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009041736A1 (ja) * | 2007-09-28 | 2009-04-02 | National Institute Of Information And Communications Technology | 無線通信ネットワークシステム |
JP2009088834A (ja) * | 2007-09-28 | 2009-04-23 | National Institute Of Information & Communication Technology | 無線通信ネットワークシステム |
US8411613B2 (en) | 2007-09-28 | 2013-04-02 | National Institute Of Information And Communications Technology | Wireless communication network system |
WO2010035349A1 (ja) * | 2008-09-26 | 2010-04-01 | 独立行政法人情報通信研究機構 | マイクロ波・ミり波通信装置 |
US8380140B2 (en) | 2008-09-26 | 2013-02-19 | National Institute Of Information And Communications Technology | Microwave/millimeter wave communication apparatus |
WO2010041753A1 (ja) * | 2008-10-08 | 2010-04-15 | 独立行政法人情報通信研究機構 | パルス無線通信装置 |
JP2010093547A (ja) * | 2008-10-08 | 2010-04-22 | National Institute Of Information & Communication Technology | パルス無線通信装置 |
CN102210059A (zh) * | 2008-10-08 | 2011-10-05 | 独立行政法人情报通信研究机构 | 脉冲无线通信装置 |
US8705652B2 (en) | 2008-10-08 | 2014-04-22 | National Institute Of Information And Communications Technology | Pulse wireless communication device |
CN102210059B (zh) * | 2008-10-08 | 2014-07-02 | 独立行政法人情报通信研究机构 | 脉冲无线通信装置 |
JP2019195189A (ja) * | 2013-02-12 | 2019-11-07 | 日本テキサス・インスツルメンツ合同会社 | Lteにおける4txコードブックエンハンスメント |
Also Published As
Publication number | Publication date |
---|---|
EP2003787B1 (en) | 2013-11-20 |
EP2003787A2 (en) | 2008-12-17 |
JP4586186B2 (ja) | 2010-11-24 |
JPWO2007114522A1 (ja) | 2009-08-20 |
US20090253370A1 (en) | 2009-10-08 |
US8160492B2 (en) | 2012-04-17 |
CN101444008A (zh) | 2009-05-27 |
EP2003787A9 (en) | 2009-05-20 |
CN101444008B (zh) | 2012-06-27 |
EP2003787A4 (en) | 2012-10-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5099493B2 (ja) | 無線通信ネットワークシステム | |
KR101043664B1 (ko) | 위상 어레이 레이더 시스템들 및 이들의 서브 어셈블리들 | |
CN102017299B (zh) | 反向天线系统 | |
JP4586186B2 (ja) | 無線ネットワークシステム | |
US20090305628A1 (en) | Method of obtaining single wire transmission line | |
US10690761B2 (en) | Radio frequency device, system comprising radio frequency device, and corresponding methods | |
KR102102245B1 (ko) | 개별신호발생기를 이용한 무선 전력 송신 장치 및 방법 | |
US8478212B2 (en) | Apparatus and method for wirelessly transmitting and receiving energy and data | |
KR20130134843A (ko) | 다중 송수신 레이더 시스템 | |
CN101479884A (zh) | 接收机装置和发射机装置 | |
Varshney et al. | Judo: addressing the energy asymmetry of wireless embedded systems through tunnel diode based wireless transmitters | |
JP2017055596A (ja) | 非接触電力伝送装置及び非接触電力伝送方法 | |
JP2010273283A (ja) | 送受信装置 | |
US10867137B2 (en) | Passive sensor system powered by wireless energy transmission | |
US7545314B2 (en) | UWB signal transmitter for radars and sensors | |
US8781524B2 (en) | Wireless communication device | |
JP2022520008A (ja) | 二偏波ミリメートル波フロントエンド集積回路 | |
US20200235762A1 (en) | Reconfigurable wireless converter | |
KR100700311B1 (ko) | 무선 통신 방법 및 시스템 | |
Burasa et al. | Towards Future Deeply Integrated Multifunction Millimeter-Wave and Terahertz Systems-On-Chip | |
KR100418251B1 (ko) | 전파탐지장치(beacon) | |
JPH0993636A (ja) | 無線選択呼出装置と無線選択呼出システム及びデータ転送システム | |
KR20190090599A (ko) | 32개의 다수의 rf 송수신 모듈이 적용된 단일 스택의 초소형 rf 송신 모듈 | |
SK5448Y1 (en) | Device for synchronous terrestrial transmission FM broadcasting | |
JP2014137347A (ja) | 無線通信装置および無線通信方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 07741161 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2008508727 Country of ref document: JP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2007741161 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 200780017367.2 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 12295434 Country of ref document: US |