153 results about "Extremely high frequency" patented technology

In order to increase the transmission speed in a wireless network comprising at least a node, the method comprises the following steps:transmission by the node over at least one first physical channel of at least one request to send,reception by the node of at least one agreement to send data over at least one second physical channel using at least one frequency band belonging to the extremely high frequencies, and the first and second physical channels being different,data transmission after reception.

Apparatus and methods for rack level pre-installed interconnect for enabling cableless server, storage, and networking deployment. Plastic cable waveguides are configured to couple millimeter-wave radio frequency (RF) signals between two or more Extremely High Frequency (EHF) transceiver chips, thus supporting millimeter-wave wireless communication links enabling components in the separate chassis to communicate without requiring wire or optical cables between the chassis. Various configurations are disclosed, including multiple configurations for server chassis, storage chassis and arrays, and network / switch chassis. A plurality of plastic cable waveguide may be coupled to applicable support / mounting members, which in turn are mounted to a rack and / or top-of-rack switches. This enables the plastic cable waveguides to be pre-installed at the rack level, and further enables racks to be installed and replaced without requiring further cabling for the supported communication links. The communication links support link bandwidths of up to 6 gigabits per second, and may be aggregated to facilitate multi-lane links.

A first electronic device may include a first electronic circuit and a second electronic circuit is provided. The first electronic device may include an internal communication link providing a signal path for conducting communication signals between the first electronic circuit and the second electronic circuit. An interface circuit may be operatively coupled to the internal communication link. The interface circuit may include an extremely high frequency (EHF) communications circuit configured to receive an EHF electromagnetic signal from another EHF communications circuit of a second electronic device. This EHF electromagnetic signal may enable the second electronic device to control or monitor the first electronic device.

Apparatus and methods for cableless connection of components within chassis and between separate chassis. Pairs of Extremely High Frequency (EHF) transceiver chips supporting very short length millimeter-wave wireless communication links are configured to pass radio frequency signals through holes in one or more metal layers in separate chassis and / or frames, enabling components in the separate chassis to communicate without requiring cables between the chassis. Various configurations are disclosed, including multiple configurations for server chassis, storage chassis and arrays, and network / switch chassis. The EHF-based wireless links support link bandwidths of up to 6 gigabits per second, and may be aggregated to facilitate multi-lane links.

A method for handover of a terminal using a multi-connection in a cellular communication system is disclosed. The method for handover according to the present invention includes a multi-connection setting procedure of setting a connection to a second base station in addition to a connection to a first base station according to movement of a terminal in a direction from the first base station to the second base station, and a connection release procedure of releasing the connection to the first base station. Specifically, the present invention may be applied in a multi-beam management environment of super high frequency (SHF) and extremely high frequency (EHF) bandwidths, and may obtain an effect of decreasing signaling overhead and process latency of a conventional handover method.

A test fixture has a flexible plastic cable that acts as a waveguide. The Device-Under-Test (DUT) is a small transceiver and antenna that operate in the Extremely High-Frequency (EHF) band of 30-300 GHz. The size of the DUT transceiver is very small, limiting the power of emitted electromagnetic radiation so that close-proximity communication is used. The envelope for reception may only extend for about a centimeter from the DUT transceiver, about the same size as the test socket. A slot is formed in the test socket very near to the antenna. The slot receives one end of the plastic waveguide. The slot extends into the envelope by the DUT transceiver so that close-proximity radiation is captured by the plastic waveguide. The waveguide has a high relative permittivity and reflective metalized walls so that the radiation may be carried to a receiver that is outside the envelope.

Certain aspects of the present disclosure relate to location reporting for extremely high frequency (EHF) devices. Certain aspects of the present disclosure provide an apparatus for wireless communications. The apparatus generally includes a transmit interface configured to output a first frame for transmission to another apparatus at a first time, a receive interface configured to obtain, at a second time, a second frame transmitted by the other apparatus in response to the first frame, and a processing system configured to generate a third frame for transmission to the other apparatus via the transmit interface, the third frame including information indicating a difference between the first time and the second time and an indication of at least one of an angle of departure of the first frame or an angle of arrival of the second frame.

Methods and systems for a programmable LO generator utilizing a DDFS for extremely high frequencies are disclosed. Aspects of one method may include generating a first signal and a second signal using a base signal. The DDFS may generate the first signal, where the base signal may be divided down to provide a reference clock for the DDFS. The base signal may be divided to a lower frequency to generate the second signal. The first and second signals may be mixed to generate a third signal, which may be, for example, bandpass filtered to generate a local oscillator signal. Accordingly, the local oscillator signal, which may comprise I and Q components, may range to EHS band frequencies.

The invention discloses a frequency octupling millimeter wave generation device by means of a double polarization-quadrature phase shift keying (DP-QPSK) modulator and a method thereof, relates to the technical fields of microwave and optical communication, and is mainly applied to generation of high-frequency millimeter wave. According to the method shown in the appended drawings, the device comprises a light source, a radio frequency signal source, the DP-QPSK modulator, a phase shifter, a power divider, a polarization controller, a polarizer and a photoelectric detector. The nonlinear characteristics and the interference superposition characteristics of the two sub-modulators X-QPSK and Y-QPSK of the DP-QPSK modulator are utilized, and polarization controller is properly adjusted when the two sub-modulators XI and XQ of X-QPSK and a main modulator work at the maximum point so that frequency octupling millimeter wave signals can be generated, the radio frequency index required by generation of high-frequency / extremely-high-frequency signals can be greatly reduced and thus system cost can be reduced. Use of a filter is avoided by the method, and frequency adjustment performance is great. Meanwhile, the generated signals are great in phase noise and frequency spectrum purity.

The invention discloses a device and method for generating eight frequency multiplication millimeter waves by utilizing a Mach-Zehnder modulator, and the device and method are mainly used for the generation of the optical millimeter waves in a radio over fiber (ROF) access network. The method is shown in attached figures: optical millimeter wave signals, the frequency of which is eight times as large as that of local oscillator signals, are generated by utilizing nonlinear characteristics and interference superposition characteristics of two parallelly-connected double-parallel lithium niobate Mach-Zehnder modulators (DPMZM) and under the condition of an appropriate DC bias voltage, thereby greatly reducing equipment frequency index required for generating high frequency / extremely high frequency signals, and reducing the system cost. According to the device and method, specific phase modulation index is not needed, and radio-frequency signals can be flexibly adjusted, so that the requirement for radio-frequency power is lowered; and meanwhile, stray sideband can be well restrained.

Methods and systems for a quadrature local oscillator generator utilizing a DDFS for extremely high frequencies. Aspects of one method may include utilizing the DDFS to generate a first signal that may comprise an in-phase (I) component and a quadrature phase (Q) component. A base signal may be divided to generate a second signal with an in-phase (I) component and a quadrature phase (Q) component. The I and Q components of the first and second signals may be mixed by a plurality of mixers, and the outputs of the mixers may be combined to generate an in-phase component of a local oscillator signal and a quadrature phase component of the local oscillator signal. The frequency of the local oscillator signal may be controlled by inverting or not inverting outputs of one or more of the mixers.

The invention relates to a learning by imitation dialogue generation method based on generative adversarial networks. The method comprises the following steps: 1) building a dialogue statement expertcorpus; 2) building the generative adversarial network, wherein a generator in the generative adversarial network comprises a pair of encoder and decoder; 3) building a false corpus; 4) performing first classification training for a discriminator; 5) inputting an input statement into the generator, and training the encoder and the decoder in the generator through a reinforcement learning architecture; 6) adding an output statement generated in the step 5) into the false corpus, and continuing training the discriminator; 7) alternatively performing training of the generator and training of thediscriminator through a training mode of the generative adversarial network, until that the generator and the discriminator both are converged. Compared with the prior art, the method provided by theinvention can generate the statements more similar as that of human and avoid emergence of too much general answers, and can promote training effects of a dialogue generation model and solve a problemof extremely high frequency of the general answers.

Extremely High Frequency (EHF) distributed antenna systems and related components and methods are disclosed. In one embodiment, a base unit for distributing EHF modulated data signals to a RAU(s) is provided. The base unit includes a downlink data source input configured to receive downlink electrical data signal(s) from a data source. The base unit also includes an E-O converter configured to convert downlink electrical data signal(s) into downlink optical data signal(s). The base unit also includes an oscillator configured to generate an electrical carrier signal at a center frequency in the EHF band. The base unit also includes a modulator configured to combine the downlink optical data signal(s) with the electrical carrier signal to form downlink modulated optical signal(s) comprising a downlink optical data signal(s) modulated at the center frequency of the electrical carrier signal. The modulator is further configured to send the downlink modulated optical signal to the RAU(s).

A computing device includes an integrated unit having a plurality of functional components, and an extremely high frequency (EHF) communication unit operatively coupled to the integrated unit. The EHF communication unit includes a transducer configured to transmit and receive EHF electromagnetic signals, and convert between electrical signals and electromagnetic signals. The computing device includes a transceiver operatively coupled to the transducer. The EHF communication unit may enable at least one of the functional components of the computing device to be supplemented by a functional component of an external computing device.

Water contained in exhaust gas discharged from a fuel cell stack 22 is separated by a gas-liquid separator 48 and is accumulated in a recovery tank 54. The procedure of the invention sets a release amount of water and selects one or multiple positions for water release, based on the driving conditions including the vehicle speed and the acceleration, the turning state, activation or non-activation of skid reduction control, the distance from any object detected by clearance sonars 94a through 94d, a distance from a subsequent vehicle measured by an extremely high frequency radar 92, and the presence of raindrops detected by a raindrop detection sensor, and releases the water accumulated in the recovery tank 54 from water outlets at the selected one or multiple positions among water outlets 58a through 58f at multiple different locations. This arrangement ensures adequate release of the water produced by the fuel cell stack 22 to the atmosphere.

A communication device employs a contactless secure communication interface to transmit and receive data with a computing device using close proximity extremely high frequency (EHF) communication. The communication device and the computing device periodically initiate a discovery operation mode, whereby the devices periodically transmit identifying information about the respective devices and listen for identifying information from the other device. Upon completion of the discovery mode operation, the devices enter a link-training operation mode and exchange capability information about the respective devices. During transport mode operation the communication device employs methods to manage access to data stored on the communication device by encrypting the data using one or a combination of training information or capability information as a basis for generating an encryption key.

Provided is a system and method for configuring a multi-hierarchical cell in which a large-scale mobile backhaul technology and a small cell technology are combined. A mobile backhaul may increase a transmission capacity of a wireless backhaul using a super high frequency (SHF) / extremely high frequency (EHF) band, rather than a cellular band having a limitation in extending frequency resources, and a small group cell to be formed at a final end of the mobile backhaul may be configured by fixed group cells or mobile group cells depending on a radio environment, using a moving relay, wireless fidelity (WiFi), femto-cells, and the like, whereby cells may be miniaturized effectively, and a relatively great capacity of a wireless system may be provided to a subscriber.

The invention provides a multi-band communication system comprising extremely high frequencies. The core of the invention is: communicating through multi-band, communicaltion switching between m1-mL frequency band groups and lower f1-fN frequency band groups, using LOS / NLOS identification as a standard to select frequency band, exerting advantages of two bands, avoiding defects thereof, getting well complementation.

An ergonomically equipped and interference signal-reducing position measurement probe for mutual alignment of bodies has a speech input device and / or a speech output device. The probe is wirelessly linked to an external control or a higher-level supervisory computer either by an infrared interface or a radio link which operates at an extremely high frequency. Error-reducing measured value acquisition is effected by averaging. The average represents several individual measured value. In the acquisition of the individual measured values, it is watched that the times of measured value recording and the time peaks of a solid-borne sound oscillation on the measurement object are essentially asynchronous to one another.

The present invention relates to systems and methods that reduce quadra-phase shift key (QPSK) modulator assembly size, cost and complexity via employing microwave monolithic integrated circuit (MMIC) technology. The systems and methods provide MMICs that include positive-intrinsic-negative (PIN) diodes as phase shifters (e.g., binary, reflective, hybrid and switched filter) that mitigate the tight thermal control, complex drive electronics and calibration routines associated with conventional ferrite phase shifters. The systems and methods can be employed in connection with antenna auto-tracking system such as those associated with satellites, aircrafts and spacecrafts. Employing MMIC technology provides for chips that can be consistently fabricated for extremely high frequency (EHF) operation, and that can increase system performance via mitigating parasitic reactance.

An apparatus for detecting the bipolar HF wave of ventricle on the surface of body is composed of a movable unit consisting of signal acquisition circuit, amplifier, A / D converter and emitting module, and a fixed unit consisting of data receiver, USB communication unit, PC algorithm processing unit and output module. Its detecting method including signal conversion and removal of interference and noise is also disclosed.

The invention discloses a frequency octupling millimeter wave generation device through cascading of an intensity modulator (IM) and a DPMZM modulator and a frequency octupling millimeter wave generation method thereof, relates to the technical field of microwaves and the technical field of optical communication, and is mainly applied to generation of high-frequency millimeter waves. The method is shown in the appended drawings. The device comprises a light source, a radio frequency signal source, the IM modulator, a polarization controller, the DPMZM modulator, an electric splitter and a photoelectric detector. The IM modulator and the sub-modulator MZM-a of the DPMZM modulator work at the maximum point. The master modulator MZM-c of the DPMZM modulator works at the minimum point. The DC bias of the sub-modulator MZM-b of the DPMZM modulator is reasonably set so that frequency octupling millimeter wave signals can be generated. According to the method, the radio frequency index required for generating high frequency / extremely high frequency signals can be greatly reduced so that system cost can be reduced. Meanwhile, use of a filter is avoided so that the method has great frequency regulation. Finally the generated signals are low in phase noise and high in spectrum purity.

In one aspect, the present invention provides an active pixel sensor array with optimized matching between pixels and strength and frequency of incoming signals such as photons absorbed. The array comprises multiple pixels of individual geometry corresponds to spatial location. Each pixel full-well is adjustable via modifiable pixel conversion gain while maintaining pixel linearity. Furthermore each pixel internally stores multiple of extremely high frequency samples. Variable pixel geometry per row is very advantageous for Echelle spectrograph, where pixel heights are aligned with the spectrograph “order separator” where the resolution changes. In combination with variable geometry, externally adjustable full-well provides for superior spectral line separation in spectroscopy applications. In one embodiment multiple time windows with intermittent resets are stored within each pixel. This feature allows for the detection of extreme high frequency consecutive events without saturation such as may be the case with LIBS (Laser Induced Breakdown Spectroscopy).

An electronic device may include an auxiliary circuit providing an operative function, a data signal circuit, and an extremely high frequency (EHF) wireless transmitter. The auxiliary circuit may produce a first low frequency data signal. The data signal circuit may be coupled to the auxiliary circuit for encoding a first composite data signal including the first low frequency data signal and the first base high frequency data signal. The EHF wireless transmitter may transmit the first encoded composite data signal to an external device over a wireless EHF communication link. The transmitted encoded composite data signal may have a predefined rate of carrier modulation.

The invention relates to a traceable liquid sinusoidal pressure calibrating device based on an optical measurement method, and belongs to the field of optical metrology and measurement. The traceable liquid sinusoidal pressure calibrating device comprises a liquid sinusoidal pressure generator, a liquid dynamic pressure laser interference measurement system, a vibration isolation platform, a static pressure loading system and a data acquisition and analysis system. According to the invention, the frequency bandwidth of a sinusoidal pressure source is increased through cooperation between a piezoelectric transducer and a double-resonance tube cavity, and a frequency vacancy caused by the anti-resonance of a pressure transducer is filled; measurement of the refractive index change of water through a laser interferometric measuring system with a extremely high frequency band and in-situ static calibration enable dynamic pressure values to be reliably traced to static pressure; systems errors due to optical window vibration and the reflective index difference between water and air are eliminated through an optical window compensation cavity; a laser measurement optical head is fixedly connected with a secondary resonance tube and connected flexibly with a main resonance tube to eliminate the measurement errors introduced by the complex motion of the tubes driven by a transducer and improve the measurement accuracy.