To achieve a frequency measurement device, frequency measurement method and program that measure a frequency of a micro wave subjected to a short pulse modulation with stable accuracy and in a short ***: A frequency m...
标准号:
JP2018197707(A)
To achieve a frequency measurement device, frequency measurement method and program that measure a frequency of a micro wave subjected to a short pulse modulation with stable accuracy and in a short ***: A frequency measurement device comprises: a phase detection circuit that separates a short pulse modulation signal subjected to sampling in a first cycle into an orthogonal phase component;a pulse detection circuit;and a control unit that calculates a phase angle from the orthogonal phase component, and calculates a second cycle from a first phase angle at a first time at which a pulse rises, a second phase angle at a second time having a first cycle added to the first time, and the first cycle, and when a third time adding to quotient having the second cycle divided by the first cycle a first clock time multiplied by the first cycle and the second time comes after a fourth time at which the pulse falls down, calculates a third cycle from a third phase angle at a third time, the second phase angle and the first clock time, and, when the fourth time comes before the third time, calculates a third cycle from a fourth phase angle at the fourth time, the second phase angle and the first clock *** DRAWING: Figure 1
PROBLEM TO BE SOLVED: To provide a mounting method of coils capable of facilitating adjustment of high frequency characteristics while down-sizing, and to provide a high frequency circuit and a board filter circuit fo...
标准号:
JP2018022838(A)
PROBLEM TO BE SOLVED: To provide a mounting method of coils capable of facilitating adjustment of high frequency characteristics while down-sizing, and to provide a high frequency circuit and a board filter circuit for a high frequency ***: In the mounting method of coil, at least one of setting the place for mounting a coil higher than other places on a board, providing a digging part or an aperture in the mounting place, and setting the length of the coil terminal so that the coil becomes higher than the surrounding components, is performed and the periphery of the coil, including between the coil and the board, is used as a shape adjustment space of the coil, and the high frequency characteristics of a circuit including the coil is adjusted by adjusting the shape of the *** DRAWING: Figure 1
PROBLEM TO BE SOLVED: To provide a seabed projection identification device capable of identifying whether a seabed projection is an underwater sailing ***: A seabed projection identification device 100 is mounted on a...
标准号:
JP2018171980(A)
PROBLEM TO BE SOLVED: To provide a seabed projection identification device capable of identifying whether a seabed projection is an underwater sailing ***: A seabed projection identification device 100 is mounted on a vessel on the sea, and provided with: a calculation unit 101 that calculates horizontal distances to the vessel at a place from which a sounding bullet is shot and a seabed projection, where an echo sound from the seabed projection in response to a shock wave generated when the sounding bullet shot from the vessel explodes in water, is received later by a prescribed time than a direct sound generated when the sounding bullet explodes;a reception unit 102 that receives the echo sound caused by the explosion of the sounding bullet shot to the place at the calculated distance;and an identification unit 103 that identifies the kind of the seabed projection through frequency analysis of the received echo *** DRAWING: Figure 11
Provided are a slow wave circuit and a traveling wave tube suitable for an increase in fineness with regard to processing beam holes, and suitable for higher frequencies. A slow wave circuit (10) includes a meandering...
标准号:
US2018337016(A1)
Provided are a slow wave circuit and a traveling wave tube suitable for an increase in fineness with regard to processing beam holes, and suitable for higher frequencies. A slow wave circuit (10) includes a meandering waveguide (1) and a beam hole (2) that pierces the meandering waveguide (1), and the cross-section of the beam hole (2) in the direction orthogonal to the long direction is in the shape of a polygon having a larger number of sides than a quadrilateral.
Provided are a traveling wave tube and a high-frequency circuit system such that the product life span of the traveling wave tube operating in multiple modes can be extended while variations in gain and amplification ...
标准号:
US10068738(B2)
Provided are a traveling wave tube and a high-frequency circuit system such that the product life span of the traveling wave tube operating in multiple modes can be extended while variations in gain and amplification efficiency that accompany switching of the operation modes can be suppressed. The traveling wave tube comprises: an electron gun equipped with a cathode that releases electrons, and a heater that provides the cathode with heat energy for releasing the electrons;a helix causing an RF signal to interact with an electron beam formed from the electrons released by the electron gun;a collector for catching the electron beam emitted by the helix;an anode whereby the electrons released from the electron gun are guided into the helix;and a magnetic field application device for generating a magnetic field in order to change the diameter of the electron beam, said magnetic field application device being supplied with electric power for generating the magnetic field from the outside.
To provide an electronic component housing apparatus that is able to efficiently cool the heat of a first and second electronic component, a first electronic component housing chamber 5000 houses the high voltage powe...
标准号:
US2018324981(A1)
To provide an electronic component housing apparatus that is able to efficiently cool the heat of a first and second electronic component, a first electronic component housing chamber 5000 houses the high voltage power supply module 100 (the first electronic component). A second electronic component housing chamber 6000 houses the TWT 200 (the second electronic component). At least some of a first partition plate 2500 and a second partition plate 2600 are provided so as to face each other. A first gap part G1 is provided between the first partition plate 2500 and the second partition plate 2600.
Provided are a slow wave circuit and a traveling wave tube suitable for an increase in fineness with regard to processing beam holes, and suitable for higher frequencies. A slow wave circuit (10) includes a meandering...
标准号:
EP3392899(A1)
Provided are a slow wave circuit and a traveling wave tube suitable for an increase in fineness with regard to processing beam holes, and suitable for higher frequencies. A slow wave circuit (10) includes a meandering waveguide (1) and a beam hole (2) that pierces the meandering waveguide (1), and the cross-section of the beam hole (2) in the direction orthogonal to the long direction is in the shape of a polygon having a larger number of sides than a quadrilateral.
Die Erfindung stellt eine Verz?gerungsschaltung zum Sicherstellen einer weitreichenden Bandbreite für einen gefalteten Wellenleiter bereit. Die Verz?gerungsschaltung ist mit einem gefalteten Wellenleiter und eine...
标准号:
DE112017001223(T5)
Die Erfindung stellt eine Verz?gerungsschaltung zum Sicherstellen einer weitreichenden Bandbreite für einen gefalteten Wellenleiter bereit. Die Verz?gerungsschaltung ist mit einem gefalteten Wellenleiter und einem Strahlloch versehen. Das Strahlloch ist in die Breitenrichtung des gefalteten Wellenleiters zwischen einer Kante und einer Mitte angeordnet. Das Strahlloch ist vorzugsweise in die Breitenrichtung des gefalteten Wellenleiters an einer Kante an einer Position angeordnet, die nicht über den gefalteten Wellenleiter vorsteht. Das Strahlloch ist vorzugsweise an einer Position angeordnet, die in die Breitenrichtung des gefalteten Wellenleiters durch einen vorgeschriebenen Abstand von der Kante getrennt ist.
A cryptographic communication method comprises: (A) two or more terminals each preparing a set of a first public key and a first secret key;(B) one of the two or more terminals creating a set of a second public key an...
标准号:
WO2018216749(A1)
A cryptographic communication method comprises: (A) two or more terminals each preparing a set of a first public key and a first secret key;(B) one of the two or more terminals creating a set of a second public key and a second secret key, and delivering the set to another terminal;(C) the one of the two or more terminals, using the first secret key prepared in (A) and the second public key shared in (B), creates a common key;(D) the other of the two or more terminals, using the second secret key shared in (B) and the first public key of the one terminal prepared in (A), creates a common key for use in communication with the one terminal;and (E) a set of the terminals implementing cryptographic communication using the common key.
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