The objective of the invention is to provide a microwave tube, or the like, wherein gas adsorption action of a getter may be satisfactorily performed independently from a microwave amplification operation. In order to...
标准号:
EP3584819(A4)
The objective of the invention is to provide a microwave tube, or the like, wherein gas adsorption action of a getter may be satisfactorily performed independently from a microwave amplification operation. In order to solve this problem, this microwave electron tube comprises: a helix wherein a microwave may progress oriented from an input section to an output section within a helical tube;an electron gun emitting an electron flow oriented toward the helix;a focusing device causing the electron flow to traverse the vicinity of the helix in the direction of a collector;the collector absorbing the electron flow;and a getter having a heater insulated from the cathode provided in the electron gun.
In order to suppress the amount of time needed for the start-up of a microwave tube carried out when voltage fed from a power source has decreased, while avoiding increase in scale of a power storage unit, this power ...
标准号:
CA3184915(A1)
In order to suppress the amount of time needed for the start-up of a microwave tube carried out when voltage fed from a power source has decreased, while avoiding increase in scale of a power storage unit, this power supply device includes: a power supply unit that supplies power fed from the power source to the microwave tube that is provided with a cathode, a heater for heating the cathode, an anode, and a collector;a power storage unit that stores the fed power and, if the voltage of the fed power decreases, supplies stored power that is power obtained by the power storing, to the microwave tube;and a power supply switching unit that, if the voltage of the fed power decreases, stops supplying the stored power to the anode and does not stop supplying the stored power to the heater.
The invention corrects a discrepancy from a design value due to variations or the like in component dimensional accuracy, assembly accuracy or permittivity, to maintain the design value. The invention comprises: a cir...
标准号:
EP3605723(A4)
The invention corrects a discrepancy from a design value due to variations or the like in component dimensional accuracy, assembly accuracy or permittivity, to maintain the design value. The invention comprises: a circular waveguide that has a cylindrical section having a circular pipe conduit with a circular shaped cross section, and side wall sections joined to the both sides in an axial direction of the cylindrical section;a first rectangular waveguide that has a first rectangular pipe conduit with a rectangular shaped cross section and that is joined to one of the side wall sections so that the first rectangular pipe conduit communicates with the circular pipe conduit;a second rectangular waveguide that has a second rectangular pipe conduit with a rectangular shaped cross section and that is joined to the other of the side wall sections so that the second rectangular pipe conduit communicates with the circular pipe conduit;and a dielectric plate that is configured as a plate shape, is disposed in the circular pipe conduit, and is airtightly held to the cylindrical section, wherein the circular waveguide has a plastically deformable section that is plastically deformable so that at least the length in an axial direction of the circular waveguide can be changed.
To suppress a ghost mode in a pillbox type transmission ***: A pillbox type transmission window comprises an input/output window of a microwave tube. The pillbox type transmission window comprises: a disc-shaped membe...
标准号:
JP2022183690(A)
To suppress a ghost mode in a pillbox type transmission ***: A pillbox type transmission window comprises an input/output window of a microwave tube. The pillbox type transmission window comprises: a disc-shaped member 1 in which a metalize layer is formed in an outer peripheral portion of disc-shaped ceramics;a pair of annular members 2 consisting of a metal having an outer diameter substantially equal to that of the disc-shaped member 1 and integrated with the outer peripheral portion of the disc-shaped member 1 while being disposed with the disc-shaped member 1 interposed from both sides;a cylindrical member 3 consisting of a metal having an inner diameter substantially equal to the outer diameter of the pair of annular members 2 and the disc-shaped member 1 and holding the pair of metal components and the disc-shaped member inside;and a regulation member 4 by which, between the annular members and the cylindrical member, the rotations thereof are *** DRAWING: Figure 1
Volcano-structured double-gated field emitter arrays (VDG-FEAs) have realized both highly focusing electron beam and high emission current. The prototype image sensor using Spindt-type VDG-FEA has obtained a reproduce...
Volcano-structured double-gated field emitter arrays (VDG-FEAs) have realized both highly focusing electron beam and high emission current. The prototype image sensor using Spindt-type VDG-FEA has obtained a reproduced image with uniform image intensity without magnetic focusing. we describe a compact image sensor using the VDG-FEA. We are developing a 300 GHz band traveling wave tube (TWT) using a thermal cathode. We believe that the VDG-FEA is a promising cathode for the 300 GHz TWT in the future.
Provided are: a microwave tube with which it is possible to suppress complication of structure, adjustment, etc., and to contribute to keeping high-frequency output of the microwave tube constant for a long period of ...
标准号:
WO2021/112081(A1)
Provided are: a microwave tube with which it is possible to suppress complication of structure, adjustment, etc., and to contribute to keeping high-frequency output of the microwave tube constant for a long period of time;and a method for controlling the microwave tube. The microwave tube comprises: an electron gun that discharges an electron beam;a magnetic circuit that focuses the electron beam discharged from the electron gun;a collector that captures the electron beam that has passed through the magnetic circuit;a high-frequency circuit that is arranged in a spiral shape around the electron beam focused in the magnetic circuit, and with which a high-frequency wave is propagated;and a magnetic body component arranged so as to be able to move in the discharge direction of the electron beam around the electron gun, the microwave tube being configured so that the magnetic body component is moved in the discharge direction of the electron beam, whereby high-frequency output outputted from the high-frequency circuit is controlled to be constant.
Ringing of a signal after passing through a low pass filter in an LINC type linear amplifier is remedied. A linear amplifying device includes the linear amplifier including the low pass filter for removing high-freque...
标准号:
EP3468033(A4)
Ringing of a signal after passing through a low pass filter in an LINC type linear amplifier is remedied. A linear amplifying device includes the linear amplifier including the low pass filter for removing high-frequency components;and an origin avoiding circuit which receives an original input signal and is provided upstream of the linear amplifier. If the original input signal is sampled in the vicinity of an origin, the origin avoiding circuit modifies a sampled value so at to replace the sampled value with a fixed value, and supplies the modified input signal to the linear amplifier.
An invention comprises: a circular waveguide that has a cylindrical section having a circular pipe conduit with a circular shaped cross section, and side wall sections joined to the both sides in an axial direction of...
标准号:
US20200020999(A1)
An invention comprises: a circular waveguide that has a cylindrical section having a circular pipe conduit with a circular shaped cross section, and side wall sections joined to the both sides in an axial direction of the cylindrical section;a first rectangular waveguide that has a first rectangular pipe conduit with a rectangular shaped cross section and that is joined to one of the side wall sections so that the first rectangular pipe conduit communicates with the circular pipe conduit;a second rectangular waveguide that has a second rectangular pipe conduit with a rectangular shaped cross section and that is joined to the other of the side wall sections so that the second rectangular pipe conduit communicates with the circular pipe conduit;and a dielectric plate that is configured as a plate shape, is disposed in the circular pipe conduit, and is airtightly held to the cylindrical section, wherein the circular waveguide has a plastically deformable section that is plastically deformable so that at least the length in an axial direction of the circular waveguide can be changed.
To suppress both influence of electron emission from a cathode side surface and consumption of energy to be supplied to a heater, while being provided with a grid, an electron gun of the present invention includes: a ...
标准号:
US2019027335(A1)
To suppress both influence of electron emission from a cathode side surface and consumption of energy to be supplied to a heater, while being provided with a grid, an electron gun of the present invention includes: a cathode capable of emitting electrons by heating;a grid capable of controlling the electron emission;and a cathode shield which is an conductor including a material portion located in the vicinity of a side surface of the cathode and facing at least a portion of the side surface via a gap or a heat insulating material, and not being made in direct physical coupling nor in direct physical contact with the cathode.
Ringing of a signal after passing through a low pass filter in an LINC type linear amplifier is remedied. A linear amplifying device includes the linear amplifier including the low pass filter for removing high-freque...
标准号:
EP3468033(A1)
Ringing of a signal after passing through a low pass filter in an LINC type linear amplifier is remedied. A linear amplifying device includes the linear amplifier including the low pass filter for removing high-frequency components;and an origin avoiding circuit which receives an original input signal and is provided upstream of the linear amplifier. If the original input signal is sampled in the vicinity of an origin, the origin avoiding circuit modifies a sampled value so at to replace the sampled value with a fixed value, and supplies the modified input signal to the linear amplifier.
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