6results about "Tubes with velocity/density modulated electron stream" patented technology

In an embodiment, an apparatus (100) is described. The apparatus is configured to generate electromagnetic radiation (102) comprising a frequency component in a frequency range of 10GHz to 10THz, the apparatus comprises an electron source (104) configured to produce an electron beam (106). The apparatus further comprises a magnetic field generator (108) configured to produce a magnetic field to condition and guide the electron beam within an interaction region where the electromagnetic radiation (102) is generated. The apparatus further comprises a waveguide (110) comprising a cylindrical structure. The cylindrical structure is coaxially aligned with the electron beam in the interaction region. An inner surface (216) of the cylindrical structure is configured to facilitate a Cherenkov interaction between the electron beam and an electromagnetic field excited and supported inside the waveguide to generate the electromagnetic radiation. The apparatus further comprises an output coupler (112) configured to output the electromagnetic radiation from the apparatus. The apparatus further comprises an electron beam collector (114) configured to collect the electron beam and recuperate energy from the electron beam after the interaction region.

In order to solve the application problem of the traditional extended interaction device in the high frequency terahertz frequency band, the characteristic impedance of the resonant cavity and the interaction efficiency need to be improved, and the most effective method to improve the impedance is to introduce a new extended interaction resonant cavity operating mode. The application discloses an extended interaction oscillator based on staggered double grids, on the basis of the existing extended interaction oscillator, two groups of gratings are staggered along the z direction to form a staggered double grid structure, and the coupling input and output structure is moved to the electron beam injection end outside the y direction resonant cavity, so that a new operating mode, i.e. close to 2pi mode, is generated, stronger interaction effect is generated, the coupled energy is output to the rectangular waveguide through the coupling input and output structure, so that the purpose of reducing the interaction circuit length of the extended interaction oscillator is achieved.

In order to solve the application problem of a traditional extended interaction device in a high-frequency terahertz frequency band, the characteristic impedance and interaction efficiency of the resonant cavity need to be improved, and the most effective method for improving the impedance is to introduce a new working mode of the extended interaction resonant cavity. On the basis of an existing extended interaction oscillator, two groups of gratings are distributed in a staggered mode in the z direction to form a staggered double-gate structure, and meanwhile, a coupling input and output structure is moved to an electron beam injection end on the outer side of a resonant cavity in the y direction to form a double-gate structure. Therefore, a new working mode which is close to a 2pi mode is generated, a stronger interaction effect is generated, coupled energy is output to the rectangular waveguide through the coupling input and output structure, and the purpose of reducing and expanding the length of an interaction circuit of the interaction oscillator is achieved.

To provide an electronic system equipped with a heat-transport fluid cooling circuit.SOLUTION: An electronic system comprises: an external jacket (11); a wall (12) of an internal cavity (13) that is to be cooled; at least one fixed connection fixing the external wall (12) of the internal cavity (13) that is to be cooled to the external jacket; a heat-transport fluid cooling circuit (14) comprising grooves (15) on an external surface (16) of the wall (12) of the internal cavity (13) and a sleeve (17) comprising a flexible portion (18) positioned flush with the external surface (16) of the external wall (12) of the internal cavity (13), thereby forming mini-canals (19) with the grooves (15); a radial extension of the wall (12) of the internal cavity (13) creating connecting points intended to hold the sleeve (17) in place; and a space (20) between the external jacket (11) and the sleeve (17) at the flexible portion (18) of the sleeve (17).SELECTED DRAWING: Figure 7

In one embodiment, an apparatus (100) is described. The apparatus includes an electron source (104) configured to generate electromagnetic radiation (102) including frequency components in a frequency range of 10 GHz to 10 THz and configured to produce an electron beam (106). The apparatus further includes a magnetic field generator (108) configured to generate a magnetic field that conditions and guides the electron beam within an interaction region where the electromagnetic radiation (102) is generated. The apparatus further includes a waveguide (110) comprising a cylindrical structure. The cylindrical structure is aligned coaxially with the electron beam in the interaction region. An inner surface (216) of the cylindrical structure is configured to facilitate Cerenkov interaction between the electron beam and an electromagnetic field excited and supported inside the waveguide to generate the electromagnetic radiation. The apparatus further includes an output coupler (112) configured to output the electromagnetic radiation from the apparatus. The apparatus further includes an electron beam collector (114) configured to collect the electron beam and recover energy from the electron beam after the interaction region.

An apparatus (100) is described in one embodiment. The apparatus is configured to generate electromagnetic radiation (102) comprising a frequency component having a frequency range in the range of 10 GHz to 10 THz, the apparatus comprising an electron source (104) configured to generate an electron beam (106). The apparatus also includes a magnetic field generator (108) configured to generate a magnetic field to condition and direct the electron beam within an interaction region in which the electromagnetic radiation (102) is generated. The apparatus further comprises a waveguide (110) comprising a cylindrical structure. The cylindrical structure is coaxially aligned with the electron beam in the interaction region. An inner surface (216) of the cylindrical structure is configured to promote Cherenkov-type interaction between the electron beam and an electromagnetic field excited and maintained inside the waveguide to generate electromagnetic radiation. The apparatus also includes an output coupler (112) configured to output electromagnetic radiation from the apparatus. The apparatus also includes an electron beam collector (114) configured to collect the electron beam after the interaction region and recover energy from the electron beam.