摘要:
A multilayer band pass filter includes a zero point forming capacitor formed by a plurality of capacitors connected in series between first and second extension electrodes, and intermediate capacitors connected between each pair of adjacent series capacitors and the open end of a core conductor. Therefore, zero points can be formed at the lower and upper limits of a given band. The capacity of these capacitors is adjustable via extension electrodes which extend outside the baked ceramic casing, thereby allowing adjustment to be made to the zero point.
摘要:
A blast treatment method and an apparatus, which can perform the blast treatment of a treatment subject by using and securely initiating a blasting explosive having fluidity. The blast treatment method includes: a blasting preparation operation of housing a blasting explosive having fluidity in a container and placing the blasting explosive around a treatment subject as well as attaching an initiation device to the container; a housing operation of housing the container, the blasting explosive, and the treatment subject in a chamber; a decompression operation of decompressing the inside of the chamber; and a blasting operation of initiating the blasting explosive and blasting the treatment subject with the blasting explosive. In the decompression operation, the inside of the chamber is decompressed while a gas vent portion regulates the escape of the blasting explosive to the outside of the container and permits the escape of gases in the container to the outside.
摘要:
An antenna includes a dielectric substrate and an antenna element, wherein the dielectric substrate has a mark on an outer surface, the mark having a lower relative permittivity than the dielectric substrate, the antenna element is formed from a FPC film, and the FPC film has an antenna electrode on one side and a flexible insulating film with an adhesive layer on the other side and is adhered to the outer surface of the dielectric substrate with a tip or bend of the antenna electrode aligned with the mark.
摘要:
An electronic component module according to the invention includes: a mounting substrate 11 including a shield layer 13 and on which a first cavity 14a and a second cavity 14b are formed; a first electronic component 16a positioned in the first cavity 14a and used in a first frequency band; a second electronic component 16b positioned in the second cavity 14b and used in a second frequency band; lid members 15 which seal the first cavity 14a and the second cavity 14b; and patch antennas 17 which transmit/receive radio waves in the frequency bands, the antennas connected to the electronic components 16; wherein the electronic components 16 are mounted on the mounting substrate 11 via a substrate component 19 having a higher heat resistance than the mounting substrate 11 and that the mounting substrate 11 is composed of a member having a lower dielectric constant that the substrate component 19.
摘要:
A method of blasting hazardous substance or explosive in a pressure vessel is provided to improve efficiency while suppressing enlargement of the pressure vessel. To achieve it, the method includes an installing step of installing two or more articles to be treated at a certain spacing in the pressure vessel, an initial blasting step of blasting one of the articles to be treated, and a following blasting step of blasting the article to be treated next to the previously blasted article to be treated after a particular time from the instant of the previous blast. Each of the articles is blasted sequentially through the initial and following blasting steps.
摘要:
An antenna has a base and an antenna element in contact with the base. The product of the relative permittivity of the base and the relative permeability of the base varies with a negative gradient with respect to the frequency of the radio waves transmitted by the antenna element or received by the antenna element. The negative-gradient variation of the product acts to offset the frequency-dependent variation in the wavelength.
摘要:
An antenna device forms a discone antenna and comprises a pole-shaped base member 10a composed of dielectric material. The pole-shaped base member 10a has a cone-shaped inner space formed therein. In an inside surface of the pole-shaped base member 10a, a first antenna element 11 is formed by patterning a metal conductor layer. Further, on a plain surface facing the outside of the pole-shaped base member 10a, a second antenna element 12 is formed also by circularly patterning a metal conductor layer at the side of a top of the first antenna element 11 with a predetermined space being kept between the top of the first antenna element 11 and the second antenna element 12. The first antenna element 11 and the second antenna element 12 are located with respective rotation central axes thereof being corresponding with each other.
摘要:
An electronic component module has a device-side module A and an antenna-side module B. The device-side module A is equipped with a first dielectric substrate 11 that is formed with a first transmission line 11a and a high-frequency device 13 that is mounted on the first dielectric substrate 11 and is connected to the first transmission line 11a. The antenna-side module B is equipped with a second dielectric substrate 12 that is laid on the first dielectric substrate 11 in such a manner that they are arranged in a lamination direction and that is formed with a second transmission line 12a that is electrically connected to the first transmission line 11, and an antenna element 14 that is provided on the second dielectric substrate 12 and electrically connected to the high-frequency device 13 via the second transmission line 12a and the first transmission line 11a.
摘要:
The invention has for its object to achieve a high-performance lens antenna which can be integrated with the external (surface) shape of a mobile unit with no damage to the appearance of the mobile unit and is easy to manufacture and assemble at relatively low costs. To accomplish this, the invention provides a lens antenna mounted on a mobile unit, in which the radiation-side surface thereof and the focal-side surface thereof are each of a quasi-optical shape as a lens, and which is in a non-body of rotation form.
摘要:
A multiple resonance antenna includes a dielectric substrate, a first antenna electrode and a second antenna electrode, the first and second antenna electrodes being disposed together on the dielectric substrate with first ends connected to each other but with second ends remaining free, the dielectric substrate including a high-dielectric part having a higher relative permittivity than another part, the high-dielectric part being disposed beneath a part of the first antenna electrode including the second end.