摘要:
A high-frequency signal generator has upper and lower conductive plates parallel to each other, at least one dielectric rod held between the upper and lower conductive plates, a metal mount sandwiched between the upper and lower conductive plates, a oscillating element mounted on a side of the mount for generating a high-frequency signal, a printed-circuit board mounted on the side of the mount and including a bias supply circuit disposed on a surface thereof for supplying a bias voltage to the oscillating element to enable the oscillating element to generate a high-frequency signal, and a positional displacement preventing structure on at least one of the upper and lower conductive plates for preventing the mount from being positionally displaced with respect to the dielectric rod. The positional displacement preventing structure may comprise a groove defined in at least one of the upper and lower conductive plates, the mount being partly fitted in the groove.
摘要:
A radar module includes a high-frequency signal generator comprising upper and lower parallel conductive plates, at least one dielectric rod held between the parallel conductive plates, a metal diode mount held between the parallel conductive plates, a gunn diode member mounted on a side of the diode mount, and a printed-circuit board mounted on the side of the diode mount in covering relationship to the gunn diode member and having a bias supply circuit on its surface for supplying a bias voltage to the gunn diode member. One terminal of the gunn diode member extends through a through hole defined in the printed-circuit board, is exposed in the vicinity of the surface of the diode mount, and is connected to the bias supply circuit. The printed-circuit board has a rectangular metal pattern dimensionally adjustable for adjusting the oscillation frequency of the gunn diode member, and a varactor diode for modulating the frequency of a signal generated by the gunn diode member so that the high-frequency signal generator can function as an FM signal generator.
摘要:
A radar module includes a high-frequency signal generator comprising upper and lower parallel conductive plates, at least one dielectric rod held between the parallel conductive plates, a metal diode mount held between the parallel conductive plates, a gunn diode member mounted on a side of the diode mount, and a printed-circuit board mounted on the side of the diode mount in covering relationship to the gunn diode member and having a bias supply circuit on its surface for supplying a bias voltage to the gunn diode member. One terminal of the gunn diode member extends through a through hole defined in the printed-circuit board, is exposed in the vicinity of the surface of the diode mount, and is connected to the bias supply circuit. The printed-circuit board has a rectangular metal pattern dimensionally adjustable for adjusting the oscillation frequency of the gunn diode member, and a varactor diode for modulating the frequency of a signal generated by the gunn diode member so that the high-frequency signal generator can function as an FM signal generator.
摘要:
An NRD guide circuit is assembled by arranging, on a lower conductive plate, a positioning member of a material (e.g., foaming styrol resin, foaming urethane or the like) having a dielectric constant smaller than that of a dielectric strip, followed by placing such component parts of the NRD guide circuit as a dielectric strip at a position delimited by the positioning member, whereafter an upper conductive plate is secured thereto.
摘要:
Dielectric circuit components such as a dielectric strip, dielectric blocks and dielectric ring inserted between conductive plates are molded from a thermoplastic material. As the thermoplastic material, thermoplastic resin is used which has a dielectric constant not greater than 2.4. The dielectric circuit components may be injection-molded from an injection-moldable high polymer material which contains fluorine and has a melting point not greater than 300.degree. C.
摘要:
A radar system allows switched use of an FM-CW radar mode and a phase difference radar mode, the FM-CW radar mode being designed for use in sensing a target at a medium and long distance away and the phase difference radar mode being designed for use in sensing a target at a short distance away, whereby a target at an extremely short to long distance away can be sensed with high accuracy.
摘要:
A drying apparatus provided with a heating portion which includes two nipping members and which is configured to heat a recording medium being nipped by and between the two nipping members, wherein one of the two nipping members is disposed in opposition to the other of the two nipping members, and includes an air-permeable elastic member, and a liquid-repellant film which covers a surface of the elastic member in opposition to the above-indicated other nipping member and which has a plurality of through-holes formed therethrough.
摘要:
An image recording apparatus includes: a transport unit that transports, along a transport path, a medium having a recording base material whose one surface is a recording layer for an image and whose other surface is an adhesive layer and a separating base material that covers the adhesive layer; a recording unit that records an image onto the medium; a heating unit that fixes the recorded image onto the medium; and a humidifying unit that humidifies the medium.
摘要:
A recording apparatus, including: a recording head; a conveying member for conveying a recording medium in a conveyance direction; a wiper whose distal end is to come into contact with and separate away from the surface; a wiper driving mechanism for driving the wiper to conduct a wiping operation in which the distal end is brought into contact with the surface and the wiper is moved relative to the surface in an intersecting direction that intersects the conveyance direction for wiping the surface; a retainer for giving, to the conveying member, a retaining force for preventing a movement of the conveying member in the intersecting direction; and a controller for controlling the retainer to give the retaining force to the conveying member and for controlling the driving mechanism to conduct the wiping operation, in a state in which the movement of the conveying member in the conveyance direction is halted.
摘要:
An ink jet recording apparatus may include a conveying device configured to move a conveying belt including a conveying surface to convey a recording medium. The ink jet recording apparatus may include a recording head configured to discharge ink onto the recording medium. The ink jet recording apparatus may include an attraction device including first and second electrodes facing a surface opposite the conveying surface and configured to apply a voltage between the first and second electrodes. The ink jet recording apparatus may include a contact member which comes into contact with the conveying surface. The first and second electrodes may be disposed at a distance from each other in the width direction of the conveying belt. A contacting area of the conveying surface with which the contact member comes into contact may not extend over the first and second electrodes in the width direction.