摘要:
A top loaded antenna unit is provided for concealed mounting within a vehicle below a covering or panel of dielectric material. The antenna unit includes a top load plate, a ground plate disposed in a spaced relation to the top load plate and electromagnetically coupled thereto through a matching element. The antenna unit additionally includes a dielectric member which is disposed in proximity to the top load plate for shifting resonance frequency of the antenna to a predetermined extent. The top load plate and the ground plate are assembled together with the dielectric member into a unitary structure for mounting within the vehicle below the covering or panel of dielectric material, at which condition resonance frequency of the antenna can be free from being affected from the covering or panel of the vehicle but affected solely from the dielectric member of which effect on the frequency shifting is known. Whereby, the antenna can give stable resonance frequency as intended only in consideration of the dielectric member and without being substantially influenced by other outside environments.
摘要:
A top loaded antenna comprises a spaced pair of top load plate and a ground plate. A matching element integrally formed with a feedline and a shortline is disposed between the top plate and the ground plate for coupling between the plates, eliminating the necessity of separately and individually coupling the feedline element and shortline element to the plates.
摘要:
This antenna unit is adapted to be connected to an electronic device for transmitting a received radio signal to the electronic device. The antenna unit comprises a noise canceller for canceling noise generated in the electronic device and transmitted to the antenna unit through a ground line. The noise canceller is a conductive stub piece one end of which is electrically connected to an electromagnetic shield of the antenna unit and the other end of which is a free end. The stub piece has a length of about ¼ of a wavelength of the radio signal.
摘要:
This antenna unit is adapted to be connected to an electronic device for transmitting a received radio signal to the electronic device. The antenna unit comprises a noise canceller for canceling noise generated in the electronic device and transmitted to the antenna unit through a ground line. The noise canceller is a conductive stub piece one end of which is electrically connected to an electromagnetic shield of the antenna unit and the other end of which is a free end. The stub piece has a length of about ¼ of a wavelength of the radio signal.
摘要:
A tomographic imaging apparatus includes: a light source; an optical splitter unit for splitting light from the light source into reference light and measuring light; a reference optical system including an adjustment unit for adjusting an optical path length of the reference light; a spectral unit for spectrally splitting combined light of the reference light and the return light obtained by irradiating an object to be inspected with the measuring light so as to acquire an interfering signal; a detection unit for detecting an optical path length when a tomographic image of the object is photographed; a storage unit for recording data about a refractive index of a refracting element of the object; and a calculation unit for calculating image data from the interfering signal acquired by the spectral unit based on an actual size using data about the optical path length and the refractive index.
摘要:
A production method of an electronic component includes: forming a sheet having a resin layer and a metal layer formed under the resin layer; bonding the sheet to a substrate so that the metal layer is arranged on a functional portion of an acoustic wave element formed on the substrate, a frame portion surrounding the functional portion is formed between the metal layer and the substrate, a cavity is formed on the functional portion by the metal layer and the frame portion, and the resin layer covers the metal layer and the frame portion.
摘要:
For each input variable value set, an indicator value associated with dispersion of actually measured output variable values is calculated from data including, for each input variable value set, the actually measured output variable values. Then, a processing to cause a simulator to compute a calculated output variable value for each combination of a candidate input parameter value sets and one input variable value set, and a processing to calculate, for each candidate input parameter value set, an entire error obtained by taking into consideration, with respect to all input variable value sets, partial errors obtained respectively by evaluating, by the indicator value for a corresponding input variable value set, difference between the calculated and actually measured output variable values for the corresponding input variable value set are repeated to identify the candidate input parameter value set making the entire error minimum.
摘要:
A radiation image processing apparatus which processes non-spiral projection data obtained by radiation imaging performed by rotating a radiation generator and a two-dimensional radiation detector relative to a subject reconstructs the non-spiral projection data into first volume data subjected to an averaging process in a direction of a rotation axis of the rotation and second volume data not subjected to the averaging process. The radiation image processing apparatus performs planar reconstruction calculation using the first volume data to generate a cross section image in a first plane perpendicular to the direction of the rotation axis and performs planar reconstruction calculation using the second volume data to generate a cross section image in a second plane parallel to the direction of the rotation axis. The resulting cross section images are displayed on a display apparatus.
摘要:
A communication module includes a filter element, a package substrate on which the filter element is mounted, and a module substrate on which the package substrate is mounted. Each of the package substrate and the module substrate is formed of a laminate of a plurality of metal layers and a plurality of insulation layers. An outermost insulation layer forming a mounting surface of the package substrate that is a surface on which the filter element is mounted has a thickness smaller than a thickness of at least one of the other insulation layers included in the package substrate. An outer insulation layer forming a mounting surface of the module substrate that is a surface on which the package substrate is mounted has a thickness smaller than a thickness of at least one of the other insulation layers included in the module substrate.
摘要:
In an OCT apparatus used in ophthalmology, if a working distance between an eye to be inspected and an objective lens varies, a shape of an obtained tomographic image is changed. This means that the OCT apparatus cannot be used for examining a variation of eyeball shapes. Provided is an optical coherence tomographic imaging method, including: acquiring a first distance between the eye to be inspected and the objective lens, corresponding to first tomographic image of the eye to be inspected; and correcting the first tomographic image to be second tomographic image corresponding to a second distance between the eye to be inspected and the objective lens, which is different from the first distance.