| Patent application number | Description | Published |
|---|
| 20080212304 | Wave Absorber and Manufacturing Method of Wave Absorber - The problem of the present invention is to offer a wave absorber that has reflection attenuation capability sufficient to enable prevention of communication disturbances due to reflection and the like of EM waves, that enables greater thinness and lighter weight, and that has wide-band attenuation properties, as well as a manufacturing method of the wave absorber. The wave absorber of the present invention has a structure which sequentially laminates a grid-like conductor layer composed of an electric conductor, a first dielectric layer, a high-resistance conductor layer having a surface resistivity within a prescribed range, a second dielectric layer, and a pattern layer having multiple patterns composed of an electric conductor, wherein each pattern in said pattern layer differs in either or both of size and form relative to another adjacent pattern. | 09-04-2008 |
| 20090046026 | CIRCULARLY POLARIZED ANTENNA - To provide a circularly polarized antenna capable of obtaining an excellent axial ratio over a very wide range and having a great gain in a zenith direction. The circularly polarized antenna ( | 02-19-2009 |
| 20090058732 | Wideband antenna unit - To provide a thin wideband antenna unit capable of shrinking the size of a radiation element in a case where a dielectric is not used. | 03-05-2009 |
| 20090207086 | ANTENNA APPARATUS - In an antenna apparatus, a radiation element includes a perturbation element. A first power feeding line has a first end connected to the radiation element and is configured to feed power to the radiation element. A second power feeding line has a first end configured to feed power to the radiation element through electromagnetic coupling. The radiation element, the first power feeding line and the second power feeding line are arranged on a same plane to constitute a balance type antenna. | 08-20-2009 |
| 20090207088 | ANTENNA APPARATUS - An antenna apparatus, including: an antenna device including a feeding point and a pair of antenna elements placed symmetrically with respect to the feeding point; and a parasitic device placed parallel to each of the antenna elements of the antenna device and including one or a plurality of elements placed at a position separated from each of the antenna elements, wherein the element of the parasitic device includes a gap at a center of the element in an extending direction and includes a pair of sub-elements structured symmetrically with respect to the gap as a boundary. | 08-20-2009 |
| 20100053006 | Antenna Device - An antenna device includes a plurality of loop elements. The loop elements are made of conductive material, and constitute a planar antenna element having N-fold rotationally symmetric shape with respect to a center portion of the planar antenna element, the N being an integer of three or more. Each of the loop elements includes at least two first elements extending in a first direction parallel to a radial direction of the planar antenna element and at least one second element extending in a circumferential direction of the planar antenna element. A ground plate is made of conductive material and opposes the planar antenna element. A power feeding line extends from the ground plate to the planar antenna element, and is electrically connected to the planar antenna element at the center portion. | 03-04-2010 |
