Abstract: A first printed circuit board for vertical polarized wave has a plurality of vertical polarized wave elements which serves as antenna elements, and a first feeder circuit which is connected to the plurality of vertical polarized wave elements. A second printed circuit board for horizontal polarized wave has a second feeder circuit which is connected to a plurality of horizontal polarized wave elements which serves as antenna elements, and is mounted with the plurality of horizontal polarized wave elements. A cutout portion is provided between the adjacent two vertical polarized wave elements of the first printed circuit board, and the first and second printed circuit boards are arranged parallel so that the horizontal polarized wave elements are arranged in the cutout portions of the first printed circuit board.

Abstract: To provide a dual polarized antenna capable of reducing correlation between antenna elements. A dual polarized antenna is constituted by a vertically polarized antenna and a horizontally polarized antenna formed on a printed circuit board and radiates two kinds of polarized waves.

Abstract: A patch antenna is provided with a metallic wall (1); a patch conductor (4) formed on a printed board (2), i.e., a dielectric substrate, by etching or the like; and a power feeding means for the patch conductor. The metallic wall (1) is bent forward along the both side surfaces of the printed board (2). The metallic wall (1) is inclined inward, and an interval between the both end portions is smaller than a radiation aperture dimension of the patch antenna when viewed from an antenna radiation direction. With such configuration, a directional beam width can be widened, and the directional beam width on a surface parallel to the polarization surface of linearly-polarized wave and the directional beam width on a surface orthogonally intersecting with the polarization surface of the linearly-polarized wave are accorded with each other.

Abstract: A resist pattern for alignment measurement being shrunk by a heat flow includes a plurality of positive type or negative type line patterns. Widths of spaces between the line patterns are greater than twice those of the line patterns. Alternatively, the resist pattern comprises a box-shaped or slit-shaped measurement pattern and a pair of box-shaped or slit-shaped auxiliary patterns provided inside and outside the measurement pattern, respectively.

Abstract: A first printed circuit board for vertical polarized wave has a plurality of vertical polarized wave elements which serves as antenna elements, and a first feeder circuit which is connected to the plurality of vertical polarized wave elements. A second printed circuit board for horizontal polarized wave has a second feeder circuit which is connected to a plurality of horizontal polarized wave elements which serves as antenna elements, and is mounted with the plurality of horizontal polarized wave elements. A cutout portion is provided between the adjacent two vertical polarized wave elements of the first printed circuit board, and the first and second printed circuit boards are arranged parallel so that the horizontal polarized wave elements are arranged in the cutout portions of the first printed circuit board.

Abstract: An antenna having two beams low in correlation and effective for MIMO is provided. The antenna includes a first array antenna and a second array antenna. The first array antenna and the second array antenna have directivities different in direction, respectively. A maximum radiation direction of a combined beam from the first array antenna is oriented to a direction of ?1. A maximum radiation direction of a combined beam from the second array antenna is oriented to a direction of ?2 corresponding to a null point of the combined beam from the first array antenna.

Abstract: To provide a dual polarized antenna capable of reducing correlation between antenna elements. A dual polarized antenna is constituted by a vertically polarized antenna and a horizontally polarized antenna formed on a printed circuit board and radiates two kinds of polarized waves.

Abstract: A resist pattern for alignment measurement being shrunk by a heat flow includes a plurality of positive type or negative type line patterns. Widths of spaces between the line patters are greater than twice those of the line patterns. Alternatively, the resist pattern comprises a box-shaped or slit-shaped measurement pattern and a pair of box-shaped or slit-shaped auxiliary patterns provided inside and outside the measurement pattern, respectively.

Abstract: A resist pattern for alignment measurement being shrunk by a heat flow comprises a plurality of positive type or negative type line patterns. Widths of spaces between the line patters are greater than twice those of the line patterns. Alternatively, the resist pattern comprises a box-shaped or slit-shaped measurement pattern and a pair of box-shaped or slit-shaped auxiliary patterns provided inside and outside the measurement pattern, respectively.