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1. 发明授权

US08031426B2 Thin-film magnetic head having microwave magnetic exciting function and magnetic recording and reproducing apparatus 有权
标题翻译：具有微波磁激励功能的薄膜磁头和磁记录和重放装置
公开(公告)号：US08031426B2
公开(公告)日：2011-10-04
申请号：US12700278
申请日：2010-02-04
申请人： Hiroshi Ikeda , Sayaka Hattori , Kiyoshi Noguchi
发明人： Hiroshi Ikeda , Sayaka Hattori , Kiyoshi Noguchi
IPC分类号： G11B5/02 , G11B5/127
CPC分类号： G11B5/314 , G11B2005/001 , G11B2005/0024
摘要： A thin-film magnetic head having microwave magnetic exciting function, includes a write magnetic field production unit for producing, in response to a write signal, a write magnetic field to be applied into a magnetic recording medium, a line conductor of a microwave radiator of a plane-structure type, formed independent from the write magnetic field production means, for radiating, by feeding there through a microwave excitation current, a microwave band resonance magnetic field with a frequency equal to or in a range near a ferromagnetic resonance frequency FR of the magnetic recording medium, and two conductors separated from the line conductor in a direction perpendicular to a track-width direction of the thin-film magnetic head and parallel to an ABS of the thin-film magnetic head. The microwave radiator is an inverted micro strip waveguide having the line conductor and a ground conductor constituted by the magnetic recording medium. A section of the line conductor, perpendicular to the track-width direction has a rectangular shape. An aspect ratio B/A is within a region from 0.15 to 1.2 or within a region of 7 or more, where A is a length in a lateral direction of the line conductor, which is in parallel with the ABS and perpendicular to the track-width direction, and B is a length in a longitudinal direction of the line conductor, which is perpendicular to the air bearing surface.
摘要翻译：一种具有微波磁激励功能的薄膜磁头，包括写入磁场产生单元，用于响应于写入信号，产生要施加到磁记录介质中的写入磁场，微波辐射器的线路导体平面结构类型，独立于写入磁场产生装置形成，用于通过微波激励电流向其馈送频率等于或接近铁磁谐振频率FR的频率的微波频带共振磁场磁记录介质和两条导体，它们在垂直于薄膜磁头的磁道宽度方向的方向上与线路导体分离，并平行于薄膜磁头的ABS。微波辐射器是具有线路导体和由磁记录介质构成的接地导体的倒置微带波导。垂直于轨道宽度方向的线路导体的一部分具有矩形形状。纵横比B / A在0.15至1.2的范围内或在7或更大的区域内，其中A是线路导体的横向方向上的长度，其与ABS平行并垂直于轨道 - 宽度方向，B是与空气轴承面垂直的线状导体的长度方向的长度。

2. 发明申请

US20100208379A1 Thin-Film Magnetic Head Having Microwave Magnetic Exciting Function and Magnetic Recording and Reproducing Apparatus 有权
标题翻译：具有微波激磁功能和磁记录和再现装置的薄膜磁头
公开(公告)号：US20100208379A1
公开(公告)日：2010-08-19
申请号：US12700278
申请日：2010-02-04
申请人： Hiroshi Ikeda , Sayaka Hattori , Kiyoshi Noguchi
发明人： Hiroshi Ikeda , Sayaka Hattori , Kiyoshi Noguchi
IPC分类号： G11B5/02
CPC分类号： G11B5/314 , G11B2005/001 , G11B2005/0024
摘要： A thin-film magnetic head having microwave magnetic exciting function, includes a write magnetic field production unit for producing, in response to a write signal, a write magnetic field to be applied into a magnetic recording medium, a line conductor of a microwave radiator of a plane-structure type, formed independent from the write magnetic field production means, for radiating, by feeding there through a microwave excitation current, a microwave band resonance magnetic field with a frequency equal to or in a range near a ferromagnetic resonance frequency FR of the magnetic recording medium, and two conductors separated from the line conductor in a direction perpendicular to a track-width direction of the thin-film magnetic head and parallel to an ABS of the thin-film magnetic head. The microwave radiator is an inverted micro strip waveguide having the line conductor and a ground conductor constituted by the magnetic recording medium. A section of the line conductor, perpendicular to the track-width direction has a rectangular shape. An aspect ratio B/A is within a region from 0.15 to 1.2 or within a region of 7 or more, where A is a length in a lateral direction of the line conductor, which is in parallel with the ABS and perpendicular to the track-width direction, and B is a length in a longitudinal direction of the line conductor, which is perpendicular to the air bearing surface.
摘要翻译：一种具有微波磁激励功能的薄膜磁头，包括写入磁场产生单元，用于响应于写入信号，产生要施加到磁记录介质中的写入磁场，微波辐射器的线路导体平面结构类型，独立于写入磁场产生装置形成，用于通过微波激励电流向其馈送频率等于或接近铁磁谐振频率FR的频率的微波频带共振磁场磁记录介质和两条导体，它们在垂直于薄膜磁头的磁道宽度方向的方向上与线路导体分离，并平行于薄膜磁头的ABS。微波辐射器是具有线路导体和由磁记录介质构成的接地导体的倒置微带波导。垂直于轨道宽度方向的线路导体的一部分具有矩形形状。纵横比B / A在0.15至1.2的范围内或在7或更大的区域内，其中A是线路导体的横向方向上的长度，其与ABS平行并垂直于轨道 - 宽度方向，B是与空气轴承面垂直的线状导体的长度方向的长度。

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