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    • 4. 发明申请
    • Inverted-F antenna having reinforced fixing structure
    • 倒F天线具有加固固定结构
    • US20050253760A1
    • 2005-11-17
    • US11127226
    • 2005-05-12
    • I-Ru LiuPo-Kang WangHong-Kun Tyan
    • I-Ru LiuPo-Kang WangHong-Kun Tyan
    • H01Q1/24H01Q9/04
    • H01Q9/0421H01Q1/243
    • An inverted-F antenna having a reinforced fixing structure is disclosed for benefiting antenna diversity. The inverted-F antenna is composed of a base board (such as a printed circuit board), a radiator and at least one supporting member each having a beveled fixing foot, wherein the shape of the radiator can be changed in accordance with various bending directions, such as a L shape, a U shape or a Z shape. The reinforced fixing structure of the inverted-F antenna further includes a dielectric material (such as foam adhesive) used for partially filling in the gap between the radiator and the base board, thereby reinforcing the strength of fixing each supporting member to the base board.
    • 公开了一种具有加强固定结构的倒F天线,用于有益于天线分集。 倒F天线由基板(例如印刷电路板),散热器和至少一个支撑构件构成,每个支撑构件具有倾斜的固定脚,其中散热器的形状可以根据各种弯曲方向改变 ,例如L形,U形或Z形。 倒F型天线的加强固定结构还包括用于部分地填充散热器和基板之间的间隙的介电材料(例如泡沫粘合剂),从而增强了将每个支撑构件固定到基板的强度。
    • 6. 发明授权
    • Magnetic write head with thin and thick portions for balancing writability and ate
    • 磁性写头,薄而厚的部分,用于平衡书写和吃
    • US08184399B2
    • 2012-05-22
    • US12924416
    • 2010-09-27
    • Yan WuMoris DovekZhigang BaiCherng-Chyi HanJiun-Ting LeePo-Kang Wang
    • Yan WuMoris DovekZhigang BaiCherng-Chyi HanJiun-Ting LeePo-Kang Wang
    • G11B5/127
    • G11B5/1278G11B5/3116G11B5/3163
    • A perpendicular magnetic recording (PMR) head is fabricated with a tapered main pole having a variable thickness. The tapered portion of the pole is at the ABS tip and it can be formed by bevels at the leading or trailing edges or both. The taper terminates to form a region with a maximum thickness, t1, which extends for a certain distance proximally. Beyond this region of maximum thickness t1, the pole is then reduced to a constant minimum thickness t2. A yoke is attached to this region of constant minimum thickness. This pole design requires less flux because of the thinner region of the pole where it attaches to the yoke, but the thicker region just before the tapered ABS provides additional flux to drive the pole just before the ABS, so that high definition and field gain is achieved, yet fringing is significantly reduced.
    • 制造具有可变厚度的锥形主极的垂直磁记录(PMR)头。 极的锥形部分在ABS尖端处,并且其可以由前缘或后缘处的斜面或两者形成。 锥形终止形成最大厚度的区域t1,其向近处延伸一定距离。 超过该最大厚度的区域t1,然后将极减小到恒定的最小厚度t2。 磁轭连接到恒定最小厚度的区域。 这个极设计需要更少的通量,因为它附着在磁轭上的磁极的较薄区域,而刚好在锥形ABS之前较厚的区域提供额外的磁通来驱动刚好在ABS之前的极点,因此高清晰度和场增益是 实现了,但边缘明显减少。
    • 7. 发明申请
    • Power control of TAMR element during read/write transition
    • 读/写转换期间TAMR元件的功耗控制
    • US20100232050A1
    • 2010-09-16
    • US12381327
    • 2009-03-11
    • Erhard SchreckKowang LiuKouji ShimazawaPo-Kang Wang
    • Erhard SchreckKowang LiuKouji ShimazawaPo-Kang Wang
    • G11B5/02
    • G11B5/314G11B5/6088G11B2005/001G11B2005/0021
    • A slider mounted TAMR (Thermal Assisted Magnetic Recording), DFH (Dynamic Flying Height) type read/write head using optical-laser generated surface plasmons in a small antenna to locally heat a magnetic medium, uses the same optical laser at low power to pre-heat the antenna. Maintaining the antenna at this pre-heated temperature, approximately 50% of its highest temperature during write operations, allows the DFH mechanism sufficient time to compensate for the thermal protrusion of the antenna at that lower temperature, so that thermal protrusion transients are significantly reduced when a writing operation occurs and full laser power is applied. The time constant for antenna protrusion is less than the time constant for DFH fly height compensation, so, without pre-heating, the thermal protrusion of the antenna due to absorption of optical radiation cannot be compensated by the DFH effect.
    • 使用在小天线中使用光学激光产生的表面等离子体激光器来局部加热磁介质的TAMR(热辅助磁记录),DFH(动态飞行高度)型读/写头的滑块,以低功率使用相同的光学激光器 - 加热天线。 将天线维持在该预热温度下,在写入操作期间其最高温度的约50%允许DFH机构有足够的时间来补偿在该较低温度下的天线的热突起,使得热突起瞬变显着降低 发生写入操作并施加全激光功率。 天线突起的时间常数小于DFH飞行高度补偿的时间常数,因此,在没有预热的情况下,由于吸收光辐射而导致的天线热突起不能被DFH效应补偿。
    • 10. 发明授权
    • Reference cell scheme for MRAM
    • MRAM参考单元方案
    • US07499314B2
    • 2009-03-03
    • US12002161
    • 2007-12-14
    • Hsu Kai YangPo-Kang WangXizeng Shi
    • Hsu Kai YangPo-Kang WangXizeng Shi
    • G11C11/00
    • G11C7/14G11C11/16
    • An MRAM reference cell sub-array provides a mid-point reference current to sense amplifiers. The MRAM reference cell sub-array has MRAM cells arranged in rows and columns. Bit lines are associated with each column of the sub-array. A coupling connects the bit lines of pairs of the columns together at a location proximally to the sense amplifiers. The MRAM cells of a first of the pair of columns are programmed to a first magneto-resistive state and the MRAM cells of a second of the pair of columns are programmed to a second magneto-resistive state. When one row of data MRAM cells is selected for reading, a row of paired MRAM reference cells are placed in parallel to generate the mid-point reference current for sensing. The MRAM reference sub-array may be programmed electrically or aided by a magnetic field. A method for verifying programming of the MRAM reference sub-array is discussed.
    • MRAM参考单元子阵列提供了一个中点参考电流来检测放大器。 MRAM参考单元子阵列具有以行和列排列的MRAM单元。 位线与子阵列的每一列相关联。 耦合将位列对的位线连接到读出放大器的近端位置。 一对列中的第一列的MRAM单元被编程为第一磁阻状态,并且该对列中的第二对的MRAM单元被编程为第二磁阻状态。 当选择一行数据MRAM单元进行读取时,并行放置一对配对的MRAM参考单元,以生成用于检测的中点参考电流。 MRAM参考子阵列可以被电场编程或由磁场辅助。 讨论了一种用于验证MRAM参考子阵列的编程的方法。