-
公开(公告)号：US5300369A
公开(公告)日：1994-04-05
申请号：US918549
申请日：1992-07-22
申请人： Fred J. Dietrich , John C. Hall
发明人： Fred J. Dietrich , John C. Hall
CPC分类号： H01M10/345 , H01H35/24 , H01M2/34 , H01M2200/20
摘要： An electrochemical energy cell for use in a satellite or other environment where failure of the cell can cause great harm or inconvenience is disclosed in which the cell operates within a sealed pressure vessel in which a gas is maintained under high pressure and which is subject to bombardment by meteorites which can cause holes or cracks in the pressure vessel, thereby rendering the cell incapable of conducting an electric current therethrough, which in turn renders a battery of such cells useless. To prevent this, a pressure sensitive switch is provided in each cell which is connected in a circuit which by-passes the current generating discs of the cell when the switch is closed. The switch is normally maintained open by the pressure within the vessel, and is biased to close in the event that the pressure in the vessel drops below a predetermined minimum, so that the damaged cell will still conduct current therethrough to maintain the integrity of the entire battery.
摘要翻译： 公开了一种在卫星或其他环境中使用的电化学能量电池，其中电池的故障可能引起很大的危害或不便，其中电池在密封的压力容器内操作，其中气体保持在高压下并且受到轰击 由陨石引起压力容器中的孔或裂纹，从而使电池不能通过电流，从而使这种电池的电池无用。 为了防止这种情况，在每个单元中提供压敏开关，每个单元连接在当开关闭合时旁路电池的当前发电盘的电路中。 开关通常由容器内的压力保持打开，并且在容器中的压力下降到预定的最小值以下的情况下被偏压以关闭，使得损坏的电池仍将导通电流通过其中以保持整体的完整性 电池。
-
公开(公告)号：US4903033A
公开(公告)日：1990-02-20
申请号：US176581
申请日：1988-04-01
CPC分类号： H01Q9/0414 , H01Q15/244 , H01Q9/0435 , H01Q9/0457
摘要： A microwave-frequency microstrip antenna (10) simultaneously usable for both transmitting and receiving microwave-frequency signals that have dual orthogonally polarized components. The components may be either linearly or circularly polarized. A radiating patch (26) is mounted on a first dielectric (12). A ground plane (20) abuts the first dielectric (12) and has two elongated coupling apertures (32,31) at right angles to each other. A second dielectric (22) abuts the ground plane (20) and has embedded thereon two substantially identical conductive planar feed networks (52,51) that are disposed at right angles to each other. At least one additional optional dielectric layer (16,18) having a conductive patch (36,34) may be interposed between the first dielectric (12) and the ground plane (20) for purposes of broadening the bandwidth of the antenna (10). A meanderline polarizer (45) or a 3 dB 90.degree. hybrid coupler (40) may be used for converting from linear polarization to circular polarization.
摘要翻译： 一种微波频率微带天线（10），同时可用于发送和接收具有双正交极化分量的微波频率信号。 组件可以是线性的或圆形的极化。 辐射贴片（26）安装在第一电介质（12）上。 接地平面（20）邻接第一电介质（12）并且具有彼此成直角的两个细长联接孔（32,31）。 第二电介质（22）邻接接地平面（20）并且在其上嵌入有彼此成直角设置的两个基本相同的导电平面馈电网络（52,51）。 为了扩大天线（10）的带宽，可以在第一电介质（12）和接地平面（20）之间插入具有导电贴片（36,34）的至少一个额外的可选绝缘层（16,18） 。 曲折偏振器（45）或3dB 90°混合耦合器（40）可用于从线偏振转换为圆偏振。
-
公开(公告)号：US4847625A
公开(公告)日：1989-07-11
申请号：US156259
申请日：1988-02-16
IPC分类号： H01Q9/04
CPC分类号： H01Q9/0457
摘要： A wideband, aperture-coupled microstrip antenna comprising a multilayer structure and including a feed layer, a ground plane including an aperture therethrough, a plurality of tuning layers formed of dielectric material, at least one of the tuning layers including therein a tuning element in the form of an electrically-conductive material, herein called a tuning patch, and final radiating layer including a radiating patch. The multiple tuning layers serve to extend the operational bandwidth of the antenna as compared to other microstrip antennas. Aperture coupling allows realization of the antenna using integrated circuit fabication techniques without the shortcoming of direct physical connections between the feedline and the radiator, and thus providing simple, yet reliable coupling between the feedline and the antenna.
摘要翻译： 一种宽带的孔径耦合微带天线，包括多层结构并且包括馈电层，包括穿过其中的孔的接地平面，由介电材料形成的多个调谐层，所述调谐层中的至少一个在其中包括调谐元件 导电材料的形式，这里称为调谐贴片，以及包括辐射贴片的最终辐射层。 与其他微带天线相比，多个调谐层用于扩展天线的工作带宽。 光圈耦合允许使用集成电路制造技术实现天线，而不会在馈线和辐射器之间直接物理连接的缺点，从而在馈线和天线之间提供简单而可靠的耦合。
-
-
搜索结果
3 条记录 (耗时 0.014 秒)
