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1. 发明授权

US5557292A Multiple band folding antenna 失效
标题翻译：多频段折叠天线
公开(公告)号：US5557292A
公开(公告)日：1996-09-17
申请号：US263558
申请日：1994-06-22
申请人： Evert C. Nygren , Peter W. Lord , Vito J. Jakstys , Sina Barkeshli , Levent Ersoy
发明人： Evert C. Nygren , Peter W. Lord , Vito J. Jakstys , Sina Barkeshli , Levent Ersoy
IPC分类号： H01Q15/20 , H01Q1/28 , H01Q13/02 , H01Q19/17 , H01Q19/19 , H01Q21/06 , H01Q21/30 , H01Q25/00 , H01Q19/14
CPC分类号： H01Q13/0275 , H01Q1/288 , H01Q25/007 , Y10S343/02
摘要： An antenna has one feed for an S-band electromagnetic signal, and a second feed constructed as an array of radiators to service two C-band signal channels. A subreflector having a microwave frequency selective surface (FSS) is placed in front of a main reflector. The C-band feed is constructed of an array of square aperture horns joined by separate transmit and receive barline beam-forming networks, and a meanderline polarizer to produce circularly polarized radiation patterns. Tapered ridges extend longitudinally along inner wall surfaces of each of the horns to provide increased bandwidth to the C-band feed. The frequency selective surface is constructed, typically, of a generally planar substrate of material transparent to electromagnetic radiation, and numerous metallic, generally annular, radiating elements, or resonators, arranged on the substrate in an array of repeating nested sets of the radiating elements. The lower frequency S-band feed is located behind and to the side of the subreflector for transmission of radiation via a folded optical path to the main reflector. The C-band feed is located in front of and to the side of the subreflector for transmission of radiation along a straight path through the FSS to the main reflector. The locating of the two feeds to the side of the subreflector permits the subreflector to be stowed by folding down upon the C-band feed, and the main reflector to be stowed by folding down upon both the S-band feed and the stowed subreflector.
摘要翻译：天线具有用于S波段电磁信号的一个馈送，以及构造为用于服务两个C波段信号信道的辐射器阵列的第二馈送。具有微波频率选择表面（FSS）的子反射器放置在主反射器的前面。 C波段馈线由一个由分开的发射和接收条形波束形成网络连接的方形孔径阵列组成，曲折偏振器产生圆偏振辐射图。锥形脊沿每个喇叭的内壁表面纵向延伸，以向C带馈送提供增加的带宽。频率选择表面通常构造为对电磁辐射透明的材料的大体上平面的基底，以及布置在衬底上的多个金属的，大体上环形的辐射元件或谐振器，该辐射元件或谐振器以辐射元件的重复嵌套组的阵列。较低频率的S波段馈送位于子反射器的后面和侧面，用于通过折叠的光路将辐射传输到主反射器。 C带馈送位于副反射器的前面和侧面，用于沿着通过FSS的直线路径将辐射传输到主反射器。将两个进给器定位到副反射器的侧面允许通过向下折叠C形带进给而将副反射器收起，并且通过将S波段进给和收起的副反射器折叠来收起主要反射器。

2. 发明授权

US06434501B1 Automatic network analyzer having noise/NPR test capability 失效
标题翻译：具有噪声/ NPR测试能力的自动网络分析仪
公开(公告)号：US06434501B1
公开(公告)日：2002-08-13
申请号：US09532670
申请日：2000-03-21
申请人： Alan Cherrette , Michael S. Davis , Levent Ersoy , Joel Varney
发明人： Alan Cherrette , Michael S. Davis , Levent Ersoy , Joel Varney
IPC分类号： G01R2300
CPC分类号： G01R27/28 , G01R27/32
摘要： An automatic network analyzer that measures continuous wave radio microwave driven transfer characteristics of nonlinear devices and simultaneously calculates and displays corresponding noise driven transfer characteristics and noise power ratio data. This automatic network analyzer employs software or firmware that uses closed-form equations to exactly calculate noise parameters. This is done in real-time as CW measurements are taken.
摘要翻译：一种自动网络分析仪，用于测量非线性设备的连续波无线电微波驱动传输特性，并同时计算和显示相应的噪声驱动传输特性和噪声功率比数据。该自动网络分析仪采用使用闭式方程来精确计算噪声参数的软件或固件。这是在进行CW测量时实时完成的。

3. 发明授权

US06522306B1 Hybrid horn for dual Ka-band communications 有权
标题翻译：双卡通通信混合喇叭
公开(公告)号：US06522306B1
公开(公告)日：2003-02-18
申请号：US10036347
申请日：2001-10-19
申请人： Rajan P. Parrikar , Levent Ersoy
发明人： Rajan P. Parrikar , Levent Ersoy
IPC分类号： H01Q1300
CPC分类号： H01Q13/0216
摘要： A Ka-band horn for transmitting and receiving information between a ground station and a satelitte includes three sections. The throat segment of the horn is adapted for coupling to a feed and includes circular, alternating grooves and webs that are of a widening type created by linearly increasing the width of the grooves in the direction of the horn's aperture. The throat corrugations are for matching the impedance of adjacent sections of the horn. A middle segment includes an up-angle flare section and a down-angle flare section each having dual depth corrugations that enable the horn to achieve a near-HE11 mode at the aperture of the horn. The final segment of the horn is a truncated, smooth-walled, cone.
摘要翻译：用于在地面站和卫星台之间发送和接收信息的Ka波段喇叭包括三个部分。喇叭的喉部适于联接到进给器，并且包括圆形的，交替的槽和腹板，其是通过沿喇叭孔的方向线性增加槽的宽度而形成的加宽型。喉咙波纹用于匹配喇叭的相邻部分的阻抗。中间段包括上角喇叭形部分和下角喇叭形部分，每个具有双重深度波纹，使得喇叭能够在喇叭的孔处实现接近HE11的模式。喇叭的最后一个部分是一个截头圆滑的圆锥体。

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