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    • 2. 发明申请
    • Dual Band Stacked Patch Antenna
    • 双频带堆叠贴片天线
    • US20090058731A1
    • 2009-03-05
    • US11847372
    • 2007-08-30
    • Kevin GearyJames H. SchaffnerHui-Pin HsuJoseph S. ColburnHyok J. Song
    • Kevin GearyJames H. SchaffnerHui-Pin HsuJoseph S. ColburnHyok J. Song
    • H01Q9/04
    • H01Q9/0414H01Q5/378
    • One or more of the embodiments of a dual band stacked patch antenna described herein employ an integrated arrangement of a global positioning system (GPS) antenna and a satellite digital audio radio service (SDARS) antenna. The dual band antenna receives right hand circularly polarized GPS signals in a first frequency band, left hand circularly polarized SDARS signals in a second frequency band, and vertical linear polarized SDARS signals in the second band. The dual band antenna includes a ground plane element, an upper radiating element (which is primarily utilized to receive SDARS signals), dielectric material between the ground plane element and the upper radiating element, and a lower radiating element (which is primarily utilized to receive GPS signals) surrounded by the dielectric material. The dual band antenna uses only one conductive signal feed to receive both GPS and SDARS signals.
    • 本文描述的双频带堆叠贴片天线的一个或多个实施例采用全球定位系统(GPS)天线和卫星数字音频无线电服务(SDARS)天线的集成布置。 双频天线接收第一频带中的右手圆偏振GPS信号,第二频带中的左旋圆偏振SDARS信号和第二频带中的垂直线偏振SDARS信号。 双频带天线包括接地平面元件,上辐射元件(其主要用于接收SDARS信号),接地平面元件和上辐射元件之间的介电材料,以及下辐射元件(其主要用于接收 GPS信号)被电介质材料包围。 双频天线只使用一个导通信号馈送来接收GPS和SDARS信号。
    • 3. 发明授权
    • Waveguide assembly for a microwave receiver with electro-optic modulator
    • 用于具有电光调制器的微波接收器的波导组件
    • US08995838B1
    • 2015-03-31
    • US12959287
    • 2010-12-02
    • James H. SchaffnerKevin GearyDaniel Yap
    • James H. SchaffnerKevin GearyDaniel Yap
    • H04B10/2575H01P3/16
    • H01P3/16H01P5/087H01P5/107H01Q13/02H04B10/90H04B2210/006
    • A waveguide assembly for a use with, for example, a microwave receiver. The waveguide assembly includes: a waveguide; a tapered structure disposed within the waveguide, the tapered structure tapering in thickness from a first end with a zero height to a second end where the tapered structure has a height which nearly fills, but does not completely fill, the waveguide, to thereby define a modulator receiving space between the tapered structure and an adjacent wall of said waveguide. The second end of the tapered structure is preferably disposed adjacent an open circuited end of the waveguide. An electro-optic modulator is disposed on a dielectric substrate, the dielectric substrate being disposed at least partially within the modulator receiving space and the electro-optic modulator being disposed so that it is located, in use, at an antinode of a standing wave of the waveguide assembly.
    • 用于与例如微波接收器一起使用的波导组件。 波导组件包括:波导; 布置在波导内的锥形结构,锥形结构从具有零高度的第一端到第二端的厚度渐缩,其中锥形结构具有几乎填充但不完全填充波导的高度,从而限定了 调制器在所述锥形结构和所述波导的相邻壁之间接收空间。 锥形结构的第二端优选地设置在波导的开路端附近。 将电光调制器设置在电介质基片上,电介质基底至少部分地设置在调制器接收空间内,电光调制器被设置为使得它在使用中位于驻波的波腹处 波导组件。
    • 6. 发明授权
    • Optoelectronic modulator and electric-field sensor with multiple optical-waveguide gratings
    • 具有多个光波导光栅的光电调制器和电场传感器
    • US07657132B1
    • 2010-02-02
    • US12141825
    • 2008-06-18
    • Daniel YapDavid L. PersechiniKevin Geary
    • Daniel YapDavid L. PersechiniKevin Geary
    • G02F1/295
    • G02F1/035G02F2201/17G02F2201/30
    • An optoelectronic-RF device has at least one optical modulator/sensor comprising at least two cascaded optical-waveguide gratings and at least one non-grating optical waveguide segment interconnecting the at least two cascaded optical-waveguide gratings, with at least one optical waveguide segment interconnecting the at least two cascaded optical-waveguide gratings via the at least one non-grating optical waveguide segment. An RF waveguide is provided for propagating an RF electric field, the at least one optical modulator/sensor being disposed in and forming a portion of the RF waveguide with light propagating through the cascaded optical-waveguide gratings in a direction that is perpendicular to a direction of propagation of the RF electric field in the RF waveguide.
    • 光电RF器件具有至少一个光调制器/传感器,其包括至少两个级联的光波导光栅和至少一个将至少两个级联光波导光栅互连的至少一个非光栅光波导段与至少一个光波导段 经由所述至少一个非光栅光波导段将所述至少两个级联的光波导光栅互连。 提供RF波导用于传播RF电场,所述至少一个光学调制器/传感器被布置在RF波导的一部分中并且形成RF波导的一部分,光在垂直于方向的方向上传播通过级联的光波导光栅 在RF波导中RF电场的传播。