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    • 8. 发明申请
    • Feedback and coupling structures and methods
    • 反馈和耦合结构和方法
    • US20050104075A1
    • 2005-05-19
    • US10918463
    • 2004-08-16
    • Allan EvansGene Koch
    • Allan EvansGene Koch
    • H01L33/00H01L51/52H01S5/042H01S5/12H01S5/187H01S5/36H01L29/16H01L27/15
    • H01S5/36H01L51/5262H01L51/5268H01L51/5275H01S3/1686H01S5/0424H01S5/1215H01S5/18H01S5/187H01S5/2004H01S5/2027
    • A light emitting device may include a light emitting layer including an organic semiconductor material with a liquid crystalline structure, one or more feedback structures, and a coupling structure. The one or more feedback structures may cause light emitted by the light emitting layer to be fed back through it along an axis in the plane of the device, thereby promoting the stimulated emission of light in the light emitting layer. The coupling structure couples some fraction of the feedback light out of the device. The coupled light may be emitted along an axis substantially normal to the plane of the device or at predetermined angles. The coupling and feedback structures may have a corrugated structure, a continuous variation of refractive index along an axis in the device plane, a period refractive index, or any combination thereof. The coupling and feedback structures may be separate, share common portion or combined together.
    • 发光器件可以包括包括具有液晶结构的有机半导体材料,一个或多个反馈结构和耦合结构的发光层。 一个或多个反馈结构可以使得发光层发出的光沿着装置的平面中的轴线被反馈通过,由此促进受激发光的发光层中的光。 耦合结构将反馈光的一部分耦合到器件外。 耦合的光可以沿着基本上垂直于装置的平面的轴或者以预定角度发射。 耦合和反馈结构可以具有波纹结构,沿着器件平面中的轴的折射率的连续变化,周期折射率或其任何组合。 耦合和反馈结构可以是分开的,共享公共部分或组合在一起。
    • 10. 发明授权
    • Subscriber frequency control system and method in point-to-multipoint RF communication system
    • 点对多点射频通信系统中的用户频率控制系统和方法
    • US06240556B1
    • 2001-05-29
    • US09089969
    • 1998-06-03
    • Allan EvansHoren Chen
    • Allan EvansHoren Chen
    • H04B140
    • H04N21/4622H04N5/44H04N7/173H04N7/20H04N21/4782
    • A point-to-multipoint star configured terrestrial radio communication system having at least one base station transmitting to and receiving RF communication signals from a plurality of associated subscriber stations in the 0.3-300 GigaHertz (GHz) range. The system includes means for reducing frequency uncertainty, drift or error of the RF transmissions from each of the subscriber stations to the base station. Each subscriber station has a low cost local reference oscillator, and the system incorporates a reference broadcast signal of high frequency precision from the base station and at each subscriber station there is means for measuring frequency error and compensating for frequency drift/error in the low-cost oscillator at the subscriber station. Moreover, the system can provide an estimate obtained from measuring each subscriber frequency drift or error in the base station and relaying the measured error to the corresponding subscriber station to compensate for that subscriber's transmitter's local oscillator be out of frequency.
    • 一种点对多点星形配置的地面无线电通信系统,其具有至少一个基站向0.3-300千兆赫兹(GHz)范围内的多个相关用户站发射和接收RF通信信号。 该系统包括用于减少从每个用户站到基站的RF传输的频率不确定性,漂移或错误的装置。 每个用户站具有低成本的本地参考振荡器,并且该系统包含来自基站的高频精度的参考广播信号,并且在每个用户站处具有用于测量频率误差并补偿低频精度的频率漂移/误差的装置, 用户站的成本振荡器。 此外,系统可以提供从测量基站中的每个用户频率漂移或误差获得的估计,并将测量的误差中继到相应的用户站,以补偿该用户的发射机的本地振荡器超出频率。