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    • 5. 发明授权
    • Frequency selective distributed amplifier
    • 频率选择分布式放大器
    • US06650185B1
    • 2003-11-18
    • US10133829
    • 2002-04-26
    • Robert StengelScott Olson
    • Robert StengelScott Olson
    • H03F360
    • H03F3/607H03F3/605
    • A frequency selective differential amplifier (400) consistent with certain embodiments of the invention has a plurality of N amplifier stages (401, 402, 403 through 404) that collectively drive load (410). The plurality of N amplifier stages (401, 402, 403, . . . , 404) have input nodes and output nodes. A plurality of N−1 output phase shift circuits (421, 422, . . . , 423) connect the output nodes of the plurality of amplifier stages in a manner that causes output signals from the plurality of output nodes to add together for delivery to the load (410), the plurality of output phase shift circuits (421, 422, . . . , 423) have a plurality of phase shifts of &thgr;(f)={&thgr;(f)1,2; &thgr;(f)2,3; . . . ; &thgr;(f)N−2,N−1}. A plurality of N−1 input phase shift circuits (431, 432 through 433) are coupled to the plurality of input nodes and provide input signals thereto. The plurality of input phase shift circuits (431, 432, . . . , 433) have a plurality of phase shifts of &PHgr;(f)={&PHgr;(f)1,2; &PHgr;(f)2,3; . . . ; &PHgr;(f)N−2,N−1}. To achieve the frequency selectivity of the current invention, &thgr;(f) is not equal to &PHgr;(f), so that output signals from the plurality of N amplifier stages (401, 402, 403, . . . , 404) are added with a frequency dependent phase relationship.
    • 与本发明的某些实施例一致的频率选择性差分放大器(400)具有共同驱动负载(410)的多个N个放大器级(401,402,403至404)。 多个N个放大器级(401,402,403,...,404)具有输入节点和输出节点。 多个N-1输出相移电路(421,422 ...,423)以使多个输出节点的输出信号相加的方式连接多个放大器级的输出节点, 多个输出相移电路(421,422 ...,423)中的负载(410)具有θ(f)= {θ(f))1,2的多个相移; theta(f)2,3; 。 。 。 ; theta(f)N-2,N-1}。 多个N-1输入相移电路(431,432至433)耦合到多个输入节点并向其输入信号。 多个输入相移电路(431,432 ...,433)具有Phi(f)= {Phi(f)1,2)的多个相移; Phi(f)2,3; 。 。 。 ; Phi(f)N-2,N-1}。 为了实现本发明的频率选择性,θ(f)不等于Phi(f),使得来自多个N个放大器级(401,402,403,...,404)的输出信号被加上 频率相关关系。
    • 9. 发明授权
    • Semiconductor laser with test pads
    • 带测试垫的半导体激光器
    • US08532156B2
    • 2013-09-10
    • US13231529
    • 2011-09-13
    • Scott Olson
    • Scott Olson
    • H01S3/097G01R31/20G01R31/26
    • G02B6/4274G02B6/43
    • A laser diode includes a junction surface configured to interface with an integrated optics slider. Cathode and anode electrical junctions are disposed on the junction surface. The cathode and anode electrical junctions are configured for electrical and mechanical coupling to the integrated optics slider. At least one test pad is disposed on the junction surface that is physically separate from and electrically coupled to one of the cathode and anode electrical junctions. The test pad is configured to be contacted by a test probe and is not configured for electrical or mechanical coupling to the integrated optics slider.
    • 激光二极管包括被配置为与集成光学滑块相接合的连接表面。 阴极和阳极电接点设置在接合面上。 阴极和阳极电接点被配置用于与集成光学滑块的电和机械耦合。 至少一个测试垫设置在物理上与阴极和阳极电连接之一电耦合的接合面上。 测试垫被配置为由测试探针接触,并且不配置用于与集成光学滑块的电或机械耦合。