公开(公告)号：WO1990007093A1

公开(公告)日：1990-06-28

申请号：PCT/US1989004903

申请日：1989-11-06

Applicant: HUGHES AIRCRAFT COMPANY

Inventor： HUGHES AIRCRAFT COMPANY ,  FRIEDENTHAL, Kenneth, J. ,  DE LA CHAPELLE, Michael ,  HSU, Hui-Pin

IPC: F41G07/32

CPC classification number: F41G7/2266 ,  F41G7/2286 ,  F41G7/2293 ,  F41G7/32

Abstract: A fiber optic radar guided missile system (10) is disclosed which includes a radar receiver (12) disposed in a missile for receiving radar reflections and providing a first optical signal in response thereto. An optical receiver (14) is disposed at a launcher for receiving the first optical signal and for providing a set of electrical signals in response thereto. A fiber optic link (32) is connected between the missile and the launcher for communicating the first optical signal from the radar receiver (12) to the optical receiver (14). In a specific embodiment, the invention (10) includes a first system (12) disposed in a missile for receiving radar reflections which includes only an antenna (16) for receiving radar reflections, a radar seeker (18) for providing a first electrical signal in response to the received radar reflections, and a first fiber optic transmitter (26) for converting the first electrical signal into a first optical signal. An optical receiver (14) is located at a launcher for receiving the first optical signal and for providing a set of electrical signals in response thereto. The optical receiver (14) at the launcher includes a first fiber optic receiver (48) for converting the first optical signal into a second electrical signal and a signal processor (56) for processing the second electrical signal and providing radar output data. A fiber optic link (32) is provided for communicating the first optical signal from the radar receiver (12) to the optical receiver (14) at the launcher and missile commands from the launcher to the missile.

公开(公告)号：WO1988005212A2

公开(公告)日：1988-07-14

申请号：PCT/US1987003209

申请日：1987-12-04

Applicant: HUGHES AIRCRAFT COMPANY

Inventor： HUGHES AIRCRAFT COMPANY ,  DE LA CHAPELLE, Michael ,  HSU, Hui-Pin

IPC: H01L31/10

CPC classification number: H01P1/15 ,  H01L31/108 ,  H04B2210/006

Abstract: The RF/microwave switch/modulator uses an optically controlled diode (20). The reactance of the diode may be varied by varying the illumination intensity. In this fashion, the photodiode in conjunction with an external circuit can switch or modulate a microwave signal by varying the reactance of the diode using a laser light source or the like. The bias voltage may be varied to electronically tune the diode so that the microwave frequency of operation can be electronically controlled.

Abstract translation: RF /微波开关/调制器使用光控二极管（20）。 可以通过改变照明强度来改变二极管的电抗。 以这种方式，与外部电路结合的光电二极管可以通过使用激光光源等改变二极管的电抗来切换或调制微波信号。 可以改变偏置电压以电子调谐二极管，使得微波操作频率可以被电子控制。

公开(公告)号：WO1990007134A1

公开(公告)日：1990-06-28

申请号：PCT/US1989004905

申请日：1989-11-06

Applicant: HUGHES AIRCRAFT COMPANY

Inventor： HUGHES AIRCRAFT COMPANY ,  HSU, Hui-Pin ,  JANG, Soon

IPC: G02B06/255

CPC classification number: G02B6/2558 ,  G02B6/245 ,  G02B6/25 ,  G02B6/255 ,  G02B6/2551 ,  G02B6/2555

Abstract: Two optical fibers (22, 24) are spliced together to form a single spliced optical fiber. The spliced region is uncontaminated by impurities, and has substantially no loss of optical transmission or mechanical strength as compared to the other regions of the fibers. Splicing is accomplished by removal of the buffer coating (16), if any, cleaving of the fibers to be spliced to form facing splicing surfaces, careful precleaning of the cleaved fibers in the region adjacent the splicing surfaces, aligning the fibers using optical transmission as the alignment criterion, fusing the fibers together by preheating the region to be spliced, fusing the region, postannealing the spliced region, carefully postcleaning the spliced region, and recoating the spliced region with a UV curable polymer buffer material, if desired. The heating of the fibers to accomplish the fusion is desirable accomplished by a laser such as a carbon dioxide laser (50).

公开(公告)号：WO1990007236A1

公开(公告)日：1990-06-28

申请号：PCT/US1989004902

申请日：1989-11-06

Applicant: HUGHES AIRCRAFT COMPANY

Inventor： HUGHES AIRCRAFT COMPANY ,  HSU, Hui-Pin

IPC: H04B10/24

CPC classification number: H04B10/25

Abstract: A signal power control system for fiber optic communications systems is disclosed herein. The invention is adapted for use in a system including a transmitter (760), a receiver (440), an optic fiber (160) therebetween, and bobbin means (180) for dispensing the fiber. The invention includes means (480) for detecting the power of the signal delivered to the receiver (440) from the transmitter (760) and for producing a control signal which varies in response to the detected signal power level. Means for providing the control signal to power control means (740) are included. The power control means (740) is responsive to the control signal and operates to vary the output power of the transmitter (760) as necessary to accommodate the dynamic range of the receiver (440).

Abstract translation: 本文公开了一种用于光纤通信系统的信号功率控制系统。 本发明适用于包括发射器（760），接收器（440），其间的光纤（160）和用于分配光纤的线轴装置（180）的系统中的系统。 本发明包括用于检测从发射机（760）传送到接收机（440）的信号的功率的装置（480），并用于产生响应于检测到的信号功率电平而变化的控制信号。 包括用于向控制装置（740）提供控制信号的装置。 功率控制装置（740）响应于控制信号，并且根据需要操作以改变发射器（760）的输出功率以适应接收器（440）的动态范围。

公开(公告)号：WO1988001813A1

公开(公告)日：1988-03-10

申请号：PCT/US1987002006

申请日：1987-08-13

Applicant: HUGHES AIRCRAFT COMPANY

Inventor： HUGHES AIRCRAFT COMPANY ,  GULICK, Jon, J. ,  DE LA CHAPELLE, Michael ,  HSU, Hui-Pin

IPC: H04B09/00

CPC classification number: H04B10/25

Abstract: Impedance matching using lossless elements for optoelectronic components. In one embodiment, a fiber optic link has a laser diode (10) optically coupled by an optical fiber (14) to a photodiode (12). The laser diode is matched to the RF source (16) by a reactive matching circuit (M1). The photodiode is matched to the load (18) by a second reactive matching circuit (M2). Both matching circuits are comprised of lossless elements, as opposed to resistive elements, for achieving a match with minimal RF-to-RF insertion loss.

Abstract translation: 阻抗匹配使用光电元件的无损元件。 在一个实施例中，光纤链路具有通过光纤（14）光耦合到光电二极管（12）的激光二极管（10）。 激光二极管通过电抗匹配电路（M1）与RF源（16）匹配。 光电二极管通过第二电抗匹配电路（M2）与负载（18）匹配。 与电阻元件相反，两个匹配电路都包括无损元件，用于实现与RF-RF插入损耗最小的匹配。

公开(公告)号：WO1990005928A1

公开(公告)日：1990-05-31

申请号：PCT/US1989004374

申请日：1989-10-10

Applicant: HUGHES AIRCRAFT COMPANY

Inventor： HUGHES AIRCRAFT COMPANY ,  HU, William, C. ,  HSU, Hui-Pin

IPC: G02B06/44

CPC classification number: G02B6/4457 ,  B65H55/04

Abstract: A winding assembly has at least two flat coils wound from a single filament and arranged with the coil major side surfaces facing one another, the filament winding in adjacent coils being oppositely directed. Three spaced apart guide plates (26), (28), (30) are axially mounted on a shaft (46) defining first and second winding spaces (32), (34). A first winding arm (40) rotates about the shaft to build up a flat coil in the first winding space and second winding arm (42) rotates about the shaft in the opposite direction to lay down a further flat coil in the second winding space.

Abstract translation: 绕组组件具有至少两个从单个细丝缠绕的扁平线圈，并且将线圈主侧面彼此面对布置，相邻线圈中的细丝缠绕相反。 三个间隔开的引导板（26），（28），（30）轴向地安装在限定第一和第二绕组空间（32），（34）的轴（46）上。 第一卷绕臂（40）围绕轴旋转以在第一卷绕空间中建立平面线圈，并且第二卷绕臂（42）沿相反方向围绕轴旋转以在第二卷绕空间中放置另外的扁平线圈。

公开(公告)号：WO1988005234A1

公开(公告)日：1988-07-14

申请号：PCT/US1987003281

申请日：1987-12-10

Applicant: HUGHES AIRCRAFT COMPANY

Inventor： HUGHES AIRCRAFT COMPANY ,  DE LA CHAPELLE, Michael ,  HSU, Hui-Pin

IPC: H04B09/00

CPC classification number: H01L31/108 ,  H04B10/6932 ,  H04B10/6973 ,  H04J14/02

Abstract: The optical receiver has a photodiode (10) which is reverse biased by a voltage supply (14). The voltage supply provides a variable bias voltage determined by a control unit (16) and the photodiode is matched to the load (22) by an impedance matching circuit (12). The photodiode exhibits large capacitance changes over a range of bias voltages and may be implemented using a Schottky barrier or P N photodiode. By changing the bias voltage, the photodiode capacitance changes to vary the tuned frequency of the receiver. The matching circuit cancels the reactive component to the photodiode impedance and matches the resistive component of the load. The photodiode may have a doping profile in which an intrinsic or lightly doped region of width greater than the average photon penetration depth is located next to the junction. After the intrinsic region, the doping profile may be selected to achieve linear tuning. This doping profile gives linear tuning without sacrificing photodiode conversion efficiency.

Abstract translation: 光接收器具有由电压源（14）反向偏置的光电二极管（10）。 电压源提供由控制单元（16）确定的可变偏置电压，并且光电二极管通过阻抗匹配电路（12）与负载（22）匹配。 光电二极管在偏置电压范围内显示出大的电容变化，并且可以使用肖特基势垒或P + N光电二极管来实现。 通过改变偏置电压，光电二极管电容变化以改变接收机的调谐频率。 匹配电路消除光电二极管阻抗的无功分量，并匹配负载的电阻分量。 光电二极管可以具有掺杂分布，其中宽度大于平均光子穿透深度的本征或轻掺杂区域位于接合点旁边。 在本征区域之后，可以选择掺杂分布以实现线性调谐。 该掺杂曲线提供线性调谐，而不牺牲光电二极管的转换效率。

公开(公告)号：WO1988005215A1

公开(公告)日：1988-07-14

申请号：PCT/US1987003206

申请日：1987-12-04

Applicant: HUGHES AIRCRAFT COMPANY

Inventor： HUGHES AIRCRAFT COMPANY ,  DE LA CHAPELLE, Michael ,  HSU, Hui-Pin ,  LEWIS, Gib, F. ,  MANTELE, John, E.

IPC: H01Q03/26

CPC classification number: H04B10/806 ,  H01Q3/2676

Abstract: The corporate feed network employs light emitting opto-electronic components, such as laser diodes (12), connected together in a string (14) for distributing RF, microwave, MMW, digital signals, and pulse modulated light. Each diode provides two ports or facets which are coupled to optical fibers (16, 18) to connect to an active phased array antenna, for example. The diodes are selected in number and impedance to provide a good wideband impedance match to the RF/microwave/MMW/digital driving source. Multiple series strings of diodes may be employed, connected in parallel for larger corporate feed structures.

公开(公告)号：EP0298098B1

公开(公告)日：1994-03-02

申请号：EP88900731.6

申请日：1987-12-04

Applicant: Hughes Aircraft Company

Inventor： DE LA CHAPELLE, Michael ,  HSU, Hui-Pin

IPC: H01L31/10 ,  H01P1/15

CPC classification number: H04B10/806 ,  H01Q3/2676

Abstract: The RF/microwave switch/modulator uses an optically controlled diode (20). The reactance of the diode may be varied by varying the illumination intensity. In this fashion, the photodiode in conjunction with an external circuit can switch or modulate a microwave signal by varying the reactance of the diode using a laser light source or the like. The bias voltage may be varied to electronically tune the diode so that the microwave frequency of operation can be electronically controlled.

公开(公告)号：EP0396705A1

公开(公告)日：1990-11-14

申请号：EP89912542.0

申请日：1989-10-10

Applicant: HUGHES AIRCRAFT COMPANY

Inventor： HU, William, C. ,  HSU, Hui-Pin

IPC: G02B6 ,  B65H55

CPC classification number: G02B6/4457 ,  B65H55/04

Abstract: Ensemble d'enroulement se composant d'au moins deux bobines plates enroulées à partir d'un filament unique, et dont les surfaces latérales principales se font face, l'enroulement du filament sur les bobines adjacentes étant de sens opposé. Trois plaques de guidage, disposées de manière espacée (26, 28, 30) et montées sur l'axe d'un arbre (46), définissent un premier et un second espace d'enroulement (32, 34). Un premier bras d'enroulement (40) tourne autour de l'arbre pour former une bobine plate dans le premier espace d'enroulement tandis qu'un second bras d'enroulement (42) tourne autour de l'arbre en sens contraire pour former la deuxième bobine plate dans le second espace d'enroulement.