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  • 1
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    Control of a GaAs monolithic Ka-band phase shifter using a high-speed optical interconnect (1990)
    In:  Other Sources
    Details
    Publication Date: 2011-12-09
    Description: The use of a high-speed optical interconnect in the control of a Ka-band GaAs monolithic phase shifter is described. A 16-b serial control signal was used to modulate the output of a laser transmitter, and the transmitted optical signal was detected and demultiplexed into 16 parallel electrical outputs using a high-speed hybrid GaAs optoelectronic integrated circuit. Four of the parallel output lines were interfaced to the 4-b phase shifter, and high-speed, optically controlled switching of the phase shifter was observed at clock frequencies to 30 MHz using an interferometric technique.
    Keywords: ELECTRONICS AND ELECTRICAL ENGINEERING
    Type: IEEE Transactions on Microwave Theory and Techniques (ISSN 0018-9480); 38; 686-688
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Mixed application MMIC technologies - Progress in combining RF, digital and photonic circuits (1991)
    In:  Other Sources
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    Publication Date: 2011-08-24
    Description: Approaches for future 'mixed application' monolithic integrated circuits (ICs) employing optical receive/transmit, RF amplification and modulation and digital control functions are discussed. We focus on compatibility of the photonic component fabrication with conventional RF and digital IC technologies. Recent progress at Honeywell in integrating several parts of the desired RF/digital/photonic circuit integration suite required for construction of a future millimeter-wave optically-controlled phased-array element are illustrated.
    Keywords: ELECTRONICS AND ELECTRICAL ENGINEERING
    Type: In: Monolithic microwave integrated circuits for sensors, radar, and communications systems; Proceedings of the Meeting, Orlando, FL, Apr. 2-4, 1991 (A93-25776 09-33); p. 223-230.
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    NASA TECHNICAL REPORTS
  • 3
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    A high-speed GaAs MESFET optical controller (1989)
    In:  Other Sources
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    Publication Date: 2011-08-19
    Description: Optical interconnects are being considered for control signal distribution in phased array antennas. A packaged hybrid GaAs optical controller with a 1:16 demultiplexed output that is suitable for this application is described. The controller, which was fabricated using enhancement/depletion mode MESFET technology, operates at demultiplexer-limited input data rates up to 305 Mb/s and requires less than 200 microW optical input power.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: IEEE Photonics Technology Letters (ISSN 1041-1135); 1; 389-391
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Performance of a 300 Mbps 1:16 serial/parallel optoelectronic receiver module (1990)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Optical interconnects are being considered for the high speed distribution of multiplexed control signals in GaAs monolithic microwave integrated circuit (MMIC) based phased array antennas. The performance of a hybrid GaAs optoelectronic integrated circuit (OEIC) is described, as well as its design and fabrication. The OEIC converts a 16-bit serial optical input to a 16 parallel line electrical output using an on-board 1:16 demultiplexer and operates at data rates as high as 30b Mbps. The performance characteristics and potential applications of the device are presented.
    Keywords: ELECTRONICS AND ELECTRICAL ENGINEERING
    Type: NASA-TM-103110 , E-5434 , NAS 1.15:103110 , Technical Symposium on Optical Engineering and Photonics in Aerospace Sensing; Apr 16, 1990 - Apr 20, 1990; Orlando, FL; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    GaAs circuits for monolithic optical controller (1988)
    In:  Other Sources
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    Publication Date: 2019-07-13
    Description: GaAs circuits for use in a fully monolithic 1 Gb/s optical controller have been developed and tested. The circuits include photodetectors, transimpedance amplifiers and 1:16 demultiplexers that can directly control the phase of MMIC phase shifters. The entire chip contains approximately 300 self-aligned gate E/D-mode MESFETs. The MESFETs have one micron-wide gate and the E-mode FETs typically have transconductance of 200 ms/mm. Results of simulations and tests are reported. Also, the design and layout of the fully monolithic chip is discussed.
    Keywords: ELECTRONICS AND ELECTRICAL ENGINEERING
    Type: Optoelectronic Signal Processing for Phased-Array Antennas; Jan 12, 1988 - Jan 13, 1988; Los Angeles, CA; United States
    Format: text
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    NASA TECHNICAL REPORTS
  • 6
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    Performance of a 300 Mbps 1:16 serial/parallel optoelectronic receiver module (1990)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Optical interconnects are being considered for the high speed distribution of multiplexed control signals in GaAs MMIC-based phased array antennas. This paper describes the performance of a hybrid GaAs optoelectronic integrated circuit (OEIC), along with a description of its design and fabrication. The OEIC converts a 16-bit serial optical input to a 16 parallel line electrical output using an on-board 1:16 demultiplexer and operates at data rates as high as 305 Mbps. The performance characteristics as well as potential applications of the device are presented.
    Keywords: ELECTRONICS AND ELECTRICAL ENGINEERING
    Type: Optical and Digital GaAs Technologies for Signal-Processing Applications; Apr 16, 1990 - Apr 18, 1990; Orlando, FL; United States
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    NASA TECHNICAL REPORTS
  • 7
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    Optoelectronic Control Of Phased-Array Antenna (1993)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Radiation patterns switched within microseconds. According to concept, digital beam-steering information destined for number of phased antenna elements transmitted in serial multiplex along optical fiber to optoelectronic integrated circuit (OEIC), demultiplexing information into parallel electronic channels to phase shifters associated with various elements. Because of small distances between elements of such arrays, compactness of optical fibers makes them attractive for distribution of beam-steering (phase-shifting) control signals. Also offers advantages of light weight, low attenuation, mechanical flexibility, large bandwidth, and immunity to both crosstalk and electromagnetic interference.
    Keywords: ELECTRONIC SYSTEMS
    Type: LEW-15187 , NASA Tech Briefs (ISSN 0145-319X); 17; 2; P. 32
    Format: text
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    NASA TECHNICAL REPORTS
  • 8
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    Optical control of an 8-element Ka-band phased array using a high-speed optoelectronic interconnect (1990)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Optical distribution of control signals in electronically steered phased array antennas is being considered. A demonstration experiment is described in which a high speed hybrid GaAs optoelectronic integrated circuit (OEIC) was used to control an eight element phased array antenna. The OEIC, which accepts a serial optical control signal as input and converts it to 16 demultiplexed parallel outputs, was used to control the monolithic GaAs phase shifters of a Ka-band patch panel array antenna. Antenna pattern switching speeds of 2.25 microsec, limited by interface circuitry, were observed.
    Keywords: ELECTRONICS AND ELECTRICAL ENGINEERING
    Type: NASA-TM-102550 , E-5365 , NAS 1.15:102550 , 1990 AP-S International Symposium; May 07, 1990 - May 11, 1990; Dallas, TX; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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