| ONR D&I Electronics Technology Programs |
01-Sep-2008 |
7 pages |
| Authors:
Jeong Moon; HRL LABS LLC MALIBU CA
|
 | Program Status: One of the D&I program goals is to develop greatly improved field-plated MMW GaN HEMT devices with high ft/fmax, which will improve gain/PAE and output power of GaN HEMT MMIC PAs simultaneously. The 6-wafer MMW GaN MMIC lot is competed with the front-side processing and waiting for the back-side processing. |
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| Well Conditioned Formulations for Open Surface Scattering |
Aug-2008 |
59 pages |
| Authors:
John J Ottusch; John L Visher; HRL LABS LLC MALIBU CA
|
| The electric field integral equation (EFIE) is a first-kind integral equation formulation that is used to solve a wide variety of electromagnetic scattering problems in the frequency domain. It is the only integral equation that can be applied to both open and closed targets. It is also a poorly conditioned integral equation, which means that solving it using iterative solution methods is generally impractical because the iteration count is uncontrollable ... |
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| Scalable Quantum Information Processing and Applications |
19 JAN 2008 |
31 pages |
| Authors:
Richard S. Ross; Mark F. Gyure; Edward T. Croke; Geoffrey D. Simms; Chris Anderson; Robert Kosut; HRL LABS LLC MALIBU CA
|
| The main goal of this program was to design fabricate and test a semiconductor device capable of demonstrating the fundamental physics required for the realization of a spin-coherent single photon transmitter/receiver system. These requirements included careful tailoring of the g factor for conduction band electrons in the InGaAs/InP materials system and the confinement detection and manipulation of single electrons under lithographically defined gates In this final report we will describe ... |
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| Impact of Magneto-Electric Materials and Devices on Tactical Radio (and Radar) |
APR 2007 |
20 pages |
| Authors:
Jennifer Zinck; Christopher Henry; Deborah Kirby; HRL LABS LLC MALIBU CA
|
| The interest in incorporating ME materials in electronic devices has been reinvigorated by the promising electric-field based control of magnetization or magnetization-based control of polarization in monolithic materials. Primary screening of ME monolithic materials based on their ferroelectric and magnetic ordering temperatures indicate they are not ready for application in devices and require further investment. Thus attention turned toward composite-based materials that magnetoelectrically couple through a strain field, which have ... |
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| Visualization for Insight into the Overall NAS (Vision) |
JAN 2006 |
49 pages |
| Authors:
HRL LABS LLC MALIBU CA
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| High Cooling Power Density of SiGe/Si Superlattice Microcoolers |
2006 |
7 pages |
| Authors:
Gehong Zeng; Xiaofeng Fan; Chris Labounty; John E. Bowers; Edward Croke; James Christofferson; Daryoosh Vashaee; Yan Zhang; Ali Shakeouri; HRL LABS LLC MALIBU CA
|
| Fabrication and characterization of SiGe/Si superlattice microcoolers integrated with thin film resistors are described. Superlattice structures were used to enhance the device performance by reducing the thermal conductivity, and by providing selective emission of hot carriers through thermionic emission. Thin film metal resistors were integrated on top of the cooler devices and they were used as heat load for cooling power density measurement. Various device sizes were characterized. Net cooling ... |
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| Wireless Network Emulation System (WiNE) |
30 MAR 2005 |
14 pages |
| Authors:
Gavin Holland; HRL LABS LLC MALIBU CA
|
| Costly decisions about which wireless networking technologies to develop are currently being based largely on results from high-level simulation tools. The FCS-C program, for instance, used high-level simulation tools to select the network and radio software for final development and demonstration. To mitigate risk, there needs to be lab-based tools that provide more accurate assessment than simulation but at far less cost than field testing. Our approach to this problem ... |
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| Automated Design Tools for Integrated Mixed-Signal Microsystems (NeoCAD) |
FEB 2005 |
138 pages |
| Authors:
P. Petre; J. Visher; R. Shringarpure; F. Valley; M. Swaminathan; HRL LABS LLC MALIBU CA
|
| Automated design tools and integrated design flow methodologies were developed that demonstrated more than an order- of-magnitude reduction in cycle time and cost for mixed signal (digital/analoglRF) and mixed electronic-photonic microsystems, such as high-clock-rate and wide-dynamic-range Analog-to-Digital (AID) converters, These tools and methodologies combined several innovative synthesis, simulation, and optimization techniques, including a fast time-domain circuit simulation method, Model Order Reduction (MOR) tools, system-level, mixed-signal circuit synthesis and optimization tools, ... |
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| MEMS-Based Quartz Oscillators and Filters for On-Chip Integration |
Jan 2005 |
7 pages |
| Authors:
R L Kubena; F P Stratton; D T Chang; R J Joyce; T Y Hsu; M K Lim; R T M'Closkey; HRL LABS LLC MALIBU CA
|
| We report on the development of a new microelectronic mechanical system (MEMS)-based quartz resonator technology that allows for the processing and integration of VHF to UHF high-Q oscillators and filters with high-speed silicon or III-V electronics. This paper describes the first demonstration of prototype oscillators and filters using this newly developed technology. We present impedance, Q, and temperature sensitivity data of UHF resonators along with phase noise and Allan deviation ... |
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| Photonic Analog-to-Digital Conversion Technology |
DEC 2004 |
106 pages |
| Authors:
W. Ng; L. Lu; D. Yap; W. Bridges; M. Mokhtari; HRL LABS LLC MALIBU CA
|
| This report documents the work undertaken by HRL Laboratories, LLC and its subcontractors, California Institute of Technology and Raytheon Electronics Systems, on the development of multi-GHz photonic analog-to-digital (A/D) conversion technologies (PACT). Using an electro-optic modulator, the analog-input to the A/D converter was impressed (i.e. photonically sampled) on a train of low-jitter picosecond pulses (wavelength - 1540 rim) generated by a mode-locked Er-fiber laser. After photodetection, the electrical outputs of ... |
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| Theoretic Based Performance Analysis of Distributed Sensor Network |
OCT 2003 |
40 pages |
| Authors:
Shubha Kadambe; Cindy Daniell; HRL LABS LLC MALIBU CA
|
| Spatially distributed networks of inexpensive small and smart nodes, with multiple onboard sensors is an important class of emerging networked systems for various applications. Since this network of sensors has to operate efficiently in adverse environments, it is important that these sensors process information efficiently and share information such that the decision accuracy is improved. One way to address this problem is to measure the value of information obtained from ... |
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| Advanced High Electron Mobility Transistor (HEMT) Monolithic Millimeter- Wave Integrated Circuit (MMIC) Circuits for Millimeter- and Submillimeter-Wave Power Sources |
MAY 2002 |
7 pages |
| Authors:
Lorene Samoska; Alejandro Peralta; HRL LABS LLC MALIBU CA
|
| This paper focuses on InP-based, HEMT Monolithic Millimeter-wave Integrated Circuit (MMIC) power amplifiers for applications to heterodyne receivers, transmitters, and communication circuits. Recently, JPL has developed several HEMT MMIC circuits using HRL Laboratories' 0.1 micrometer InP HEMT technology with unprecedented high frequency performance and output power. Results include an 80 OHz bandwidth power amplifier to 145 GHz, a 15-25 mW amplifier to 170 GHz and a HEMT active doubler to ... |
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| Sb-Terminated InAs(OO1)-(2x4) and (2x8) Studied Using Scanning Tunneling Microscopy and ab initio Density Functional Theory |
JAN 2002 |
6 pages |
| Authors:
William Barvosa-Carter; Frank Grosse; James H. Owen; Jennifer J. Zinck; HRL LABS LLC MALIBU CA
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| We have studied the structure of MBE-grown InAs(001)-(2 x 4) surfaces exposed to low Sb2 fluxes by scanning tunneling microscopy (STM) and ab initio density functional theory (DFT). Experimentally, we observe an Sb-terminated alpha 2(2 x 4) phase over a wide range of temperatures (400 - 510 deg C) for low Sb2 flux (< 0.1 ML/s), whereas temperature and As2 flux must be carefully controlled to achieve the same As-terminated ... |
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| Fast Methods of Electromagnetic Modeling of Complex Geometries |
DEC 2001 |
35 pages |
| Authors:
J. J. Ottusch; G. D. Simms; J. L. Visher; S. M. Wandzura; HRL LABS LLC MALIBU CA
|
| This report describes several areas of research that address areas that are important for practical use of modem techniques of computational electromagnetics, with emphasis on methods that, my making code more robust, will reduce the need for human attention. This include low frequency fast multipole methods, appropriate discretization to efficiently model charge and current distribution near geometric singularities. new, more efficient quadrature rules, and a system to automate the patch ... |
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| Heteroepitaxy on Compliant Substrates for Vertical and Horizontal Integration of Multi-Functional Devices |
10 OCT 2001 |
49 pages |
| Authors:
G. L. Olson; J. A. Roth; T. J. de Lyon; J. E. Jensen; J. S. Speck; HRL LABS LLC MALIBU CA
|
| This report presents the results of research on compliant substrate behavior in III-V semiconductors grown by molecular beam epitaxy (MBE) on thin (50-80A) InGaAs layers on GaAs, and in II-VI semiconductors (HgCdTe, CdTe, ZnTe) grown on thin Si(211) layers on Si(100). A comprehensive experimental study was conducted utilizing spectroscopic ellipsometry, transmission electron microscopy, and atomic force microscopy at various stages in the fabrication and processing of the compliant layers and ... |
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| High Birefringence Liquid Crystals for Laser Beam Steering |
23 JUL 2001 |
7 pages |
| Authors:
Shin-Tson Wu; HRL LABS LLC MALIBU CA
|
| High birefringence and low viscosity liquid crystals are crucial for improving the response time of an agile laser beam steering device. Nematic liquid crystals with birefringence greater than 0.4, low absorption and good photo and thermal stability are investigated. |
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| High Performance Liquid Crystals for Laser Communications |
02 JUL 2001 |
15 pages |
| Authors:
Shin-Tson Wu; HRL LABS LLC MALIBU CA
|
| During the course of this contract, we have developed several new olefin diphenyl-diacetylene and bistolane liquid crystals for laser communications. The olefin diphenyl-diacetylenes, synthesized by Mary Neubert's group of Kent State University, exhibit a much wider pnematic range than the corresponding alkyl homologues. The high clearing point of the olefin compounds helps to increase the birefringence and figure-of-merit through higher order parameter. A sample eutectic mixture consisting of such olefin ... |
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| Optical Wavelength Multiplexing Technologies for Information-Rich, Networked Platforms |
18 Apr 2000 |
5 pages |
| Authors:
Daniel Yap; Willie Ng; Greg Tangonan; HRL LABS LLC MALIBU CA
|
| INTER-PLATFORM COMMUNICATION: * SEAMLESS CARRIER-FORM TRANSDUCTION (OPTICAL FIBER, FREE-SPACE OPTICAL, WIRELESS MICROWAVE) * DIRECT CONVERSION BETWEEN WIRELESS, OPTICAL-FIBER AND FREE-SPACE OPTICAL CARRIERS (WITHOUT CONVERTING BACK TO BASEBAND SIGNAL) * COMBINED USE OF TIME MULTIPLEXING AND FREQUENCY MULTIPLEXING * WAVELENGTH ROUTING (WAVELENGTH TRANSLATION) ALLOWS SEAMLESS CONVERSION BETWEEN OPTICAL FIBER NETWORK AND FREE-SPACE OPTICAL NETWORK INTRA-PLATFORM SIGNAL DISTRIBUTION, SWITCHING AND ROUTING: - OF BOTH ANALOG AND DIGITAL DATA - FOR VARIETY OF ... |
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| GaN-Based 100 Watt Microwave Power Hot Electron MODFET |
30 SEP 1999 |
63 pages |
| Authors:
David E. Grider; HRL LABS LLC MALIBU CA
|
| Under this program, the HRL/UCSB team has demonstrated GaN MODFET devices with microwave power densities at X-Band and K-Band frequencies that are several times larger than conventional solid state microwave power devices such as GaAs based PHEMTs. The results of this program form the basic foundation for the development of a GaN MODFET technology capable of revolutionizing the field of microwave power electronics. The HRL/UCSB team has developed the essential ... |
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| Audio Signal Separation Using Blind Source Separation Techniques |
24 Aug 1999 |
4 pages |
| Authors:
Shubha Kadambe; Yuri Owechko; HRL LABS LLC MALIBU CA
|
| Techniques developed so far are based on: 1. Constant modulus algorithm (CMA), Independent component analysis (ICA), polyspectra and time-frequency. Examples of ICA (Frequency domain - JADE ICA): JADE-ICA on Each Frequency Bin With Port Deswapping and Normalization, Spectrograms of Speech Signal Mixtures, ICA-Separated Frequency Components, Inverse Spectrogram Transform, Separated Speech Signals, 16-tap random channel and cross-channel filters and mixing matrix. |
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| Integral Equations and Discretizations for Waveguide Apertures |
NOV 1998 |
430 pages |
| Authors:
John J. Ottusch; George C. Valley; Stephen Wandzura; HRL LABS LLC MALIBU CA
|
| This report presents integral equations and their discretizations for calculating the fields radiated from arbitrarily shaped antennas fed by cylindrical waveguides of arbitrary cross sections. We give results for scalar fields in two dimensions with Dirichiet and Neumann boundary conditions and for (vector) electric and magnetic fields in three dimensions. The discretized forms of the equations are cast in identical format for all four cases. Feed modes ... |
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| Real-Time Monitoring and Control of HgCdTe MBE Using an Integrated Multi-Sensor System |
AUG 1998 |
|
| Authors:
G. L. Olson; J. A. Roth; P. D. Brewer; R. D. Rajavel; J. E. Jensen; HRL LABS LLC MALIBU CA
|
 | We present recent progress on the use of an integrated real-time sensing and control system for monitoring and controlling substrate temperature, layer composition, and effusion cell flux during MBE growth of HgCdTe epilayers for advanced IR detectors. Substrate temperature is measured and controlled in real-time using absorption-edge spectroscopy (ABES). This allows the substrate temperature to be maintained at +/-1.5 deg C from the desired setpoint, even during actuation of effusion ... |
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| Electro-Optics Based on Novel Materials Modifications |
JUN 1998 |
42 pages |
| Authors:
R. G. Wilson; R. N. Schwartz; HRL LABS LLC MALIBU CA
|
| Aims or goals of this work included growth, doping and characterization of new materials of interest to ARO for electro-optics and electronics applications within the DoD, often involving support for university research through collaborative programs initiated by Dr. John Zavada. A concomitant goal was the publication of papers that describe the results of this work and these collaborations. Results and significance of this work are described in the publications listed ... |
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Reports by Corporate Author
