Latest Space News
Fri, 24 May 2013 08:42:00 +0100
The Ring Nebula's distinctive shape makes it a popular illustration for astronomy books. But new observations by NASA's Hubble Space Telescope of the glowing gas shroud around an old, dying, sun-like star reveal a new twist.
"The nebula is not like a bagel, but rather, it's like a jelly doughnut, because it's filled with material in the middle," said C. Robert O'Dell of Vanderbilt University in Nashville, Tenn. He leads a research team that used Hubble and se...
Fri, 24 May 2013 08:38:00 +0100
Soyuz Flight VS05
The Soyuz launcher for Arianespace’s next medium-lift mission is rapidly taking shape at French Guiana as this vehicle undergoes its build-up for a June flight with the first four satellites in O3b Networks’ connectivity constellation.
During activity this week in the Spaceport’s MIK launcher integration building for Soyuz, the vehicle’s core second stage was completed with the mating of its upper and lower sections. Today, team members ...
Fri, 24 May 2013 02:40:00 +0100
QUITO -
A tiny Ecuadoran satellite that collided in space with the remains of a Soviet rocket survived the crash, but was damaged and is not transmitting, Quito's space agency said Thursday.
Ecuador's space agency EXA had warned on Wednesday that a space fender-bender was likely between its "Pegaso" (Pegasus) nanosatellite and the remains of an S14 rocket launched by the Soviet Union into space in 1985, in the midst of the Cold War.
The agency's director Ronnie Nader sai...
Thu, 23 May 2013 08:20:00 +0100
A rare encounter between two gas-rich galaxies spotted by ESA’s Herschel space observatory indicates a solution to an outstanding problem: how did massive, passive galaxies form in the early Universe?
Most large galaxies fall into one of two major categories: spirals like our own Milky Way that are full of gas and actively forming stars, or gas-poor ellipticals, populated by old cool red stars and showing few signs of ongoing star formation.
It was long assumed that the large el...
Thu, 23 May 2013 08:09:00 +0100
HERNDON, Va. -
The Jet Propulsion Laboratory (JPL) has selected ITT Exelis (NYSE: XLS) to provide maintenance, operations, and engineering services for NASA’s international Deep Space Network (DSN). The subcontract has a base period of performance of five years, with incentive provisions that can extend the contract up to 10 years for a total value of $435 million.
Under the DSN subcontract, Exelis will support an international network of communications complexes that supports interplanetary robot...
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Date Submitted: Last Modified:Job information
Current job: Employment Term: Job location: Date available: Industry: KeywordsCV
SUMMARY
* 25 years experience, in RF-microwave hardware/systems engineering for satellite/wireless communication applications
* Experienced in payload systems engineering for Geo-spacecrafts: develop payload architecture, Payload RF budgets, lead and oversee the procurement, integration and test of satellite communications payload
* Design and analysis of communications systems for satellite and interplanetary applications. Familiar with analyses such as link budgets, gain/loss budgets, noise figure, linearity, spurious, etc.
* Conceive and develop solutions to analytical, design, and test problems that program(s) experience
* Collaborate in preliminary and advanced design studies and prepare portions of satellite payload proposals
* In-depth knowledge of RF product development, from initial design conception to qualification / production.
* Skilled in collaborating with suppliers, internal engineers, and production management. Strong hands-on leader recognized for attention to details, organizational skills, innovative problem solving, and product and project success. Experienced in effectively working in a cross-functional or matrix kind of team
* Hands on experience in evaluating RF functional blocks. Extensive Laboratory testing, optimization and troubleshooting with hands on experience with Spectrum Analyzers, Network Analyzers, Power meter, VSA etc.
* Extensive experience as engineering coordinator for large volume (200,000 / year) production of Radio assy's.
* Experience in the development of RF Transmit section for GSM Handset using GaAs HBT PA's.
* Communicate circuit and system designs, goals, and performance through documentation and presentations.
* Development experience in GaAsFET Power Amplifiers in the Satcom Bands. Well versed with various types of active/ passive microwave components. Experience with microstrip circuit design and simulation tools like ADS. Experience in layout, impedance matching, and optimization, troubleshooting of RF circuits
* Generate component / subsystem level specifications and verification test plans at the module/subsystem level. Familiar with Hardware Configuration Management process and practices
EDUCATION
MSEE (Wireless Communications), Johns Hopkins University, Baltimore MD. 2002
BS in Electronics & Communication Engineering, Coimbatore Institute of Technology, India, 1987
TOOLS: Microwave CAD software - HP ADS, TSpice, MW Office.Familiar with Mathcad, Visio, Matlab; Extensive use of MS Excel as a tool for organizing, documenting and presenting the RF test data
PROFESSIONAL EXPERIENCE
September 2010 to present &: Senior Principal RF Engineer, Orbital Sciences Corporation Dulles VA
June 2006 to April 2009
* Payload RF systems lead for Geo satellite programs for customers like Measat, Azerspace, SES & Optus
* Develop RF system performance requirements and flow down to detailed component specifications
* Evaluate and assign applicable units properly to ensure best system performance of the satellite payload.
* Lead and oversee the mechanical and electrical design, integration, test, and in-orbit checkout of satellite communication subsystems. Ensure internal coordination among comm. systems engineering, component engineering and Integration/Test engineering
* Perform vendor survey for RF subsystems and support down to selection and contract negotiation. Subcontractor management and manufacturing interface definition including performance specification, interface control drawing, and statement of work generation, as well as continuous technical support throughout the procurement life cycle.
* Write detailed unit-level and spacecraft-level test plans, procedures, and oversee development of automated test scripts to ensure functional testing verifies and validates all subsystem performance requirements
* Track and trend RF subsystem and component performance parameters through spacecraft assembly, integration, environmental and in-orbit test. Review and interpret system level test results to ensure compliance to contract requirement
* Analyze/resolve failures in test and service, sometimes without recourse to intense theoretical studies and tests
* Present effectively at customer design reviews such as PDR, CDR, PSR etc
* Participate in generating responses to RFP for spacecrafts, with particular reference to Payload RF systems and capacity calculations
April 2009 to September 2010: Lead Communications Engineer, MITRE Corporation, Mclean VA
* Lead the Test and Evaluation of Wideband Microwave Receiver from several vendors, to identify a state of the practice replacement of an existing Receiver forming a part of a large system.
* Link budget study & analysis, develop several Excel based simplified link budgets and urban fading models to aid the Hand Held Terminal feasibility study for a WCDMA based global satellite system.
* Investigate the performance of WiMAX equipment in the presence of simulated Radar interference.
* Extensive Lab test and measurements to characterize the front end inter-modulation performance and filter characteristics of a tactical radio
December 1998 to June 2006: Senior Technical Staff, Hughes Network Systems, Germantown, MD.
* Hardware Project Lead for the development, management and sustaining the production of C, Ku &Ka band RF Transmitters
for broadband satellite systems of HughesNet and Spaceway.
* Management of 1W and 2 W Ku band Radio product development leading to production.
* Oversaw vendor engineering, qualification, and delivery of custom microwave components.
* Supervised and delegated design responsibilities for project team.
* Apprised executive management of product recurring and non-recurring costs and development progress
* Generate specifications at components and sub system level
* Principal interface for project team of mechanical, power supply, ASIC, and production engineers.
* Budget specifications to microwave components from overall system requirements and to assess the impact of specification variations in the signal chain.
* Characterize/qualify RF components like PA, VCO, amplifier MMICs, and co-ordinate with vendors for specification control, multiple sourcing and cost reductions.
* Proto type/troubleshoot VSAT Radios for desired performance. Develop Design Verification and System Test Plans and document the test results. Qualify the radio performance for corner lots of key components.
* Perform design changes due to component failures/obsolescence/alternate vendors and generate engineering change notifications. Qualify any new replacement components and perform regression design verification tests
* Close interaction with the System integration group and provide support to identify and troubleshoot
* Developed test plan and schedule for test engineers/technicians and analyzed test result statistics to ensure high manufacturing yields. Automated standard test routines to reduce product qualification cycle.
* Transitioned product technology into production and provided support, guidance, and leadership as required for product manufacturing and test. Completed cost reduction program that reduced radio recurring cost by 33%.
* Gateway RF Systems and Integration Lead for Thuraya Geo-Mobile system: System level verification and close co ordination with the software and firmware engineers to implement the various power calibration mechanisms properly, and carry out the segment level tests.
September 1996 - December 1998: Lead RF Systems Engineer, Wireless Communication Division
Rockwell Semiconductor Systems (now part of Skyworks), Newport Beach, California.
* Design of the RF Transmit section of the Dual band GSM/DCS and PCS1900 handset reference design from block schematics, feasibility study, and design review up to implementation.
* Characterization of the various vendor parts like PA's, GaAs MMICs for T/R Switching, Dual band Diplexers
* Prototyping of Evaluation boards and work closely with with layout engineers for RF layout
May 1989 to August 1996: RF Program Manager, Center for Development of Telematics, Bangalore, India
Lead Engineer/Program Manager for the development of RF subsystems (Outdoor Units) for VSAT terminals.
* Design and Development of 5W and 10W GaAsFET SSPA's in the C and Ku bands
* Management of RF transceiver development and oversee progress of overall circuit and system development.
* Responsible for installing, testing & commissioning the RF Hardware for the HUB station
October 1987 to May 1989: RF Engineer, Indian Space Research Organization, Ahmedabad, India
Fabrication, characterization, testing, optimization and space qualification of C Band and Ext-C Band GaAsFET Power Amplifiers (SSPA's), for the INSAT-2 Satellite Communication Payload.
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