Latest Space News
Tue, 20 Mar 2018 18:20:11 +0000
A letter signed by more than 60 House members calls on the Senate to advance the stalled nomination of fellow congressman Jim Bridenstine to be NASA administrator.
Tue, 20 Mar 2018 17:29:38 +0000
Citing recent reforms that provide more time to orbit a new satellite constellation, satellite broadband-startup OneWeb asked U.S. telecom regulators to nearly triple the size of its authorized low-Earth-orbit constellation.
Tue, 20 Mar 2018 10:53:36 +0000
Citing progress in producing plutonium-238, NASA will allow scientists proposing missions for an upcoming planetary science competition to use nuclear power sources.
Tue, 20 Mar 2018 04:30:11 +0000
Seeking to return a borrowed satellite as soon as possible, Israeli fleet operator Spacecom is very close to purchasing a new satellite dubbed Amos-8, a company official said March 14.
Mon, 19 Mar 2018 17:49:42 +0000
For the space-based infrared SBIRS satellites 5 and 6, the Air Force says the per-unit cost went down 12 percent — from $1.9 billion to $1.6 billion.
Mon, 19 Mar 2018 10:39:02 +0000
Companies that are developing small launch vehicles or who provide rideshare launch services say they expect new Chinese launch vehicles to drive down launch prices, raising concerns among some of unfair competition.
Sun, 18 Mar 2018 09:26:31 +0000
Pentagon official: “There are new threats that the industrial base needs to support. So what does this mean in terms of production capacity?”
Fri, 16 Mar 2018 20:56:55 +0000
Loral Space and Communications wants to move ahead with a “strategic transaction” involving fleet operator Telesat that may spark a legal fight with Telesat’s other major shareholder, a Canadian pension fund.
Fri, 16 Mar 2018 16:49:52 +0000
To prevent collisions in space, nations with advanced orbital monitoring abilities need to share data with each other. Russia, being skilled in space situational awareness (SSA), should be part of the global effort to protect the space environment, experts said March 15 at the Satellite 2018 conference here.
Fri, 16 Mar 2018 13:48:13 +0000
In its budget proposal for the coming year, the U.S. Air Force is trying to send the same message to foreign adversaries and critics at home: the service definitely is not underestimating threats the United States and its allies face in space.
Thu, 15 Mar 2018 23:57:04 +0000
Assistant Secretary of Defense Kenneth Rapuano: “The president is very interested in ensuring that the department is best organized and equipped to achieve our vital missions in space."
Thu, 15 Mar 2018 20:17:02 +0000
The hand-wringing continues at the Pentagon over how to respond to Chinese and Russian missile advances.
Thu, 15 Mar 2018 17:18:23 +0000
With a stopgap spending bill set to expire in just over a week, House and Senate appropriators are continuing to negotiate provisions of an omnibus bill, including funding levels for some NASA programs.
Thu, 15 Mar 2018 15:22:31 +0000
Broadband megaconstellations are expensive propositions, with SpaceX’s Starlink constellation expected to cost $10 billion or more, and OneWeb expecting to spend $3 billion. The actual cost could ultimately be higher.
Thu, 15 Mar 2018 12:52:06 +0000
The introduction of 5G services will bring users globally the ability to have true anytime, anywhere capabilities to support a myriad of user devices and applications never imagined.
Thu, 15 Mar 2018 11:17:36 +0000
The U.S. Senate confirmed Jeffrey DeWit as NASA's new chief financial officer March 14, completing an expedited process starkly different than the one for the agency's next leader.
Thu, 15 Mar 2018 03:13:13 +0000
United Launch Alliance plans to increase its activities in the commercial launch market using both the current Atlas and future Vulcan rockets, while acknowledging that the U.S. government will remain its major customer for the foreseeable future.
Thu, 15 Mar 2018 02:39:35 +0000
Satellite manufacturers say they are trying to protect their component suppliers from the drought of commercial telecom spacecraft that threatens to put such companies out of business.
Wed, 14 Mar 2018 23:34:12 +0000
House Armed Services Committee Chairman Mac Thornberry: "We will not relax our effort on space reforms. This topic is just too important.”
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    Personal information
    Contact information
    Candidate Profile
     Date Submitted:21-09-2017
     Last Modified:26-09-2017 (03:52)
    Job information
     Current job:Scientist
     Employment Term:Permanent
     Job location:Anywhere
     Date available:within 2 months
     Industry:Satellite Manufacturers and Subcontractors, Launch Systems, Consulting/Engineering Services

    Date of Birth, Place              28/05/1974, Kollam, Kerala

    Present location                    Space Application Centre (SAC), ISRO, Ahmedabad, Gujarat       

    Designation                          Senior Scientist, Space Program /Project  Manager / Team Leader, Payload DC Power Systems & RF Power Amplifier Expert

    Research Experience/Area          20 Years. Space, Aerospace and Defense    Commercial / R&D /Critical Technology development Program  

    Design, Qualification and FM manufacturing of Satellite DC Power Systems / RF systems, EPC, SSPA, TWTA Design, Simulation, Development, Testing/Optimizations, Qualification and Flight Model Manufacturing carried out for Communication, Navigation and Remote Sensing Satellites, Deep Space Missions.

    Interesting fields               Space & Defense Program/Project Management, Payload Testing & Characterization, Satellite Power System Design/Simulations, Qualification, FM manufacturing, Advanced GaN based Hi-Rel DC/DC Conversion, ZVS/ZCS PWM & Resonant converters, Digital Control using FPGA/DSP,  Planar/Integrated Magnetics packaging, Circuit Simulation & Analysis, EMI/EMC Control, HMC/Power Hybrids, POL/LDO/MAGAMP designs, Envelope tracking, Flexible SSPA/GaN SSPA, Photovoltaic/Motor Controls, Linear/Nonlinear Robust Control Systems


    Qualification                      Graduate in Engineering Technology, B-Tech [Electronics & Communication, TKMCE, Kollam, Kerala University, India]

    Language Skills                 English, Hindi, Gujarati, Tamil, Malayalam


    1. Associate of COSPAR [International Committee On Space Research, USA]

    2. Member of VEDAS [Vacuum Electronic Device Application Society, India]     

    Publications                       More than 25 Publications/Articles in IEEE and National Journals, Transactions, Conferences, ISRO documents

    Appreciation                      Recipient of ISRO Team Excellence Award 2013 for developing 100W UHF SSPA / 60W C-TWTA


    Work Experience:

    1995-1997 Scientist CEERI, Pilani, Rajasthan

    Worked in CEERI, Pilani (A CSIR Lab, Govt. Of India) as a Scientist during 1995-1997 and associated with Design and Development of Space TWT for ISRO & Military TWT for DRDO.


    1997- 2017 Scientist SAC, ISRO, Ahmedabad

    In SAC/ISRO as Scientist/Engineer, working towards research, design, development and production of satellite equipments: EPC (satellite power supply), SSPA and TWTA (Satellite RF power amplifiers). During the last 20 years, I have worked in the field of EPCs, SSPAs & TWTAs. I have been responsible design and development of a number of State of the art EPCs ranging from very low power to high power & high voltage with advanced topologies. I have also been involved in the indigenous development of Space TWTAs, Space SSPAs.


    Professional Experience

    Space Program Management, Coordinating with Contractors/sub-contractors, Payload subsystems/systems delivery

    Design, Simulation, development, Testing, Qualification and Flight Model manufacturing of Space/Satellite systems

    -Electronic Power Conditioners (EPCs) developed for Low, Medium and High Power (1W to 650W DC) onboard Comm. and Navigation Satellite Payloads

    -High Voltage Electronic Power Conditioners (HV-EPCs) developed for 3KV to 6KV (150W-1500W DC) for TWTAs and Ion Thrusters

    -Indian Space Traveling Wave Tube Amplifiers (TWTAs) developed; Flight Model 60W C-Band TWTAs and Engineering Model 140W Ku-Band TWTAs

    Handled multi-disciplinary science and technologies (Power electronics, Digital, RF& Microwave, UHV/HV systems, Metal-Ceramic technologies, Material science & Particle physics)

    Co-coordination among “Govt.R&D – Academy – Industry” Network projects for various critical technologies development and technological capability building.

    Exposure to versatile work environments viz. Fundamental Research environment, Semi R&D + Production environment, Large scale Industrial Production environment; during execution of various collaborative projects.

    20 years of experience in procurement of Satellite systems (EPCs, Receivers, SSPAs, TWTAs) from global market. Interaction with renowned Space Equipment Manufacturers Boeing/L3Comm USA, TEASAT/Thales/Astrium EADS Germany/France, Alcatel Space Denmark, IR/Infineon, ASP, Germany, MDA, Canada

    Deputed to three renowned space equipment manufacturers (M/s BOEING USA, M/s THALES & M/s ASTRIUM Germany)

    Functioned as Member in several RFP Review Committee, PDR/CDR Committee for Electronic Warfare/Radar Systems of DRDO, Space Systems of ISRO.             


    Equipments Designed, Developed & Qualified for various Space programs of ISRO

    EPC for C, Ku Band LNA, U/D Converter, Receivers, Beacon       3W, 7.5W, 15W DC Power level                   26-42V Bus & 70V Bus designs

    EPC for UHF, L, S, C Band GaAs SSPAs              25W, 50W, 120W, 300W DC Power level                      42V Bus & 70V Bus designs

    EPC for UHF, L, S, C Band GaN SSPAs               125W, 170W, 350W, 650W DC Power level                   26-42V Bus & 70V Bus designs

    HVEPC and C-Band TWTAs                   HV EPC 3KV@150W DC &   60W C-Band TWTA                26-42V Bus & 70V Bus designs

    HV EPC and Ku-Band TWTAs                HV EPC 6KV@300W DC &   140W Ku-Band TWTA             26-42V Bus & 70V Bus designs


    Equipments Design, Development presently carrying out along with ISRO’s Commercial Program Managements

    New generation FPGA Controlled EPC            50-650W EPCs for 15W-250W Flexible GaN SSPAs              26-42V Bus & 70V Bus designs

    New generation eGaN Based EPCs             50-650W Switching GaN EPCs for 15W-250W GaN SSPAs             70V Bus designs

    HV-EPC for Ion Thruster                    1KV-2KV, 500W-1500W DC Power supply               70V Bus designs


    Conversion topologies worked on              Low voltage:  Flyback, Forward, Push-pull, RR/Active Clamp Forward, LLC, ZVT PSFB SR/CDR

                                                                      High Voltage: ZVS/ZCS Push-pull, ZVT PSFB, Series Resonant PSFB, LLC/LCC PSFB


        Control methods worked on                  Analog control:  Voltage Mode, Current Mode, Feed-Forward, Phase shifted PWM, PFM

    Digital Control:  Dynamic Bias, Envelope tracking Flexible DSP/FPGA/ASIC Controlled (DPWM, DPID, DPFM) EPCs for new generation Flexible payloads


        Packaging technologies worked on   Control HMCs, Power Hybrids, Planar Magnetics, Integrated Magnetics, FPGA, ASIC, LTCC

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