Dinesh Kumar Email & Phone Number

Expertise in RF & Microwave circuits and design. Experience in designing and fabricating RF TTC Transponder for satellite application in different frequency band like S.C X and Ku. Its main function - 1. Satellite receive command pulse from ground station 2, Send telemetry information from satellite to ground station. 3. Tracking satellite. Tracking means to know satellite position, velocity and distance from ground station. Testing is rigorous to get reliability of the system around 99.99% and to ensure satellite's life to be minimum of 15 years. Designed & delivered S-Band TTC Transponder for Deep Space Mission like Chandrayaan 1 & 2 and MARS. Designed & delivered more than 60 number of TTC Transponders for IRS (polar satellite) and Geosat (Geo- stationary) series of satellites. •Expert in Designing Quadrature Hybrid from low to high frequency, RF amplifier using GaAs FET and BJT, carrier generation using PLL by peregrine chip, frequency multiplier using SRD device, Arduino & Nodemcu programming using different sensor for making smart IOT based system, designing S-Band, C-Band and X-Band Telemetry Transmitter for satellite, Analog Phase Modulator design microstrip based band pass filter etc.Innovative Concept on Satellite TTC Transponder :-* Analysis of maximum modulation index (PM) using multiple modulating signal in TM Tx in downlink so that Ground station can be capable of tracking satellite.* Analysis on differences of testing parameters deviation of TTC Transponder during hot and cold & Thermovac testing and its solution.* Analysis on TM Tx performance during Vibration test. We analyse using signal to noise ratio degradation & poor distortion level of downlink RF. This performance is correlated while satellite is at launch pad & also what happens when satellite in transfer orbit? * Analysis of dynamic range performance of TTC Rx & Tx for polar satellite over complete angle of elevation.* Analysis of Carrier tracking margin variation of Ground station for polar satellites from 2 degree elevation to 90 degree elevation.* Analysis on Tx modulated power of PSK signal for maintaining BER performance for polar satellite over all angle of elevation with margin. Also we do for analog signal modulation to maintain proper SNR.* Use unique technique for modulation of analog & digital signal simultaneously using the same modulator.* Mixing RF design with Arduino & Nodemcu to make smart system.* Automated test system design using smart system with many safety features to avoid any failure to ensure high reliability.

Listed skills include C, Hardware, Satellite, C++, and 2 others.