• Design and Development of Wireless Embedded System for consumer electronics. It includes Product design, System Architecture (Analog & Digital circuits), Hardware design and development, Component selection and management.• Extensively utilized OrCAD for Schematics and PCB design. Analog circuit simulations were carried out in LTSpice.• Used NXP ARM processor (up-to 400MHz) with SDRAM DDR2 and NAND Flash to design capacitive touch TFT LCD. • Used TI’s Dual Band Wireless MCU (ARM Cortex M-4) for Controller board design which includes Motor driver, accelerometer, IR thermometer, Power section, Battery charger, Reverse polarity protection and other peripherals.• Performed Power board design (Power Budgeting, efficiency calculations, analysis, polarity protection)• Collaborate with Firmware Engineers. • Documention of product requirements, system, functionality, algorithm design and implementation methods.

• Worked on development of next gen. RF Ablation device. Performed schematic design, circuit design reviews, Worst-case circuit simulations, component selections, PCB design reviews, isolation power supply design, power management, and EMC/EMI mitigation techniques. • EMC/EMI and Co-existence Testing for product compliance, regulatory body submissions (FCC, CE, RED) across geographies for existing and new products. • Worked with cross functional teams for 60601-1, 1-2, 2-2 compliance testing, performed RF test setups at internal and external labs, product/system requirement verification, characterization, data processing/analysis and documentation.• Worked on wireless chargers for neuromodulation implantable devices to optimize the Transmitter’s power to meet the FCC SAR limits. Characterized RF coils for matching and integration with existing chargers. • Resolved multiple EMC/EMI testing failures seen on an existing product and newly developed product prototype PCBAs.• Worked with manufacturers for PCB assemblies, system assemblies, cost optimization by component selection, EOL component replacement characterization and verification .

• Component selection for design and development of Analog and Digital circuits of Pacemakers & ICDs. Circuit Simulations, Worst Case circuit analysis and Component equivalent circuit modelling. • Specified components, on board implementation and qualification through characterization and verification. • Design included RF PCBs, modification and enhancement for efficient component characterization on test stations. • Schematic designs, reviewed Implantable PCBs and assemblies impacted by EOL components and BOM management of multiple products. • Performed rigorous analysis on the characterization data to qualify the components for maximum yield in manufacturing. • Performed FMEA, Risk assessment, Impact assessment and Product verification testing for component replacement projects.

• Designed and develop 800W Servo motor controller (DSP+ Power+ Gate drive board) for Military applications. • Designed, developed Embedded Test Equipment which performs automated test on multiple Motor Controller boards. • Projects included Analog and Digital circuit design (DSP, ADCs, DACs, EMI/Filters, Op-amps, ESD), DC-DC power supply design with Inrush, Current sensing, Modulators, Communication, Simulations & Worst-Case analysis.• Created Schematics, PCB design (6-layers) in OrCAD + PCB Fab (BGA, SMT, blind vias, Al2O3 substrates, flex), BOM generation. Selected components performed analysis. Design Control Input/ Output.• Proposed design and modified existing products (DSP Boards/ IO Boards, Gate/ Power drives) for power efficiency, digital signaling compatibility, form factor, cost reduction and performed component reliability (per MIL-HDBK-217F). • Test flow sequence/algorithm for embedded test equipment development.

• Worked with product development team to modify the Transcranial Doppler’s IO Board to include USB 3.0 interface, current limiter circuit and Audio amplifier circuit. • Designed, simulated and analysed current limiter, Audio amplifier and USB power circuits in Altium Designer. • Re-designed the PCB board (6 layers) to include the above-mentioned circuit modules. Performed component selection, BOM/ Schematic documentation and FAB/PCB data generation

• Characterization & System verification of Glucose Sensor Transmitter (2.4GHz) devices. Selected and characterized Li-ion Batteries for C-rates/ E-rates, state of charge, cycle life, float voltage and compatibility. • Reviewed Analog and Digital Circuits/Schematics of Glucose Sensor Recorder & Transmitter devices. Selected and replaced end of life components, performed debugging, Failure/ Root Cause Analysis on failed returned devices.• Performed Worst-Case circuit analysis with selected replacement components for the prototype devices. Wrote the protocols/plans and performed EMC/EMI Compliance testing.• Developed fixtures (PCB & switch matrix), designed Testing method validation (TMV) for verification protocols.• Wrote Python Scripts to simulate the Insulin Pump RF communication (2.4GHz) for Glucose Sensor Transmitters.

• Receiver Calibration and Characterization of the newly developed multi-mode multi-band RF SoC using VSA, Spectrum Analyzer, DMM & LabVIEW. Performed debugging on chip level & wrote delta scripts for registers/ADCs.• Worked closely with the designers to verify the performance of Mixed Signal modules including LDO regulators, local oscillator, PLL, ADCs and Wireless modules in Isolation Chamber. • Reviewed LNA designs in Cadence Virtuoso, circuit simulations using HSPICE & Scripts generated using MATLAB.• Performed data extraction of Dies (ICs) on wafer using ATE (Teradyne UFLEX/ Agilent 93K), Device under test (DUT) on RF Test Bench over PVT and processed/ analyzed large volumes of data using Python scripting, Datapower & Excel.• Created automated test sequences to measure linearity (IP2, IP3), Large signal Noise figure, small signal Noise figure, Phase Noise, Gain, DC bias, LO current, LDO voltage, lock time, S-parameters and presented them in Data reviews with Compliance matrix. • Correlated RF measurements on Test Bench and ATE to facilitate production testing.• Worked with Bench engineers to optimize RF Lab Instruments regarding test time & repeat-ability.

 Embedded Controller development for portable light source (Rover III) used with Medical Endoscopes.• Designed & implemented a DC-DC Buck Power Supply, Microcontroller system using PIC12LF with its peripherals to control illumination of LED array using PWM. (Designed PCBs in Altium13, Programmed in C).• Worked with seniors to modify the legacy circuit boards to interface new components complying with IEC 60601. Performed Product design, BOM, V&V tests. Investigated the returned products for its functionality, created reports, analysis, solutions, FMEA, presented them in meetings & performed component replacements.

1. PATENT: US 7,963,590 B2 (6/21/11): Integrated Features Module Mirror System for Vehicle (Inventor: K. Schmahl).• Developed & delivered an Analog/Embedded electronic system for Integrated Features Module Mirror System which has precise vertical translation of side rear-view mirrors including a Full Duplex Communication System. • Designed PCBs in Altium13 to control & interface actuators (Stepper Motors) with ATmega168 Microcontroller & a wired full duplex Communication System using OpAmps for Voice & Audio amplification. • Realized a wireless 2 channel Communication system using TI CC8521- RF SOC & a DC power regulator Circuit. 2. High Frequency LNA for a custom RF transceiver (RF Circuit design).• Designed & implemented a High frequency, Low Noise Amplifier (LNA) on Microstrip lines, working at frequency range of 1 GHz - 2.5GHz with 10 dB Gain using Motorola MRF901 NPN Silicon IC. • Worked out the designing process, S-parameters, VSWR, stability, Gain, Matching, Pi networks, Linearity IP3, IP2.• Successfully simulated the Amplifier PCB in HFSS, realized it on FR4 board & assembled it with RF transceiver. (PCB designed in Allegro)3. Automation of an Analog Electric Furnace (Thermco MB-80) using LabVIEW. (Product Enhancement)• Designed & tested 2 functional Real Time GUIs in LabVIEW- 2012 to automate the 3- zoned analog electric furnace.• Designed & developed PCBs using (OrCAD) for Embedded circuits to control & interface the 3 analog temp. controllers with 3 thermocouple-temp. sensors in Real Time using FPGA Xilinx Spartan3 & 2X16 LCD. • Performed Verification tests of the upgraded electric furnace. Implemented PID temperature control algorithm.• Designed the system using Wiring harnesses, Thermal management (Heat Sinks) & replaced aged components.

Satellite IR Cameras for Indian Space Research Organization:• Investigated the Impact of Annealing on the Optical, Electrical & Spectral characteristics of InAs/GaAs based Nano-Scale Quantum Dots for INSAT IR cameras.• Designed and verified the Mixed-Signal ASIC using Mentor Graphics tools (ModelSim, Design Architect, ICFlow, Calibre & OVM) for the fabricated InAs/ GaAs based Quantum Dot IR devices (CCD Camera devices).• Developed an AM3354 ARM Cortex Processor Embedded system to retrieve & process the signals from IR devices.

Scientific Testing System:• Scientific Testing System: Successfully Implemented & published a Testing System which measure primary and secondary wave velocity in soil & rock sample using Piezoceramic transducers at freq. 0.5-40KHz, 500KHz-1MHz. • Designed & Developed 4 Embedded circuits to build a Data Acquisition Board using ATmega32 Microcontroller with 4 external ADS805 ADCs, 4 CY7C199 SRAM, counters & a XBee-Pro wireless module for data transfer. • Designed & Developed 8 Analog circuits to interface piezoceramic transducers with signal/ pulse generator using Xr2206 VCO IC, 4 band-pass filters, 4 instrumentation amplifiers, buffers and power supply.• Implemented a Single channel, 100 MSPS Digital Oscilloscope using FPGA (Pluto), RS-232 port & 100MHz Flash DAQ. • 24 PCBs were designed by me in Eagle and OrCAD software. Utilized LabVIEW for signal storage & analysis.• Published & delivered the system as an affordable product (Scientific equipment) for Geo-tech lab, Civil dept.

Analogy of an Electrical power factor monitoring & controlling system. (Analog / Embedded circuit design)- Led a team of 4 to implement a small scale analogy of electrical power factor monitoring & controlling system for Reliance Power (Infrastructure) Ltd. We were able to maintain the power factor of 93% with ±5% fluctuation of the developed system.- The system was designed as a small household electrical unit which regulates the apparent power to increase the efficiency of the Electronic equipments. - It Included Analog / Embedded circuit realization using ATmega168PB Micro-controller, SCADA HMI simulation in MS Visual Studio 2008, signal processing and conditioning in MATLAB/ Simulink.- I developed Embedded Circuit using ATmega168PB Micro-controller with an interface for Single-Phase Bi-Directional Power/ Energy IC CS 5463 for controlling power and 4 ADCs to sense the units. - Programming language used: C++.

Division of Remote Handling & Robotics:• Assisted Proteomics Microarrayer group meet pressing deadlines by completing a GUI for a 3 axis Spot Picker Robot using LABVIEW.• Created 6 Virtual instrument to interface 4 actuators & Sensors with their drivers and PCI using serial communication.• Programmed 3 NI-DAQ boards using NI-DAQmx and tested 3 LabVIEW GUIs for their functionality with the new developed system. • Learned Analog & Embedded circuit designing, Digital Signal Processing using Matlab/ Simulink, CAN bus transmission system and Motion Sensor interfacing for control systems.- IEEE paper link: (ftp://222.18.54.49/Papers/ICRA%202013/media/files/papers_videos/0900.pdf).