Vinyas Mandya Dharmababu

Responsibilities: As part of the consumer MEMS microphones System Engineering the tasks included- • Coordinated product and measurement planning across multiple sites, specializing in MEMS Microphone characterization. • Performing characterization measurements and failure analysis. • Assisted in the development and implementation of tools and processes to streamline measurement workflows and reporting. This role focuses on Infineon XENSI MEMS microphones for consumer applications. The MEMS measurements included: • Frequency response at 93dB SPL, and Corner Freq (LFRO) identification. • Sensitivity at 1kHz. • Noise, Weighted Noise (AWE) and Signal/Noise measurement. • Performed Total Harmonic Distortion (THD) measurements at standard 1kHz and across frequency bands, calculating THD based on harmonics up to the 5th order. • Sensitivity vs ASIC supply voltage measurement. • Power Supply Rejection (PSR) checks with Signal Generators freq 100Hz, while measuring microphone Sensitivity at 1kHz. • Failure Analysis with on a prober to while analysing, current, voltage, and capacitance with HP Agilent 4278A. Performed comprehensive product characterization beyond standard application note requirements, including consumer-specific measurements tailored for microphone placement in various applications. Microphone applications: Active Noise Cancellation (ANC) headphones, camcorders & Smart speakers. Tools and Technologies: Matlab, SCPI (Visa), R&S UPV, APX 525, Keysight Multi-meters & DC power supplies, HP Agilent 4278A.

As an RF LNA Characterization Engineer, I coordinate team activities with a focus on LNA testing and characterization, including S-parameter measurements, noise figure analysis, intermodulation distortion, MIPI verification, and Matching & Optimization. I improve efficiency by developing automation tools using MATLAB, Python, and TIBCO Spotfire, streamlining processes and generating detailed reports. These efforts ensure accurate and timely insights into LNA performance, supporting design enhancements and maintaining product quality. Milestones: • Team Lead & Mentor: Mentored interns while leading an LNA characterization team of 4, with rotational support from 2 additional colleagues during peak workloads. • Collaboration tools: Successfully implemented JIRA and Confluence as collaborative tools, fostering improved communication and project management across teams. • Tool Development: Introduced and contributed to the development of a new measurement automation tool. • MIPI 3.0 Testing: Coordinated and implemented MIPI 3.0 testing procedures, developing and implementing supporting scripts to enhance test efficiency. Tools and Technologies: TIBCO Spotfire (report visualization and report gen tool), Matlab, Python 3, Advanced Design System (ADS) [Basic], SCPI (Visa), MIPI (2.1 & 3.0), Soldering SMD component. LNA Product Frequency Applications: WiFi, IoT, 2G, 3G, LTE, 4G, 5G (upto 20GHz), & GNSS.

Role: Development of tools for running algorithms for RF Front End (RFFE) and or Transceiver timing optimization for cellular Modems and writing Test Automation Scripts for programmable measurement instruments [CMW500, MSO9000 and R&S Spectrum Analyser]. Tools and Technologies: Matlab, Matlab App Designer, SCPI (Visa), LTE, RF Embedded System Validation.

Role: Design and implementation of Matlab based tool for testing of Cellular RF Modems. Tool and Technologies: Matlab, Matlab App Designer, SCPI (Visa), LTE, RF Embedded System Validation.