Vasikaran Prabhakaran

• Direct involvement in design, development and testing of Wi-Fi, Sub-GHz-RF & PLC.
• Perform device bring-up, validate RF/Wi-Fi (Tx & Rx) key parameters such as P1dB, ACLR; EVM, SEM in conducted mode, perform Multi-Radio Coexistence, Validate across temperature & voltages
• Perform bench level tuning, matching and testing of RF FEM with VNA and find the stability of FEM
• Evaluate, Test and Debug RF/Analog & Mixed Signal module design and evaluate potential interference issues with existing systems, ensuring seamless integration of new RF components.
• Work with cross functional teams, IC manufacturer engineering team, tackle device problems and provide solution to fix the issue.
• Increased project accuracy by developing custom test setups to validate RF component performance under specific operating conditions.

· Understand the cellular modem architecture, Frond-end and shared antenna path for 4G & 5G(FR1) bands, and verify the Tx & Rx path performance through conducted measurement.

· Validate and Qualify RF Tx & Rx (Signaling mode) conducted parameters of 3G, 4G, 5G (FR1) as per 3GPP spec using CMW-500, Anritsu MT8821c, ME7873.

· Perform LTE Carrier Aggregation test, LAA test, Max Input & Interference Test, Temperature test(-50°C to +85°C), Antenna Switch Diversity, Desense on cellular & wifi bands using QC tools.

• Design miniatured and compact RF multiband/single-band antennas using 3D CST tool for all wireless applications starting from 13.56MHz to 7.25GHz
• Developed challenging antenna product with low cost for Sub-GHz, internal/external multiband cellular antenna, Wi-Fi/BT, GNSS/GPS
• Perform gain measurement, create product datasheet, application note, and provide technical support.

• Developed Labview based Test automation tool to validate 70,000 test points in RF functional parameters of Transmit and receive path of TR modules
• Performed RF power and phase normalization across the frequency band to maintain uniform output power & phase across on all seven channels
• Carried out EMI/EMC testing, Thermal cycling, Altitude, Salt, Dust, Thermal Shock, Storage Temperature, Vibration (all 3 Axis) test.

• Led a team of engineers to deliver high-quality products on time and within budget constraints.
• Collaborated with cross-functional teams to ensure seamless integration of new features into existing product lineups.
• Solid understanding in integration of cellular front-end Tx/Rx modules with RF system, impedance matching, load-pull analysis, linearity and stability analysis,
• Perform RF link budget, RF transmitter & receiver chain analysis through EM simulation/Co-Simulation.
• Designed RF Power amplifier, LNA, distributed/lumped filters, impedance matching.
• Perform Wi-Fi & cellular RF Conducted, OTA(TRP/TIS) testing for zebra ET5x series tablets.
• Understanding of EMC/EMI testing for regulatory compliance and certification including SAR and provide power table requirement for Wi-Fi/BT.