• Defined and implemented RF HW architecture based on Qualcomm latest chipsets• Performed RF block level budget analysis to ensure components and subsystem characteristics satisfy the overall system requirement• Led key components selection, evaluation and validation• Led Implementation of Qualcomm-based Envelope Tracking(ET) technology to achieve optimal power efficiency for LTE mobile radio and overcame multiple design issues• Led RF designers and collaborated with… Show more • Defined and implemented RF HW architecture based on Qualcomm latest chipsets• Performed RF block level budget analysis to ensure components and subsystem characteristics satisfy the overall system requirement• Led key components selection, evaluation and validation• Led Implementation of Qualcomm-based Envelope Tracking(ET) technology to achieve optimal power efficiency for LTE mobile radio and overcame multiple design issues• Led RF designers and collaborated with cross-functional team such as RF software and digital design to root cause design issues• Executed schematic capture and RF PCB design • Drafted and assumed full ownership of RF HW/SW interface design (GPIO mapping, control logic definition)• Customized component module design such as triplexer design using discrete duplexer and Rx SAW via ADS circuit simulation, prototyping and on-bench tuning• CDMA prime for the first BlackBerry(9630) with WiFi capability for VZW, responsible for circuit design, tuning, characterization to meet IS95 specification • Implemented receiver and transmitter design including matching circuit design for power amplifier, triplexer, low noise amplifier, bench testing and trouble shoot, recreated and solved numerous RF parametric failures during the design cycle• Conducted RF parametric tests using Spirent Test System and resolved non-compliance issues• Drove yield optimization with NPI (new production introduction) via design optimization and test time reduction• Created technical reports such as design specifications, verification plan, test report• Conducted RF test, calibration, characterization and debug by using Qualcomm tools such as QRCT, QXDM, QSPR• Technical lead and mentored junior designers Show less