- Bringing up and debugging 802.11ax WLAN chip with focus on PHY.- Joint debugging and analyzing performance issues with software and microcode teams.- Performance (throughput) tuning in OTA and cabled configurations.

- Managed the entire engineering team covering wireless system design, IoT module design, software design, module and chip tests.- Designed the architecture of our next generation multi-band multi-standard chip and worked on the road-map, feature set definition of chip and module development.- Worked on new RF system and block level specifications for next SoC.- Developed characterization software for RF system and correlated the measured RF parameters with system performance.- Developed DC offset calibration algorithm that can be used in the field without requiring the use of shield-boxes.- Developed new algorithm to optimize the PHY settings autonomously in the field.- Tuned and debugged PHY for 802.11b/g/n transceiver. Re-configured signal detection and AGC of the existing PHY that improved the performance and reliability significantly.- Worked on new signal processing blocks to be implemented in next SoC re-spin to improve performance and yield.- Brought-up and tuned PHY for 802.15.4 transceiver, configured and optimized RF front-end and digital front-end.- Improved chip and module test procedure and algorithms to reduce test time and to improve product yield from lower 80% to above 99%.- Developed and improved test systems for module production and brought up the test systems in factory.- Developed new WLAN IoT modules and improved existing modules.- Developed and implemented algorithms for system applications etc. e.g., a new algorithm to measure power, frequency, voltage, current and power factor for our smart plug reference design.- Co-developed WLAN throughput test system to evaluate our products and tuned system performance such as throughput, range, etc.- Developed reference designs for customers using our chip-set.- Handled regulatory certifications such as FCC and ETSI for modules. Always set up tests to confirm that the modules would pass lab tests before submitting test samples to labs.- Transferred production to new factory

Qualcomm acquired Atheros in 2011- Worked on a 4G LTE femtocell RF chip, responsible for the receiver RF circuit design specifications.- GNSS/GPS system validations and proposals for new generation RF system designs.- Proposed simple solution to support NextNav system.

uNav was acquired by Atheros in Dec 2007- Provided solutions for GPS/GNSS to co-existence with cellular technologies.- Proposed architecture for easier integration of GPS/GNSS, Bluetooth and WLAN technologies.

- Designed multiple RF architectures for several GNSS/GPS receivers to lower power consumption and cost, provide better flexibility and easier circuit design.- Architecture design included detailed specification on gain, signal amplitude, noise, phase-noise, linearity of each block in the system, also specified test and simulation condition for critical parameters.- Proposed and designed digital front-end such as spur-canceler to improve effective SNR of the signals.- Improved existing designs by modifying individual blocks in SoCs and modules.- Debugged and characterized SoCs.- Coordinated team work across Analog, ASIC and System teams.- Co-designed test boards and development boards, debugged and brought up boards.- Developed algorithms, special test boards and software tools for easy characterization, experimentation with SoC.- Created part of test procedures including test conditions and algorithms for critical RF measurements.- Led and managed several module design projects for mass production. Co-designed and tuned multiple modules and test boards for the SoCs.- Actively involved in on-chip LNA design, etc. Also performed some rework on boards when needed.- Actively participated and contributed in product definition, road map and technical discussions.

Company out of business in Aug 2004- Responsible for developing consumer oriented wireless communication products for OEM companies in China. Managed all product development projects in company.- Designed several Cordless Mice/Keyboards, and developed some WLAN (802.11b) products for Lionda in China.- Determined the modulation scheme, communication protocol, source coding scheme, and algorithms for the Mice/Keyboards.- Developed firmware for cordless mice/keyboards’ transmitters, and critical part of the receivers' firmware, both written in assembly language.- Captured schematics for the designs, gave guidelines for PCB layout, debugged and characterized the designs in the lab.- Managed a team of engineers to develop the products, communicated with clients to convert their requirements into design specs.- Set up the technology road map for the company.

Company out of business in June 2003- Debugged and tuned RF circuits of 3G Mobile chip-set prototypes.

Company shut down in October 2002- Responsible for high-level RF system modeling and analysis.- Determined radio architecture, key performance requirements inside of RFIC based on analysis and simulation and RF-Baseband interface for an 802.11a/b/g WLAN chip-set.- Did extensive study and research on the impact of I/Q imbalance, DC offset, phase noise and clock jitter associated with RFIC, and provided compensations methods in both RF and Baseband.- Worked on signal detection, AGC algorithm, radar detection problems associated with 802.11a/b/g and 802.11h.- Co-designed test boards for validations.- Used Matlab, Aplac and C/C++ for system simulation, LabView for measurement data acquisition.

- Participated in designing PDC standard mobile phones for Japan and WCDMA standard mobile phones for world market.- Determined radio architectures for several different products.- Investigated and implemented High-speed Low-phase-noise frequency synthesizers.- Used Matlab, MathCad, Aplac, ADS, Visual Basic, Visual C++ for design and simulation.- Coordinated team work among multiple international sites – Finland, UK and Japan.- Set up the first RF lab for mobile phone development division in Japan.

- Designed many products such as Low Noise Amplifiers, Hi-Power Amplifiers, Frequency Synthesizers, Frequency Converters, Signal Generators, Receivers, Transmitters, Power Level Meters, High-speed Modem, etc.- Designs covered frequency range from 10MHz through 15GHz, power range up to 400W in RF.- Designed all digital signal processing circuits, control circuits and software/firmware used in these products.- Developed automatic test/calibration software for the above products, and for some of the other products of the company.- Used HP MDS, Altera MaxPlus II for simulation, Visual Basic, Visual C++ for automatic test and data collection, C, Assembly Language for embedded firmware.