SYED ABDULLAH

Organ Perfusion System

• Design board with ARM Cortex-A35 processor with Cortex-M4F, PMIC, Ethernet, LVDS, IMU, Fluid sensors, Wi-Fi, BLE, NVME M.2 SSD, motor driver, optic sub-system, and USB3.0 with PD
• Performed component obsolescence review, and update design with new features
• Led electrical and layout team across NA, ME, and Asia for schematic and layout
• Performed board bring up in lab, debug for hardware/FW issues, co-author test plan and performed electrical testing using oscilloscopes, spectrum analyzers, logic analyzers, and DVMs
• Worked with ME and PCB designers for signal routing, integration, manufacturability, DFM and DFA assessment
• Worked with PM on planning, budgeting, WBS schedule, and coordinates project activities related to electrical design
• Performed USB3.0 signal integrity testing with power delivery
• Collaborated with external and internal suppliers for component procurement

Medical Alert System

• Design electrical/RF electronics using 4G LTE CAT1 radio module for AT&T network
• Worked with antenna designer on simulation, integration and antenna characterization of 4G LTE CAT1 and 900MHz WLAN antennas
• Performed board bring up in lab, debug for hardware/FW issues and performed electrical and RF characterization
• Worked with ME and PCB designer for antenna placement, integration and manufacturability
• Led FCC/ISED, IEC60601 and FDA wireless coexistence testing activities at test labs
• Led AT&T network readiness testing
• NPI support at Flex manufacturing facility

Radio Connectivity Module for AED

• Design LTE CAT M1/NB-IoT radio connectivity solution with global roaming
• Collaborated with antenna designers and ME on antenna placement for optimal over-the-air performance
• Test several antennas inside AED and down select one with best efficiency, TRP and TIS
• Worked with external lab to define global certification and regulatory test plan

Smart Garment with Bio-sensing

• Design board with ARM Cortex-M7, PMIC, Ethernet, RS-485, ADC, PPG and temp sensors for ECG, respiration, PPG and EMG monitoring integrated inside bio-sensing garment
• Worked with PCB designers on board layout of high speed signal routing [memory and digital signals] in accordance with EMI/EMC best practices, RF signal integrity and DFA/DFM reviews
• Worked with ME and Textile designers for electrodes placement, thermal analysis and manufacturability of smart garment
• Performed board bring up in lab, debug for hardware/FW issues and performed electrical characterization

IIoT design of smart hat

• Design main board with ARM Cortex-A9 processor, PMIC, DDR3, Ethernet, USB2.0, SPI, I2C, SDIO, WLAN 2.4/5GHz, GPS, BLE, audio and video codecs
• Design to monitor bio-signals [SpO2 and heart rate], temperature, humidity, pressure and external force
• Design electronic circuit to detect and process data from CO, H2S, O2 and hydrocarbon gas sensors with actuation and interface with main board using 16/24 bit ADCs
• Wrote test plans for board bring up and electrical/RF characterization and developed system power tree
• Worked with PCB designers on board layout of high speed signal routing [memory and digital signals] in accordance with EMI/EMC best practices, RF signal integrity and DFA/DFM reviews
• Worked with ME designers for placement, thermal analysis and manufacturability
• Performed board bring up in lab, debug for hardware/FW issues and performed electrical characterization

IoT tracker for smart apparel

• Design electrical and RF subsystems for IP57 smart apparel to monitor back posture while running, sitting and standing using 9-axis IMU and BLE.
• Performed system reliability tests including vibration, shock, chemical immersion, temperature cycle test and FCC part 15 emission compliance

Smart home gateway

• Design home gateway system to control smart window blinds, door locks and garage doors via smart home application using LoRA [433MHz] and Z-wave [850MHz]
• Performed complete Apple HomeKit and Z-wave certification, wrote compliance test report with SW logs for Bonjour test and self-certification audit test cases

• Performed RFIC bench validation for gain, IIP2, NF, phase noise, S parameter, output power, EVM, ACLR, IQ offset, PLL spurs and settling time, RXBN, spurious analysis, out-band emission measurements, IQ and CS calibration
• Presented design analysis and recommendations to IC design team and performed detail oriented technical design reviews
• Extensively worked with PXA N9030A, E5052B signal source analyzer, wireless communication analyzer, N5182B MXG, logic analyzer and oscilloscopes
• Wrote test scripts in MATLAB and Python for bench debug and characterization

• Design advance wireless connectivity solution with WLAN a/b/g/n/ac/2x2MIMO with BT4.0, BLE and FM using Broadcom, TI and Qualcomm-Atheros SoCs
• Design board with RF, analog and digital components, DC-DC converters, power management unit [PMU], CPU/AP, RFIC and communication interface [HDMI, USB, I2S, MIPI, SPI, Ethernet, I2C]
• Performed system level co-existence testing of co-located radios – WLAN/ BT with CDMA/GSM/UMTS/LTE
• Debug digital circuits that involved USB, I2S, comparators, amplifiers, LDO and DC switchers for skew, group delay, cross-talk, impedance and loss
• Worked with antenna designers for various OTA and SAR measurements to conform to regulatory emission and carrier TRP and TIS requirements
• Troubleshoot signal de-sense related to display, camera FF/RF, IMU, DC-DC switching frequency and high frequency and high speed memory or system clocks and worked closely with RF/HW/antenna teams to optimize board layout

• Worked with IC designers to address issues related to poor EVM due to IQ mismatch, DC power latch-up, on-chip TX calibration optimization, insufficient RF switch timings leading to ACPR failure
• Wrote test plans to characterize IEEE 802.11a/b/g/n, BT, FM, Zigbee modules
• Performed temperature, voltage range, humidity, drop and other reliability tests for production readiness
• On-site customer support to facilitate module seamless integration on customer platform. Worked extensively with customers in RF/electrical troubleshoot, board bring up and offered high level of customer satisfaction
• Performed failure analysis including performance and functional failure of modules on customer platform
• Performed regulatory and technical certification of modules for FCC and Z-wave