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Engineer Electrical

San Ramon, California, United States
May 13, 2019

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Jianhua Ying


Objective: Electronic Engineer in the System, Circuit, Device and Material. Summary of Skills:

- Experience in the design and manufacture of Analog/Mixed signal circuits and systems; Power supply unit; System control unit.

- Understand the selection of material, components, device, structure, subsystem for electronic engineering.

- PCB design; FPGA design; Design for test; Design for Manufacture; Design for customer.

- Well known for the characteristic of the Bipolar, CMOS devices and Component physical structure in PCB board, Analog circuit and digital circuit unite model. Signal conversion.

- And experience with Circuit stability with feedback loop optimization; High frequency Matching impedance, Switch softly with EMC; Nonlinear treatment with device characteristics of the circuit; Currents and voltage sharing technique; ESD protection; Hot flux and thermal stability.

- Fixture design; Prototype creation; Troubleshooting and Fault analysis.

- Versed in SPICE, HSPICE simulation software, Virtuoso verification tools, VHDL, Altium, Matlab, C.

- Training the people.


Feb 6 2017 ~ now, Jabil AOC Pleasanton CA

Electrical Engineer

Design of VCSEL test system board in mixed signal. Design TEC controller circuit system for high power laser use. Design micro socket adapter with tiny pogo pins (300um) for VCSEL test. Design of MicroMAX attachment process to VCSEL area with flexable PCB; Design soldering process of the BGA(pitch0.8) of Cstar device to CFP2 PCB module; Device and system test and analysis in High Temp. High Humidity. Research of nanometer material sealing in the optical module; Maintenance of the equipments in the Clean room; Coach the people. Sept 2 2015 ~ Apr 29 2016, Optoplex Corp. Fremont CA Test Engineer

R/D in 90 Degree Optical Hybrid Receiver PCB Board; R/D in High Power EDFA Driver PCB Board. Test of deviation of wavelength and power peak in optical module, Troubleshooting and Failure analysis in circuit system, Find of root cause with the mechanism in devices. Write report and specification. Optical Channel Monitor test; Tunable Filter test; MEMS Optical Channel Monitor test; RMA with Optical modules.

Optical Spectrum Analyzer Ando AQ6317B; Network Analyzer HP 8753E Newport Swept-Wavelength Tunable Lasers;EXFO Broadband Source - FLS-2200 Nov 8 2012 ~ Aug 17, 2015, NeuroSky Inc. San Jose CA System Engineer

Design and built the prototype of circuit product. Design of system function, check of circuit module, interface and devices. Material and components choice for Electrocardiography and Electroencephalography wearable product.

Create test fixtures for human body signal and data mining. Design software to analysis the SNR of the signal data. Troubleshooting in circuit system and devices. Design of laser cutting process for products.

Function Generator Agilent 33270A; Oscilloscope Tektronix MSO 4034; Differential Amplifier Tektronix ADA400A; Dynamic Signal Analyzer HP 35670A; Mind Wave Mobile Start Kit by NeuroSky; TGAM (12bit) EEG tester (software) by NeuroSky; MATLAB Data Analysis(software) by NeuroSky Jun 25,2012 ~ Sep 19, 2012 Calmar Laser Inc. Sunnyvale CA Consultant

Assembly and test of laser equipment; Check the procedure and traveler; Circuit troubleshooting; High power Laser screening test design; High power supply modification; Create fixtures for test; Mar 27, 2011~ Aug 31, 2011 InPhenix Corporation. Livermore CA Engineer.

Research on optical power drifting with temperature in Laser Diode and Super Luminescent LED Devices; Photolithography and E-beam evaporation process with Titanium, Platinum, and Aurum; RTA (rapid thermal annealing) analysis with interface in multi-layer thin film. 2002 to 2010 Integrated circuits design center of Huazhong University of Science and Technology Sr. Engineer. Wuhan, China

Fast Charging Station System Designed for Electric Bicycles in fly-back topology, the output voltage range is DC24V-80V, the max power is 500W.

Design and test of product RFID reader (125kHz) system. High precise (+-0.5ppm/ T) real-time clock circuit product with lower consumption digital trimming circuit Manufacture test in Real-Time Clock circuit with low power consumption Supply voltage 1.6v -5.5v Design of Micro power boosting DC-DC converter less then 1uA in shutdown mode, limited current 350mA, Vin 0.9V, Vout 34V, efficiency 85%.

Design of PWM buck converter circuit with peak current loop in BCD05 process, regulation 0.1% during supply voltage 4.7~15V, out 3.3V/3A .

Design of a high-speed charge-pump phase-locked loops(PLL)for clock recovery circuits. Psupply:3.3V, Foutput:1.25GHz, Finput:625MHz, lock time: 200ns

Test board design for Class D audio power amplifier with low THD(0.08%) and high PSRR(77dB/at 217Hz).

12-bit voltage mode R-2R ladder digital to analog converter (DAC). 1990 to 2001 Semiconductor Processing Line of Huazhong University of Science and Technology Engineer. Wuhan, China

Algorithm for the arc in CAD of Layout for power transistor; ASIC TX9902 (FPGA) optic communication Chip; A product of VDMOS power transistor; Micro-crystal silicon pressure sensor; Polymer electronics capacity humidity sensor; Automobile Generator Voltage Electronic Regulator. Education:

Sep. 1986 ~ Jun. 1989 (Master of Microelectronics Engineering.) Dept. of Electronics Science and Technology. Huazhong University of Science and Technology. Sep. 1974 ~ Jun. 1977 (Bachelor of Microelectronics Engineering) Dept. of Electronic Engineering. Huazhong University of Science and Technology.

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