RF engineer

YUANZHI (JOHN) LIN

Email: ****.*****@*****.*** Cell: 513-***-****

Address: **** ******** ***, ********** ** 45220

OBJECTIVE

To pursue an industry position of Electrical Engineer, specified in the fields of Radio Frequency (RF) PCB Circuit Design & Test and Embedded System Design.

HIGHLIGHTS

• Half-year industrial R&D experience in Zigbee technique application.

• 3 Years experience in Mixed-signal RF PCB board-level circuit design and system characterization test.

• 3 Years experience in computational electro magnetic research and PCB antenna design&test.

• 1 Year industry experience in Embedded Linux system& firmware development and QA test.

SKILLS

• Program Skills: C/C++, UNIX shell scripting

• Operating Systems: UNIX, Windows, Embedded system

• Software: ADS, HFSS, IAR Embedded Workbench，Altium Design 6.6，HP VEE/LabVIEW, HSPICE, MATLAB

• R&D abilities: Low Noise Amplifier (LNAs), Oscillators, Mixer, transceiver, ADC/DACs

• Test Skills: Noise figure, power, Phase noise, S-parameters, IP3/IP2, P1dB, Sensitivity

• Equipments: Vector Network Analyzer, Spectrum Analyzer, Noise Figure Meter, Oscilloscope, Anechoic Chamber

WORK EXPERIENCE

RF Engineer, VMK Inc., Cincinnati,OH, US 02/2009 – Present

• Participate in the R&D of the supermarket wireless intelligent network based on Zigbee technique (IEEE802.15.4).

• Design PCB wireless communication boards which are used to pick up the analog sensor signal using the UART/SPI port and deliver it to the POS server via ISM radio bands. The chipsets of CC24xx & CC25xx @Texas Instrument, the PCB IFA antenna, the SMD antenna and the Balun design are involved.

• Experienced programming skills of the IAR Embedded Workbench.

• Experience in the PCB circuit design, using Altium Designer/Protel.

Electrical Engineer (co-op), HHtech Ltd., Hefei, Anhui, China 09/2001 – 07/2002

• Participate in the R&D activities of HHtech’s generation-2nd embedded system board based on the Coldfire microprocessor@ Freescale.

• Participate in the software application development, e.g., common gate interface (CGI) coding, and the driver development of hardware instruments, such as the printer and the net card.

• Responsibilities to debugging customized products based on HHtech’s standard embedded system kernel board, error report and customer technical support.

• Experience in software development skill under UNIX system environment.

Graduate Research Assistant, RF-Microwave Research Lab 09/2005 - 03/2009

Univ. of Cincinnati, Cincinnati, OH, US

• Conduct research on the Active Antenna Oscillators -- a series of active antenna oscillators based on HBT NE58219 transistors have been designed and fabricated with printed circuit board (PCB). These oscillators were tested to work very well at 1.8 GHz in an Anechoic chamber.

• Develop a two-stage LNA at 2.4 GHz using techniques of MOSFETs and PCB, and measure characterizations of Gain, Noise Figure and P1dB using RF measurement instruments.

• Assemble an automatic test equipment (ATE) network, including instruments of RF signal generators, network analyzer, spectrum analyzer, etc. It is controlled by HP VEE program.

• Design a receiver working at 1MHz including LNA, down-conversion Mixer, Low-Pass Filter (LPF), IF Amplifier and A/D Converter (ADC) using MAGIC and HSPICE.

Graduate Research Assistant, Applied Electromagnetics/Microwave Lab 09/2002 - 07/2005

Univ. of Science & Technology of China, Hefei, Anhui, China

• Conduct research on the Leaky-wave Dielectric Waveguides.

• Involve in research on the Left-Hand Material. A serial of antennas based on Left-Hand Material theory have been designed and simulated with HFSS and ADS.

• Professional in the Microwave/Electromagnetics Theory and the antenna design.

• The work has been published, and is available upon request.

EDUCATION

• M.S. of Electrical and Computer Engineering 09/2005 – 03/2009

University of Cincinnati, Cincinnati, Ohio, USA

• M.S. of Electrical Engineering 09/2002 - 07/2005

University of Science & Technology of China, Hefei, China

• B.S. of Electrical Engineering 09/1997 – 07/2002

University of Science & Technology of China, Hefei, China

PERSONALITY

• Team working & collaborative

• Good communication skills

• Aggressive & hard working

• Fast learning and adaptive to new environment

• Interested in soccer, badminton, basketball, tennis, hiking and music

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