Engineer Design

Yong Su

**** ***** ******* **. *****, TX *****

Phone: 972*-**-****(cell), 972-***-****(home)

Email: ********@*****.***

Summary

Sr. RF Design Engineer with 20 years of experience in RF and

microwave design. Design and development RF transceiver circuits

for several wireless telecommunication systems. Work closely

with other team and provide support for software and manufactory

engineers. Skilled in problem solved.

. RF and microwave circuits design

. RF system and circuits testing

. RF and microwave system level design

. Strong knowledge on RF CAD software

. Strong experience on PCB layout

. Provide manufacture support

. Strong experience on using RF equipment

Major Accomplishments

. Designed and developed RF transceiver circuits for WiFi

802.16a/b/g/n access points.

. Designed and developed RF transceiver circuits for 4G (WiMax

802.16e) base station.

. Designed and developed RF transceiver circuit for several

versions of wireless communication terminal equipment, such as

CPE and PCMCIA using WiMAX and SCDMA technology.

. Designed and developed RF and analog circuits for SCDMA

handset phones.

. Built engineer verification test platform for RF boards of

WiFi access points (APs) for vilification and improving RF

circuits design.

. Built ATE platform for RF boards of WiFi access points (APs)

for manufactory products testing and improve products yield

rate.

. Patent: No. 7937052. "Multiple input multiple output signal

receiving apparatus with optimized performance"

Professional Experience

2000/2011 Cisco System Inc./Navini Networks, Richardson TX

RF Design Engineer IV (2008-2011)

Designed and developed RF transceiver circuits for WiFi Access

Points (APs) for enterprise market. Include 5GHz 802.11a/n 2x3

mimo outdoor AP and 2.4GHz/5GHz 802.11a/b/g/n 2x2 mimo indoor

AP. Outdoor version AP based on the Marvell WiFi chips and

indoor version based on Atheros WiFi chips.

Designed and developed RF transceiver circuits for 802.16e WiMax

8x8 mimo base station (BTS), for frequency bands of 2.3GHz WCS

band, 2.5-2.6GHz BRS (used MMDS) band and 3.4-3.6 WLL band.

Responsible for the design of RF and analog circuits include

baseband circuits, RF match circuits, drive amplifier, PA, LNA,

diplexer and RF filter.

Responsible for RF system cascade analysis, components

evaluation, schematic capture, PCB layout with Cadence tools,

RF circuits turning, engineering prototype evaluation.

Responsible for engineer design verification test (DVT) and

system test. Defined the RF circuits design spec. Created test

plan follow the design spec. Building the automatic test

platform with Agilent equipment and Labview software. Tested on

both RF sub-circuits and whole system. Found design problems and

solved problems.

Strong knowledge on CAD software such, ADS, Genesys, Matlab and

Labview. Using ADS and Genesys in RF design. Modified labview

code for testing program.

Strong experience on WiFi AP software control and testing.

Strong Experience on using RF equipment such as network

analyzer, spectrum analyzer, power meter, signal generator,

oscilloscope. Also on some special test box like Agilent WiFi

test set N4010 and N8300. Litepoint test set IQnxn and IQmax.

Lead RF Design Engineer - CPE (2000-2007 Old Navini, Acquired by

Cisco)

Designed and developed RF and analog circuits for wireless broadband

modems for use in Navini TD-SCDMA or Mobile WiMax system. These

modems included several version of desk top CPE and PCMCIA card

form factor. The frequency bands of operation of these modems

are 2.3GHz WCS band, 2.4GHz ISM band, 2.5-2.7GHz BRS (old MMDS)

band, 3.4-3.6GHz WLL band, and some special frequency bands such

as 1.8GHz, 2.01GHz.

Responsible for the design of RF and analog circuits which

include A/D, D/A, baseband circuits, I&Q modulator/demodulator,

up/down converter, LNA, PA, frequency synthesizer, RF filter, DC

power supply circuits.

Responsible for RF system cascade analysis, components

evaluation, circuits design, schematic capture, PCB layout, RF

circuits turning, engineering prototype evaluation, manufacture

support.

Interfaced closely with Digital Design Engineers on the RF/Digital

interface circuits. Interfaced closely with Software Engineers

during HW/SW integration. Interfaced closely with Test Engineers

on factory test failure analysis to improve test yield.

Interfaced closely with Manufacturing Engineers on DFM issues to

improve productivity.

Strong experience on layout with multi-layer PCB for RF

circuits. 10 years experience on Protel tool.

11/97-01/00 Cwill Telecommunications Inc. Austin, TX

Design Engineer

Designed and developed RF circuits for SCDMA handset

phones works on the frequency of 1800MHz.

Responsible for the design of RF circuits include I&Q

modulator/demodulator, up/down converter, LNA, PA, frequency

synthesizer.

Responsible for testing and fine tuning of those circuits for

improve performance.

04/97-11/97 Technical University of Hamburg, High Frequency Institute,

Hamburg, Germany

Visiting scholar

Involved in the research of microwave circuits that included

nonlinear Gunn diode microwave and millimeter circuits.

03/91-03/97 Shanghai University of Science and Technology, Department

of Electronic engineering

Researcher

Did research on electromagnetic and microwave topics that

included microwave and millimeter wave circuits, microwave and

millimeter wave measurements, Satellite Communication System,

and Microstrip Antenna.

TEACHING EXPERIENCE

03/91-03/97 Shanghai University of Science and Technology,

Department of Electronic engineering

Instructor

Gave lecture on topics:

Electromagnetic Field Theory, 1991-1997

Microwave Antenna, 1994-1997

Microwave Measurement, For graduate students, 1992-

1997

Microwave Circuits, for foreign graduate student,

1994-1997

EDUCATION

M. S. Degree in Electrical Engineering - February 1991

Shanghai University of Science and Technology, Shanghai, China

B. S. Degree in Electrical Engineering - July 1988

Shanghai University of Science and Technology, Shanghai, China

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