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RF filter designer looking for new employment - RF Cafe Forums

Because of the high maintenance needed to monitor and filter spammers from the RF Cafe Forums, I decided that it would be best to just archive the pages to make all the good information posted in the past available for review. It is unfortunate that the scumbags of the world ruin an otherwise useful venue for people wanting to exchanged useful ideas and views. It seems that the more formal social media like Facebook pretty much dominate this kind of venue anymore anyway, so if you would like to post something on RF Cafe's Facebook page, please do.

Below are all of the forum threads, including all the responses to the original posts.


 Post subject: RF filter designer looking for new employment
Posted: Tue Nov 24, 2009 11:28 am 
 
Lieutenant

Joined: Tue Nov 24, 2009 11:12 am
Posts: 1
FREEMAN YU TANG
3805 Dupuis Ave., Apartment-8
Montreal, QC H3T 1E5
Tel: (514) 731- 3853
freemantang@yahoo.com

Objective
Serve in a role that combines my physics background, engineering skills and experience driving short term tactical and long term strategic initiatives, ensuring future company and personal career growth.


Ph.D. Microwave Plasma Physics 8 Years Experience, R&D, RF/Microwave Components
Master of Engineering Microwave Electronics 5 Years Experience, RF test & Manufacturing Electronic Products
Bachelor Sc.A. Electronic Material & Devices 5 Years Experience, Programming Fortran, C & Matlab
Fluent, Spoken & Written: English, Chinese 3 Years Experience, Physics Research


WORK EXPERIENCE

RF Products Inc., Camden, NJ 2007 - 2009

RF Filter Engineer , R&D
• Developed VHF tunable filter with helical cavity
• Designed UHF tunable filter with coaxial cavity
• Developed general purpose Matlab codes for interdigital and combline filters;
• Designed wide passband capacitance loaded interdigital filter (225-400 MHz) with HFSS
• Matching network, PIN diode RF switching circuit, RF test, circuit tuning & debug

Accomplishment
¡ Fast tuning (frequency hopping) helical filters (108-174 MHz, 30-88 MHz)
¡ Wide passband capactively loaded interdigital filter (225-400 MHz)
¡ Folded combline filter (1710-1880 MHz), Chebyshev and elliptic
¡ Folded inderdigital filter (1710-1880 MHz), Chebyshev response

POLY GRAMES RESEARCH CENTER, University of Montreal 2002 - 2006

THESIS AND PROJECTS COMPLETED
• Developed and designed single mode and dual mode cavity filters and transition with substrate integrated waveguide technique (SIW), HFSS and uWave Wizard
• Designed microstrip lowpass and bandpass filter with ADS
• Designed microstrip-waveguide power combiner
• Designed LNA & Doherty amplifier with ADS conceptually
• Developed code in Matlab with mode matching to solve waveguide discontinuity problem
• Designed waveguide-coaxial transition in HFSS
• Designed interdigital, combline, DR filter and coaxial LP filter in HFSS
• PIN diode microwave applications to switching, phase shifter and attenuator

Accomplishment
¡ 3 pieces of direct-coupled cavity filters and 3 pieces of dual mode filter on 24 GHz
¡ Combline filter (f0=1.5 GHz, w=8%), interdigital filter (1.5 GHz)
¡ Micorstrip bandpass filter (3.05 GHz) and microstrip lowpass filter (1.0 GHz)
¡ Coaxial lowpass filters (1.9 GHz, 3.0 GHz)

COMDEV SPACE, Ontario 2001 - 2002

ADVANCED MEMBER OF TECHNICAL STAFF
• Tested satellite microwave communication switches
• ATE-HP VEE programming
• Failure mode analysis

Accomplishment
¡ Upgrading the waveguide switch test system with new high temperature infrared diode/detector


FOCUS-MICROWAVES INC., Montreal 2001 -2001

APPLICATION ENGINEER
• Installed the PC controlled load-pull measurement system with tuners
• Trained and gave support to customers
• Developed the controlling software and write instrument driver
• Designed and manufactured minimized loss test fixture for FETs

Accomplishment
¡ Excellent design scenario for test fixture


JPM-ANTRUM INTERFACE, Ontario 2000 - 2000

RF / TEST ENGINEER
• Tested products using HP Network Analyzers, passive intermodulation tester and other electronic test instruments
• Worked as chief engineer in charge of engineering manufacturing and quality
• Set-up TDR analysis, ESD protection and implemented PIM test
• Guided technician and trained operator

Accomplishments
¡ Corrected the use of network analyzers
¡ Set-up ESD safe workstation
¡ Replaced the old test software with HP-VEE


SHENZHEN IBM TECHNOLOGY PRODUCTS CO., China 1998 - 1999

PROCESS ENGINEER
• Developed production procedure for laptop magnetic heads
• Set-up and certified production equipment
• Designed and carried out gauge and repeatability experiment
• Tested semiconductor device electrically and optically
• Trained operator on operation of equipment software
• Held sole responsibility for ESD and controlled clean room

Accomplishment
¡ Set-up the new production line as chief engineer and the ISO 9000 quality control staff


SOUTHWESTERN INSTITUTE OF PHYSICS, China 1990 - 1998

RESEARCH SCIENTIST
• Simulated, designed phased array antenna and calculated Brambilla spectrum for 2.45 GHz LHCD
• Simulated microwave ray trajectory and energy deposition in plasma using Fokker-Planck equation for LHCD
• Electron cyclotron resonance heating in tokamak
• Researched the physics in microwave tubes and plasma device
• Carried out microwave-plasma interaction experiment on apparatus
• Designed electromagnetics test kits for graduate student entrance exams

HONG MING ELECTRONIC COMPONENT CO., China 1988 - 1990

ASSISTANT ENGINEER
• Developed and designed high frequency resistor and microwave matching network
• Assembled and test thick film potentiometer
• Acquired intensive knowledge of electronic component manufacturing, semiconductor and IC process

COMPUTER KNOWLEDGE

SOFTWARE
• HFSS 10, 11
• Mician U-wave
• Matlab 7.0.1
• TurboCAD, AutoCad

• ADS
• CST
• C & C++
• Fortran


HARDWARE
• HP Network Analyzers: 8720ES, 8753, 8714
• Spectrum Analyzer
• Signal Generator
• Power Meters
• Frequency Counter
• Waveguide Component
• Coaxial and Microstrip Line
• RF / Microwave IC
• Solid State Device Process
• ESD Meter and Facilities

EDUCATION

UNIVERSITY OF MONTREAL 2006
Master of Applied Science
Microwave Integrated Circuit Development and Design

SOUTHWESTERN INSTITUTE OF PHYSICS, China 1995
Ph.D.
Plasma Physics

UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA, China 1988
Master of Engineering
Microwave Electronics

UNIVERSITY OF ELECTRONIC SCIENCE &D TECHNOLOGY OF CHINA, China 1985
Bachelor Sc.A.
Electronic Material and Devices


AWARDS

• IBM award for contribution to ISO 9002 system
• CNNC award, 1995, 1997
• Excellent student awards by UESTC, 1982 – 1986


INTERESTS & HOBBIES


• Tennis
• Volleyball
• Reading
• Music
• Cooking


ANNEXE

TANG, Yu and WU, Ku, Development of Substrate Integrated Waveguide Filters---Part One: Chebyshev Response Direct-Coupled Cavity Bandpass Filters. RF & Microwave Computer Aided Engineering, is about to send.

TANG, Yu and WU, Ku, Development of Substrate Integrated Waveguide Filters---Part Two: Pseudo-Elliptic Dual Mode Cavity Bandpass Filters. RF & Microwave Computer Aided Engineering, is about to send.

TANG, Yu etc. Praque, Republic of Czechoslovakia (November 1996). Lower Hybrid Current Drive Experiments on HL-IM Tokamak. Symposium on Physics of Small Tokamak.


TANG, Yu. Chengdu, China (September 1996). Results of a Fokker-Planck Simulation Model of Lower Hybrid Current Drive in Tokamak. Nuclear Fusion and Plasma Physics, vol. 16 No 3.


TANG, Yu, He Qibing. Beijing, China (June 1996). Numerical Method of Simulating Lower Hybrid Wave Current Drive. Chinese Journal of Computational Physics, vol. 13 No 2.


TANG, Yu. Beijing, China (June 1995). Simulation Studies for Lower Hybrid Wave Current Drive Experiments on HL-1 Tokamak. China Nuclear Science and Technology Report.


TANG, Yu. Chengdu, China (June 21-23, 1994). Ray Tracing and Fokker-Planck Calculation during Lower Hybrid Wave Current Drive in HL-1 Tokamak. Digest of International Conference on Plasma Science and Technology ’94.


TANG, Yu. Chengdu, China (June 1991). Thermal Analysis for a Gyrotron Output Window. Nuclear Fusion and Plasma Physics, vol. 11 No 2.


 
   
 
 Post subject: Re: RF filter designer looking for new employment
Posted: Wed Nov 25, 2009 1:32 pm 
 
Site Admin
User avatar

Joined: Sun Aug 03, 2003 2:02 pm
Posts: 308
Location: Erie, PA
Greetings Freeman:

I posted a notice in the Recent Additions colmun on the RF Cafe homepage for you. Good luck with your search.

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- Kirt Blattenberger 
RF Cafe Progenitor & Webmaster




Posted  11/12/2012
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