Engineer Design

C. David Caleb

**** *. ********* **.

Glendale, AZ. 85306

Home phone: 602-***-****

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

Employment Goal:

I am seeking for a Sr. RF Engineering position in order to continue achieving

personal and technical development, by finding innovative ways to design and/or

improve the hardware for which I am given responsibility.

Skills:

• Strong skills in analysis, modeling and synthesis of active and passive

RF/Microwave circuits. I have developed a variety of analytical methods to rapidly

prototype and examine linear and non linear RF/Microwave circuit design ideas.

• Excellent skills in the development of test methods using RF/Microwave test

equipment such as spectrum analyzers, network analyzers and performance signal

generators. I am familiar with many measurement techniques for both Tx and Rx

transceiver subsystems and circuits.

• Working knowledge of EM simulation packages such as Sonnet and HFSS.

• Strong knowledge of RF/MW circuit design software packages ADS, MW Office

and PSpice.

Professional Experience:

Sr. RF Engineer 7/09 – Present

Taser International

My responsibilities included the integration of advanced ISM band and GPS capability into new product

development programs for Taser electronic evidence collection systems. Design work to involved design

and layout of associated matching circuitry, amplification and antenna selection /placement for proposed

ISM band and GPS modules. Duties also included the development of test strategy in support of

manufacturing. Interface with contract manufacturers to resolve issues through monthly reviews of

technical issues.

Accomplishments:

• E xecuted the bench level characterization, implementation and integration of ISM

band RF communication devices for new product int roductions. I was also

responsible for overall link reliability and range optimization of ISM band

communication subsystems.

• I improved new product GPS subsystem time to fix and t racking ability through

t he design and integration of the RF path circuit ry. I helped to implement and

develop an assisted GPS method to achieve fix times as fast as 10 seconds.

• I led the development of test strategy and methodology for all new RF subsystems

i ntegrated into new product int roductions.

• Perform t rade studies on emerging Bluetooth, Wi-Fi and other ISM band

communication protocols suitable for integration into new products.

RF Engineer 9/05 – 5/09

ViaSat, Inc.

My responsibilities included the design, development and test of 1 to 90 GHz MMICs and multi-chip

modules for existing products and advanced new product development programs. Design work to

involved power amplifiers, low noise amplifiers, mixers, oscillators, filters and IC packages. MMIC design

work performed on state of the art GaAs, GaN and SiGe foundry processes. Worked on a collaborative

team of mechanical, manufacturing and test engineers to ensure successful product development and

transfer to production.

Accomplishments:

• I performed the design of a 2 Stage LO Amp on .15 um WIN foundry process and

i mproved the gain response, over the original module, for a new Ka band

t ransmit ter M M IC. This also resulted in improved spurious response of the overall

M M IC performance.

• Responsible for the re-design of a diode based sub-harmonic pumped up-converter

for Ka band t ransmitter module and achieved excellent harmonic balance thus

i mproved overall t ransmit linearity.

• I mproved the temperature stabili ty performance of the ViaSat satelli te

t ransceiver Ka band t ransmit ter module through optimization of the temperature

compensation circuit ry of the H igh Power Amp M M IC.

• Performed a t rade study in co-operation with M IT Lincoln Labs on power

amplifier performance optimization techniques which has lead to the development

of a high power amplifier M M IC for mili tary applications.

RF Test Engineer 1/97 – 6/05

Agilent Technologies

Responsibili ties included testing of Agilent Vector Network analyzer microwave integrated

circuits, subsystems, and final systems for new product int roductions and production.

D uties included design and development of microwave circuit test procedures, measurement

a lgorithms, test jigs and fixtures as well as specify test equipment. I was responsible for

performing measurement uncertainty analysis, measuring performance metrics and

p reparing summarized and detailed reports on statistical product performance. O ther

d uties included supporting VNA production in terms of test failure diagnoses and analysis

for various product lines. I performed re-design of microwave circuits and subassemblies to

resolve obsolescence and design issues in manufacturing.

Accomplishments:

• I was responsible for the development of test systems, to verify the performance of

network analyzer subsystems and modules, where I was able to develop a more

efficient and accurate source path calibration routine for Agilent 8720 PNA.

• Worked with R&D on DFM/DFT issues during new product int roductions where I

i nt roduced PCB level RF testing which improved yields at final system test upon

i ni tial product release.

• Responsible for generating test support documentation and performing

measurement uncertainty analysis.

• Performed re-designs for part obsolescence, performance, and design issues. I

redesigned a 13 stage logarithmic amplifier extending product life of the 8757D

scalar network analyzer for 3 years.

Education:

University of Wisconsin – Madison, B.S.E.E. 12/92-12/96

Major: Electrical Engineering

Madison Area Technical College, A.A.S. 08/90-05/92

Major: Electronics Technology

National Technological University 08/97-08/02

Masters Program

Field of Study: Microwave Integrated Circuits

References are available

Contact this candidate