Kirt R. Blattenberger
NOT looking for a new job.
DO NOT contact me.
Electrical engineer with twenty
years demonstrated success in a product development environment specifying,
designing, and testing radar, radio and wireless communications hardware.
Electronics technician for eleven years prior to earning a BSEE. Experienced
in detailed design, prototype fabrication, testing, and documentation
of RF and analog circuit boards and connectorized components. Some digital
and PLD design. Familiar with many software packages.
System Design Experience:
Beginning with my first assignment out of college performing
system design for an airborne L-Band receiver, I have purposed to increase
my knowledge of system requirements and understand the effects and limitations
that realizable components impose on the system. I have combined creation
of personal software and usage of commercial software to gain an understanding
of internal and external effects on performance, and to compare those
predictions with actual prototype models built in the laboratory. A
combination of extensive research into known phenomena, conducting tests
to determine real-life performance and tapping the experienced engineers
is utilized throughout the initial specification, design and implementation
phases. Lessons learned are fed back into the models to make future
predictions more accurate. Having participated in design teams for airborne
and ground-based radar, military communications, and commercial satellite
earth station systems, I have a very good appreciation for the great
number of factors that can - and do - affect system performance.
Circuit Design Experience:
circuit board designs have been completed, ranging from simple power
supply filters to multi-layered, mixed signal digital/RF modems. Most
of my work entails analog and RF circuits up through about 1 GHz, with
a small amount of digital support circuitry. Opamps, lumped element
passive and active filters, DAC's/ADC's, switches, couplers, control &
monitoring, and power supplies are among successfully implemented designs.
A good understanding of component and circuit trace coupling has resulted
in very few second or third iterations of PCB's due to crosstalk or
interference issues. I have supervised the PCB layout process for many
complex PCB's that included controlled impedance layers, analog/digital
power and ground separation, RFI/EMI shielding and high density, double-sided
configurations. Software simulation primarily included use of MicroSim
and Touchstone, with various other packages used for minor features
(e.g., active filter design).
With frequencies above 1 GHz,
connectorized components with coax interconnects have been the rule.
Some waveguide work has been performed in the S-, C-, X- and Ka-bands.
These circuits have usually been part of a baseband-to-microwave conversion
chain, so the total system requirements were included in the component
selection and interface plan. Technical Writing Experience:
For every project on which I have worked, writing in the form
of system performance specifications, electrical test procedures, production
assembly procedures, system reference documents and proposal generation
has been an integral part. Daily maintenance of the RF Cafe web site
and correspondence with site visitors often requires application of
sound technical writing skills. A couple published articles in trade
magazines and very extensive user's manuals for my software are included
as well. Finally, I have performed a couple pre-publication technical
book reviews for a publisher.Customer Interface Experience:
Beginning with proposals and culminating with presentations
to the customer for design reviews and visits to customer sites for
installation assistance, my experiences have been very satisfactory.
At times, frequent telephone and face-to-face meetings were necessary
to assure customer expectations were met. Although I enjoy working directly
with customers, my preference is to remain in the plant and avoid travel
altogether. Test Experience:
motto is, "If it hasn't been tested, it doesn't work." No amount of
simulation and planning can suffice to declare a design working without
testing over all planned operational conditions. Accordingly, much of
my time as an engineer has been spent in a lab environment building,
tuning and measuring circuits and systems. Test equipment familiarity
is listed below. Strengths:
to enter new situations and quickly come up to speed on requirements,
then propose and implement solutions. I have successfully worked both
alone and in design teams. As part of my RF Cafe effort, I consistently
review many industry news events and vendor products to keep current
on the latest innovations. Weaknesses:
I prefer not to take on project management roles, preferring rather
to be an individual contributor and concentrate on technical aspects
of projects. Being required travel for anything other than seminars
or classes causes me to look for new jobs. Detailed
Experience: (chronological order, beginning
with the most recent)
Performed competitive analysis and report
writing regarding power amplifiers, transceivers and front-end modules
for cell phones, Bluetooth, WLAN and GPS products
Investigated ESD protection and testing methods
for silicon and GaAs MMICs and modules, including IEC61000-2-4,
JEDEC and MIL-STD-883
Maintained competitive analysis website on
Designed turn-key production test solutions
for wireless base station and wireless appliance products in the
GSM, DCS, PCS and iDEN™ bands.
Generated electrical engineering portion of
test system proposals, including concept definition, cost estimate,
labor schedule and customer interface.
Test fixture and system interface design for
high volume production environments, including pin probing of circuit
boards and design of over-the-air antenna RF couplers.
Performed passive intermodulation (PIM) testing
on high power base station components.
Supported design and integration effort on
VHF radio multi-port cosite interference cancellation system.
Designed UHF amplifier/filter printed circuit
Designed and tested VHF switch matrix and
Perform system design and analysis on C-,
X-, and Ku-Band satellite earth station systems.
Create production assembly drawings and parts
Performed preliminary RF/analog design and
analysis of transmitter/receiver chains on S-Band mobile radar system
Specified, designed, analyzed, ordered parts
for, directed building of, documented, tested and integrated RF/analog
transmit/receive chain of Multi-Purpose Airport Radar (MPAR) IR&D
project. S-Band through baseband up/down conversion using combination
of coaxial and waveguide components was accomplished. Interfaces
to digital controller circuits included LVDS, RS-422 and relay implementations.
High speed PIN switches and attenuators; low noise amplifiers; high
precision, low noise opamp circuits; and precision A/D converters
Provided technical support to field engineering
effort responsible for initial testing and verification of active
element phased array antenna.
Planned and implemented physical integration
of radar system areas at local and open air test sites.
Designed and directed building of digital
processing equipment rack and RF/Analog equipment rack, including
Initiated and designed Intranet web site for
RF/Analog Design Engineering unit.
Maintained CAE software tool upgrades and
performed user support.
Performed analysis and designed front end
for UHF/L-Band, 4-channel, direction-finding (DF) airborne receiving
system including BIT circuitry. Combination of connectorized and
discrete components employed in implementation of two chassis assemblies
and an 8-layer, surface-mount PCB.
Designed S/C-Band multi-octave front end for
8-channel DF system.
Completed project planning and design of test
station to support depot maintenance on a tracking and ranging S-Band
receiver employed in the Air Force Satellite Control Network (for
AlliedSignal Technical Services Co.). Design of 10 MHz distribution
unit, S-Band AM modulator, and creation of an overall testing philosophy
were my primary responsibilities.
Founded Waypoint Software in 1992 to market
TxRx Designer software.
Conceived of and wrote TxRx Designer software
(all versions) in Turbo Pascal. Wrote and published user’s manual.
Owner of all copyrights. TxRx Designer is a full-featured frequency
conversion and cascade analysis CAE package with a custom graphical
Created and implemented marketing plan for
advertisement in worldwide RF engineering journals. Instituted customer
response and order processing system.
Conceived of and wrote EE Ref software in
Turbo C++ for Windows. Owner of all copyrights.
Lead engineer for the redesign of a van-based
mobile interrogation system used in automated utility meter reading
(910 - 960 MHz). Performed system analysis for transmit and receive
subsystems. Eliminated long-standing modulation-induced spurious
output from transmitter while increasing output power. Designed
new low noise front end for downconverter. Specified higher performance
Tx/Rx duplexer. Modified receiver cards to improve bandwidth and
detector response. Wrote and performed extensive system test and
production test procedures. Very successful program.
Served as Design Engineering interface to
Manufacturing for production related issues on van-based and handheld
Designated test equipment for automated testing
in newly formed Engineering Test group.
Responsible for RF and analog design of a
Single-Channel-Per-Carrier earth station modem for the Inmarsat
satellite system. Incorporated an O-QPSK/BPSK modulator/demodulator
for translation of baseband voice/fax/data information to a 70 MHz
IF within a dense, multi-layer surface-mount board. Active and passive
filters, A/D, D/A, RF amplifiers, PIN attenuators, power splitters/combiners,
mixers, and a digital output power level setting with digital leveling
loop were employed. Designed monitor/control ELPD. Wrote interface
and test software. Thoroughly documented design and production test
Designed and implemented frequency extension
into existing analog transmitter and receiver for Inmarsat M/B system.
Performed detailed design verification tests and wrote automated
test software for production.
Specified and designed rack-mounted C-Band
upconverters and downconverters to Inmarsat specifications. Integrated
RF subsystem, SBC, custom interface PCB, and local/remote user interface.
Performed system analysis and hardware testing. Created documentation
for moving into production phase.
Participated in proposal writing on numerous
frequency conversion systems.
Designed Supervisory Control And Data Acquisition
(SCADA) installations for electrical substations.
Introduced volume production techniques to
facilitate large-scale SCADA installation effort.
Prepared test documentation and trained test
Worked with engineering team to design programmable,
multi-channel airborne L-Band downconverter.
Designed and documented hardware packaging
and substrates for hybrid RF, digital, and analog circuits.
Performed system cascade analysis of RF conversion
path using OmniSys and custom spreadsheet.
Major RFIC engineering & production company,
NC Presently: Applications Engineer
Agilent Technologies, Loveland, CO 7/00
- 8/01: Systems Engineer
Xetron Corporation, Cincinnati, OH 2/99
- 4/00: Senior Hardware Design Engineer
Stanford Telecommunications, Colorado Springs,
CO 7/98 - 1/99: Senior System Engineer
Lockheed Martin, OR&SS Syracuse, NY 8/96
- 6/98: Principle Hardware Design Engineer
Harris Corporation , GASD Melbourne, FL 1/96
- 7/96: RF Engineer
System Technology Associates, Colorado Springs,
CO 8/95 - 1/96: System Engineer
Waypoint Software, Colorado Springs, CO 11/94
- 8/95: Senior RF Engineer / Owner
Itron, Waseca, MN 11/93 - 10/94: Senior RF
Comsat Corporation, Clarksburg, MD 11/90 -
10/93: RF Engineer II
Potomac Edison, Hagerstown, MD 4/90 - 10/90:
General Electric, AESD, Utica, NY 5/89 - 3/90:
Simmonds Precision Instruments, Vergennes,
VT 3/86 - 9/87: Sr. Electronics Technician
Westinghouse Electric, Annapolis, MD
2/82 - 3/86
U.S.A.F., Robins AFB, GA 11/78 - 1/82:
ATC Radar Repair Technician
Technological University (NTU) Ft. Collins, Colorado
Some Master’s level classes in microwave engineering curriculum
of Vermont (UVM) Burlington, Vermont (Spring 1989)
Bachelor of Science in electrical engineering, 3.74/4.00 GPA, Magna
Arundel Community College (AACC) Arnold, Maryland (Spring 1987)
Associate in electrical engineering transfer program, 3.6/4.0 GPA
U.S.A.F. Air Traffic Control Radar Repair
School Keesler AFB, Mississippi (Fall 1979)
Honor Graduate, 96/100 average
Test Equipment Familiarity:
Spectrum analyzer, oscilloscope, frequency counter, power meter,
SINAD meter, frequency synthesizer, signal generator, DMM, gain/phase
meter, I/Q test set, network analyzer, logic analyzer, arbitrary waveform
generator, VSWR meter, noise figure meter, audio analyzer, modulation
analyzer, passive intermodulation (PIM) analyzer (including GPIB interface
CAE Design Tool Familiarity:
RF Workbench, OmniSys, Touchstone, ADS, OrCad, Altera, MicroSim
Spice, MicroCap, MicroLogic, AutoCad, Visio.
Currently inactive - have held TS, SBI
Owner and webmaster of RF Cafe web site (http://www.rfcafe.com),
1996 to present
Atwater Kent Engineering Excellence Award,
University of Vermont, 1989.
RF Design Software Contest,
1992 (article in 11/92 edition).
"A Graphical Approach To Mixer Spurious Product
Analysis", Wireless Design & Development, 5/96
Leisure Time Interests:
As a lifelong aviation
enthusiast, I spend as much time as possible building and flying model
aircraft of all types, including radio control ,free flight and
control line. Amateur astronomy, while a major pastime during my Air
Force years, is now a secondary hobby limited to monthly reading of
magazines. Computer programming and web site design manage to take a
large portion of my "free" time.
Here is my certificate for completing a National Radio Institute
(NRI) electronics technician course.
|Here is a photo of the
that was presented to me
at my graduation in 1989 from the
University of Vermont.
More than 10,000 searchable pages indexed.
Your RF Cafe
single-handedly redefining what an engineering website should be.
Progenitor & Webmaster
(Seize the Day!)
My USAF radar shop