Tuesday, July 31, 2012

Join my Startup! Wanted: 3D Visualization Software Engineer

Ready for a career change?  Want to try something new and exciting?   Join my startup!

Skills & Experience

The successful candidate will be:
·      Familiar with current 3D display technologies
·      Experienced with developing 3D visualization tools
·      Proficient at GUI development, visualizations, rendering and system level abstractions
·      Capable of implementing high frame rate, real-time imaging control systems
·      Able to keep up with rapidly evolving system requirements and gracefully handle emergent problems in high pressure situations

Personal Characteristics

In addition, the ideal candidate:
·      Has Butterfly Network “DNA” (extremely intelligent, driven to change the world, creative, and flexible)
·      Able and willing to think “out of the box” and not afraid to question the status quo or challenge others
·      Possesses effective communication skills with diverse levels of staff and executive management
·      Is emotionally intelligent and resilient
·      Enjoys rising to new challenges and can handle multiple priorities simultaneously
·      Has uncompromised ethics and integrity
·      Loves problem solving

Apply Now

To apply send your CV to info@butterflynetinc.com with the subject line ‘ 3D Visualization Software Engineer.’

More Information:


Monday, July 30, 2012

Tell us about your phased array research: Call for papers, 2013 IEEE Intl. Symposium on Phased Array Sys. & Tech

During recent decades, phased array systems have made major steps forward with the development of many major radar and communications systems. due to many recent advances, including MMIC, photonics, and digital beamforming, phased array systems and technology continue to progress rapidly. Current and future developments of ground-based, sea-based, airborne, and space-based phased array radar, communications, and other electronic systems will be discussed at this international symposium.

Phased Array 2013, the 5th IEEE international symposium presenting advanced in phased array systems and technologies, will be held at the Westin Hotel, Waltham, Massachusetts on Boston’s famous Route 128.

Poster Presentations

Student Paper Competition

Special Sessions

Sunday, July 29, 2012

Elgin Men's wrist watch, cleaning and repair

This vintage wrist watch was a straight forward clean, oil, and adjustment.  It is an Elgin men's wrist watch, also very small compared to today's men's watches.

Saturday, July 28, 2012

An Amazing Real-Time Implementation of the Coffee Can Radar: Ranging with Cantenna Radar

Dear Dr. Charvat,

My name is Mihai Albu. I used to work at the Haystack Observatory as an undergraduate and I saw your wednesday lunch talk about wall penetrating radar. I'm currently a graduate student at Umass Lowell and I'm working at one of their compact radar ranges. Long story short, I stumbled on your cantenna OCW site one night while perusing the Make magazine site to look for ideas for a new spare time project and I built a 3.4GHz variation of your design. (I had a spare VCO from a previous project and I didn't want to spend a lot). I've attached a picture of it. Initially, I used your matlab scripts for imaging but I also wrote a real-time processing program in Matlab using the Data Aquisition Toolbox. Here is a link of it in actionhttps://dl.dropbox.com/u/62321343/20120424_1615_07.avi . I keep going back and tweaking the design in my free time; my next step(s) will be to replace the current ramp generator with an ADC and integrator to get a smoother ramp and also to redesign the antennas to get a narrower beamwidth. (The current antennas are asparagus cans with a simulated HPBW of 72 degrees which is similar to the values you got with the coffee can antenna). I wanted to thank you for posting this project; it has been a key foothold for a number of important concepts and so much fun that it almost feels like cheating.

Mihai Albu

Nice Work Mihai!!

Tuesday, July 24, 2012

Join us for the Next Generation Medical Imaging Workshop: Innovations Enabled by Advances in Computing, Signal Processing, and Sensor Technology

Consider joining us for the:

To present and discuss the latest medical imaging developments that are facilitated by the newest game-changing technologies and suggest future approaches and collaborations.
Next generation life-saving medical imaging technologies will leverage the vast computational power afforded by alternative computing platforms—such as graphics processor units (GPUs) and field programmable gate arrays (FPGAs)—enabling us to explore previously intractable imaging problems.  New signal processing techniques, such as compressed sensing and sparse reconstruction algorithms, can produce high-fidelity and real-time imagery using relatively few measurements. Advances in sensing devices, architecture, and sensor configurations will offer sophisticated measurement techniques and provide the foundations for new imaging modalities.
In this workshop, participants will discuss how these technologies could be used to develop new imaging approaches and techniques as well as improve current methodologies. A speaker should be asked to bring his/her questions to spur discussion which might lead to solutions, new approaches, or different applications.

Wednesday, July 18, 2012

Amazing Youtube Channel on the topic of pocket watch and wrist watch repair

This is quickly becoming my favorite youtube channel:

Excellent narrative, good camera angles (you can actually see all of the small watch parts), this channel shows the fun of restoring pocket and wrist watches.

It's a fascinating hobby, i encourage those who are interested in working with gears and small machines to consider.

Monday, July 16, 2012

Saturday, July 14, 2012

Attention UC Davis Students: sign up now for EEC193 Senior Design Project: FMCW Radar, based on and expanded on the MIT Build a Radar Course

Xiaoguang Liu lxgliu@ucdavis.edu
Jul 4 (10 days ago)
to me
Hi Greg

I'd like to give you a little update on the project. Obviously as you already know, I've convinced our department to open an experimental senior design course using your radar kit (and thank you for putting links to our flyer on your website). 

So far we have a pretty good turn out with 16 registered students and probably more coming (I've set an upper limit of 20). This is quite significant given that our total EE students are around 80-90. 

Over the last quarter, I worked with a group of undergraduate student to build the radar and got some initial results (http://www.ece.ucdavis.edu/~lxgliu/sd_radar/2012fall/UCDavis_ECE_RF_SeniorDesign.pdf). As you can see we are using some really big horns because the students think they look really cool. 

Right now, I'm trying to get external support for the course. So I wonder if you could include a link to the project public webpage (http://ucdart.net/Teaching) in your blog entry and your cantenna radar webpage. 

Have a great July 4th!


Wednesday, July 11, 2012

Sign up now, learn about phased array radar by making your own, an MIT Short-Course offering

Are you interested in learning about phased array radar systems by building and testing your own?
MIT Professional Education is offering a unique course in the design, fabrication, and test of a laptop-based digital phased array radar sensor capable of ground moving target imaging (GMTI). Lectures will be presented on the topics of applied electromagnetics, antennas, RF design, analog circuits, radar system modeling, and digital signal processing while at the same time you build your own phased array radar system and perform field experiments. Each student will receive a radar kit, designed by MIT Lincoln Laboratory staff, and a course pack.

Tuesday, July 10, 2012

WANTED: Business Leader for Butterfly Network Inc.

For those of you with a business background who are excellent negotiators and fans of Mr. Vacuum Tube, please consider the following:

Job Description

  • Looking for a driven person to negotiate technology licenses from universities and small companies.  A natural negotiator with great common sense, high-bandwidth, a sense of urgency, and the ability to understand key elements of a wide range of technologies.  
  • Must be able to quickly negotiate consulting and advisory agreements with academics and define appropriate fields of exclusivity, and put in place contracts with small companies while maintaining full ownership and control of all work products. 
  • Excellent opportunity for this individual to learn how to start and rapidly build new high technology ventures in medical, alternative energy, and other high technology fields with significant societal impact. 

To reply:


Sunday, July 8, 2012

FYI Schedule of MSU Presentations 2012 AP/URSI International Symposium

Schedule of MSU Presentations
2012 AP/URSI International Symposium

Monday, July 9

Best student paper – Ozgur Tuncer
Interactive Forum, Mayfair room, 2:00-5:00 PM

13:20 152.1 Plasmonic Waveguide Coupling at Terahertz Frequencies
J. C. Myers, C. S. Meierbachtol, J. A. Hejase, P. Chahal, Michigan State University, United States

15:40 165.7 Analysis of Scattering from Complex, Electrically Large Structures Using the Generalized Method of Moments
N. V. Nair M. Vikram, B. Shanker, Michigan State University, United States

Tuesday, July 10

10:40 208.2 An O(N_s N_t Log^2 N_t) TDIE Solver for Scattering from Periodic Quasiplanar Domains
D. Dault, B. Shanker, Michigan State University, United States

11:20 208.4 An Acceleration Technique for Computing Fields from a Periodic Source above a Layered Medium
D. Dault1, J. Gao1,2, S. Balasubramaniam1
1Michigan State University, United States; 2Ansys, Inc., United States

10:40 212.2 A Discontinuous Galerkin Framework for Hybridizing VGFEM and FEM
O. Tuncer, B. Shanker, L. C. Kempel, Michigan State University, United States

IF22.9 A Maxwell-Bloch Solver for the Analysis of Nanocavity Optics Problems
N. Miller, A. Baczewski, D. Dault, C. Piermarocchi, B. Shanker, Michigan State University, United States

14:20 255.4 A Center-Fed Half-Width Microstrip Leaky-Wave Antenna with an Adjustable Principal Beam
K. Akinlabi-Oladimeji, J. Tang, A. Temme, E. J. Rothwell, P. Chahal, L. C. Kempel, R. O. Ouedraogo, Michigan State Univ, United States

Wednesday, July 11

08:20 311.1 A Novel Methodology for the Shape Optimization of Electromagnetic Scattering Targets
N. V. Nair, B. Shanker, Michigan State University, United States

10:40 315.7 A Hybrid Basis Function Technique for the Solution of Scattering from Complex Structures Using the Generalized Method of Moments
D. Dault, N. V. Nair, B. Shanker, Michigan State University, United States

IF35.12 Radiation by an Inductively-Loaded Half-Width Leaky-Wave Antenna
M. T. Corwin1, R. D. Penno2, S. W. Schneider1, E. J. Rothwell3, S. Balasubramaniam3, L. C. Kempel3
1Air Force Research Labs, United States; 2University of Dayton, United States; 3Michigan State University, United States

13:40 351.2 A Terahertz Photonic Crystal Structure for Sensing Applications
L. C. Acosta Silveira, J. A. Hejase, P. Chahal, Michigan State University, United States

14:20 351.4 Miniaturization of Microstrip Band Stop Filter Using a Novel Periodic Structure
K. Y. Park, N. Wiwatcharagoses, P. Chahal, Michigan State University, United States

Thursday, July 12

08:20 412.1 A Stable Higher Order TDIE Solver Using a Separable Approximation for Convolution with the Retarded Potential
A. J. Pray, N. V. Nair, B. Shanker, Michigan State University, United States

10:40 412.6 Time Domain Integral Equation Solver for Composite Scatterers Using a Separable Expansion for Convolution with the Retarded Potential
A. J. Pray, N. V. Nair, B. Shanker, Michigan State University, United States

11:00 412.7 Self-Consistent Modeling of Higher Pressure Microwave PACVD Reactors
C. S. Meierbachtol, T. A. Grotjohn, B. Shanker, Michigan State University, United States

08:40 415.2 A Singularity Cancellation Technique on Arbitrary Higher Order Patch Descriptions
N. V. Nair1, A. J. Pray1, J. Villa-Giron2, B. Shanker1, D. R. Wilton3
1Michigan State University, United States; 2AFRL, United States; 3University of Houston, United States

11:20 415.9 An Hp-Refinement Scheme for Surface Integral Equations Using the Generalized Method of Moments
N. V. Nair, B. Shanker, Michigan State University, United States

IF43.9 A Metamaterial-Inspired High-Q X-Band Oscillator
K. Y. Park, N. Wiwatcharagoses, P. Chahal, Michigan State University, United States

16:00 451.8 Experimental Characterization of Origami Tunable Frequency Selective Surfaces
J. Tang, K. Fuchi, E. J. Rothwell, A. R. Diaz, R. O. Ouedraogo, Michigan State Univ, United States

13:40 459.2 Reconfigurable Slotted Microstrip Patch Using VO2
R. A. Rodríguez Solís1, N. Sepúlveda2, H. L. Pacheco González1, N. Dávila2
1University of Puerto Rico, United States; 2Michigan State University, United States

15:20 462.6 Construction of an hp-refinement Technique for Transient Scattering Using the Generalized Method of Moments
A. J. Pray, N. Nair, B. Shanker, Michigan State University, United States

Friday, July 13

501.4 Self-Consistent Modeling of Quantum Electronic Devices in the Presence of Electromagnetic Fields
C. S. Meierbachtol, O. Tuncer, B. Shanker, Michigan State University, United States

09:20 504.4 Characterization of Gyromagnetic Material Using a Reduced Aperture Waveguide
B. R. Crowgey, O. Tuncer, E. J. Rothwell, B. Shanker, L. C. Kempel, Michigan State Univ, United States; M. J. Havrilla, Air Force Institute of Technology, United States

10:40 509.7 A Modified Split Ring Resonator Loaded Miniaturized Reconfigurable Antenna
N. Wiwatcharagoses, K. Y. Park, P. Chahal, Michigan State University, United States

14:00 552.3 Embedded Actives for Heterogenous Integration of Millimeter Wave Circuits
X. Yang, K. Y. Park, P. Chahal, Michigan State University, United States


11:20 409.9 A Reconfigurable Antenna with Magnetically-Coupled Switches
R. A. Fenner, K. E. Lenz, J. M. Tomasic, Loyola University Maryland, United States

08:20 403.1 Operator Processing
C. M. Coleman, Integrity Applications Inc., United States

09:00 403.3 The NASA Debris Radar for Characterizing Static and Dynamic Ascent Debris Events for Safety of Flight
B. M. Kent, P. Ryan, C. Thomas, Air Force Research Laboratory - Sensors Directorate, United States

13:20 263.1 IE Analysis of Scattering from Multilayered Doubly Periodic Array of 3-D General Objects Using Equivalence Principle and Connection Scheme
F.-G. Hu, Temasek Labs @NUS, Singapore; J. Song, Iowa State University, USA; T. Kamgaing, Intel Corporation, USA

IF12.6 Scattering Problems Involving Three-Dimensional Non-Local Wire Metamaterials Based on a Transport Model
G. W. Hanson, E. Forati, University of Wisconsin Milwaukee, United States

IF13.10 Recent Advances in the Homogenization Theory of Wire Media with Applications at Microwaves, THz, and Optical Frequencies
A. B. Yakovlev1, M. G. Silveirinha2, S. I. Maslovski2, C. S. R. Kaipa1, P. A. Belov3,4, G. W. Hanson5, O. Luukkonen6, I. S. Nefedov7, C. R. Simovski7, S. A. Tretyakov7, Y. R. Padooru1
1University of Mississippi, United States; 2University de Coimbra, Instituto de Telecomunicacoes, Portugal; 3National Research University of Information Technologies, Mechanics and Optics, Russia; 4Queen Mary University of London, UK; 5University of Wisconsin-Milwaukee, United States; 6Nokia Research Center, Finland; 7Aalto University, Finland

15:20 153.6 Excitation of Discrete and Continuous Spectrum of Graphene
G. W. Hanson, University of Wisconsin, Milwaukee, United States; A. B. Yakovlev, University of Mississippi, United States

IF21.6 Generalized Additional Boundary Conditions and Analytical Model for Multilayered Mushroom-Type Wideband Absorbers
Y. R. Padooru1, A. B. Yakovlev1, C. S. R. Kaipa1, G. W. Hanson2, F. Medina3, F. Mesa3, A. W. Glisson1
1University of Mississippi, United States; 2University of Wisconsin-Milwaukee, United States; 3University of Seville, Spain

10:40 513.7 Electromagnetic Modeling of Nonlinear, Spatially-Dispersive Materials
G. Hanson, University of Wisconsin, Milwaukee, United States

10:40 106.2 Simulations of the Millimeter-Wave Interferometric Signature of Walking Humans
J. A. Nanzer, Johns Hopkins University, United States

IF16.4 Correction of Frequency Uncertainty in the Interferometric Measurement of Moving Humans
J. A. Nanzer, Johns Hopkins University, United States; A. H. Zai, University of Colorado at Boulder, United States

IF21.2 Dispersion Analysis of Printed-Circuit Tensor Impedance Surfaces
A. M. Patel, A. Grbic, University of Michigan - Radiation Laboratory, United States

60-GHz CMOS on-Chip Corrugated Linear Tapered Slot Antenna
Y.-H. Chuang1, K.-H. Tsai2, H.-R. Chuang1
1National Cheng Kung University, Taiwan; 2HTC Corporation, Taiwan

Former Visiting Scholars

IF11.8 Design Consideration of Closely Spaced Polarization- and Pattern-Diversity Antenna Pair
C.-P. Lai, S.-Y. Chen, Graduate Institute of Communication Engineering National Taiwan University, Taiwan; H.-J. Li, Department of Electrical Engineering National Taiwan University, Taiwan

IF14.2 Microwave Surface Plasmon Effect Realized by Uniaxial Wire Medium
L.-Y. Ou-Yang, S.-Y. Chen, National Taiwan University, Taiwan

14:20 262.4 A Varactor-Loaded Cross Dipole Unit Cell for Circularly Polarized Beam-Steering Reflectarray
W.-T. Hung, S.-Y. Chen, National Taiwan University, Taiwan

IF34.10 Design of Antenna on Package Exploiting Self- Resonance of Carrier Board
M.-H. Cheng, C.-P. Lai, Graduate Institute of Communication Engineering, National Taiwan University, Taiwan; H.-C. Yen, K.-H. Liao, Advanced Semiconductor Engineering Inc., Taiwan; S.-Y. Chen, Department of Electrical Engineering, National Taiwan University, Taiwan

16:40 361.10 General Rules for Objective Functions in Wide- and Multi-Band Pixelized Antenna Design
Y.-S. Chen, Y.-C. Chan, H.-J. Li, S.-Y. Chen, National Taiwan University, Taiwan

08:40 401.2 Circularly Polarized Resonant Cavity Antenna Using Single-Layer Double-Sided FSS Superstrate
S.-C. Chiu, S.-Y. Chen, Graduate Institute of Communication Engineering, Taiwan

Session chair assignments

Monday, July 9 13:20-16:40 Missouri
Session 162 AP-S/URSI
Parallel and Special-Processor Based Numerical Methods
Session Chairs: Elia Attardo, Leo Kempel

Tuesday, July 10 10:20-12:00 Missouri
Session 208 AP-S
Time-Domain Numerical Methods
Session Chairs: Shanker Balasubramaniam, Yang Liu

Wednesday, July 11 13:20-17:00 Chicago VI
Session 351 AP-S
Electromagnetic Bandgap Materials 2
Session Chairs: Prem Chahal, Ladislau Matekovits

Thursday, July 12 8:20-12:00 Missouri
Session 412 AP-S
Transients and Time-Domain Techniques
Session Chairs: Shanker Balasubramaniam, Tapan SARKAR

Friday, July 13 8:20-12:00 Chicago VI
Session 501 AP-S/URSI
Hybrid Methods and Method Comparisons
Session Chairs: Raj Mittra, Shanker Balasubramaniam

Friday, July 13 8:20-12:00 Superior A
Session 509 AP-S
Frequency Configurable Antennas II
Session Chairs: Prem Chahal, Satish Sharma

Friday, July 13 8:20-12:00 Chicago IX
Session 504 URSI
Guided Waves and Wave-Guiding Structures
Session Chairs: Edward Rothwell, Ryan Adams