CLASTECH 2020, MTT and APS Meeting

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CLASTECH Will be online this year.  We have 4 great speakers.

Registration is free for the On-Line event. Click on the orange "Register Now" button

10 AM Simone Bastioli, "Nonresonating Modes Do It Better"
11 AM James M. Schellenberg, "MM-wave GaN Power Amplifiers: Technology to Power the Future"
12 PM Bill Milroy, Thinkom, "Commercial and Military Trends in Ground, Aeronautical, and Space-Based SATCOM Antennas"
1 PM   John Dunn, "Microwave Office: An Integrated Design Environment for Antenna Arrays in Packages"

We will follow the times so that you can log on for all of them, or just the talks you want to see.

 

CLASTECH 2020 at 10 AM on Friday Oct 23

 



  Date and Time

  Location

  Hosts

  Registration



This will be an online event

  • online
  • United States

Staticmap?size=250x200&sensor=false&zoom=14&markers=33.917028%2c 118
  • Co-sponsored by Coastal Los Angeles Section, AP03
  • Starts 12 September 2020 09:44 PM
  • Ends 21 October 2020 11:50 PM
  • All times are America/Los_Angeles
  • No Admission Charge
  • Register


  Speakers

Jim Schellenberg

Jim Schellenberg

Topic:

MM-wave GaN Power Amplifiers: Technology to Power the Future

Abstract:

The emergence of 5G cellular has created new interest in the millimeter-wave spectrum. This frequency band (30 to 300 GHz) remains a great untapped resource that must be utilized in order to realize the goals (5G and beyond) of the Internet and cell phone industries. There simply is not enough bandwidth at lower frequencies to satisfy future system requirements for speed and capacity. The millimeter-wave spectrum is also of great interest to military and industrial planners, where the enhanced resolution provided by greater bandwidths is necessary to meet future systems goals. Fortunately, a new device/materials technology has emerged which can meet these requirements. This is GaN on SiC substrates. MMICs fabricated with this high bandgap material offers a factor of 10 improvement in the power density compared with older technologies such as GaAs and InP.
This talk will focus on GaN MMIC technology and how it can address industry (commercial and military) power needs at millimeter-wave frequencies. I will first present where the technology currently is in terms of power, efficiency and frequency, and then present where it is headed. I will also present the factors limiting performance and cost and offer possible solutions.

Biography:

James Schellenberg   (S’68-M’71-SM’94-LSM’10) was born in Reedley, California in 1945. He received the B.S. degree in electrical engineering from Fresno State University, Fresno, CA in 1969, and the M.S. degree in electrical engineering from Johns Hopkins University, Baltimore, MD, in (S’68-M’71-SM’94-LSM’10) was born in Reedley, California in 1945. He received the B.S. degree in electrical engineering from Fresno State University, Fresno, CA in 1969, and the M.S. degree in electrical engineering from Johns Hopkins University, Baltimore, MD, in 1973.
From 1969 to 1978, he was employed by Westinghouse Electric Corporation, Advanced Technology Laboratories, in Baltimore, MD where he was responsible for bipolar and FET power amplifier/combiner design. From 1978 to 1988 he was employed by Hughes Aircraft Company, Microwave Products Division, in Torrance, CA. There he was responsible for many industry firsts in GaAs hybrid/monolithic IC technology, particularly at millimeter-wave frequencies. From 1988 to 2005 he was with Schellenberg Associates developing power MMICs for millimeter-wave applications. From 2005 to 2008 he worked for Trex Enterprises in Kahului, HI developing mm-wave imaging radars. In 2008 he joined QuinStar Technology as their Chief Engineer.

Mr. Schellenberg is the inventor of the radial-line power combiner (U.S. Patent No. 4,234,854) and the Dolph-Tchebycheff planar power combiner (U.S. patent 4,835,496) and has pioneered the development of hybrid/monolithic FET amplifiers/oscillators at millimeter-wave frequencies. He has been awarded the 1978 IR-100 Award for the FET radial line power combiner and the 1981 ISSCC Beatrice Winner Award. He is the author of 8 U.S. patents and more than 50 technical papers.

His current research interests include nonlinear analysis/modeling of power amplifiers, high-power broadband amplifiers/combiners and millimeter-wave GaN power MMICs.

Bill Milroy

Bill Milroy of Thinkom

Topic:

Commercial and Military Trends in Ground, Aeronautical, and Space-Based SATCOM Antennas

Abstract: Commercial and Military market trends over the past decade have created increased focus (and performance demands) on the Antenna as a key technical (and business) enabler.  24/7/365 connectivity to “the Cloud,” “M2M,”  “IoT,” and “5G,”  are the new broadband connectivity “mantras” and the resultant evolution and deployment of new GSO and NGSO constellations in support of these services have sharpened the focus across the greater Antenna “domain,” including Satellite Payload and User-Terminal antennas, as well as the associated Gateway and Teleport Infrastructure(s) that “close the link.”   This presentation will review the broader market “wants” and “needs,” and detail how one particular technology, the Variable Inclination Continuous Transverse Stub (VICTS) Array, is evolving to meet these diverse challenges and use-cases,  including specific Commercial and Government product and performance examples. 

 

William (Bill) Milroy

Chairman and CTO

ThinKom Solutions, Inc.

Biography:

WILLIAM W. MILROY,  Chairman and CTO , ThinKom Solutions, Inc.
www.thinkom.com  
EDUCATION:
Engr.  Electromagnetics (Minor: Circuits, Applied Math), UCLA
M.S.   Applied Electromagnetics, UCLA
B.S.    Electrical Engineering, UCLA
Prior to co-founding ThinKom (www.thinkom.com), William (Bill) Milroy held the position of Senior Engineering Fellow within the Electromagnetic Systems Department of Raytheon’s Electronic Systems (ES) Segment.  During his 20 year tenure at Raytheon (Hughes Aircraft), Mr. Milroy managed and led the RF antenna design, development, and production of a wide range of antenna array implementations for radar and communication applications in both the commercial and military marketplaces including 1-D and 2-D Electronically-Scanned Arrays (ESA’s).  These efforts have included the creation and invention of a number of innovative EM modeling and RF design improvements, including the invention of the Continuous Transverse Stub (CTS) Array and its variants.  He left Raytheon in May of 2000 in order to co-found and incorporate ThinKom Solutions, where he currently holds the titles of Chairman and CTO.  Located in Hawthorne, California, ThinKom Solutions is focused on the design and development of innovative antenna access solutions and products for the Broadband Wireless Communication market.   

Mr. Milroy is a graduate of the University of California at Los Angeles, earning BSEE, MSEE, and Engineer (Ph.D. course, field, and examination requirements) degrees and is a graduate of the Hughes (Raytheon) Corporate Program Manager Development Course (PMDC) and Engineering of Systems Course (EOSC) curricula and the Executive Marketing Program at UCLA’s Anderson School of Business Management.  He is the author or co-author of nine journal and symposia papers in the fields of Network Analysis, Circuits, Antennas, and Microwaves.  He is the inventor or co-inventor of more than thirty-five awarded and pending patents in the fields of Electromagnetic Scattering, Materials, Microwave Devices, and Antennas.  Mr. Milroy is a past Chairman of the Los Angeles Chapter of the IEEE Antennas and Propagation Society (APS), a periodic Guest Lecturer at the UCLA Anderson School of Business Management, and a Technical Reviewer for both the National Science Foundation (NSF) and the IEEE APS Transactions Journal.  





Agenda

10 AM Simone Bastioli, "Nonresonating Modes Do It Better"
11 AM James M. Schellenberg, "MM-wave GaN Power Amplifiers: Technology to Power the Future"
12 PM Bill Milroy, Thinkom, "Commercial and Military Trends in Ground, Aeronautical, and Space-Based SATCOM Antennas – The VICTS Phased-Array Antenna" 
1 PM   Dr. John Dunn, "Microwave Office: An Integrated Design Environment for Antenna Arrays in Packages"

Speaker: Simone Bastioli
Title: Nonresonating Modes Do It Better
Abstract: The innovative concept of nonresonating modes and how this has been recently exploited to extend the performance and capabilities of the state-of-art of microwave filter technology will be presented in this talk. Although the concept is presented by mostly focusing on filters, as these are the components where this new technique has found large application over the past few years, all general features are explained and illustrated in detail thus potentially paving the way for new applications involving other passive microwave components. After a brief discussion highlighting the importance of microwave filters from a system perspective, the main concept of the talk will be introduced by defining what is a nonresonating mode and by illustrating what are the benefits of this approach. The concept is then gradually explained by using some waveguide as well as planar SIW examples, as the rectangular waveguide technology is where these modes were first observed; most importantly, these examples have been proved to considerably ease the understanding of the concepts from both students and non-experts perspectives. The general multimode environment of these structures is described step-by-step and several animations are introduced during the explanation thus really allowing the audience to absorb the more general multimode concept that otherwise often remain an obscure myth for many microwave engineers. The presentation is then extended to the most various filter technologies, such as conventional coaxial structures, dielectric resonators based architectures, as well as more original mixed technologies. The presentation will also cover few examples regarding different applications such as three-port junctions for duplexing purposes, and showing how actually some well-established four-port components have indeed always “unconsciously” exploited some form of nonresonating modes. Several manufacturing examples of actual products developed at RS Microwave (Dr Bastioli‘s affiliation) are going to be presented along this talk, thus also satisfying the more practical taste of an industry audience.


Speaker: Dr. John Dunn,

Title: "Microwave Office: An Integrated Design Environment for Antenna Arrays in Packages"

Abstract: This presentation demonstrates how Cadence® AWR Design Environment® is being used in the design of phased-array systems in packages (SiPs). Several key new features have been designed into AWR® Microwave Office® circuit design software to make the designer’s task easier.
Phased arrays are a popular technology for implementation of 5G and radar applications. These arrays are a natural choice for RF designers who are searching for a compact antenna solution that can meet the performance criteria required of modern communication systems. The arrays are usually placed in a package or module with RF circuitry driving them, which presents two important challenges. First, the package must be accounted for because it can affect the antenna’s performance. Second, the array interacts with the driving circuitry because the array’s port impedances affect the performance of the amplifiers.
The ways in which these specific antenna design challenges are being addressed using AWR software will be discussed, including:
-The AWR AXIEM® and Analyst® integrated, 3D EM simulation environment for drawing and simulation of antenna arrays
-How circuit simulation results can be coupled with array performance using in-situ simulation
-How antenna arrays can be included in system-level simulations using AWR Visual System Simulator™ (VSS) system design software

5G system design examples will be presented.