Archive for August, 2011

Webcast: Passive Components: Dividers, Couplers, Combiners

Wednesday, August 31st, 2011

The Besser Associates/Microwave Journal webcast series continues this month. Instructor Robert Froelich will discuss RF dividers, couplers, and combiners on Tuesday September 20 at 8AM Pacific Time.

Outline:
Power Dividers
• 2-way, 3-way and N-way
• Isolation and loss
• Phase relationships
• Uneven power division
• Combining RF power

Directional Couplers
• Properties
• Coupling, Isolation, and Directivity

Power Splitters and Resistive Dividers

Registration is available via the Microwave Journal Website.

Dr. Froelich will be teaching the Applied RF Techniques I course in Irving, TX this November. Follow the links below for more information:

Applied RF Techniques I
Nov 14-Nov 18, 2011 Course 001-4427
Presented by Bob Froelich Register by 10/10/2011 and pay $2095, otherwise pay $2295 Register Online

Sign up for the Power Amplifier ABC’s Web Course

Wednesday, August 10th, 2011

Learn the basics of RF Power Amplifier design via the web. This 7.5 hour course is divided up into five daily sessions, each lasting 1.5 hours. Students sign in to the web conference in real time with the instructor each day. The program aims to bring participants up to speed on the basics of RF power amplifier design and operation in the shortest possible amount of time. Considerable attention is devoted to defining, classifying, and improving the efficiency and linearity of power amplifiers. Numerous design examples are provided for participant exploration.

Upon completing the course, the participant will be able to:

  • Design low distortion and efficient power amplifiers.
  • Bias power amplifiers for class A, A/B, B, and C operation
  • Understand the tradeoffs among the classes of operation.
  • Design amplifiers for gain or power or a compromize of the two.
  • Describe several techniques used to linearize power amplifier output.
  • Utilize modern circuit simulators and a simple system simulator.
  • Understand the effect of harmonics on PA performance.

Allen Podell, an IEEE Life Fellow, has designed monolithic and discrete circuits on gallium arsenide, silicon, sapphire, and plastic. With a solid foundation in device-circuit interaction, he specializes in the practical realization of modern circuit techniques. An author of over 70 technical papers, he founded three companies (Anzac Electronics, Podell Associates, and Pacific Monolithics) and he holds 60 US patents ranging from IMPATT diodes, silicon power transistors, and 3-decade bandwidth microwave components, stereo demodulators, antennas, gallium arsenide integrated circuits – and more recently, high power, wideband components. Previously, as VP of Technology at Besser Associates and later at Podell Consulting, he has taught advanced wireless design courses and provided consulting services worldwide.

Power Amplifier ABC’s
Sep 12-Sep 16, 2011 Course 216-4398
Presented by Allen Podell Register by 9/5/2011 and pay $449, otherwise pay $495 Register Online

Modulation/Signal Formats & Measurements Added to San Jose in December

Friday, August 5th, 2011

Practical Digital Wireless Signals – Measurements and Characteristics

This popular lecture and measurement based course is designed to provide all participants with a physically intuitive understanding of wireless communication signals and why they work the way they do. Based on feedback from students, the material has been expanded to five days to allow more time for measurement demonstrations. With the growing impact of wireless communications on the basic operation of society, the need for a more general understanding of the basis for this technology is more important than ever.

This course approaches wireless communications signals through the window of physics and physical principles. While a solid understanding of the mathematical theory of wireless communications signals is essential for detailed system design and analysis, the fundamental choices in system application and approach are often best approached physically. We do not shun math in this presentation, but instead of using math as the presentation base we instead use it as a follow up illustrator of the principles discussed.

The five days cover all of the major modulations used in digital wireless communication, including ASK, FSK, PSK, QAM, and OFDM. Spread spectrum operation is included, comparing the relative performances of Direct Sequence (DS) and Frequency Hopping (FH) techniques. System principles are also presented such as an extensive discussion of the Shannon Capacity Limit, the physical basis of Nyquist filtering, plus an introduction to antennas and wireless signal propagation. Important system parameters and analysis tools which are common to any modulation type are presented and demonstrated. Public course attendees will receive a copy of the book – Practical Digital Wireless Signals by Dr. Earl McCune.

Dr. McCune has over 35 years of experience in wireless communication technology, systems, and circuit design. He has learned across this career that a thorough understanding of physical fundamentals is essential to avoid making huge mistakes, providing an extremely useful check on mathematical derivations and computer simulations (not to mention young engineers!).

Earl holds over 40 US patents, and is frequently an invited speaker at conferences worldwide. He is a graduate of UC Berkeley, Stanford, and UC Davis. He has been a Silicon Valley entrepreneur since 1986, starting up two groundbreaking technology companies that both provided successful exits to the investors. His work experience includes NASA, Hewlett-Packard, Watkins-Johnson, Cushman Electronics, Digital RF Solutions (start-up #1), Proxim, Tropian (start-up #2), and Panasonic. He is now a semi-retired consultant, instructor, and visiting professor at multiple universities.

Practical Digital Wireless Signals – Measurements and Characteristics
Dec 5-9, 2011 Course 210-4462
Presented by Earl McCune Jr. Register by 10/31/2011 and pay $2095, otherwise pay $2295 Register Online

Public Course Schedule Update – Winter/Spring 2012

Wednesday, August 3rd, 2011

The public course schedule for Winter/Spring 2012 is now published on our website. Look for an updated schedule PDF to be posted soon as well. The key updates are:

Follow the links to see which courses may interest you in the coming year!