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A Brief History of Timekeeping: Part 1
From sundials to quartz oscillators, and how MEMS is trying to take over the quartz market.
6
Star Wars: SpaceX vs AST SpaceMobile
A celestial battle between the two companies and their telco partners who are all going pew-pew over out-of-band emissions.
8
The Promise of Terahertz Technology
THz radiations finds unique applications in astronomy, medicine and communications, but not without its own distinct challenges.
2

September 2024

Phase Change Materials: Is it the Future of RF Switch Technology?
How a material that acts like glass or metal depending on applied voltage can be used to control the flow of radio frequency signals, and how it…
A Brief History of RF Switch Technology
From PIN diodes, RF MEMS, MESFETs, and HEMTs to RF silicon-on-insulator technology, how the evolution of a circuit as simple as a switch is much more…
 • 
Vikram Sekar
How Foundries Calculate Die Yield
Understanding the metric that Intel used to abandon a whole technology node.
 • 
Vikram Sekar
9
The Extraordinary Properties of Artificial Metamaterials
Understanding how a class of manmade materials can seemingly defy the laws of physics
 • 
Vikram Sekar
8
How Origami-Inspired Phased Arrays are Reshaping the Future of Antennas
Folding antennas into different shapes to create near infinite radiation patterns.
 • 
Vikram Sekar
 and 
Hani Al Jamal

August 2024

ABCs of Power Amplifier Classes: Class AB and C
How operating in Class AB can overcome cross-over distortion in Class B push-pull amplifiers, getting near 100% efficiency in Class C, and understanding…
 • 
Vikram Sekar
ABCs of Power Amplifier Classes: Class B
Trading off amplifier linearity for better efficiency, why harmonic traps are needed, how push-pull architecture is used for broadband circuits, and the…
 • 
Vikram Sekar
2
ABCs of Power Amplifier Classes: Class A
Design, operation and characteristics of the most linear amplifier class of all.
 • 
Vikram Sekar
2

July 2024

ABCs of Power Amplifier Classes: Foundations
Basic concepts required to understand classes of operation in power amplifiers.
 • 
Vikram Sekar
2
© 2024 Vikram Sekar
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