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Introduction to Transmission Line Transformers and the Bifilar Coil

Introduction to Transmission Line Transformers and the Bifilar Coil

Learn how a bifilar coil can be used to design transformers for high-frequency RF applications.


Understanding the Non-Idealities of Magnetically Coupled RF Transformers

Understanding the Non-Idealities of Magnetically Coupled RF Transformers

In this article, we’ll learn about the limitations of magnetically coupled transformers in RF applications by modeling the devices' high-frequency non-idealities.


New Microchip Ethernet Switches Include TSN and Range of Port Bandwidths

New Microchip Ethernet Switches Include TSN and Range of Port Bandwidths

The new Ethernet switches offer scalable bandwidths, time-sensitive networking (TSN), and two separate redundancy protocols for increased reliability.


News Jan 22, 2024 by Arjun Nijhawan
Balun Basics and Practical Performance Parameters

Balun Basics and Practical Performance Parameters

Learn about the balun, a special type of transformer used in mixers, amplifiers, and signaling.


Basic Principles of the Push-Pull Class B Power Amplifier

Basic Principles of the Push-Pull Class B Power Amplifier

Learn how a push-pull Class B amplifier functions, how to calculate its efficiency, and how its performance compares to the inductively-loaded Class A design.


Stepping Outside the Metaverse to Discuss Next-Gen Hardware Development

Stepping Outside the Metaverse to Discuss Next-Gen Hardware Development

After working at Apple on iPhones and at Microsoft on the Xbox 360 and Kinect, Agustya Mehta now helps develop leading-edge virtual reality products at Meta where they address the challenges of optimizing for performance, weight, and power.


MCUs, Modules, and Add-On Boards Lend Bluetooth Support

MCUs, Modules, and Add-On Boards Lend Bluetooth Support

Three Bluetooth offerings from STMicroelectronics, Mikroe, Atmosic, and GlobalScale aim to simplify the development of connected devices.


News Jan 13, 2024 by Jake Hertz
Introduction to the Class B Power Amplifier

Introduction to the Class B Power Amplifier

How does a Class B power amplifier work? What makes it more efficient than a Class A power amplifier? Learn the answers in this article.


Nokia and Rohde & Schwarz Win FCC Certification for Drone Network

Nokia and Rohde & Schwarz Win FCC Certification for Drone Network

Following successful collaboration with Rohde & Schwarz to secure FCC certification, Nokia Drone Networks has launched in North America.


News Jan 11, 2024 by Darshil Patel
Learn About Load-Pull Systems: Passive and Active Tuners

Learn About Load-Pull Systems: Passive and Active Tuners

In this article, we explore the types of impedance tuners most commonly used for load-pull measurement—their advantages, their disadvantages, and the methods by which they synthesize impedance.


Using the Load-Pull Technique in RF Power Amplifier Design

Using the Load-Pull Technique in RF Power Amplifier Design

The output power and efficiency of a power amplifier (PA) are highly dependent on its load terminations. Learn how to characterize a PA's performance by analyzing load lines and estimating the load-pull contours of constant output power.


Building and Certifying an Open-Source IoT Controller, Part 4: Regulatory Compliance

Building and Certifying an Open-Source IoT Controller, Part 4: Regulatory Compliance

In the final installment of our series on the development of the Anthilla Controller, we look at the legal requirements for bringing the project to market in the European Union.


Editor’s Choice: Our Top 10 News Articles of 2023

Editor’s Choice: Our Top 10 News Articles of 2023

Looking back on the year, here’s a review of the most popular News articles on All About Circuits.


News Dec 31, 2023 by Jeff Child
Introduction to the Inductively-Loaded Class A Power Amplifier

Introduction to the Inductively-Loaded Class A Power Amplifier

Learn how an inductively-loaded common-emitter stage can function as a power amplifier.


Happy Holidays—It’s a People Business We’re In, and It Always Has Been

Happy Holidays—It’s a People Business We’re In, and It Always Has Been

On this Christmas day, let’s remember that this is a people business. Enjoy this round up of 2023 articles about people that performed extraordinary engineering work throughout history.


News Dec 25, 2023 by Jeff Child
Introduction to Class A Power Amplifiers: The Common-Emitter PA

Introduction to Class A Power Amplifiers: The Common-Emitter PA

RF amplifier design is a challenging task, involving trade-offs between linearity, efficiency, gain, and output power. Here, we examine how a common-emitter circuit can, or can't, function as a power amplifier.


Using the Available Power Gain to Design a Bilateral Low-Noise Amplifier

Using the Available Power Gain to Design a Bilateral Low-Noise Amplifier

Learn how the available power gain concept can help us solve the problem of designing a bilateral RF amplifier for a specified gain and noise figure.


Learn About Designing Unilateral Low-Noise Amplifiers

Learn About Designing Unilateral Low-Noise Amplifiers

In this article, we learn about noise parameters and use Smith charts to design a unilateral low-noise amplifier (LNA) for a specified gain.


A Look Back on 50 Years With the Cellphone

A Look Back on 50 Years With the Cellphone

As we look back on 2023, we give tribute to the 50th anniversary of the cellphone. After half a century, this device is almost unrecognizable from its two-pound form in the 70s and 80s.


News Dec 11, 2023 by Aaron Carman
Is Every Conductor an Antenna?

Is Every Conductor an Antenna?

Learn how conductive circuit components can function as antennas, even when they aren't intended to.