This article uses 3D models of the frequency spectrum to demystify the complex mathematical concepts, such as the Hilbert transform and the shifting property,…
This article uses 3D models of the frequency spectrum to demystify the complex mathematical concepts, such as the Hilbert transform and the shifting property, that make the phasing method possible.
We discuss the basics of implementing digital predistortion in RF power amplifier systems and explore two popular…
We discuss the basics of implementing digital predistortion in RF power amplifier systems and explore two popular techniques based on look-up tables.
SSB modulation improves bandwidth efficiency by eliminating either the upper or lower sideband. Learn about the circuits…
SSB modulation improves bandwidth efficiency by eliminating either the upper or lower sideband. Learn about the circuits and mathematics that make this possible without the use of sharp filters.
We explore the basic concepts of analog predistortion for linearizing RF amplifiers and review some common implementations.
We explore the basic concepts of analog predistortion for linearizing RF amplifiers and review some common implementations.
Learn about a classic amplitude modulation (AM) technique that’s been used in voice transmission for nearly a century.
Learn about a classic amplitude modulation (AM) technique that’s been used in voice transmission for nearly a century.
Learn about an important design technique for high-power RF transmitters: feed-forward linearization, which operates on…
Learn about an important design technique for high-power RF transmitters: feed-forward linearization, which operates on the principle of distortion signal cancellation.
We examine RF demodulation circuits used for both double-sideband suppressed carrier (DSB-SC) signals and double-sideband…
We examine RF demodulation circuits used for both double-sideband suppressed carrier (DSB-SC) signals and double-sideband signals with a carrier.
We explore the implementation and design equations of the second-harmonic peaking amplifier.
We explore the implementation and design equations of the second-harmonic peaking amplifier.
This article highlights a selection of circuits used for amplitude modulation, including a switching modulator built with…
This article highlights a selection of circuits used for amplitude modulation, including a switching modulator built with just one diode and a circuit that incorporates a Class C power amplifier.
Using the second-harmonic peaking amplifier as an example, we explore the basic principles of inverse Class F amplification.
Using the second-harmonic peaking amplifier as an example, we explore the basic principles of inverse Class F amplification.
Among modulator circuits, the ring modulator stands out as one of the most effective for generating AM signals. Learn why…
Among modulator circuits, the ring modulator stands out as one of the most effective for generating AM signals. Learn why in this article.
Learn how this power amplifier uses a quarter-wavelength transmission line to achieve up to 100% efficiency.
Learn how this power amplifier uses a quarter-wavelength transmission line to achieve up to 100% efficiency.
Using the example of a diode-bridge modulator, we examine the basic principles of switching modulators for AM signal generation.
Using the example of a diode-bridge modulator, we examine the basic principles of switching modulators for AM signal generation.
We explore how adding a small amount of voltage ripple to a Class F amplifier increases its efficiency, then work through…
We explore how adding a small amount of voltage ripple to a Class F amplifier increases its efficiency, then work through a design example.
Learn how the balanced modulator addresses shortcomings of the square-law modulator when generating DSB-SC and…
Learn how the balanced modulator addresses shortcomings of the square-law modulator when generating DSB-SC and conventional AM signals.
In this article, we derive the design equations for the third-harmonic peaking Class F amplifier with the flattest…
In this article, we derive the design equations for the third-harmonic peaking Class F amplifier with the flattest possible collector voltage waveforms.
In this article, we explore the foundational concepts of square-law modulators and examine some circuit implementations.
In this article, we explore the foundational concepts of square-law modulators and examine some circuit implementations.
This article explores the basic principles of Class F operation and introduces the third-harmonic-peaking Class F amplifier.
This article explores the basic principles of Class F operation and introduces the third-harmonic-peaking Class F amplifier.
Learn about conventional AM, an amplitude modulation technique commonly used in commercial radio broadcasting.
Learn about conventional AM, an amplitude modulation technique commonly used in commercial radio broadcasting.
In this article, we discuss a tuning method designed specifically for Class E RF amplifiers.
In this article, we discuss a tuning method designed specifically for Class E RF amplifiers.
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