Along with introducing Carson's rule for bandwidth estimation, this article explains how to calculate the required transmission bandwidth based on either the…
Along with introducing Carson's rule for bandwidth estimation, this article explains how to calculate the required transmission bandwidth based on either the sidebands or the total power of the signal.
Learn how Bessel functions and the modulation index can help us understand the bandwidth of wideband frequency-modulated…
Learn how Bessel functions and the modulation index can help us understand the bandwidth of wideband frequency-modulated (FM) signals.
This article explores the effect of signal bandwidth on the linearity of power amplifiers, including the impacts of…
This article explores the effect of signal bandwidth on the linearity of power amplifiers, including the impacts of cascaded RF gain stages.
In this article, we’ll use phasor diagrams to compare narrowband FM and conventional AM. We’ll also discuss the…
In this article, we’ll use phasor diagrams to compare narrowband FM and conventional AM. We’ll also discuss the problem of oscillator phase noise and work through an example problem.
Using the third-order intercept point (IP3) metric, we examine how the nonlinearity of individual gain stages in a…
Using the third-order intercept point (IP3) metric, we examine how the nonlinearity of individual gain stages in a cascaded RF system affects the linearity performance of the cascade as a whole.
Learn to calculate the upper and lower limits of a circuit’s dynamic range and spurious-free dynamic range (SFDR).
Learn to calculate the upper and lower limits of a circuit’s dynamic range and spurious-free dynamic range (SFDR).
Learn why phase modulation (PM) and frequency modulation (FM) can produce waveforms that are nearly identical or…
Learn why phase modulation (PM) and frequency modulation (FM) can produce waveforms that are nearly identical or completely different from one another, depending on the nature of the message signal.
Learn to confidently determine intermodulation distortion products and the third-order intercept point of RF circuits by…
Learn to confidently determine intermodulation distortion products and the third-order intercept point of RF circuits by working through a selection of example problems.
The output of a power amplifier can be a function of both present and past input values. In this article, we explore how…
The output of a power amplifier can be a function of both present and past input values. In this article, we explore how to characterize this important non-ideality.
Using phasors, we explore how real-valued bandpass signals are represented as complex baseband signals in the models used…
Using phasors, we explore how real-valued bandpass signals are represented as complex baseband signals in the models used by RF communication systems.
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 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 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.
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.
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.
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.
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.
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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