In this article, we'll illustrate the usefulness of Carson's rule for bandwidth estimation by working through a series of example problems.
In this article, we'll illustrate the usefulness of Carson's rule for bandwidth estimation by working through a series of example problems.
In this article, we'll investigate how varying the amplitude and frequency of the modulating tone impacts the bandwidth…
In this article, we'll investigate how varying the amplitude and frequency of the modulating tone impacts the bandwidth of FM signals. We'll also compare the modulation index in AM and FM schemes.
Along with introducing Carson's rule for bandwidth estimation, this article explains how to calculate the required…
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.
In this article, we’ll learn about the essential properties of Bessel functions and what they can tell us about the…
In this article, we’ll learn about the essential properties of Bessel functions and what they can tell us about the bandwidth of practical FM signals.
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.
Using a simple example, this article examines the frequency spectra of frequency-modulated (FM) and phase-modulated (PM)…
Using a simple example, this article examines the frequency spectra of frequency-modulated (FM) and phase-modulated (PM) waves for a low modulation index.
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.
In this article, we’ll explore the mathematical relationship between phase modulation (PM) and frequency modulation…
In this article, we’ll explore the mathematical relationship between phase modulation (PM) and frequency modulation (FM). We’ll then learn how a PM modulator can be used to generate FM signals, and vice versa.
Learn how the two-tone input test helps us evaluate the nonlinearity of RF systems operating on real-world signals.
Learn how the two-tone input test helps us evaluate the nonlinearity of RF systems operating on real-world signals.
In this article, we introduce the basic principles of phase modulation (PM) and use example waveforms to clarify the…
In this article, we introduce the basic principles of phase modulation (PM) and use example waveforms to clarify the often-confusing relationship between the PM wave and the message signal.
Using graphical representations to support our mathematical analysis, we walk through the process of how the Weaver…
Using graphical representations to support our mathematical analysis, we walk through the process of how the Weaver modulator transforms the signal frequency spectrum.
Gain compression causes power systems to transition from linear to nonlinear operation. Learn how the 1 dB compression…
Gain compression causes power systems to transition from linear to nonlinear operation. Learn how the 1 dB compression point is used to define the limits of linear operation.
Learn about the Weaver modulator, an RF circuit that improves on older forms of SSB modulation by removing the need for…
Learn about the Weaver modulator, an RF circuit that improves on older forms of SSB modulation by removing the need for either sharp bandpass filters or quadrature phase shifters.
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.
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