In this article, we'll use practical examples to define and demonstrate the concept of electrical balance. In particular, we’ll examine differential signals…
In this article, we'll use practical examples to define and demonstrate the concept of electrical balance. In particular, we’ll examine differential signals and coax currents.
Learn how an analog multiplier or AND gate can function as a quadrature detector for FM demodulation.
Learn how an analog multiplier or AND gate can function as a quadrature detector for FM demodulation.
Learn how the Foster-Seeley discriminator, a classic analog circuit for FM demodulation, achieves its superior linearity.
Learn how the Foster-Seeley discriminator, a classic analog circuit for FM demodulation, achieves its superior linearity.
In this article, we'll analyze the single-tuned discriminator for FM-to-AM conversion. We'll then discuss the balanced…
In this article, we'll analyze the single-tuned discriminator for FM-to-AM conversion. We'll then discuss the balanced discriminator and how it provides improved linearity across a wider bandwidth.
In this article, we will examine the basic principles of FM demodulation through the simplest frequency discriminator: a…
In this article, we will examine the basic principles of FM demodulation through the simplest frequency discriminator: a differentiator.
In this article, we'll solidify our understanding of the reactance modulator and Armstrong modulator circuits by working…
In this article, we'll solidify our understanding of the reactance modulator and Armstrong modulator circuits by working through a series of design problems.
This article explores the concept of indirect FM generation and the basic operation of the Armstrong modulator.
This article explores the concept of indirect FM generation and the basic operation of the Armstrong modulator.
In this article, we examine two different methods of producing wideband FM signals. Both use crystal oscillators to…
In this article, we examine two different methods of producing wideband FM signals. Both use crystal oscillators to provide improved frequency stability.
In this article, we explore the limitations of LC oscillators for direct FM generation and how to deal with them using…
In this article, we explore the limitations of LC oscillators for direct FM generation and how to deal with them using multipliers and automatic frequency control (AFC) circuits.
Learn how a varactor diode's variable capacitance, together with an LC tank circuit, can drive a voltage-controlled…
Learn how a varactor diode's variable capacitance, together with an LC tank circuit, can drive a voltage-controlled oscillator (VCO) to create FM waveforms.
In this article, we examine a reactance modulator design that employs the variable capacitance of a bipolar junction…
In this article, we examine a reactance modulator design that employs the variable capacitance of a bipolar junction transistor to modulate the output of a Colpitts oscillator.
In this article, we'll introduce the fundamental concepts of direct FM generation and examine a key FM modulation…
In this article, we'll introduce the fundamental concepts of direct FM generation and examine a key FM modulation circuit: the reactance modulator.
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.
In this project article, we'll use a 555 timer IC to build an iconic musical instrument from the early days of synthesizers.
In this project article, we'll use a 555 timer IC to build an iconic musical instrument from the early days of synthesizers.
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.
In this article, we examine the effects of RF choke non-idealities on Class E amplifier performance and learn how to…
In this article, we examine the effects of RF choke non-idealities on Class E amplifier performance and learn how to choose the right choke inductance for your amplifier design.
In this article, we examine the oscillation behavior of an LED blinker circuit in QSPICE and learn how to control its…
In this article, we examine the oscillation behavior of an LED blinker circuit in QSPICE and learn how to control its ON-time and pulse repetition frequency.
In this article, we analyze the operation of the Class E amplifier and examine the underlying assumptions of its design equations.
In this article, we analyze the operation of the Class E amplifier and examine the underlying assumptions of its design equations.
Class E RF amplifiers are designed to produce switch waveforms with a specific set of characteristics. In this article,…
Class E RF amplifiers are designed to produce switch waveforms with a specific set of characteristics. In this article, we discuss the advantages and limitations of these waveforms.
Learn how Class E amplifiers improve on the efficiency of Class D amplifiers at RF frequencies.
Learn how Class E amplifiers improve on the efficiency of Class D amplifiers at RF frequencies.
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