Class E power amplifier circuit and associated transmitter circuits
First Claim
1. A phase shift keying signal transmission circuit comprising a phase shift keying modulator and a class E power amplifier, the class E power amplifier comprising an active device, a first inductor, a DC blocking element and an oscillating element driven by a voltage signal and comprising a parallel LC resonant circuit connected in parallel with the active device, wherein the first inductor is connected in series between the active device and the DC blocking element,wherein the phase shift keying signal transmission circuit incorporates an analogue signal source connectable to a class E power amplifier bias voltage control means so that the analogue signal source modulates the output from the phase shift keying modulator.
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Abstract
A class E power amplifier circuit comprising an active device, a DC blocking element and an oscillating element, wherein the oscillating element is driven by a voltage signal.
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Citations
16 Claims
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1. A phase shift keying signal transmission circuit comprising a phase shift keying modulator and a class E power amplifier, the class E power amplifier comprising an active device, a first inductor, a DC blocking element and an oscillating element driven by a voltage signal and comprising a parallel LC resonant circuit connected in parallel with the active device, wherein the first inductor is connected in series between the active device and the DC blocking element,
wherein the phase shift keying signal transmission circuit incorporates an analogue signal source connectable to a class E power amplifier bias voltage control means so that the analogue signal source modulates the output from the phase shift keying modulator.
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2. An amplitude modulated signal transmission circuit comprising an amplitude modulator and a class E power amplifier, the class E power amplifier comprising an active device, a first inductor, a DC blocking element and an oscillating element driven by a voltage signal and comprising a parallel LC resonant circuit connected in parallel with the active device, wherein the first inductor is connected in series between the active device and the DC blocking element,
wherein the amplitude modulated signal transmission circuit comprises an input signal splitting means and a voltage control means wherein the input signal splitting means splits a digital input signal into a series of multiple bit words, wherein at least one bit of a resulting word is transmitted to the voltage control means to control the bias voltage of the class E power amplifier and wherein the remaining bits of the resulting word are transmitted to the amplitude modulator for amplification by the class E power amplifier.
Specification