Crossover performance of power amplifier
First Claim
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1. An amplifier arrangement comprising:
- a main push-pull amplifier, including a first transistor and a second transistor, and connected to receive an input signal and generate an amplified version of the input signal; and
an additional amplifier, connected to receive the input signal and generate an amplified version thereof;
wherein the outputs of the main amplifier push-pull amplifier including the first and the second transistors and the additional amplifier are combined to provide an amplified output, andwherein during operation in a crossover region of the main push-pull amplifier including the first and the second transistors, the bandwidth of the additional amplifier is greater than the bandwidth of the main push-pull amplifier including the first and the second transistors.
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Abstract
There is provided an amplifier arrangement comprising: a main amplifier connected to receive an input signal and generate an amplified version of the input signal; an additional amplifier, having a smaller geometry than the main amplifier, connected to receive the input signal and generate an amplified version thereof; and wherein the outputs of the main amplifier and the additional amplifier are combined to provide an amplified output.
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Citations
20 Claims
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1. An amplifier arrangement comprising:
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a main push-pull amplifier, including a first transistor and a second transistor, and connected to receive an input signal and generate an amplified version of the input signal; and an additional amplifier, connected to receive the input signal and generate an amplified version thereof; wherein the outputs of the main amplifier push-pull amplifier including the first and the second transistors and the additional amplifier are combined to provide an amplified output, and wherein during operation in a crossover region of the main push-pull amplifier including the first and the second transistors, the bandwidth of the additional amplifier is greater than the bandwidth of the main push-pull amplifier including the first and the second transistors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of amplifying an input signal comprising:
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amplifying the input signal in a main push-pull amplifier including a first transistor and a second transistor, and generating an amplified version of the input signal; amplifying the input signal in an additional amplifier to generate an amplified version thereof; and combining the amplified versions of the input signal to provide an amplified output, wherein during operation in a crossover region of the main push-pull amplifier including the first and the second transistors, the bandwidth of the additional amplifier is greater than the bandwidth of the main push-pull amplifier including the first and the second transistors. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification