Switching amplifier and transmitter using same
AssigneeNEC Corporation
InventorShinichi Hori
Life of this patent
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Abstract
The present invention is applied to a switching amplifier that includes a first high-side gate and a first low-side gate having output terminals connected together, and a high-side driver and a low-side driver that drive the first high-side gate and the first low-side gate, respectively. In the switching amplifier of the present invention, the high-side driver includes an input switching amplifier that uses the output terminal of the first high-side gate as a power source.
Claims12
A switching amplifier that includes a first high-side gate and a first low-side gate having output terminals connected together and a high-side driver and low-side driver that drive said first high-side gate and said first low-side gate, respectively, wherein:
- said high-side driver includes an input switching amplifier that uses an output terminal of said first high-side gate as a power source;
- and
- said high-side driver further includes a relay amplifier having an input terminal connected to an output terminal of said input switching amplifier and an output terminal connected to an input terminal of said first high-side gate.
A switching amplifier that includes a first high-side gate and a first low-side gate having output terminals connected together and a high-side driver and low-side driver that drive said first high-side gate and said first low-side gate, respectively, wherein:
- said high-side driver includes an input switching amplifier that uses an output terminal of said first high-side gate as a power source;
- wherein said input switching amplifier includes a resistor and an internal amplifier element, and said resistor is connected between the output terminal of said first high-side gate and the output terminal of said internal amplifier element;
- and
- said input switching amplifier further includes an inductor, and said inductor is connected in a series with said resistor.
A switching amplifier that includes a first high-side gate and a first low-side gate having output terminals connected together and a high-side driver and low-side driver that drive said first high-side gate and said first low-side gate, respectively, wherein:
- said high-side driver includes an input switching amplifier that uses an output terminal of said first high-side gate as a power source;
- and
- said first high-side gate, said first low-side gate, said high-side driver, and said low-side driver form a first buffer circuit;
- the switching amplifier further comprising:
- a second high-side gate having an input terminal connected to an output terminal of said first buffer circuit;
- and
- a second low-side gate;
- wherein said second high-side gate and said second low-side gate have output terminals that are connected together.
A switching amplifier that includes a first high-side gate and a first low-side gate having output terminals connected together and a high-side driver and low-side driver that drive said first high-side gate and said first low-side gate, respectively, wherein:
- said high-side driver includes an input switching amplifier that uses an output terminal of said first high-side gate as a power source;
- the switching amplifier further comprising:
- two sets, each set being made up by said first high-side gate, said first low-side gate, said high-side driver, and said low-side driver, one set forming a first buffer circuit and the other set forming a second buffer circuit;
- a second high-side gate having an input terminal connected to an output terminal of said first buffer circuit;
- and
- a second low-side gate having an input terminal connected to an output terminal of said second buffer circuit;
- wherein said second high-side gate and said second low-side gate have output terminals that are connected together.
Dependencies are inferred from the claim text.