Driver circuit
AssigneeSumitomo Electric Industries, Ltd.
InventorTaizo Tatsumi
Life of this patent
Estimating the term…
Abstract
A traveling wave amplifier includes two input-side lines, two output-side lines, and amplification cells. The amplification cells each include a first input terminal, a second input terminal, a first transistor including a base connected to the first input terminal and a collector connected to one output-side line, a second transistor including a base connected to the second input terminal and a collector connected to the other output-side line, a current source connected to an emitter of each of the two transistors, a first series circuit connected between the collector of the second transistor and the base of the first transistor and including a capacitor and a resistor, and a second series of circuit connected between the collector of the first transistor and the base of the second transistor and including a capacitor and a resistor.
Claims8
A driver circuit for amplifying two complementary input signals having phases opposite to each other and outputting two complementary output signals having phases opposite to each other, the driver circuit comprising:
- an input terminal for receiving the two complementary input signals;
- a first input-side transmission line for transmitting one of the two complementary input signals;
- a second input-side transmission line for transmitting the other of the two complementary input signals;
- a first output-side transmission line for transmitting one of the two complementary output signals;
- a second output-side transmission line for transmitting the other of the two complementary output signals;
- an output terminal for outputting the two complementary output signals;
- and
- a differential amplification circuit including
- a first input terminal electrically connected to the first input-side transmission line,
- a second input terminal electrically connected to the second input-side transmission line,
- a first transistor including a control terminal, a first current terminal, and a second current terminal, the control terminal of the first transistor being electrically connected to the first input terminal, and the second current terminal of the first transistor being electrically connected to the second output-side transmission line,
- a second transistor including a control terminal, a first current terminal, and a second current terminal, the control terminal of the second transistor being electrically connected to the second input terminal, and the second current terminal of the second transistor being electrically connected to the first output-side transmission line,
- a current source electrically connected to the first current terminal of the first transistor and the first current terminal of the second transistor,
- a first series circuit having one end electrically connected to the second current terminal of the second transistor and another end electrically connected to the first input terminal, the first series circuit including a first capacitor and a first feedback resistance element connected to the first capacitor in series,
- a second series circuit having one end electrically connected to the second current terminal of the first transistor and another end electrically connected to the second input terminal, the second series circuit including a second capacitor and a second feedback resistance element connected to the second capacitor in series, and
- a first emitter follower circuit and a second emitter follower circuit, wherein
- the first input terminal and the control terminal of the first transistor are electrically connected to each other via the first emitter follower circuit, and
- the second input terminal and the control terminal of the second transistor are electrically connected to each other via the second emitter follower circuit.
A driver circuit for amplifying two complementary input signals having phases opposite to each other and outputting two complementary output signals having phases opposite to each other, the driver circuit comprising:
- an input terminal for receiving the two complementary input signals;
- a first input-side transmission line for transmitting one of the two complementary input signals;
- a second input-side transmission line for transmitting another the other of the two complementary input signals;
- a first output-side transmission line for transmitting one of the two complementary output signals;
- a second output-side transmission line for transmitting the other of the two complementary output signals;
- an output terminal for outputting the two complementary output signals;
- and
- a differential amplification circuit including
- a first input terminal electrically connected to the first input-side transmission line,
- a second input terminal electrically connected to the second input-side transmission line,
- a first emitter follower circuit,
- a second emitter follower circuit,
- a first transistor including a control terminal, a first current terminal, and a second current terminal, the control terminal of the first transistor being electrically connected to the first input terminal via the first emitter follower circuit, and the second current terminal of the first transistor being electrically connected to the second output-side transmission line,
- a second transistor including a control terminal, a first current terminal, and a second current terminal, the control terminal of the second transistor being electrically connected to the second input terminal via the second emitter follower circuit, and the second current terminal of the second transistor being electrically connected to the first output-side transmission line,
- a current source electrically connected to the first current terminal of the first transistor and the first current terminal of the second transistor,
- a first series circuit having one end electrically connected to the second current terminal of the second transistor and the other end electrically connected to the control terminal of the first transistor, the first series circuit including a first capacitor and a first feedback resistance element connected to the first capacitor in series, and
- a second series circuit having one end electrically connected to the second current terminal of the first transistor and the other end electrically connected to the control terminal of the second transistor, the second series circuit including a second capacitor and a second feedback resistance element connected to the second capacitor in series.
Dependencies are inferred from the claim text.