1:9 BROADBAND TRANSMISSION LINE TRANSFORMER
First Claim
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1. A single-core transmission line transformer comprising:
- a first transmission line wound around a solid core of magnetic material;
a second transmission line wound around the solid core;
a first port interconnecting respective first ends of the first transmission line and the second transmission line in parallel;
a second port communicating with respective second ends of the first transmission line and the second transmission line; and
a third transmission line communicating with the first transmission line and the second transmission line without being wound around any solid core, the third transmission line comprising a first side communicating with the respective first ends of the first transmission line and the second transmission line, and a second side communicating with the respective second ends of the first transmission line and the second transmission line,wherein the impedance transformation ratio of the single-core transmission line transformer is 1;
9 in a direction from the first port to the second port.
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Abstract
A single-core transmission line transformer includes first, second and third transmission lines, and first and second ports. The first and second transmission lines are wound around a common core. The first port interconnects respective first ends of the first and second transmission lines in parallel. The second port communicates with respective second ends of the first and second transmission lines. The third transmission line communicates with the first and second transmission lines without being wound around any solid core. The impedance transformation ratio of the transformer is 1:9 in a direction from the first port to the second port.
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Citations
20 Claims
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1. A single-core transmission line transformer comprising:
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a first transmission line wound around a solid core of magnetic material; a second transmission line wound around the solid core; a first port interconnecting respective first ends of the first transmission line and the second transmission line in parallel; a second port communicating with respective second ends of the first transmission line and the second transmission line; and a third transmission line communicating with the first transmission line and the second transmission line without being wound around any solid core, the third transmission line comprising a first side communicating with the respective first ends of the first transmission line and the second transmission line, and a second side communicating with the respective second ends of the first transmission line and the second transmission line, wherein the impedance transformation ratio of the single-core transmission line transformer is 1;
9 in a direction from the first port to the second port. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for forming a single-core transmission line transformer, the method comprising:
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winding a first transmission line around a solid core of magnetic material; winding a second transmission line around the solid core; forming a first port by interconnecting respective first ends of the first transmission line and the second transmission line in parallel; forming a second port by placing respective second ends of the first transmission line and the second transmission line in communication with respective nodes of the second port; and placing a third transmission line in communication with the first transmission line and the second transmission line without being wound around any solid core, the third transmission line comprising a first side communicating with the respective first ends of the first transmission line and the second transmission line, and a second side communicating with the respective second ends of the first transmission line and the second transmission line, wherein the impedance transformation ratio of the single-core transmission line transformer is 1;
9 in a direction from the first port to the second port. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification