Ultra-small size broadband coupler
AssigneeKorea Electronics Technology Institute
InventorsKi Jin Kim, Kwang Ho Ahn, Soo Chang Chae
Life of this patent
Estimating the term…
Abstract
There is provided an ultra-small size broadband coupler. A Lange coupler according to an embodiment includes: first lines which are formed in a spiral shape, and have a first port and a second port formed at one end thereof and have connection ends formed at the other end thereof; and second lines which are formed in a spiral shape, and have connection ends formed at one end thereof to be connected to the connection ends of the first lines, and have a third port and a fourth port formed at the other end thereof. Accordingly, the Lange coupler maintains broadband characteristics while minimizing its area, so that it is possible to design a small component for mobile communication and to noticeably reduce an insertion loss.
Claims14
A Lange coupler comprising:
- first lines which are formed in a spiral shape, and have a first port and a second port formed at one end thereof and have connection ends formed at the other end thereof;
- and
- second lines which are formed in a spiral shape, and have connection ends formed at one end thereof to be connected to the connection ends of the first lines, and have a third port and a fourth port formed at the other end thereof,
- wherein respective lengths of the first lines and the second lines are λ/8.
A Lange coupler comprising:
- first lines which are formed in a spiral shape, and have a first port and a second port formed at one end thereof and have connection ends formed at the other end thereof;
- and
- second lines which are formed in a spiral shape, and have connection ends formed at one end thereof to be connected to the connection ends of the first lines, and have a third port and a fourth port formed at the other end thereof,
- wherein the connection ends of the first lines are positioned inside the spiral shape formed by the first lines,
- wherein the connection ends of the second lines are positioned inside the spiral shape formed by the second lines, and
- wherein the Lange coupler further comprises inter-connection lines which connect the connection ends of the first lines and the connection ends of the second lines through vias, wherein the inter-connection lines are positioned on upper portions of the first lines and the second lines.
A Lange coupling method comprising:
- receiving a signal through a first port and a second port formed at one end of first lines;
- and
- outputting a signal through a third port and a fourth port which are formed at the other end of second lines which have one end connected to the first lines,
- wherein the first lines are formed in a spiral shape, and have the first port and the second port formed at one end thereof and have connection ends formed at the other end thereof,
- wherein the second lines are formed in a spiral shape, and have connection ends formed at one end thereof to be connected to the connection ends of the first lines, and have the third port and the fourth port formed at the other end thereof, and
- wherein respective lengths of the first lines and the second lines are λ/8.
Dependencies are inferred from the claim text.