Branch-line coupler
AssigneesHONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., Hon Hai Precision Industry Co., Ltd.
InventorYU-CHIH CHUEH
Life of this patent
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Abstract
A branch-line coupler suitable for use in mobile devices includes a first, second, third, and fourth ports, respectively acting as input, transmitted, coupled, and isolated port. A first, second, third, and fourth connection parts are connected to the ports and transmission lines. First and second bent transmission lines are electrically connected between first and second ports. Third and fourth bent transmission lines are electrically connected between third and fourth ports. A first long strip transmission line is electrically connected between the first port and the fourth port. A second long strip transmission line is electrically connected between the second port and the third port. The branch-line coupler occupies a small area and has high performance.
Claims10
A branch-line coupler, comprising:
- an input port, a transmitted port, a coupled port, and an isolated port;
- a first connection part, a second connection part, a third connection part and a fourth connection part, successively electrically connected to the input port, the transmitted port, the coupled port and the isolated port;
- a first bent transmission line and a second bent transmission line, electrically connected between the input port and the transmitted port;
- a third bent transmission line and a fourth bent transmission line, electrically connected between the coupled port and the isolated port;
- a first long strip transmission line, electrically connected between the input port and the isolated port;
- and
- a second long strip transmission line, electrically connected between the transmitted port and the coupled port.
Dependencies are inferred from the claim text.