Branch-line coupler
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United States of America Patent
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Feb 13, 2018
Issued Date -
N/A
app pub date -
Jul 1, 2016
filing date -
Jul 1, 2016
priority date (Note) -
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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.
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