Microstrip Line Directional Coupler
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United States of America Patent
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Issued Date -
Jun 22, 2017
app pub date -
Dec 15, 2016
filing date -
Dec 16, 2015
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Abstract
An apparatus, e.g. a radio-frequency (RF) coupler, includes first and second microstrip lines. First and second coupling fingers extend from the first microstrip line into the space, and a third coupling finger extends from the second microstrip line into the space about centered between the first and second coupling fingers. Fourth and fifth coupling fingers extend from the first microstrip line into the space, and a sixth coupling finger extends from the second microstrip line into the space about centered between the fourth and fifth coupling fingers. The second and fourth coupling fingers are adjacent each other with a distance between them along the first transmission line exceeding a distance between the first and second coupling fingers along the first transmission line by at least a factor of about two.
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