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US 7,126,439 B2Granted
Bow tie coupler
AssigneeResearch In Motion Limited
InventorsYihong Qi, Perry Jarmuszewski, Michael Certain
Life of this patent
Estimating the term…
Abstract
A wide bandwidth coupler has two outer elements around a center element. The outer elements are rectangular at their outside portions and each have a tapered nose portion next to the center element. A matching network electrically connects the two outer elements and the center element. The center element is connected to a first portion of a signal feed structure, while one of the outer elements connects to a second portion of a signal feed structure.
Claims15
A coupler comprising:
- a first element having a rectangular portion and a tapered portion with a nose,
- a second element having a rectangular portion and a tapered portion with a nose
- a third element disposed between the nose of the first element and the nose of the second element,
- a matching network for electrically connecting the first element, the second element and the third element,
- wherein the coupler has a generally flat antenna gain curve over a frequency range of at least 800 to 2500 MHz and a max-min gain variation of no more than about 2.5 dB.
2 more elements
Dependencies are inferred from the claim text.