Crossed dipole antenna element
First Claim
1. A crossed dipole antenna element comprising first and second dipoles, each dipole having a pair of arms, each arm having a first portion extending from a central axis and a second portion extending out of a plane including the first portion and the central axis, wherein the second portions of the arms of the first dipole extend in a first rotational direction and the second portions of the arms of the second dipole extend in a second rotational direction.
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Accused Products
Abstract
A crossed dipole antenna element comprising first and second dipoles, each dipole having a pair of arms, each arm having a first portion extending from a central axis and a second portion extending out of a plane including the first portion and the central axis. In certain embodiments the second portions of the arms of the first dipole extend in a first rotational direction and the second portions of the arms of the second dipole extend in a second rotational direction. This improves the isolation performance of the antenna. In certain embodiments the second portion of each arm branches out at an intermediate position along the length of the arm. This improves the bandwidth performance of the antenna.
60 Citations
27 Claims
- 1. A crossed dipole antenna element comprising first and second dipoles, each dipole having a pair of arms, each arm having a first portion extending from a central axis and a second portion extending out of a plane including the first portion and the central axis, wherein the second portions of the arms of the first dipole extend in a first rotational direction and the second portions of the arms of the second dipole extend in a second rotational direction.
- 13. A crossed dipole antenna element comprising first and second dipoles, each dipole having a pair of arms, each arm including a first portion extending from a central axis and a second portion extending out of a plane including the first portion and the central axis, wherein the second portion of each arm branches out from the arm at an intermediate position along the length of the arm.
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26. A method of manufacturing a crossed dipole antenna element comprising first and second dipoles, each dipole having a pair of arms, each arm having a first portion extending from a central axis and a second portion extending out of a plane including the first portion and the central axis, wherein the second portions of the arms of the first dipole extend in a first rotational direction and the second portions of the arms of the second dipole extend in a second rotational direction, the method including forming the second portion of each arm by bending an end of the respective arm to one side.
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27. A method of manufacturing a crossed dipole antenna element comprising first and second dipoles, each dipole having a pair of arms, each arm including a first portion extending from a central axis, the method including splitting an end of each arm into two or more parts, and bending one or more of the parts to one side out of a plane including the first portion and the central axis.
Specification