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US 10,320,091 B2Granted
Array antenna for satellite communications and antenna
AssigneeMitsubishi Electric Corporation
InventorsKazuyoshi Yamashita, Tomohiro Takahashi
Life of this patent
Estimating the term…
Abstract
An array antenna for satellite communications includes a first sub-array and a second sub-array, each including a plurality of antenna elements arrayed in a matrix with a regular pitch, the first sub-array and the second sub-array being shifted relative to each other in a satellite orbital direction.
Claims6
An antenna comprising:
- a substrate;
- a first sub-array comprising a plurality of antenna elements arrayed on the substrate in a matrix that includes at least two rows and at least two columns;
- a second sub-array comprising a plurality of antenna elements arrayed on the substrate in a matrix that includes at least two rows and at least two columns;
- a third sub-array comprising a plurality of antenna elements arrayed in a matrix on the substrate;
- a fourth sub-array comprising a plurality of antenna elements arrayed in a matrix on the substrate;
- and
- a plurality of power-supply lines configured to supply power to the plurality of antenna elements of the first sub-array and to the plurality of antenna elements of the second sub-array, every power-supply line connected to an antenna element in the first sub-array having a same length and every power-supply line connected to an antenna element in the second sub-array having a same length, wherein
- the first sub-array and the second sub-array are arranged to be adjacent to each other in a short-side direction and to be shifted relative to each other in a long-side direction so that the at least two columns of the matrix of the second sub-array are shifted with respect to the at least two columns of the matrix of the first sub-array,
- a pitch in the short-side direction between all antenna elements in the first sub-array that are adjacent to the second sub-array and all antenna elements in the second sub-array that are adjacent to the first sub-array is the same as a pitch in the short-side direction between adjacent elements in the first sub-array and a pitch in the short-side direction between adjacent elements in the second sub-array,
- the third sub-array and the fourth sub-array are arranged to be adjacent to each other in a short-side direction and to be shifted relative to each other in a long-side direction,
- the third sub-array is arranged to be adjacent to the first sub-array in the long-side direction and to be shifted relative to the first sub-array in the short-side direction, and
- the fourth sub-array is arranged to be adjacent to the second sub-array in the long-side direction and to be shifted relative to the second sub-array in the short-side direction.
9 more elements
Dependencies are inferred from the claim text.