Slot array antenna, and radar, radar system, and wireless communication system including the slot array antenna
First Claim
1. A slot array antenna comprising:
- a first electrically conductive member including a first electrically conductive surface and a plurality of slots therein, the plurality of slots being arrayed in a first direction which extends along the first electrically conductive surface and in a second direction which intersects the first direction;
a second electrically conductive member including a second electrically conductive surface which opposes the first electrically conductive surface;
a plurality of waveguide members arrayed between the first and second electrically conductive members along a third direction which intersects the first direction, each waveguide member including an electrically conductive waveguide face which extends along the first direction so as to oppose at least two slots among the plurality of slots, the waveguide face having a uniform stripe shape extending across positions opposing the at least two slots, the waveguide face extending entirely through the at least two slots when viewed from a fourth direction which is normal to the waveguide face; and
an artificial magnetic conductor in a subregion which is within a region between the first and second electrically conductive members, but which is outside of a subregion containing the plurality of waveguide members, whereinthe artificial magnetic conductor comprises a plurality of electrically conductive rods arrayed on the second electrically conductive member;
no electric wall exists in a space between two adjacent waveguide faces of two adjacent waveguide members among the plurality of waveguide members; and
one row of electrically conductive rods is provided between the two adjacent waveguide members.
3 Assignments
0 Petitions
Accused Products
Abstract
A slot array antenna includes: a first conductive member having a first conductive surface and a plurality of slots therein, the slots being arrayed in a first direction and in a second direction which intersects the first direction; a second conductive member having a second conductive surface which opposes the first conductive surface; a plurality of waveguide members arrayed between the first and second conductive members along a direction which intersects the first direction, each waveguide member having an conductive waveguide face which extends along the first direction so as to oppose at least one of the slots; and an artificial magnetic conductor in a subregion which is within a region between the first and second conductive members but outside of a subregion containing the waveguide members. Neither an electric wall nor an artificial magnetic conductor exists in a space between two adjacent waveguide faces among the waveguide members.
58 Citations
27 Claims
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1. A slot array antenna comprising:
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a first electrically conductive member including a first electrically conductive surface and a plurality of slots therein, the plurality of slots being arrayed in a first direction which extends along the first electrically conductive surface and in a second direction which intersects the first direction; a second electrically conductive member including a second electrically conductive surface which opposes the first electrically conductive surface; a plurality of waveguide members arrayed between the first and second electrically conductive members along a third direction which intersects the first direction, each waveguide member including an electrically conductive waveguide face which extends along the first direction so as to oppose at least two slots among the plurality of slots, the waveguide face having a uniform stripe shape extending across positions opposing the at least two slots, the waveguide face extending entirely through the at least two slots when viewed from a fourth direction which is normal to the waveguide face; and an artificial magnetic conductor in a subregion which is within a region between the first and second electrically conductive members, but which is outside of a subregion containing the plurality of waveguide members, wherein the artificial magnetic conductor comprises a plurality of electrically conductive rods arrayed on the second electrically conductive member; no electric wall exists in a space between two adjacent waveguide faces of two adjacent waveguide members among the plurality of waveguide members; and one row of electrically conductive rods is provided between the two adjacent waveguide members. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A slot array antenna, comprising:
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a first electrically conductive member including a first electrically conductive surface and a plurality of slots therein, the plurality of slots being arrayed in a first direction which extends along the first electrically conductive surface and in a second direction which intersects the first direction; a second electrically conductive member including a second electrically conductive surface which opposes the first electrically conductive surface; a plurality of waveguide members arrayed between the first and second electrically conductive members along a direction which intersects the first direction, each waveguide member including an electrically conductive waveguide face which extends along the first direction so as to oppose at least one of the plurality of slots; and an artificial magnetic conductor in a subregion which is within a region between the first and second electrically conductive members but outside of a subregion containing the plurality of waveguide members, wherein the artificial magnetic conductor comprises a plurality of electrically conductive rods each including a leading end opposing the first electrically conductive surface and a root connected to the second electrically conductive surface; and neither an electric wall nor an electrically conductive rod exists in a space between two adjacent waveguide faces of two adjacent waveguide members among the plurality of waveguide members. - View Dependent Claims (23, 24, 25, 26, 27)
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Specification