Method of producing a horn antenna array and antenna array
First Claim
1. A method of producing a horn antenna array including at least two horn antenna elements which are arranged along a first direction,each horn antenna element includinga horn, anda base having a slot extending along a second direction which intersects the first direction, the base closing the horn at one end,the horn includinga pair of electrically-conductive first inner walls each intersecting the first direction,a pair of electrically-conductive second inner walls each intersecting the second direction, anda bridge being continuous with the pair of second inner walls and extending along the second direction, the bridge having two electrically conductive faces respectively opposing the pair of first inner walls,the production method comprising:
- providing a first die and a second die;
assembling the first and second dies, filling an internal space surrounded by the first and second dies with a fluid material, and solidifying the fluid material; and
,after the material has solidified, separating the first and second dies and retrieving a molding therefrom, wherein,in a portion corresponding to each horn antenna element, the first die has a pair of protrusions and a groove between the pair of protrusions;
in a portion corresponding to each horn antenna element, the second die has a protrusion; and
,in a state where the first and second dies are assembled,at least a portion of the protrusion of the second die is located in the groove of the first die, anda gap exists between a tip end of the protrusion of the second die and a bottom face of the groove of the first die,wherein,the bottom face of the groove of the first die defines a front-side surface of the bridge of the horn of each horn antenna element;
two side faces which are continuous with the bottom face of the groove of the first die define the two electrically conductive faces of the bridge;
portions of the surface of the pair of protrusions of the first die define the pair of first inner walls of the horn; and
a tip-end surface of the protrusion of the second die defines a rear-side surface of the bridge.
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Accused Products
Abstract
A method of producing a horn antenna array includes: a step of providing a first die and a second die; a step of assembling the first die and the second die, filling an internal space surrounded by the first die and the second die with a fluid material, and solidifying the fluid material; and a step of, after the material has solidified, separating the first die and the second die. In a portion corresponding to each horn antenna element, the first die has a pair of protrusions and a groove between the pair of protrusions, and the second die has a protrusion. In a state where the first die and the second die are assembled, a gap exists between a tip end of each protrusion of the second die and a bottom face of each groove.
41 Citations
20 Claims
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1. A method of producing a horn antenna array including at least two horn antenna elements which are arranged along a first direction,
each horn antenna element including a horn, and a base having a slot extending along a second direction which intersects the first direction, the base closing the horn at one end, the horn including a pair of electrically-conductive first inner walls each intersecting the first direction, a pair of electrically-conductive second inner walls each intersecting the second direction, and a bridge being continuous with the pair of second inner walls and extending along the second direction, the bridge having two electrically conductive faces respectively opposing the pair of first inner walls, the production method comprising: -
providing a first die and a second die; assembling the first and second dies, filling an internal space surrounded by the first and second dies with a fluid material, and solidifying the fluid material; and
,after the material has solidified, separating the first and second dies and retrieving a molding therefrom, wherein, in a portion corresponding to each horn antenna element, the first die has a pair of protrusions and a groove between the pair of protrusions; in a portion corresponding to each horn antenna element, the second die has a protrusion; and
,in a state where the first and second dies are assembled, at least a portion of the protrusion of the second die is located in the groove of the first die, and a gap exists between a tip end of the protrusion of the second die and a bottom face of the groove of the first die, wherein, the bottom face of the groove of the first die defines a front-side surface of the bridge of the horn of each horn antenna element; two side faces which are continuous with the bottom face of the groove of the first die define the two electrically conductive faces of the bridge; portions of the surface of the pair of protrusions of the first die define the pair of first inner walls of the horn; and a tip-end surface of the protrusion of the second die defines a rear-side surface of the bridge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification