发明名称 |
POST-WALL WAVEGUIDE BASED SHORT SLOT DIRECTIONAL COUPLER, BUTLER MATRIX USING THE SAME AND AUTOMOTIVE RADAR ANTENNA |
摘要 |
A short slot directional coupler includes a dielectric substrate having both surfaces each covered by a metal film, a first via-hole string and a second via-hole string, each of which has via-holes penetrating through the substrate, and formed so that a distance between the first via-hole string and the second via-hole string is narrow at a center of a length direction of the string and wider along directions of both ends of the string, and a pair of third via-hole strings each having via-holes penetrating through the substrate, and formed between parts adjacent to both ends of the first via-hole string and parts adjacent to both ends of the second via-hole string to form a first post-wall waveguide along with the first via-hole string and a second post-wall waveguide along with the second via-hole string.
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申请公布号 |
US2009303145(A1) |
申请公布日期 |
2009.12.10 |
申请号 |
US20090405979 |
申请日期 |
2009.03.17 |
申请人 |
SHIJO TETSU;OBAYASHI SHUICHI |
发明人 |
SHIJO TETSU;OBAYASHI SHUICHI |
分类号 |
H01Q1/50;H01P5/12;H01P5/18;H01Q13/10 |
主分类号 |
H01Q1/50 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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