H - Electricity – 01 – Q
Patent
H - Electricity
01
Q
H01Q 9/04 (2006.01)
Patent
CA 2184972
An antenna apparatus, a method of manufacturing the same, and a method of designing the same, are provided. A first dielectric layer, first dielectric film, second dielectric layer and second dielectric film are laminated on a flat metal plate in the mentioned order. A radiation element fed through a feeding line is arranged below another radiation element that is not fed through the feeding line. The feeding line forms, along its overall length, a microstrip line having the dielectric layer sandwiched by the feeding line and the flat conductive plate, resulting in no model change from the microstrip line to a triplate line or vice versa, with reduced feeding loss. The thickness of the dielectric layer is so set as to be sufficiently small compared with the used wavelength, to thereby suppress the radiation from discontinuities lying on the microstrip line constituted of the feeding line and flat conductive plate. This eliminates the need for a metal shield plate to prevent unneces- sary radiation from the feeding line.
Isota Yoji
Konishi Yoshihiko
Matsunaga Makoto
Nakahara Shintaro
Ohtsuka Masataka
Gowling Lafleur Henderson Llp
Mitsubishi Denki Kabushiki Kaisha
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