发明名称 ANTENNA DEVICE
摘要 An aspect of the invention provides an antenna apparatus that can suppress sensitivity degradation as much as possible to receive AM broadcasts and FM broadcasts even if an antenna height is decreased to 70 mm or less. An antenna board 30 is vertically mounted on a planar antenna base 20, and a top portion 31 is disposed so as to stride over the antenna board 30. An antenna element includes the top portion 31 and an antenna pattern formed on the antenna board 30. A distance between the antenna base 20 and a lower edge of the top portion 31 is not lower about 10 mm, and the lower edge of the top portion 31 is bent downward. A size of the top portion 31 is configured such that an antenna capacitance of the antenna element becomes about 3 pF or more. A received signal from the antenna element is guided to an amplifier board 34 through a connecting wire 33 and amplified. An antenna case 10 is fitted in the antenna base 20, thereby forming an antenna apparatus 1.
申请公布号 EP2312692(A1) 申请公布日期 2011.04.20
申请号 EP20090794119 申请日期 2009.03.19
申请人 NIPPON ANTENA KABUSHIKI KAISHA 发明人 WAKUI, MASASHI;KAMIYA, AKIO;ARAYAMA, NOBUO
分类号 H01Q1/32;H01Q5/00;H01Q9/36;H01Q21/30 主分类号 H01Q1/32
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