发明名称 |
Antenna apparatus with tuned loop |
摘要 |
An antenna apparatus including a small loop antenna element fabricated by printed circuit method, a variable capacitor for matching the antenna element to broadcasting frequency and an amplifier for the received signal. The variable capacitor and the amplifier are mounted on a printed circuit board containing the loop antenna element and the variable capacitor is rotatably mounted on the board centrally of the loop antenna element. A second loop antenna element may be mounted either concentrically on the said side of the printed circuit board or on the other side of the board. A second variable capacitor cooperates with the second antenna element and a single manual element controls both capacitors.
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申请公布号 |
US4647937(A) |
申请公布日期 |
1987.03.03 |
申请号 |
US19860846195 |
申请日期 |
1986.03.31 |
申请人 |
TOKYO SHIBAURA DENKI KABUSHIKI KAISHA |
发明人 |
HIDAKA, KAZUTAKA;SUEHIRO, KENJI |
分类号 |
H01Q1/38;H01Q7/00;(IPC1-7):H01Q7/00 |
主分类号 |
H01Q1/38 |
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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