发明名称 |
Efficient broadband antenna system using photonic bandgap crystals |
摘要 |
A broadband antenna system utilizes multiple photonic bandgap crystals to achieve nearly 100 percent power efficiency over a larger range of frequencies than prior antenna systems. Multiple custom tailored photonic bandgap crystals form a substrate for the antenna system. Each of the crystals is designed to cover a specific range of frequencies. The multiple crystals are attached together to form a photonic bandgap substrate whose bandwidth varies as a function of location on the substrate. A broadband antenna that can cover a wide frequency range, and whose active region shifts to different portions of the antenna as a function of frequency, is formed on the substrate such that the active region of the antenna is always on a crystal that has a corresponding operating bandwidth. The photonic bandgap crystals provide a nearly 100 percent efficient reflector for radiation emitted into the substrate that would otherwise be trapped or dissipated therein.
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申请公布号 |
US5541613(A) |
申请公布日期 |
1996.07.30 |
申请号 |
US19940333913 |
申请日期 |
1994.11.03 |
申请人 |
HUGHES AIRCRAFT COMPANY, HUGHES ELECTRONICS |
发明人 |
LAM, JUAN F.;WOLFSON, RONALD I.;GLASER, JEROME |
分类号 |
H01Q11/10;H01Q15/00;(IPC1-7):H01Q11/00 |
主分类号 |
H01Q11/10 |
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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