发明名称 |
Omnidirectional antenna utilizing an asymmetrical bicone as a passive feed for a radiating element |
摘要 |
An antenna assembly comprising a radiating element which passively receives a signal fed by a vertically-stacked pair of asymmetrically-shaped, conductive cone elements mounted below the radiating element. The cone elements are centrally fed by a coaxial cable input at a common junction formed the apex of each cone element. This antenna assembly provides a low-profile antenna to transmit and receive radio frequency (RF) energy with high gain and desirable antenna patterns for data transmission in an in-building, wireless local area network The antenna assembly can be mounted in a standard ceiling or wall-mounted enclosure, with the low-profile antenna extending beneath the surface of a conductive enclosure cover that serves as the ground plane for the antenna element. This configuration achieves high antenna gain with a downtilt-beam, omnidirectional radiation pattern, which is highly desirable in an in-building wireless local area network (WLAN) application. <IMAGE>
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申请公布号 |
EP1443598(A1) |
申请公布日期 |
2004.08.04 |
申请号 |
EP20040008238 |
申请日期 |
2000.12.11 |
申请人 |
EMS TECHNOLOGIES, INC. |
发明人 |
STRICKLAND, PETER, C.;ZIMMERMAN, KURT, ALAN;WANN, JOHN ELLIOT;TAYLOR, THOMAS, STEVEN |
分类号 |
H01Q1/00;H01Q9/28;H01Q9/32;(IPC1-7):H01Q9/28 |
主分类号 |
H01Q1/00 |
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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