发明名称 |
Dual band antenna using a single column of elliptical vivaldi notches |
摘要 |
<p>This invention relates to a tapered slot antenna with broadband characteristics whose beamwidth is stable over both the PCS (1850-1990 MHz) and the cellular bands (824-894 MHz). In a first preferred embodiment, a dual band antenna is disclosed which uses a single column elliptically shaped Vivaldi notches (12, 13) as the radiating elements. In a second preferred embodiment, a dual band antenna comprising elliptically shaped Vivaldi notches (12, 13) and sub-reflector positioned between a main reflector and the dipoles is disclosed. This resultant antenna produces a stable, ninety-degree beamwidth with a bandwidth broad enough to cover the PCS and the cellular bands. <IMAGE> <IMAGE></p> |
申请公布号 |
EP1217690(A2) |
申请公布日期 |
2002.06.26 |
申请号 |
EP20010403194 |
申请日期 |
2001.12.11 |
申请人 |
RADIO FREQUENCY SYSTEMS INC. |
发明人 |
POWELL, CHARLES;MARINO, RONALD |
分类号 |
H01Q1/24;H01Q5/00;H01Q13/08;H01Q21/08;(IPC1-7):H01Q13/08 |
主分类号 |
H01Q1/24 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|