发明名称 |
APPARATUS AND METHOD FOR ISOLATING IN-CHANNEL FM ANTENNAS SHARING COMMON APERTURE SPACE |
摘要 |
Each of a pair of antennas for broadcasting has multiple elements arranged vertically on the same tower. The antennas transmit circularly polarized signals of opposite polarization. The opposite circular polarization of the radiated signals increases their mutual isolation and permits broadcast of conventional FM-band signals and digital FM at the same frequency. The polarization technique allows the elements of the two antennas to share an aperture without degradation of function. |
申请公布号 |
WO2004095627(A2) |
申请公布日期 |
2004.11.04 |
申请号 |
WO2004US07055 |
申请日期 |
2004.03.09 |
申请人 |
SPX CORP;SCHADLER JOHN L |
发明人 |
SCHADLER JOHN L |
分类号 |
H01Q;H01Q1/12;H01Q1/24;H01Q1/36;H01Q1/52;H01Q21/24;H01Q25/00 |
主分类号 |
H01Q |
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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