发明名称 |
Hybrid antenna arrangement for use with electronic indentification systems. |
摘要 |
A dipole antenna 34 comprises a loop 36 as a first pole and an appendage 42 comprising a strip 44 terminating in a pad 46 as a second pole. The circumference of the loop is in the order of one half-wavelength of an operating frequency and an effective length of the appendage is at least 0.15 times the wavelength. The dipole antenna 34 is shorter than conventional half-wavelength dipole antennas, has a better frequency response and the antenna impedance ZA is dependent on the position of a feedpoint 38 in the loop 36. The antenna may be used with transponders for electronic radio frequency identification systems. <IMAGE> |
申请公布号 |
ZA200000668(B) |
申请公布日期 |
2000.10.22 |
申请号 |
ZA20000000668 |
申请日期 |
2000.02.11 |
申请人 |
SUPERSENSOR (PROPRIETARY) LIMITED |
发明人 |
DAVID EDWIN PROCTOR;CHRISTOPHER GORDON GERVASE TURNER;ANDRIES PETRUS CRONJE FOURIE |
分类号 |
G06K19/07;G01S7/03;G01S13/75;G01S13/76;G01S13/79;G06K7/10;G06K19/077;H01Q1/22;H01Q1/36;H01Q7/00;H01Q9/16;H01Q9/28 |
主分类号 |
G06K19/07 |
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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