Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Reexamination Certificate
2007-07-10
2007-07-10
Ho, Tan (Department: 2821)
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
C343S866000
Reexamination Certificate
active
11148133
ABSTRACT:
An antenna structure for transmitting and/or receiving radio waves has a symmetrically arranged radiator element with a first connecting terminal and a second connecting terminal, said radiator element being tuned to a useful frequency. Moreover, it has at least one conductor structure connected in parallel with the radiator element. The conductor structure comprises an open-circuited first line element, which is coupled to the first connecting terminal, and an open-circuited second line element, which is coupled to the second connecting terminal. In this case, a length of the first line element and of the second line element essentially corresponds to the integral multiple of a quarter wavelength corresponding to a blocking frequency. The first line element and the second line element run parallel to one another.
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Karl Rothammel, Antennenbuch, Y2 1 BK, pp. 108-123.
Baker & Botts L.L.P.
Ho Tan
Infineon - Technologies AG
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