Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Reexamination Certificate
2007-02-27
2007-02-27
Le, Hoanganh (Department: 2821)
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
C343S702000, C343S7000MS
Reexamination Certificate
active
11173574
ABSTRACT:
The present invention includes a balanced compact antenna, conforming to the envelope restrictions appropriate to a PC-card form factor, with maximum radiation intensity along a long axis of the card. The inventive antenna configuration employs an inductive shorting bar to match an “M”-shaped bent dipole antenna to a differential feed. The combination of horizontal cross-members and large vertical downward legs ensures radiation predominantly in a broadside direction while keeping the dimensions of the antenna sufficiently compact to fit within the PC-card envelope.
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Soras, C., et al., “Analysis and Design of an Inverted-F Antenna Printed on a PCMCIA Card for the 2.4 GHz ISM Band”, IEEE Antenna's and Propagation Magazine, vol. 44, No. 1, (Feb. 2002) pp. 37-44.
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Le Hoang-anh
Morgan & Lewis & Bockius, LLP
WJ Communications, Inc.
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