Communications: radio wave antennas – Antennas – Slot type
Reexamination Certificate
2007-03-06
2007-03-06
Nguyen, Hoang V. (Department: 2821)
Communications: radio wave antennas
Antennas
Slot type
C343S7000MS, C343S768000
Reexamination Certificate
active
11033382
ABSTRACT:
In order to have an antenna apparatus small in size and capable of switching its directivity pattern without degrading its antenna efficiency, the present invention provides an antenna apparatus having a driven element formed at an approximately center position of a planar printed circuit board and parasitic elements not performing feeding formed before and behind the first antenna element, respectively, so that the driven element is caused to function as a radiator and either one of the parasitic elements is made to have a length as long as an electrical length of a radiator or slightly shorter than that to function as a director and the other one of the parasitic elements is left to have an electrical length longer than that of the radiator to function as a reflector.
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Notification of Reasons for Refusal, Application No. 2004-016186, Drafting date: Aug. 4, 2006.
Alemu Ephrem
Kananen Ronald P.
Nguyen Hoang V.
Rader & Fishman & Grauer, PLLC
Sony Corporation
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