Communications: radio wave antennas – Antennas – Microstrip
Reexamination Certificate
2009-02-11
2011-10-04
Nguyen, Hoang V (Department: 2821)
Communications: radio wave antennas
Antennas
Microstrip
C343S702000
Reexamination Certificate
active
08031123
ABSTRACT:
A feeding radiation electrode and a non-feeding radiation electrode are provided extending from a front side surface to top surface of a dielectric base. In the feeding radiation electrode, a slit that extends from a feeding end in an inward direction is formed, and, in the non-feeding radiation electrode, a slit that extends from a ground end in an inward direction is formed. In addition, on the non-feeding radiation electrode, a branch electrode is formed so as to extend toward the side of the feeding radiation electrode. With this configuration, gain is obtained in two frequency bands by using a multi-resonance of fundamental wave resonances and harmonic resonances generated by the feeding radiation electrode and the non-feeding radiation electrode, and a good return loss characteristic caused by coupling of harmonic resonances is provided. In other embodiments, the feeding and non-feeding radiation electrodes may be formed on a flat substrate, or directly on a circuit board.
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Written Opinion with English Language Translation.
International Search Report with English Language Translation.
Official Communication issued in corresponding European Patent Application No. 08711346.0, mailed on Apr. 7, 2010.
Official Communication issued in corresponding European Patent Application No. 08 711 346.0, mailed on Apr. 15, 2011.
Keating & Bennett LLP
Murata Manufacturing Co. Ltd.
Nguyen Hoang V
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