Communications: radio wave antennas – Antennas – Microstrip
Reexamination Certificate
2005-09-12
2009-10-13
Nguyen, Hoang V (Department: 2821)
Communications: radio wave antennas
Antennas
Microstrip
C343S702000, C343S833000, C343S834000
Reexamination Certificate
active
07602340
ABSTRACT:
The present invention aims at providing an antenna apparatus which enables switching directivity suitable for a plurality of usage patterns of a wireless terminal, such as that achieved during voice conversation and that achieved during data communication, and is easily slimmed down, as well as providing a wireless terminal using the antenna apparatus.An antenna apparatus1of the present invention includes a linear radiating element3placed on a first plane; a first parasitic element6placed on the first plane in parallel with the radiating element3; a first ground conductor5placed on the first plane; a first switch7which connects both ends of the first parasitic element6to the first ground conductor; and a second ground conductor8placed on a second plane opposing the first plane, wherein a part of the first ground conductor5is placed in parallel with the radiating element3and on a side opposite the first parasitic element6with the radiating element3sandwiched therebetween; and the second ground conductor8is placed opposite the radiating element3, and ends of the second ground conductor8oppose an area sandwiched between the radiating element3and the first parasitic element6.
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European Search Report.
Nguyen Hoang V
Panasonic Corporation
Pearne & Gordon LLP
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