Electronic equipment and antenna mounting printed-circuit board

Details Electronic equipment and antenna mounting printed-circuit board Electronic equipment and antenna mounting printed-circuit board

2005-09-06

2005-09-06

Dinh, Trinh Vo (Department: 2821)

Communications: radio wave antennas

Antennas

Microstrip

C343S702000, C343S829000, C343S846000, C343S853000

Reexamination Certificate

active

06940458

ABSTRACT:
A PDA includes a printed-circuit board on which at least one printed antenna pair having two chip-like printed antennas, which receive linearly polarized signals and are disposed along axes orthogonal to each other, is mounted. In each of the printed antennas, an open end is formed of at least two antenna conductors separated from each other. Besides, in the printed-circuit board, a ground required by one or plural other modules is disposed so as to surround a surrounding area of at least three sides of four sides forming a rectangular section in each of the printed antennas, and each of the printed antennas is disposed and mounted so that a remaining one side faces an edge portion of the printed-circuit board. While the PDA can receive circularly polarized signals very effectively, the degree of freedom in layout is greatly expanded and miniaturization can be realized.

REFERENCES:
patent: 6549169 (2003-04-01), Matsuyoshi et al.
patent: 2001/0053672 (2001-12-01), Masaki
patent: 2004/0036653 (2004-02-01), Ishihara et al.
patent: 2004/0227669 (2004-11-01), Okado
patent: 05-347509 (1993-12-01), None
patent: 2002-118411 (2002-04-01), None

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