Loop antenna having better directivity in low range of angle...

Details Loop antenna having better directivity in low range of angle... Loop antenna having better directivity in low range of angle...

2006-05-30

2006-05-30

Dinh, Trinh (Department: 2821)

Communications: radio wave antennas

Antennas

Loop type

C343S741000, C343S742000

Reexamination Certificate

active

07053857

ABSTRACT:
In a loop antenna including a circuit board, a cylindrical body standing on a surface of the circuit board, and a loop antenna element formed on the cylindrical body along the peripheral surface, a tubular insulator member is placed with some space around the cylindrical body. A conductor ring is formed on the tubular insulator member along the peripheral surface, and is placed on an intermediate position between the surface of the circuit board and the plane formed by the loop antenna element. A conductor wall is placed with some space around the cylindrical body on an intermediate distance between the surface of the circuit board and the plane formed by the loop antenna element into height.

REFERENCES:
patent: 6462481 (2002-10-01), Holland et al.
patent: 6738650 (2004-05-01), Zhou et al.
patent: 2001/0052882 (2001-12-01), Noro et al.
patent: 2002/0158803 (2002-10-01), Hill et al.
patent: 2003/0063038 (2003-04-01), Nakano et al.

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