Radio guidance antenna, data communication method, and...

Details Radio guidance antenna, data communication method, and... Radio guidance antenna, data communication method, and...

2008-03-11

2008-03-11

Wimer, Michael C. (Department: 2821)

Communications: radio wave antennas

Antennas

High frequency type loops

C343S867000, C340S572700

Reexamination Certificate

active

10254835

ABSTRACT:
A radio guidance antenna in which the sum of mutual inductances of antennas is minimized. The radio guidance antenna includes a first antenna which is divided into upper and lower half regions by antenna conductors, and a second antenna which is composed of an antenna conductor and formed on the same plane as or a plane parallel to a plane of the first antenna. The second antenna is not connected to the first antenna at any points where it intersects the first antenna, but rather is inductively coupled to the upper and lower halves of the first antenna through mutual inductance regions. The first antenna is supplied with electric power from a first feeding point, and the second antenna is supplied with electric power from a second feeding point. The invention also includes a data communication method and a non-contact data communication apparatus which make use of the radio guidance antenna.

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