Patent ID: 7342548

Claim:
A radio guidance antenna comprising: first and second antennas, where the first and second antennas can be supplied with independent electric power from different feeding points, wherein the first antenna has at least two regions for generating lines of magnetic flux in reciprocal directions, and the second antenna has first (S 1 ) and second (S 2 ) mutual inductances for generating induced electromotive forces in opposite directions due to electromagnetic induction from the first antenna, wherein the feeding point of the first antenna is located at the center point of the first antenna, the second antenna being arranged so that the sum of mutual inductances between it and the first antenna is minimized, wherein the feeding point of the second antenna is located at the edge of the second antenna, wherein said first and second antennas are located on first and second gate structures, such that said first and second antennas are configured to face each other in a gate-like manner.