| 摘要 |
The system for detecting a position of an object in a plane (2), comprises in an operational state - at least one antenna loop (10D+10E) aligned with the plane (2), - an RF signal generator (41) for activating the antenna loop. The antenna loop has at least one antenna element (10D, 10E) with a cross-diameter (H) in a direction transverse to the plane that is larger than a cross-diameter (D) in a direction aligned with the plane. Alternatively or in addition the system for detecting a position of an object in a plane comprises in an operational state - at least a first antenna loop (210D+210E), - at least a second antenna loop (210C+210F), that extends at least partially outside the first antenna loop, - an RF-signal generator (241) for providing the first antenna loop with an RF signal, - an facility (243, 244) for providing the second antenna loop with an RF signal that is in phase with that of the RF-signal in the first antenna loop. |
