ANTENNA FOR SHORT-RANGE APPLICATIONS AND USE OF AN ANTENNA OF THIS TYPE

摘要

The invention relates to an antenna for short-range applications, particularly RFID applications. The antenna (1) according to the invention comprises an elongated bipolar conductor structure (12) with an inner conductor (14) and an envelope conductor (16) coaxially surrounding the same, wherein a first end (18) of the conductor structure (12) is provided as a connection end for connecting a transmitter and/or receiver for an antenna signal to be transmitted using the antenna or an antenna signal to be received by the antenna, and wherein an inner-conductor extension (24), which is connected to the inner conductor (14), is provided at a second end (22) of the conductor structure (12) and a free end (26) of the inner-conductor extension (24) is capacitively coupled to the envelope conductor (16). A wireless and reliable transmission of energy and/or information over short distances in particular can be realised using the invention.

主权项

1. An antenna for short-range applications, comprising an elongated bipolar conductor structure with an inner conductor and an envelope conductor coaxially surrounding the same, wherein a first end of the conductor structure is provided as a connection end for connecting a transmitter and/or receiver for an antenna signal to be transmitted using the antenna or an antenna signal to be received by the antenna,
wherein an inner-conductor extension, which is connected to the inner conductor, is provided at a second end of the conductor structure and a free end of the inner-conductor extension is capacitively coupled to the envelope conductor, and wherein the inner-conductor extension has a 180° bend in a section thereof emanating from the second end of the conductor structure and progressing toward the free end of the inner-conductor extension, so that the free end and an end section of the inner-conductor extension lying directly before the free end and running rectilinearly and parallel to a longitudinal direction of the conductor structure lie close to the second end of the conductor structure thereby establishing said capacitive coupling in the region of the second end of the conductor structure.