Abstract: A transponder apparatus for a transponder unit has a UHF and HF transponder The UHF transponder has a transponder support, a UHF antenna and a UHF chip. The HF transponder has an HF antenna and an HF chip. The UHF antenna is at the transponder support and is made up of conducting UHF antenna structures in transponder support planes which are spatially separated from one another. The transponder apparatus includes an electrically-insulating attachment layer connecting the UHF transponder to the HF antenna. The transponder apparatus includes an electrically-insulating spacer element connected to the HF transponder and which spatially separates the UHF transponder and the HF transponder relative to a body. The UHF transponder is disposed on the HF antenna. A conducting HF antenna structure of the HF antenna extends beyond a covering surface of the UHF transponder and the HF antenna structure.

Abstract: The invention relates to a transponder apparatus (10) for a transponder unit which can be worn on a human or animal body, such as a collar, band or the like, comprising a UHF transponder and an HF transponder (12), wherein the UHF transponder is made up of a transponder support (11), a UHF antenna and a UHF chip, wherein the HF transponder is made up of an HF antenna (16) and an HF chip (15), wherein the UHF antenna is disposed at the transponder support and is made up of conducting UHF antenna structures in transponder support planes which are spatially separated from one another, wherein the transponder apparatus comprises an electrically-insulating attachment layer (13) which connects the UHF transponder to the HF antenna, wherein the transponder apparatus comprises an electrically-insulating spacer element (14) which is connected to the HF transponder and which spatially separates the UHF transponder and the HF transponder relative to a body (20), wherein the UHF transponder is disposed on the HF antenna,

Abstract: A RFID transponder having a microchip or integrated circuit, an impedance-matching structure and a resonant structure mounted on at least one substrate and connected to each other by an electric field.

Abstract: A RFID transponder having a microchip or integrated circuit, an impedance-matching structure and a resonant structure mounted on at least one substrate and connected to each other by an electric field.