초록 ▼

A multi-directional RFID read/write antenna unit is described which provides multi-directional RF communication to a source, such as a RF tag. The antenna comprises a plurality of coils adapted to transmit multi-directional RF signals to a RF tag and receive RF response signals from the RF tag. The

A multi-directional RFID read/write antenna unit is described which provides multi-directional RF communication to a source, such as a RF tag. The antenna comprises a plurality of coils adapted to transmit multi-directional RF signals to a RF tag and receive RF response signals from the RF tag. The RF antenna includes a switch for selecting at least one of the RF antenna coils for transmission of the RF signals and receipt of the RF response signals whereby the RF signals can be directed toward and received from a plurality of different directions from a fixed position.

대표청구항 ▼

[ What is claimed is:] [1.] A multi-directional RF antenna for a RFID unit, comprising:a substrate having multiple sides defining a plurality of planes, each of said planes having an axis, said substrate including an antenna coil disposed on each of said substrate sides, said antenna coils being ori

[ What is claimed is:] [1.] A multi-directional RF antenna for a RFID unit, comprising:a substrate having multiple sides defining a plurality of planes, each of said planes having an axis, said substrate including an antenna coil disposed on each of said substrate sides, said antenna coils being oriented on different axes, each of said coils being adapted to transmit and receive RF signals substantially uni-directional and substantially coincident a respective one of said axes; andantenna switching means in communication with said antenna coils for selecting at least one of said antenna coils for transmission and receipt of said RF signals whereby said RF signals can be selectively directed toward and received from a plurality of different directions from a fixed position.