US 6,268,796 B1 · Radio frequency identification transponder having integrated antenna

Abstract

A radio frequency identification device (RFID) has an antenna formed on a chip. The chip has backside and a front side coated with conductive traces, which are connected through conductive traces on the sides of two elongate through-hole slots formed on the chip to form an operative coil having the chip as a core. In one embodiment, the antenna chip may be stacked above an integrated circuit. In another embodiment, the integrated circuit may be formed on the antenna chip. The antenna chip may include a high magnetic permeability layer to increase the inductance of the coil, a capacitor to tune the coil to a desired frequency, and a coupling capacitor to power the integrated circuit. As well as the specific application disclosed, an inductance useful in numerous applications can be formed according to the above structure.

Claims29

Dependent claims

A Radio Frequency Identification (RFID) device comprising:

an antenna chip having a chip core, a chip front side, a chip backside, and conductive traces on the chip front side and chip backside, at least some of the traces on the chip front side being in electrical communication with at least some of the traces on the chip backside so that the conductive traces form an operative coil around the chip core;
an integrated circuit chip having an integrated circuit formed thereon, the integrated circuit having at least one of electronic memory and logic, integrated circuit being in electrical communication with the coil;
the integrated circuit chip being stacked in relation to the antenna chip and being mechanically attached thereto.

Dependencies are inferred from the claim text.

Radio frequency identification transponder having integrated antenna

Life of this patent

Radio frequency identification transponder having integrated antenna

Life of this patent

Abstract

Claims29