摘要:
A radio frequency identification (RFID) tag including a substrate, an RFID chip, a chip contact part, a folding circuit and a radiation part is provided. The chip contact part is formed on the substrate and electrically coupled to the RFID chip. The folding circuit is formed on the substrate and electrically coupled to the chip contact part. The folding circuit has a winding part, which forms a hollow region, for compensating the antenna electric length. The radiation part is formed on the substrate and electrically coupled to the folding circuit, wherein one terminal of the winding part of the folding circuit is open, and the other terminal is electrically coupled to the radiation part. At least one of the folding circuit and the radiation part is asymmetric to the chip contact part.
摘要:
A radio frequency (RF) identification tag including a substrate, a planar antenna, an RF chip, a plurality of signal conductors and a plurality of ground conductors is provided. The RF chip receives an RF signal from the planar antenna to generate an identification code. The signal conductors are coupled to the planar antenna. The ground conductors, interlaced on two opposite sides of the signal conductors, and the signal conductors are adjacent to each other and disposed on the substrate to form a coplanar waveguide structure which includes an impedance match portion and a transmission portion. The impedance match portion has an input end coupled to the signal conductors and a ground plane coupled to the ground conductors. The RF chip is disposed between the input end and the ground plane. The transmission portion is connected between the impedance match portion and the planar antenna.
摘要:
A self-organized nanometer interface structure is disclosed. During the reactive sputtering process, the chemical dynamics difference among reactants induces self-organization to form a special nanometer interface structure. The nanometer interface structure naturally form an interface potential difference so that it has a rectifying effect in a particular range of potential variation range. Therefore, it functions like a diode. Such a self-organized nanometer interface structure can be used in the manufacturing of diodes, transistors, light-emitting devices, and sonic devices. The invention has the advantages of a wide variety of material selections, highly compatible processes, easy operations, and low-cost fabrications.
摘要:
An anti-metal radio frequency identification (RFID) tag and a manufacturing method thereof are described. The anti-metal RFID tag includes a substrate having a first surface and a second surface on an opposite side thereof; a planar integral antenna formed on the first surface of the substrate; a RFID transceiver chip (i.e., RFID chip) disposed on the surface of the substrate and coupled to a signal feed point of the planar integral antenna. The flexible planar integral antenna and substrate are folded and then fixed by a fixing mechanism to form an anti-metal RFID tag with a feed-in structure, a RFID transceiver chip, and a radiator on one side, and a ground plane on the opposite side. A spacer is further sandwiched in the center of the folded structure, which is helpful for improving the antenna gain of the anti-metal RFID tag.
摘要:
A radio frequency (RF) identification tag including a substrate, a planar antenna, an RF chip, a plurality of signal conductors and a plurality of ground conductors is provided. The RF chip receives an RF signal from the planar antenna to generate an identification code. The signal conductors are coupled to the planar antenna. The ground conductors, interlaced on two opposite sides of the signal conductors, and the signal conductors are adjacent to each other and disposed on the substrate to form a coplanar waveguide structure which includes an impedance match portion and a transmission portion. The impedance match portion has an input end coupled to the signal conductors and a ground plane coupled to the ground conductors. The RF chip is disposed between the input end and the ground plane. The transmission portion is connected between the impedance match portion and the planar antenna.
摘要:
A radio frequency identification (RFID) tag including a substrate, an RFID chip, a chip contact part, a folding circuit and a radiation part is provided. The chip contact part is formed on the substrate and electrically coupled to the RFID chip. The folding circuit is formed on the substrate and electrically coupled to the chip contact part. The folding circuit has a winding part, which forms a hollow region, for compensating the antenna electric length. The radiation part is formed on the substrate and electrically coupled to the folding circuit, wherein one terminal of the winding part of the folding circuit is open, and the other terminal is electrically coupled to the radiation part. At least one of the folding circuit and the radiation part is asymmetric to the chip contact part.