Abstract:
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.
Abstract:
Methods for forming conductive layers. A layer of metal composite is applied on a substrate, comprising a plurality of metal flakes, a plurality of nanometer metal spheres, and a plurality of mixed metal precursors. The plurality of mixed metal precursors comprises a mixture of inorganic salts and organic acidic salts. The layer of metal composite is cured to induce an exothermic reaction, thereby forming a conductive layer on the substrate at a relatively low temperature (
Abstract:
A miniaturized common mode EMI filter with a greatly simplified design so that it can be manufactured very economically. The common mode filter includes: (a) a magnetic main body; (b) a pair of substantially identical electrically conductive planar coils embedded in the magnetic main body; and (c) an insulative planar coil sandwiched between the pair of electrically conductive planar coils, wherein the insulative planar coil has a pattern that is substantially identical to and inclusive of the pattern of the electrically conductive planar coils so as to insulate the pair of electrically conductive planar coil from each other. The common mode filter retains low normal mode impedance and high common mode impedance, with a substantially reduced physical size, so that it can cost-effectively maintain a high fidelity of the normal mode waveform of signals for electronic devices that utilize differential transmission technology and keep the common mode EMI noise to a minimum.
Abstract:
A protection component includes: a package substrate; a first fuse unit disposed in the package substrate, having a first fusing region; a second fuse unit disposed in the package substrate, having a second fusing region which is close to the first fusing region; and a first buried cave disposed in the package substrate corresponding to the first and second fusing regions. When one of the first and second fusing regions is blown out, the first buried cave assists energy of fuse melting to break the other of the first and second fusing regions.
Abstract:
A wireless communication apparatus in one embodiment includes a bag body and a radio frequency device. The bag body has at least a first slot, which extends to an edge of the bag body. The radio frequency device including a wireless integrated circuit chip is for radio-frequency signal transmission or receiving, and is disposed across a portion of the first slot and coupled to two connection ends of the bag body so that the bag body between the two connection ends serves as an inductance circuit. The inductance circuit of the two connection ends of the bag body is based on metallic material. An impedance of the inductance circuit is for conjugate matching with that of the radio frequency device and is determined according to a plurality of geometric parameters including: a distance from the edge to the wireless integrated circuit chip, and size of the first slot.
Abstract:
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.
Abstract:
A wireless communication apparatus in one embodiment includes a bag body and a radio frequency device. The bag body has at least a first slot, which extends to an edge of the bag body. The radio frequency device including a wireless integrated circuit chip is for radio-frequency signal transmission or receiving, and is disposed across a portion of the first slot and coupled to two connection ends of the bag body so that the bag body between the two connection ends serves as an inductance circuit. The inductance circuit of the two connection ends of the bag body is based on metallic material. An impedance of the inductance circuit is for conjugate matching with that of the radio frequency device and is determined according to a plurality of geometric parameters including: a distance from the edge to the wireless integrated circuit chip, and size of the first slot.
Abstract:
The invention provides a system and method for testing the power intensity of RFID tags. The method is applicable to the system for testing power intensity, which comprises a RFID reading device, a signal transmitting device electrically coupled to the RFID reading device, a signal separating device electrically coupled to the signal transmitting device and a control analysis device electrically coupled to the signal separating device. The system is applicable to a RFID tag or a test object attached with a RFID tag in a non-shielded or shielded room.
Abstract:
Methods for forming conductive layers. A layer of metal composite is applied on a substrate, comprising a plurality of metal flakes, a plurality of nanometer metal spheres, and a plurality of mixed metal precursors. The plurality of mixed metal precursors comprises a mixture of inorganic salts and organic acidic salts. The layer of metal composite is cured to induce an exothermic reaction, thereby forming a conductive layer on the substrate at a relatively low temperature (