Abstract: A method for increasing the bandwidth of an electroabsorption modulator (EAM) includes the following steps. First, a plurality of p-i-n active waveguides for the EAM are defined on a p-i-n optical waveguide forming an EAM having a shorter p-i-n active waveguide length. Then, the bandwidth of the EAM can be increased. Second, the high-impedance transmission lines are used in series to connect the EAM sections to reduce the microwave reflection and then increase the device bandwidth. Finally, the impedance-controlled transmission lines for the signal input and output can not only reduce the parasitic effects resulting from packaging, but also reduce the microwave reflection resulting from the impedance mismatch at the device input and load.

Abstract: A method for increasing the bandwidth of an electroabsorption modulator (EAM) includes the following steps. First, a plurality of p-i-n active waveguides for the EAM are defined on a p-i-n optical waveguide forming an EAM having a shorter p-i-n active waveguide length. Then, the bandwidth of the EAM can be increased. Second, the high-impedance transmission lines are used in series to connect the EAM sections to reduce the microwave reflection and then increase the device bandwidth. Finally, the impedance-controlled transmission lines for the signal input and output can not only reduce the parasitic effects resulting from packaging, but also reduce the microwave reflection resulting from the impedance mismatch at the device input and load.

Abstract: A flexible printed circuit and printed circuit board soldered structure is provided. The structure includes signal transmission lines which dispense with any through hole, thereby enhancing integrity of high-frequency signals. The special design of the signal line structure of the flexible printed circuit and the printed circuit board together provides a satisfactory high-frequency signal transmission interface and enables a soldering technique which is highly practicable and compatible with the flexible printed circuit and printed circuit board soldered structure.

Abstract: The present invention relates to a two-end driving, high-frequency sub-substrate structure, comprising a sub-substrate body, wherein: the sub-substrate body has an upper side provided with a first signal pad area and a second signal pad area, the first signal pad area and the second signal pad area are symmetric with respect to each other, each of the first signal pad area and the second signal pad area extends from one of two lateral portions of the sub-substrate body in an extending direction toward a center of the sub-substrate body and terminates in an end, the end of the first signal pad area is adjacent to but spaced from the end of the second signal pad area, the first signal pad area is configured for supporting a semiconductor chip provided thereon, the second signal pad area is provided with a jumper wire connected to an electrode of the semiconductor chip, there are two grounding pad areas provided respectively on two lateral sides of the first signal pad area and the second signal pad area and con

Abstract: A waterproof motor includes: a recess (15) and a shaft tube (11) disposed upright on one side (105) of a base (1); a waterproof cover (2) covering the one side (105) of the base (1) and having a through hole 21 correspondingly enclosing the shaft tube (11) and a protruding portion (22) correspondingly engaging the recess (15), a first space (18) formed between the waterproof cover (2) and the one side (105) of the base (1); a first circuit board (3) disposed inside the first space (18) and having a plurality of sensors (31, 32); a housing (6) having an opening (69) and connected to the other side (106) of the base (1); an insulation plate (7) covering the opening of the housing (6), a second space (68) opposite to the first space (18) formed between the insulation plate (7) and the housing (6).

Abstract: A waterproof motor includes: a recess (15) and a shaft tube (11) disposed upright on one side (105) of a base (1); a waterproof cover (2) covering the one side (105) of the base (1) and having a through hole 21 correspondingly enclosing the shaft tube (11) and a protruding portion (22) correspondingly engaging the recess (15), a first space (18) formed between the waterproof cover (2) and the one side (105) of the base (1); a first circuit board (3) disposed inside the first space (18) and having a plurality of sensors (31, 32); a housing (6) having an opening (69) and connected to the other side (106) of the base (1); an insulation plate (7) covering the opening of the housing (6), a second space (68) opposite to the first space (18) formed between the insulation plate (7) and the housing (6).

Abstract: A fan includes an impeller and an inner rotor motor. The inner rotor motor connects to the impeller and drives it to rotate. The inner rotor motor includes a bushing, a shaft, a magnetic conducting shell, a magnetic element and a stator. The shaft passes through the bushing and is coupled to the impeller. The magnetic conducting shell is coupled to the shaft and telescoped to the bushing. The magnetic element is disposed around outside of the magnetic conducting shell. The stator is disposed around outside of the magnetic element.

Abstract: A fan includes a fan frame, a front impeller and a rear impeller. The fan frame has a frame body and a plurality of connecting elements. The front impeller has a first bushing disposed at the central portion of the frame body. Two ends of each connecting element are respectively connected with the frame body and the first bushing. The rear impeller has a second bushing partially telescoped into the first bushing.

Abstract: The invention provides a method for determining a risk for kidney stones to develop in a subject, including: obtaining a biosample of the subject; detecting the presence of the single-nucleotide polymorphism rs12313273 (C/T) at position 30881 of the ORAI1 gene (SEQ ID No.: 1) in the biosample; and determining a risk for kidney stones to develop in the subject, wherein if the presence of a C allele of the single-nucleotide polymorphism rs12313273 (C/T) is detected, it indicates that the subject has an increased risk for kidney stones to develop.

Abstract: A fan structure includes a frame having an inner surface, a permeable element covering the inner surface of the frame, a coil surrounded by the permeable element and a rotor assembly disposed rotatably in the frame. The rotor assembly includes a plurality of blades coupled to a shaft and a permanent magnet enclosing the blades and facing the coil. The rotor assembly rotates along the shaft to generate airflow by means of the electromagnetic effect between the permanent magnet and the coil.

Abstract: A fan includes an impeller and an inner rotor motor. The inner rotor motor connects to the impeller and drives it to rotate. The inner rotor motor includes a bushing, a shaft, a magnetic conducting shell, a magnetic element and a stator. The shaft passes through the bushing and is coupled to the impeller. The magnetic conducting shell is coupled to the shaft and telescoped to the bushing. The magnetic element is disposed around outside of the magnetic conducting shell. The stator is disposed around outside of the magnetic element.

Abstract: A fan includes a fan frame, a front impeller and a rear impeller. The fan frame has a frame body and a plurality of connecting elements. The front impeller has a first bushing disposed at the central portion of the frame body. Two ends of each connecting element are respectively connected with the frame body and the first bushing. The rear impeller has a second bushing partially telescoped into the first bushing.