275results about How to "Reduce insertion" patented technology

The present invention provide an optical circuit device having: an optical circuit; a polarization beam splitter/combiner for splitting an incoming light beam into two polarization beams and combining the two polarization beams into an outgoing light beam; a first optical waveguide and a second optical waveguide for connecting the optical circuit and the polarization beam splitter/combiner and receiving the two polarization beams independently; and a polarization rotator, arranged on the first optical waveguide, for rotating a polarization plane of one of the two polarization beams split by the polarization beam splitter/combiner so as to match a polarization plane of the other of the two polarization beams, the optical circuit, the polarization beam splitter/combiner, the first optical waveguide, the second optical waveguide and the polarization rotator being integrated on a planar substrate.

A wiring board (10) having reduced electromagnetic coupling between electronic devices includes a base board (12) that is adaptable to receive at least one electronic component (14) mounted on the base board (12). At least one hole or void (16) is formed in the base board (12). The hole (16) is separated from the selected electronic component (14) to be isolated against undesired electromagnetic radiation by a portion (18) of the base board (12).

LiFePO₄ flakes for a Li-ion battery and a method for manufacturing the same are disclosed. The LiFePO₄ flakes of the present invention have a thickness of 5 nm-200 nm, and the angle between the flat surface normal of the flake and the Li-ion diffusion channel is 0°-80°. In addition, according to the present invention, the LiFePO₄ flakes with short Li ion diffusion path can be prepared through a simple process. Hence, not only the charge-discharge efficiency of the Li-ion battery can be improved by use of the LiFePO₄ flakes of the present invention, but also the cost of the Li-ion battery can be further reduced.

A phase plugs or acoustic lens improves the directional audio performance of a loudspeaker. Application of the improved directional audio performance to a sound system in a listening area may improve the performance of the audio system. Configuration of the acoustic lens or phase plug may include both symmetrical and asymmetrical features to provide an improved frequency response and directivity. The improved loudspeaker may provide improved an improved listing location, for example, in a vehicle.

A thin film bulk acoustic wave (BAW) resonator structure and filter which can be fabricated by inexpensive manufacturing techniques and in smaller size than conventional such products are to be provided. The BAW resonator structure and filter have a substrate, a first BAW resonator placed over the substrate, an acoustic reflection layer placed over the first BAW resonator and a second BAW resonator placed over the acoustic reflection layer, and the acoustic reflection layer is electroconductive. Herein, the acoustic reflection layer constitutes a first electrode, and this first electrode electrically connects and acoustically separates the first BAW resonator and the second BAW resonator.

A piezoelectric thin-film filter reduces insertion loss and deterioration of steepness of a shoulder characteristic and reduces the ripple in the passband. In a first vibration portion, a piezoelectric thin film is disposed between a pair of electrodes along one main surface of a substrate. In a second vibration portion, the piezoelectric thin film is disposed between a pair of electrodes along the one main surface of the substrate. The vibration portions are both acoustically isolated from the substrate. In the first resonator, an additional film is disposed outside the electrode constituting half or more the overall length of the perimeter of the first vibration portion that is in contact with the electrode when seen from a thickness direction. In the second resonator, the external shape of the vibration portion when seen from a thickness direction is a polygon, and each side of the polygon is not parallel with any of the other sides thereof.

A filtering method and optical filter structure are presented. The structure comprises an input waveguide, an output waveguide, and a filter stage formed by at least one closed loop resonator optically coupled to the input and output waveguides. A level of the coupling from each of the waveguides to the resonator is at least 5 times greater than a loss-per-revolution of the resonator. The filter structure thus provides for reducing a bandwidth and insertion loss while filtering at least one optical channel from a multi-channel light signal.

Methods, devices and systems facilitate retention of a variety of therapeutic devices. Devices generally include an anchoring element, which has been designed to promote fibrotic ingrowth, and an anchored device, which has been designed to firmly engage the complementary region of the anchoring element. The anchoring element may be placed in a minimally invasive procedure temporally separated from the deployment of the anchored device. Once enough time has passed to ensure appropriate fixation of the anchoring element by tissue and cellular ingrowth at the site of placement, the anchored device may then be deployed during which it firmly engages the complementary region of the anchoring element. In this manner, a firm attachment to the implantation site may be made with a minimum of required hardware. Some embodiments are delivered through a delivery tube or catheter and while some embodiments may require laparoscopy or open surgery for one or more of the placement procedures. Some embodiments anchor devices within the cardiovascular tree while others may anchor devices within the gastrointestinal, peritoneal, pleural, pulmonary, urogynecologic, nasopharyngeal or dermatologic regions of the body. An alternative embodiment provides for the placement of the anchoring element and anchored device simultaneously, but allows for their removal separately. This embodiment allows the device, which may be placed only temporarily and be designed to be removed, to experience significant fibrotic ingrowth, but then to be easily detached from the ingrowth-anchored region to allow for simple and quick device removal.

The invention relates to methods of stabilizing bone implants, comprising inserting a self tapping implant having at least two helical grooves running in opposite directions around the implant.

A nonreciprocal circuit element includes first and second center electrodes. On a ferrite to which a direct-current magnetic field is applied from a permanent magnet, the first and second center electrodes are insulated and intersect. First and second ends of the first center electrode are connected to an input port and an output port, respectively. First and second ends of the second center electrode are connected to the output port and a ground port, respectively. A first matching capacitor and a resistor are connected between the input port and the output port. A second matching capacitor is connected between the output port and the ground port. A parallel resonant circuit is connected in parallel to the resistor. A coupling element is connected between the parallel resonant circuit and another parallel resonant circuit including the first center electrode and the first matching capacitor so as to the parallel resonant circuits.

The invention discloses a synchronization method for orthogonal frequency division multiplexing system, including: the launcher firstly constructs the originated / synchronous sequence that is sent out with OFDM data symbols together. Based on the correlation of CP effective length in OFDM symbols form the receiving end, the correlation result conducts a time domain processing to the correlation sequence energy to get the best synchronization points set after one synchronization. Based on the originated sequence and CP, the departure estimation and departure compensation of fractional part DF several times are processed. During a range of synchronization points set output at once, the long pre-symbol received after the compensation is made time-domain correlation with the symbol to find the second time synchronization point. Then after time-domain of the short pre-symbol and the received pre-sequence is made frequency departure compensation, time-domain-related operations is conduct to get the DF departure estimation of integer times, and departure compensation is conduct.

The invention relates to methods of stabilizing bone implants, comprising inserting a self tapping implant having at least two helical grooves running in opposite directions around the implant wherein the implant generates a minimum of bone debris during insertion and implant is integrated within 3-6 weeks.