摘要:
The presence of micro-reflections is determined in a network by determining micro-reflections from amplifier and diplex filter impedance mismatches and micro-reflections from drop cable impedance mismatches. The micro-reflections from impedance mismatches are determined by instructing network element to transmit a test signal at a first symbol rate and a first resolution for amplifier and diplex filter impedance mismatches and a second frequency with a second symbol rate and second resolution for micro-reflections from drop cable impedance mismatches. The tests are performed with several frequencies and the channels with the least micro-reflections are identified.
摘要:
Network elements are identified as being connected to optical nodes by instructing two network elements in a spectrum group of the CMTS to transmit at frequencies f1 and f2, respectively. Frequencies f1 and f2 are selected such that they produce intermodulation distortions (intermods) in the laser transmitter at f3 when combined. If intermods are produced which exceed a predetermined threshold, then the two network elements are determined to be on the same node. If the total power of the signal by the laser transmitter exceeds an impact threshold, then the test is stopped and new network elements are selected for testing.
摘要:
The present invention is a device which includes an antenna and circuitry. The antenna may receive a circularly-polarized signal as first and second linearly-polarized signals. The circuitry is connected to the antenna and is configured for combining the first and second linearly-polarized signals to produce at least two reception patterns. The reception patterns are created by summing the first and second linearly-polarized signals via phase shifting. The reception patterns are optimized for at least two substantially different directional orientations. Further, the antenna may simultaneously allow/provide spec-compliant Global Positioning System operation and spec compliant Height of Burst operation.
摘要:
Integral dielectric heatspreader for transferring heat from semiconductor devices. A semiconductor device is mounted to a thermally conductive electrically insulating substrate, which forms the integral dielectric heatspreader. The heatspreader is then mounted to a package or a lower cost substrate such as a printed circuit board. The integral dielectric heatspreader may also support integral transmission lines, resistors, capacitors, or other bulk components. Performance of the heatspreader is enhanced through the use of thermal vias on a printed circuit board.
摘要:
An improved tip for a phacoemulsification needle having a lumen and a wall; wherein the improved tip comprises an oblique, generally concave face in side view and concentrates the majority of the effective cross-sectional area of the lumen toward the rear. An exemplary embodiment employs a maximum total face angle of 40 degrees with the face further comprising in side view from top to bottom: a first lead-in angle; a second horizontal section at a height of approximately 20-25 percent the needle diameter; and a third section defined as an arc of a circle extending tangential to the second horizontal section and extending to the top wall of the needle wherein the radius of the circle is approximately the distance between the second section and the upper wall. The improved tip is for use on hollow, ultrasonically vibrated needles of the type used for the surgical removal of cataract, abscess, hemorrhage, or other unwanted material. The improved tip is particularly designed to allow for the emulsification and aspiration of the lens of an eye in the lens chamber by increasing operative visability and reducing the incidence of pressure transients and surge, thereby reducing the danger of rupturing the posterior capsule and loss of vitreous. With the improved tip which permits material sculpting and manipulation, phacoemulsification can be accomplished without aid of another instrument.
摘要:
A method and apparatus is provided for communicating information from a customer to a broadband access network. The method begins when a wireless access point receives from a subscriber module a wireless RF carrier signal modulated with customer information. The customer information is demodulated and forwarded to a broadband modem in accordance with a first network protocol. The customer information is modulated by the broadband modem onto a communication channel of the broadband access network, thereby preventing wireless noise and/or interference from being directly coupled into the broadband access network.
摘要:
Collectible dice wherein each is unique and includes a cube-shaped element defining six flat sides; indicia positioned on predetermined of the sides; and an electromagnetic radiation transmitting/transponding element embedded within the cube-shaped element for transmitting a unique identifying signal or code for reception and reading by a receiver/reader. A packaging system for each die includes a base for receiving the die thereon and covers for removably fitting onto the base and over the die.