Abstract: An adaptive measurement and calculation method for luminescence values of a chemiluminescence analyzer is provided. A fixed step length is adopted for continuous multi-point reading to obtain a complete correspondence diagram of detection positions and luminescence values. Two nearest luminescence values on the left and right sides of a maximum value are selected, the nearest luminescence values on both sides are connected to form a straight line, and an intersection of two straight lines is taken as an approximate maximum luminescence value. The measurement and calculation method can adapt to random positions of the detected object, and stably obtain the approximate maximum luminescence value, thus reducing increased complex hardware design and cost to confirm accuracy of the measurement position.

Abstract: A system for on-line measuring the thickness of a continuous casting billet and adjusting a rolling reduction amount, is capable of giving an accurate, constant and rapid feedback on the thickness of the billet in the continuous casting process online, avoiding the deviation of the rolling reduction amount of the billet in the continuous casting production process which is triggered by the factors such as the capacity of the continuous casting equipment, the execution deviation of the rolling reduction process, the metal solidification attribute such as non-preset expansion and contraction, so as to maximize the function of the continuous casting rolling reduction and improve the solidification quality of the billet.

Abstract: A method of extracting cross-sections for performing vortex detection in a flow volume is provided. The method includes the steps of: (i) providing a simulated flow field for a meshed volume, the flow field providing discrete values of a selected flow parameter at respective positions distributed throughout the volume as determined by the meshing of the volume, the selected flow parameter being one of Q-criterion, vorticity magnitude, velocity magnitude and lambda2; (ii) calculating, for each position, a direction of slowest change of the selected flow parameter; (iii) identifying one or more of the positions for 2D cross-section extraction; and (iv) extracting for the, or each, identified position a respective 2D cross-section from the volume, the extracted cross-section containing the respective identified position and being perpendicular to the calculated direction of slowest change at the respective identified position.

Abstract: A system and method for detecting the performance of a bi-polarized antenna including two antennas in a wireless communication system is provided. The system may include at least one directional coupler connected to the bi-polarized antenna configured to couple a transmitting signal of the first antenna and another signal from the bi-polarized antenna; a power detector connected to the at least one directional coupler and configured to measure the power of the transmitting signal and the another signal as analog results, respectively; an analog-digital converter connected to the power detector and configured to convert the analog results into digital results; and a processing unit connected to the analog-digital converter and configured to calculate the difference of the digital results. The performance of the bi-polarized antenna can be accessed by the above-measured polarization isolation.

Abstract: In various embodiments of the present disclosure, an apparatus for wirelessly transmitting or receiving communication signals may include multiple active elements to transmit or receive communication signals wirelessly; and multiple active modules correspondingly coupled to the multiple active elements and configured to cooperate with respective ones of the multiple active elements; in which the respective ones of the multiple active modules include a power amplifier configured to amplify communication signals to be transmitted and a low noise amplifier configured to amplify communication signals received, and in which the respective ones of the multiple active modules further include a first phase shift configured to shift phases of the communication signals to be transmitted and a second phase shift configured to shift phases of the communication signals received. Other embodiments may be described and claimed.

Abstract: A method and system for controlling the transmitting power of an antenna is provided, the system including a detecting device directly receiving signals from the antenna, the detecting device configured to obtain a voltage standing wave ratio of the antenna; and a control device coupled to the detecting unit. The control device includes a monitoring unit configured to calculate a real transmitting power value of the antenna based on the voltage standing wave ratio; a comparing configured to compare the real transmitting power value with an expected power value to generate an error value; and an adjusting unit configured to output a power adjusting signal for controlling the transmitting power of the antenna based on the error value.

Abstract: In various embodiments of the present disclosure, an apparatus for wirelessly transmitting or receiving communication signals may include multiple active elements to transmit or receive communication signals wirelessly; and multiple active modules correspondingly coupled to the multiple active elements and configured to cooperate with respective ones of the multiple active elements; in which the respective ones of the multiple active modules include a power amplifier configured to amplify communication signals to be transmitted and a low noise amplifier configured to amplify communication signals received, and in which the respective ones of the multiple active modules further include a first phase shift configured to shift phases of the communication signals to be transmitted and a second phase shift configured to shift phases of the communication signals received. Other embodiments may be described and claimed.

Abstract: A system and method for detecting the performance of a bi-polarized antenna including two antennas in a wireless communication system is provided. The system may include at least one directional coupler connected to the bi-polarized antenna configured to couple a transmitting signal of the first antenna and another signal from the bi-polarized antenna; a power detector connected to the at least one directional coupler and configured to measure the power of the transmitting signal and the another signal as analog results, respectively; an analog-digital converter connected to the power detector and configured to convert the analog results into digital results; and a processing unit connected to the analog-digital converter and configured to calculate the difference of the digital results. The performance of the bi-polarized antenna can be accessed by the above-measured polarization isolation.

Abstract: A method and system for controlling the transmitting power of an antenna is provided, the system including a detecting device directly receiving signals from the antenna, the detecting device configured to obtain a voltage standing wave ratio of the antenna; and a control device coupled to the detecting unit. The control device includes a monitoring unit configured to calculate a real transmitting power value of the antenna based on the voltage standing wave ratio; a comparing configured to compare the real transmitting power value with an expected power value to generate an error value; and an adjusting unit configured to output a power adjusting signal for controlling the transmitting power of the antenna based on the error value.

Abstract: Transceivers for use in time division telecommunication units in a transmitting mode, include switching a direct digital synthesizer (DDS) driven phase locked loop (PLL) into a modulating state and supplying a modulation signal to the DDS and switching in the PLL a first filter, thus allowing the generation of an improved modulated signal. In a receiving mode, the DDS driven PLL is switched into an oscillating state including supplying a non-modulation signal to the DDS and switching in the PLL a second filter, thus allowing demodulation with reduced phase noise. A transmitter part and a non-transmitter part share a single DDS driven PLL.

Abstract: Transceivers for use in time division telecommunication units like mobile phones and base stations can be produced at lower costs by, in a transmitting mode, switching the direct digital synthesizer (DDS 24) driven phase locked loop (PLL 10-15) into a modulating state and supplying a modulation signal to the DDS and switching in the PLL a first filter (12) allowing the generation of an improved modulated signal, and by, in a receiving mode, switching the DDS driven PLL into an oscillating state and supplying a non-modulation signal to the DDS and switching in the PLL a second filter (13) allowing demodulation with reduced phase noise. A transmitter part (2) and a non-transmitter part (4,6) share a single DDS driven PLL, based upon the basic idea of using important parts in low cost transceivers for both modes, instead of using different parts for different modes, and achieve a good performance.