Abstract: A semiconductor package including one or more dam structures and the method of forming are provided. A semiconductor package may include an interposer, a semiconductor die bonded to a first side of the interposer, an encapsulant on the first side of the interposer encircling the semiconductor die, a substrate bonded to the a second side of the interposer, an underfill between the interposer and the substrate, and one or more of dam structures on the substrate. The one or more dam structures may be disposed adjacent respective corners of the interposer and may be in direct contact with the underfill. The coefficient of thermal expansion of the one or more of dam structures may be smaller than the coefficient of thermal expansion of the underfill.

Abstract: A method for correcting antenna phases includes a beam angle calculating step, beam angle adjusting step, antenna emission measuring step and beam angle correcting step. The method involves comparing a difference between the ideal antenna phase value and the measured beam angle value, determining according to the difference that the beam direction of the antenna needs to be corrected, and adding the difference to a current ideal antenna phase value in the algorithm to calculate another ideal antenna phase value for being sent to the phase control circuit and used in executing the beam angle adjusting step in a next instance of measurement process until the beam angle correcting step finds the difference which requires no correction of the beam direction of the antenna. Therefore, temperature-dependent errors do not occur to beam directions, thereby enhancing the communication efficiency of an antenna system.

Abstract: A method for correcting antenna phases includes a beam angle calculating step, beam angle adjusting step, antenna emission measuring step and beam angle correcting step. The method involves comparing a difference between the ideal antenna phase value and the measured beam angle value, determining according to the difference that the beam direction of the antenna needs to be corrected, and adding the difference to a current ideal antenna phase value in the algorithm to calculate another ideal antenna phase value for being sent to the phase control circuit and used in executing the beam angle adjusting step in a next instance of measurement process until the beam angle correcting step finds the difference which requires no correction of the beam direction of the antenna. Therefore, temperature-dependent errors do not occur to beam directions, thereby enhancing the communication efficiency of an antenna system.

Abstract: An oxyhydrogen fuel producing device with a plug-in electrobath. The oxyhydrogen fuel producing device has the plug-in electrobath, a water replenishing system, a cooling system, and a DC switching power supply. The plug-in electrobath has a casing filled with the electrolyte, an insulating plug-in slot module provided with a plurality of slots, a plurality of electrode boards respectively inserted in the slots to form an electrode voltage dividing structure in the casing, a gas outlet, a heat dissipation outlet sending out the electrolyte in the casing, and a heat dissipation inlet receiving the electrolyte to the casing. The cooling system cools the electrolyte sent out from the heat dissipation outlet and recycling the electrolyte to the heat dissipation inlet. The DC switching power supply supplies voltage required in electrolysis performed in the plug-in electrobath.

Abstract: A security control system for an oxyhydrogen fuel producing apparatus. The security control system includes a system control device, a first pressure control device, a second pressure control device, a temperature control device, a water level control device and a catalyst level control device to improve and ensure the security of the oxyhydrogen fuel producing apparatus.