A novel zone melting method to purify industrial phosphorus is introduced. Since there is no chemical solvent for phosphorus, chemical extraction purification does not work for arsenic purification. Zone melting is a method for removing impurities from solid materials. This method with a special set.....
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Three-dimensional integrated circuit (IC) is considered to be one of the most promising method for implementing future high density and performance IC applications. However, setting up a satisfying IC device is still a very challenging technically under current technology. Problems include challenge.....
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Power management is necessary to reduce standby power consumption of low-power portable applications such as mobile phones and personal digital assistants (PDAs). A low-dropout regulator (LDO) is a type of voltage regulator that is widely utilized in power management integrated circuits. In order to.....
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Conventionally, frequency tuning is achieved by changing the capacitance of a tank using varactor. However, it is more power efficient to minimize the capacitance of the tank and adjust the inductance for frequency variation. Therefore, the need for a variable inductor arises.A novel integrated vari.....
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With the development of ball grid array (BGA), the strength of BGA becomes important. High speed single solder ball test is one effective method to test BGA strength. This design provides one machine to test single sold ball strength at high speed. The advantage of this design is multi-solder balls .....
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