Abstract: A manufacturing method for antenna switching circuit includes the following steps of: providing a GaAs wafer, which includes a capping layer; disposing an isolation layer to the GaAs wafer for forming a device area; and disposing a gate metal on the capping layer within the device area, wherein an interface between the gate metal and the capping layer forms a Schottky contact, and the Schottky contact is parallel connected with an impedance. The present invention also discloses a semiconductor structure for antenna switching circuit.

Abstract: A switching circuit for an antenna includes a first switching unit, a second switching unit, a third switching unit, a fourth switching unit, a first clamping unit and a second clamping unit. The first clamping unit is coupled to the first switching unit and the fourth switching unit. The first clamping unit includes a first clamping device and a first resistor, which are connected in parallel. The second clamping unit is coupled to the second switching unit and the third switching unit. The second clamping unit includes a second clamping device and a second resistor, which are connected in parallel.

Abstract: A manufacturing method for antenna switching circuit includes the following steps of: providing a GaAs wafer, which includes a capping layer; disposing an isolation layer to the GaAs wafer for forming a device area; and disposing a gate metal on the capping layer within the device area, wherein an interface between the gate metal and the capping layer forms a Schottky contact, and the Schottky contact is parallel connected with an impedance. The present invention also discloses a semiconductor structure for antenna switching circuit.

Abstract: A method and apparatus using steam to sterilize liquid dispensers. This is achieved by injecting steam into a drained dispenser machine equipped with a cover having a safety valve that matches the top of the dispenser to provide sealing. The steam is generated by a steam generator physically integrated with the new liquid dispenser machine. The steam circulates through the fluid compartment of the liquid dispenser and continues through its conduits and exits at the taps which are held open by a stepped boss. The sanitizing period can be adjusted and controlled. After sterilizing the machine, the cap of the dispenser is removed and its taps are released in order to return the machine back to its normal operation.

Abstract: A PWM controller that effectively transitions between normal mode and green power mode is disclosed. A driver provides a normal drive signal during normal operation. A pulse width detector detects the pulse width of the PWM signal and if the pulse width drops below a threshold the normal mode drive signal will be turned off and a pulse ON time measurer will begin storing the pulse ON time. When the total ON time reaches a total ON time threshold or the output voltage drops below a voltage limit, a green mode drive signal will be output to the power converter. During green mode the driver will continue sending the green mode drive signal at intervals until a heavy load condition when the green mode drive signal will be shut off and the driver will resume sending the normal mode drive signal.

Abstract: A PWM controller that effectively transitions between normal mode and green power mode is disclosed. A driver provides a normal drive signal during normal operation. A pulse width detector detects the pulse width of the PWM signal and if the pulse width drops below a threshold the normal mode drive signal will be turned off and a pulse ON time measurer will begin storing the pulse ON time. When the total ON time reaches a total ON time threshold or the output voltage drops below a voltage limit, a green mode drive signal will be output to the power converter. During green mode the driver will continue sending the green mode drive signal at intervals until a heavy load condition when the green mode drive signal will be shut off and the driver will resume sending the normal mode drive signal.

Abstract: A method and apparatus using steam to sterilize liquid dispensers. This is achieved by injecting steam into a drained dispenser machine equipped with a cover having a safety valve that matches the top of the dispenser to provide sealing. The steam is generated by a steam generator physically integrated with the new liquid dispenser machine. The steam circulates through the fluid compartment of the liquid dispenser and continues through its conduits and exits at the taps which are held open by a stepped boss. The sanitizing period can be adjusted and controlled. After sterilizing the machine, the cap of the dispenser is removed and its taps are released in order to return the machine back to its normal operation.