Abstract: Provided is an antenna module including a first planar inverted-F antenna radiator, a first ground plane, a second ground plane, and a conductor. The first planar inverted-F antenna radiator includes a first feeding terminal and a first ground terminal. The first ground terminal is connected to the first ground plane. The second ground plane is located on one side of the first ground plane. A gap exists between the first ground plane and the second ground plane. The conductor is located between the first ground plane and the second ground plane and connects the first ground plane with the second ground plane.

Abstract: An integrated circuit (IC) device includes a substrate and a circuit region over the substrate. The circuit region includes at least one active region extending along a first direction, at least one gate region extending across the at least one active region and along a second direction transverse to the first direction, and at least one first input/output (IO) pattern configured to electrically couple the circuit region to external circuitry outside the circuit region. The at least one first IO pattern extends along a third direction oblique to both the first direction and the second direction.

Abstract: An impact energy absorbing apparatus includes: a base, an axial crush component, a top plate, and an energy transfer component. The base is fastened to a protected object, and a tapered hole is provided on a top surface of the base. A bottom end face of the metal hollow rod of the axial crush component is joined with the top surface of the base. The energy transfer component includes a force bearing plate and a guiding rod extending outwards, where the force bearing plate is superimposed on a top surface of the metal hollow rod, the guiding rod is inserted to a position corresponding to the tapered hole in the metal hollow rod, an outer diameter of the guiding rod is less than a greatest diameter of the tapered hole, an inner diameter of the guiding rod is greater than a smallest diameter of the tapered hole.

Abstract: A method for determining a bias voltage of a servo signal of an optical disc drive is disclosed. The method includes: generating a plurality of sensing signals via an optical sensor of the optical disc drive; generating a first and a second servo signals according to the sensing signals; adjusting the first and the second servo signals to generate a first and a second adjusted signal respectively; and determining the bias voltage of the servo signal according to the first and the second adjusted signals.

Abstract: A method for determining a bias voltage of a servo signal of an optical disc drive is disclosed. The method includes: generating a plurality of sensing signals via an optical sensor of the optical disc drive; generating a first and a second servo signals according to the sensing signals; adjusting the first and the second servo signals to generate a first and a second adjusted signal respectively; and determining the bias voltage of the servo signal according to the first and the second adjusted signals.