Abstract: A communication device includes a power amplifier that generates power signals according to one or more operating bands of communication data, with the amplitude being driven and generated in output stages of the power amplifier. The final stage can include an output passive network that suppresses suppress an amplitude modulation-to-phase modulation (AM-PM) distortion. During a back-off power mode a bias of a capacitive unit of the output power network component can be adjusted to minimize an overall capacitance variation. An output passive network can further generate a flat-phase response between dual resonances of operation.

Abstract: A cassette loading device comprising a cassette holder having guide groove, a cover plate connected to the cassette holder by a connecting member which includes a guide groove, and a U-shaped leaf spring attached to the cover plate so that the cassette holder is provided with a large space in the vicinity of an opening thereof for advantageously and easily inserting and removing the tape cassette into and from the cassette holder.

Abstract: A housing construction of a top loading-type videocassette recorder, comprising a pair of brackets and a cassette holder disposed between the brackets. In the construction, a spring serving as a power source for operating the cassette holder and a damping mechanism for avoiding sudden vertical movement of the cassette holder are placed in a dead space possessed by an opened lid of a tape cassette above the upper surface of the cassette holder, thereby enabling the recorder to be compact and light.

Abstract: A turntable for use in a microwave oven which comprises a first rotatable axle secured to the plate of the turntable and disposed within an annular holder, the first rotatable axle including a cavity disposed along its center, an actuating gear having a shaft extended therefrom for being actuated to engage the cavity of the rotatable axle, the actuating gear including an aperture disposed along its center for receiving a second axle supported on a lower plate of a housing member and an annular cam disposed at the underside thereof, the annular cam having an inclined surface disposed along its periphery, a supporting roller secured to the lower plate of the housing member for slidably contact with the declined surface of the annular cam for moving the actuating gear upwardly and downwardly, and a main driving gear actuated by a motor, the main driving gear geared with the actuating gears for rotating horizontally and simultaneously vertically so that the turntable rotates and moves vertically.

Abstract: A mechanism for opening and closing a door of a home electronic equipment which comprises a door hinged to a body and a door locking member pivotably mounted to the door thereof whereby only one action pulling a handle of the door makes the door locking member to be displaced into the unlocking position and simultaneously opens the door.