A quadrature oscillator capable of lowering phase noise and power dissipation is disclosed. The joint structure includes opposing bell-formed ends with reduced corrugations, a connector insert including a gasket on either end and a push-ring. An intermediate conveying device is arranged between the first and second chain conveyors and configured to grip intermediate products of collected printed sheets formed at the end of the collecting process on the first chain conveyor and to transport and transfer the intermediate products onto the second chain conveyor. The rolling piston thus causes the cover to move from the closed position to the open position. The white space base station also maps the transmission frequency ranges to virtual frequency ranges for transmission by a software-defined radio employing spectrum virtualization. In an image display region, a capacitor wire is formed to be connected to or to extend to the capacitor electrodes, and the capacitor wire also extends to exterior circuit connection terminals provided in a peripheral region.