A technique of reducing the Peak-to-Average Power Ratio of Multi-Carrier modulated signals in which peaks in the baseband signal that lie above a threshold amplitude are detected and used to generate a pulse sequence signal which, after shaping, is subtracted from the baseband signal to reduce its PAPR. The dual-standby terminal includes: a plurality of wireless communication units; a plurality of low-noise amplifiers located on reception paths of the wireless communication units, respectively; and a controller. The tubular substrate includes an outer sidewall with a catalyst layer located on the outer sidewall. Each of the pockets and each of the grooves opposing the pockets include a central axis passing through a ball center of the drive balls.