frequency band; waveband
5Gは新しい周波数帯を使う。
5G uses new frequency bands.
政府は通信会社に周波数帯を割り当てた。
The government allocated frequency bands to telecom companies.
高い周波数帯は高速だが、電波が届く範囲が狭い。
Higher frequency bands offer high speed, but their signal range is limited.