Traditionally, it needs to switch capacitors or inductors to achieve such wide frequency band.It not only occupies large chip area but also too much capacitor may cause the divider fail to work.

• 传统上要以切电容或切电感方式达到如此大的频带，不仅需耗费相当大的面积，而且过多的电容也可能导致除频器无法运作。