Oscillator and communications device

摘要

Disclosed is an oscillator (10) wherein, when adjusting the characteristics of the oscillator (10), the time-consuming removal of a cap (11) and a substrate (41) at each measurement is dispensed with, and which can be manufactured at low cost. The oscillator (10) comprises a dielectric resonator (20), a circuit board (40), and an adjustment mechanism for adjusting the relative positional relationship between the dielectric resonator (20) and the circuit board (40); the dielectric resonator (20) having a dielectric substrate (21), electrodes (22) provided on two opposite faces of the dielectric substrate (21), and electrode removal portions (23) provided at predetermined positions on the electrodes (22); and the adjustment means comprising screws (35) and springs (34) for moving the dielectric resonator (20).