COMMUNICATION EQUIPMENT

摘要

PURPOSE:To simplify the synchronizing circuit and to reduce the synchronization acquisition time by providing a low speed clock generator and a high speed clock generator to switch the hopping speed. CONSTITUTION:A low speed clock generator 6 and a high speed clock generator 7 are provided and they are used switchingly. That is, an input to a reception antenna 1 is amplified by a high frequency amplifier 2 and fed to a mixer 4. Another input to the mixer 4 is an output of a local oscillator 3 and the output is hopped at a frequency parted by a difference of an intermediate frequency apart from an input of the reception antenna 1 with a digital output of a hopping pattern generator 5. Then the low speed clock generator 6 and a switch 15 are provided and the low speed clock generator 6 controls the hopping pattern generator 5 till the synchronization acquisition is established. Thus, the synchronizing circuit is simplified and the synchronization acquisition time is reduced.