DIGITAL TRANSMISSION/RECEPTION CIRCUIT

摘要

PURPOSE:To reduce the noises which are caused when the external vibrations are applied to a loop filter. CONSTITUTION:The non-lamination type capcitors C31, C32, C33 and C34 which have the capacirty larger than 1000pF are applied to a loop filter 30 of a variable local oscillator 1. These capacitors have no voltage effect nor noises so much despite the application of external vibrations. Thus the noises which are caused by the external vibrations applied to the filter 30 can be reduced.