Abstract
The wireless interphone is an important branch in mobile communication,it is very extensive to use,and as a wireless interphone to receive part of the wireless interphone is a very important component.The design of the single FM radio receiver unit of the study and its working principles,the design of an FM receiver chip MC3363 to do to complete the core components of the wireless interphone to receive part of the work. MC3363 is a very high degree of integration of the FM receiver chip,through its internal mixer with the secondary-circuit frequency. Requires a mixer and a vibration of the margin that is the first intermediate frequency signal for the 10.7 MHz,and the mixing of the two-second margin that is,IF signal for the 455 kHz. Audio of the audio amplifier circuit chip LM386,as a voice amplifier.Established the integrity of the specific options,respectively,of the various functional modules to signal to control the design for the link.In hardware design,by the major chip will function modules organically organizations together to complete the system needs to function.
