基于模拟乘法器MC1496的混频器设计汇总.doc

摘 要 在高频电子线路中，振幅调制、同步检波、混频、倍频、鉴频等调制与解调的过程均可视为两个信号相乘的过程，而集成模拟乘法器正是实现两个模拟量电压或电流相乘的电子器件。采用集成模拟乘法器实现上述功能比用分立器件要简单得多，而且性能优越，因此集成模拟乘法器在无线通信、广播电视等方面应用较为广泛 关键词：MC1496乘法器；混频器；Multisim Abstract In high frequency electronic circuit course, amplitude modulation,synchronization demodulation, mixer, frequency, frequency modulation and demodulation are regarded as the process of the two signals are multiplied, and the integrated analog multiplier is the realization of two analog electronic device, a voltage or current multiplication. The integrated analog multiplier to achieve the above functions than discrete devices are much more simple, and superior performance, therefore the integrated analog multiplier is widely used in wireless communications, radio and television broadcasting. The mixer in communication engineering and radio technology,application is very extensive, in modulation system, the input of baseband signal are through frequency conversion into a high frequency modulated signal. In the demodulation process, the received modulated high frequency signal after frequency conversion, into intermediate frequency signals corresponding to. Especially in the superheterodyne receiver, mixer is widely used, mixing circuit is the key module of Applied Electronic Technology and professional radio must master. Multisim10 is a new generation of electronic platform belongs to, is an excellent computer widely used an electronic technology field simulation software. The main content is the mixer application design and simulation based on MC1496, expounds the basic principle of mixer, and the circuit design and Simulation in Multisim environment to create integrated circuit MC1496 multiplier circuit module, the analog multiplier MC1496 to complete the design and Simulation of the circuit, and combined with the dual trace oscilloscope to achieve signal mixing, the switching frequency of the received signal the intermediate frequency signal, a need. Key Words：MC1496 multiplier;