基于Matlab的ASK、FSK、PSK信号的算法研究（外文翻译）.doc

Integrated circuit 1.Integrated circuit Integrated circuits are using specialized manufacture technology, components and attachment to the integrity of the circuit of printed on a substrate, and complete particular function.Integrated circuit on the structure features are: adopt direct coupling method; In order to overcome the temperature drifting which brought directly by the coupled way, using the phenomenon of temperature compensation method; adopt a large number of BJT or make a constant current source FET, instead of big resistance, or used to set the static current;use method mulriple pipe to replace of the single pipe performance. According to their function, integrated circuit of the different structure can be divided into analog integrated circuits, digital integrated circuit and mold mixture three integrated circuit.Analog integrated circuit also called linear circuit, used to produce, amplification and dealing with various kinds of analog signals (such as semiconductor radios audio signal), the input signal and the output signal has proportional relations.While digital integrated circuit used to produce, amplification and deal with various digital signals, digital signal means the signal is discreted based on time. (for example the 3G mobile phones, digital cameras, digital TV, computer CPU logic control and replay the audio and video signals). According to the production process of integrated circuit,it can be divided into semiconductor integrated circuit and membrane integrated circuit.Film integrated circuit can divided into thick-film integrated circuits and thin-film integrated circuit;According to the conductive types, they can be divided into a bipolar integrated circuit and unipolar type integrated circuits,they are all digital integrated circuits.Bipolar type IC manufacturing process is complicated,the consumption of power is bigger,the represent integrated circuits are TTL, HTL ECL, TL, STTL, developed - type etc. Unipolar type of inte