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An RF mixer is one of the key elements in wireless telecommunication systems, which is used for example for modulation and demodulation. Due to the fact, that such a functionality can only be achieved by a nonlinear system, it is crucial that the nonlinearity is taken into account for the analysis and design of RF mixers. For this reason, the analysis and design process is still a challenging task...
In wireless communication systems oscillators are basic components in the transmitter and receiver unit. However, the design process of an oscillator is very challenging. At first, an appropriate topology has to be selected and then the circuit has to be dimensioned. For this purpose, a high dimensional design space has to be considered in order to meet given specifications. Usually this design step...
The analysis of nonlinear dynamic circuits is still a challenging subject since analytic solutions are rarely available. Therefore, several techniques are suggested to solve the corresponding circuit equations approximately such that qualitative as well as quantitative properties are preserved. In small signal analysis of nonlinear circuits the nonlinear part of the Taylor series around an operational...
In this contribution, two different approaches to the analysis of nonlinear analog circuits in the frequency domain using scattering variables are examined, the nonlinear scattering parameters (S-parameters) based on the Volterra series and the X-parameters. After the theoretical backgrounds are shortly recapitulated, the benefits and drawbacks of each method are outlined. Both methods are applied...
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