Modeling of an in-line MEMS frequency discriminator for RF receiver front-end application

This paper concentrates on the modeling of an inline MEMS (microelectromechanical systems) frequency discriminator which is applied to the RF (radio frequency) receiver front-ends. In addition to the frequency detection of the RF signal, the resonant frequency of the VCO (voltage controlled oscillator) can be tuned through the output dc thermal voltage generated by the in-line MEMS frequency discriminator. The equivalent circuit model of the in-line frequency discriminator is established and the measurement verification is also implemented. At last, a simulation of the whole RF receiver front-end is processed by computer-aided software and the real-time simulation waveforms are obtained.