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In this work, the thermal effects of a tunable matching network (TMN) based on micro electro mechanical systems (MEMS) are investigated. A reconfigurable power amplifier (PA) is proposed based on a TMN. The thermal effects are modeled and their influence on the linearity of the PA are addressed. The study is aided by a behavioral model of the capacitive MEMS switch which has been extended in order...
In this work, the impact of the intrinsic nonlinear effects of bulk acoustic wave (BAW) filters on the demodulation performance of an LTE user equipment (UE) receiver at 2600 MHz is evaluated. The nonlinear effects that shape the generation of higher harmonics in the BAW resonator are covered in a nonlinear model implemented in Keysight's advance design system (ADS) and validated through nonlinear...
A simulation methodology dealing with the complexity of multiphysical micro electro mechanical system (MEMS) models and their evaluation according to RF specification is presented. It is focused towards the evaluation of a hybrid MEMS-CMOS RF oscillator prior to its realization, based on the demodulation performance of a long-term evolution (LTE) user equipment (UE). The proposed multiphysical simulation...
A theoretical approach for the specification of shunt MEMS switches suitable for Tunable Matching Networks (TMN) at 1.9GHz is presented. DC-contact fixed-fixed beam MEMS switches designed with series metal-insulator-metal (MIM) capacitors at the grounding plane of a CPW transmission line provide the basic design block for the TMN. In the down-state, the MEMS switch makes an ohmic contact with the...
A behavioral model of a BAW resonator realized in VerilogA is presented. VerilogA models can be integrated in all leading RF design tools allowing simulations of BAW filters at a system and circuit level. In that way a coupled design of the conventional electronics and the electro-mechanical BAW is now possible. By using the presented model the system designer has the possibility to optimize both...
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