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This paper demonstrates the design and implementation of a miniaturized bandpass filter integrated with switch function in commercial GaAs pHEMT process for 3.5GHz WiMAX application. A tapped-input, capacitive-loaded hairpin-comb bandpass filter is proposed to benefit from the high-density metal-insulator-metal capacitor in the GaAs process, such that the required electrical length of coupled-line...
Monolithically integrated, wide tuning range low pass filters have been demonstrated based on electrothermally driven MEMS switches. The integrated system is comprised of copper spiral inductors, polysilicon capacitors and electrothermal MEMS actuators on a single 4.3 times 2.4 mm2 chip; the design is optimized for the selection of three commonly used commercial cut-off frequencies: (fc) at 0.9 GHz,...
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