EBG resonator Fabry-Perot cavity J band MEMS RF switch Schottky diodes SiGe BiCMOS Technology: general issues UV illumination acetone detection broadband matching cavity resonator compact conversion loss ferromagnetic frequency doubler frequency-reconfigurable LNA gas sensors hetero junction bipolar transistor (HBT) high-gain laser processing low-noise amplifier (LNA) microwave microwave application microwave impedance millimeter wave multi-wall carbon nanotubes multimodal circuit nanowire resonant cavity