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The microwave and millimeter wave frequency range is nowadays widely exploited in a large variety of fields including (wireless) communications, security, radar, spectroscopy, but also astronomy and biomedical, to name a few. This Special Issue focuses on the interaction between the nanoscale dimensions and centimeter to millimeter wavelengths. This interaction has been proven to be efficient for the design and fabrication of devices showing enhanced performance. Novel contributions are welcome in the field of devices based on nanoscaled geometries and materials. Applications cover, but not are limited to, electronics, sensors, signal processing, imaging and metrology, all exploiting nanoscale/nanotechnology at microwave and millimeter waves. Contributions can take the form of short communications, regular or review papers.

Technology: general issues --- frequency doubler --- broadband matching --- Schottky diodes --- self-bias resistor --- conversion loss --- three-dimensional electromagnetic (3D-EM) model --- millimeter wave --- terahertz --- high-gain --- compact --- wideband --- resonant cavity --- Fabry–Perot cavity --- cavity resonator --- EBG resonator --- J band --- MEMS --- switch --- microwave --- ferromagnetic --- laser processing --- substrate integrated waveguide --- nanowire --- multi-wall carbon nanotubes --- microwave impedance --- small antennas --- gas sensors --- acetone detection --- microwave application --- UV illumination --- low-noise amplifier (LNA) --- frequency-reconfigurable LNA --- multimodal circuit --- SiGe BiCMOS --- hetero junction bipolar transistor (HBT) --- RF switch --- n/a --- Fabry-Perot cavity

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This Special Issue focuses on the state-of-the-art results from the definition and design of filters for low- and high-frequency applications and systems. Different technologies and solutions are commonly adopted for filter definition, from electrical to electromechanical and mechanical solutions, from passive to active devices, and from hybrid to integrated designs. Aspects related to both theoretical and experimental research in filter design, CAD modeling and novel technologies and applications, as well as filter fabrication, characterization and testing, are covered. The proposed research articles deal with different topics as follows: Modeling, design and simulation of filters; Processes and fabrication technologies for filters; Automated characterization and test of filters; Voltage and current mode filters; Integrated and discrete filters; Passive and active filters; Variable filters, characterization and tunability.

History of engineering & technology --- analogue-to-digital conversion --- ATHOS soft X-ray beamline --- broadband noise --- Hall probe --- offset fluctuation and drift --- three-axis teslameter --- undulator --- power line communication (PLC) --- conducted disturbances --- anti-interference filter --- smart home --- low-pass filter (LPF) --- stepped impedance resonator (SIR) --- hairpin resonator --- internal coupling --- defected ground structure (DGS) --- current mode --- universal filter --- VCII --- voltage conveyor --- SIMO filter --- microwave dielectric ceramics --- filter --- additive manufacturing --- digital light processing --- post annealing --- dielectric properties --- wideband --- bandpass filter --- quarter wavelength --- stepped-impedance resonator (SIR) --- ultra-wideband --- stub-loaded --- stepped impedance resonator --- active filters --- anti-aliasing filters --- HBT --- inductorless --- low-pass filters --- SiGe --- switched-capacitor filters --- low-voltage --- finFET --- operational amplifier --- voltage-controlled oscillator --- unity-gain bandwidth --- varactor --- total harmonic distortion --- phase noise --- active inductor --- MMIC --- tunable filters --- analogue-to-digital conversion --- ATHOS soft X-ray beamline --- broadband noise --- Hall probe --- offset fluctuation and drift --- three-axis teslameter --- undulator --- power line communication (PLC) --- conducted disturbances --- anti-interference filter --- smart home --- low-pass filter (LPF) --- stepped impedance resonator (SIR) --- hairpin resonator --- internal coupling --- defected ground structure (DGS) --- current mode --- universal filter --- VCII --- voltage conveyor --- SIMO filter --- microwave dielectric ceramics --- filter --- additive manufacturing --- digital light processing --- post annealing --- dielectric properties --- wideband --- bandpass filter --- quarter wavelength --- stepped-impedance resonator (SIR) --- ultra-wideband --- stub-loaded --- stepped impedance resonator --- active filters --- anti-aliasing filters --- HBT --- inductorless --- low-pass filters --- SiGe --- switched-capacitor filters --- low-voltage --- finFET --- operational amplifier --- voltage-controlled oscillator --- unity-gain bandwidth --- varactor --- total harmonic distortion --- phase noise --- active inductor --- MMIC --- tunable filters

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• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

This Special Issue focuses on the state-of-the-art results from the definition and design of filters for low- and high-frequency applications and systems. Different technologies and solutions are commonly adopted for filter definition, from electrical to electromechanical and mechanical solutions, from passive to active devices, and from hybrid to integrated designs. Aspects related to both theoretical and experimental research in filter design, CAD modeling and novel technologies and applications, as well as filter fabrication, characterization and testing, are covered. The proposed research articles deal with different topics as follows: Modeling, design and simulation of filters; Processes and fabrication technologies for filters; Automated characterization and test of filters; Voltage and current mode filters; Integrated and discrete filters; Passive and active filters; Variable filters, characterization and tunability.

analogue-to-digital conversion --- ATHOS soft X-ray beamline --- broadband noise --- Hall probe --- offset fluctuation and drift --- three-axis teslameter --- undulator --- power line communication (PLC) --- conducted disturbances --- anti-interference filter --- smart home --- low-pass filter (LPF) --- stepped impedance resonator (SIR) --- hairpin resonator --- internal coupling --- defected ground structure (DGS) --- current mode --- universal filter --- VCII --- voltage conveyor --- SIMO filter --- microwave dielectric ceramics --- filter --- additive manufacturing --- digital light processing --- post annealing --- dielectric properties --- wideband --- bandpass filter --- quarter wavelength --- stepped-impedance resonator (SIR) --- ultra-wideband --- stub-loaded --- stepped impedance resonator --- active filters --- anti-aliasing filters --- HBT --- inductorless --- low-pass filters --- SiGe --- switched-capacitor filters --- low-voltage --- finFET --- operational amplifier --- voltage-controlled oscillator --- unity-gain bandwidth --- varactor --- total harmonic distortion --- phase noise --- active inductor --- MMIC --- tunable filters