Submicron YBCO bicrystal Josephson junctions (JJ) and devices for high frequency applications were designed, fabricated and experimentally studied. The key elements of these devices are bicrystal sapphire substrates with symmetric misorientation angles 14.2 , 18.4 and 24 which were fabricated by a solid-state intergrowth method. A technological process based on deep ultraviolet photolithography...

In this paper, a new application of an electro-active-polymer for a radio frequency (RF) switch is presented. We used an ionic polymer metallic composite (IPMC) switch to change the operating frequency of an inverted-F antenna. This switch is light in weight, small in volume, and low in cost. In addition, the IPMC is suitable for mobile devices because of its driving voltage of 3 volts and thic...

Short-Abstract—Recent advances in InP semiconductor device design and high-yield processing have led to the demonstration of transistors with power gain cut-off frequencies (fmax) greater than 1 THz. More importantly, the devices are supported by low-loss interconnects, accurate models and robust design kits. Employing a systematic design methodology that includes significant EM and thermal mod...

High temperature operation capability of power devices enhances performance of the system especially in the automotive industry where weight and volume are critical factors. SiC devices are capable of operating at higher voltages, higher frequencies, and higher junction temperatures, which result in significant reduction in weight and size of the power converter and an increase in efficiency. I...

The principle of operation of intense radiation devices such as microwave tubes, free-electron lasers, and masers, is based on a distributed interaction between an electron beam and electromagnetic radiation. Some of the effects emerging during the interaction involve a continuum of frequencies in their broadband spectrum. We developed a three-dimensional, space-frequency theory for the analysi...

Superconducting qubits are widely used in quantum computing research and industry. We describe a superconducting kinetic inductance qubit (and introduce the term Kineticon to it) operating at W-band frequencies with nonlinear nanowire section that provides anharmonicity required for two distinct energy states. Operating higher may relax dilution refrigerator temperature requirements these devic...

Embracing the era of higher operating frequencies, expanding functionality, and increased integration scale, modern circuit design relies more on accurate prediction electromagnetic (EM) effects resulting from undesired radiation mutual coupling digital electronic devices. In this paper, an electromagnetic-physics-based simulation method is proposed, to simulate semiconductor devices circuits. ...

The THz frequency range represents a true challenge for designers, fabrication technologies and characterization systems. So far, huge technological obstacles have prohibited any system realization different from laboratory one. Furthermore, most of the applications in the THz frequency range require a level of power not achievable by optoelectronic devices at room temperature or by solid-state...

A flip-chip-type MMIC architecture is used to build a wideband filter with ultrathin iron (Fe) films grown on compound semiconductor substrate (GaAs). Microwave and millimeter-wave components incorporating these ferromagnetic films possess the unique capability of having a resonance frequency that can be easily tuned by an externally applied magnetic bias. A bandstop notch filter is realized us...