Low-frequency noise characteristics of GaN vertical PIN diodes—Effects of design, current, and temperature

THESIS FOR THE DEGREE OF LICENTIATE OF ENGINEERING GaN HEMT Low Frequency Noise Characterization for Low Phase Noise Oscillator Design

Noise characteristics and detectivity of YBa2Cu3O7 superconducting bolometers: Bias current, frequency, and temperature dependence

Meander line patterned infrared detectors, with values of resistance Ronset at the onset temperature Tc onset of 3–5 kV, were fabricated from YBa2Cu3O72x superconducting material on MgO and SrTiO3 crystalline substrates. Noise voltages from the samples were measured versus bias current, radiation modulation frequency, and temperature, in both the normal and superconducting states. Four major ty...

Design of an S-band Ultra-low-noise Amplifier with Frequency Band Switching Capability

In this paper, an ultra-low-noise amplifier with frequency band switching capability is designed, simulated and fabricated. The two frequency ranges of this amplifier consist of the 2.4 to 2.5 GHz and 3.1 GHz to 3.15 GHz frequency bands. The designed amplifier has a noise figure of less than 1dB, a minimum gain of 23 dB and a VSWR of less than 2 in the whole frequency band. The design process s...

Design Modification of Rogowski Coil for Current Measurement in Low Frequency

The principle object of this paper is to offer a modified design of Rogowski coil based on its frequency response. The improvement of the integrator circuit for nullifying the phase difference between the waveforms of the measured-current and the corresponding terminal voltage is a further object of this investigation. This paper addresses an accurate, yet more efficient measuring and protect...

Low Frequency Noise Characteristics of Multimode and Singlemode Laser Diodes