In this study, to reduce the average symbol error rate, and improve coverage reliability of unmanned aerial vehicles (UAVs) ground communication systems. case, we propose a reconfigurable intelligent surfaces (RISs) assisted for UAV scheme, where radio frequency (RF) signal generator sends an unmodulated carrier from UAVs RIS. At surface, RIS modulates each signal, is as generator. We carry out...

1. First, wire up the circuit as shown in the diagram above, with the resistor, inductor, and capacitor connected in series to one another and the signal generator. Use the output of the Science Workshop 750 as the signal generator. 2. Start with the following values for resistance, inductance, and capacitance: • R = 500 Ω; L = 100 mH = 0.1 H; C = 1 μF = 1 x 10 F 3. Throughout the experiment yo...

this paper addresses the design of an observer-based fault diagnosis scheme, which is applied to some of the sensors and actuators of a wind turbine benchmark model. the methodology is based on a modified sliding mode observer (smo) that allows accurate reconstruction of multiple sensor or actuator faults occurring simultaneously. the faults are reconstructed using the equivalent output error i...

This paper proposes an RF signal generator using a time domain harmonic suppression technique based on Fourier series analysis. The circuit consists of four differential ring voltage control oscillators (VCO’s) with phase differences and the pulse signal summing circuit. By summing pulse signals from VCO’s with appropriate phase differences determined by Fourier series in time domain, the third...

The recent development of Global Navigation Satellite Systems (GNSS) software receivers has brought a new perspective to receiver design. The first step necessary to use them is to have access to sampled data at an Intermediate Frequency (IF). These sampled data can be provided through two different ways. First, an RF frontend that would sample data coming from either the real satellites or fro...

Center for Adaptive Systems and Department of Cognitive and Neural Systems Boston University, 111 Cummington Street, Boston, MA 02215 A four-channel neural pattern generator is described in which both the frequency and the relative phase of oscillations are controlled by a scalar arousal or GO signal. The generator is used to simulate quadruped gaits; in particular, rapid transitions are simula...

This article presents a method for power amplifier linearization known as baseband adaptive digital predistortion. Using an EDA software package with both DSP (Digital Signal Processing) and RF capabilities, connected to a vector signal generator and a signal analyzer, this hardware/software connected system allows an actual hardware power amplifier to be optimally linearized for a specific wir...

Resistance of d~~erent types of digital radio signals to certain interferences and jamming signals is essential @om milita~ point of view. An experimental method was chosen to take into consideration injluerwe of all factors and elements to achieve more accurate results. This paper presents results of experiments concerning influence of intentional jamming on digital FSK and PSK demodulators. S...

An integrated optical millimetre-wave signal generator based on a coupled microring resonator, which doubles the frequency of the electrical signal driving a phase modulator, is proposed and experimentally demonstrated for future radio-over-fibre systems. The coupled microring notch filter was fabricated on a silicon-on-insulator wafer. A high extinction ratio optical millimetre-wave signal was...

This paper presents a glitchy-clock generator integrated in FPGA for evaluating fault injection attacks and their countermeasures on cryptographic modules. The proposed generator employs the functional block of clock management widely included in modern FPGAs and outputs a clock signal including a glitchy-clock cycle timely. The shape and timing of the glitchy-clock cycle are controlled accurat...