An all-optical UWB pulses generation and modulation scheme using cross phase modulation (XPM) effect of semiconductor optical amplifier (SOA) and DWDM-based multi-channel frequency discrimination is proposed and demonstrated, which has potential application in multiuser UWB-Over-Fiber communication systems. When a Gaussian pulse light and a wavelength-tunable CW probe light are together injecte...

Step-Frequency signal is widely used in radar systems. However it suffers from the technique challenges that are the imaging moving-targets. In this paper, a new compound modulation signal is analyzed. It combines phased code modulation during the pulse and Step-Frequency modulation between the pulses time, and it is called as phase-coded StepFrequency signal. Numeric simulation comparison expe...

Abslract. Analog neuron circuits based on both frequency modulation and pulse modulation are investigated. The circuits are compared in terms of size, power, performance, and reliability; frequency modulation shows advantages in each area. Test circuits were designed and fabricated in 2/zm CMOS technology. The frequency modulated neuron has an operational frequency of 3.125 MHz and a dynamic ra...

Sinusoidal pulse width modulation is a popular modulation for most alternating current induction motor. It only requires fewer calculations and is easy to implement. However, the shortcomings of using it are low DC voltage utilization, and poor inverter transmission capability. In recent years, there is an increasing trend and more research concentration of using space vector pulse width modula...

We propose a novel technique to implement arbitrary pulse shaping of an ultrashort pulse by intensity-only modulation in the frequency domain. The intensity-only modulation is realized by nonuniformly spaced sampling in the frequency domain. By properly designing the sampling function, multiple pulses in the time domain will be generated with one of which being the desired waveform. The desired...

This paper sprays five hybrid pulse width modulation strategies for three level inverters in FPGA platform. The proposed hybrid-modulation strategy is an amalgamation of fundamental-frequency modulation and any carrier based pulse width modulation (SPWM) invoking the performance of the well-known carrier based PWM modulations. The main philosophy of this modulation is the reduction of switching...