public accountability is a sign of modern and democratic administration. accountability has become a topic of concern in governance literature. the question of holding politicians and administration accountable in new governance environment, where many traditional means for controlling government have been no longer fully applied, has gained wide recognition. as a consequence, new types of acco...

Wideband microwave signals with high time-frequency linearity for high-resolution radar applications can be optically generated using high-speed electronic waveform generators. Frequency-shifting modulation in an optical cavity provides attractive approach to generate broadband reduced complexity requiring only MHz-level electronics. However, the in-loop signal instability and inter-pulse inter...

Orthogonal Frequency Division Multiplexing is a key contender for broadcasting standards, due to its immunity towards multipath fading and ease of implementation. Here a novel scheme to exploit the frequency diversity within OFDM subcarriers has been proposed which further increases the bit error rate performance. The diversity is achieved by circularly shifting the OFDM subcarrier coefficients...

PWM inverter systems have been used in many industrial processes in order to control voltage, frequency and harmonic. On the other hand, High Frequency Resonant DC Link Inverters have been proposed to reduce the switching losses of power devices. This paper reports a simulation developed to use PWM technique with the High Frequency Resonant DC Link Inverter in order to increase the operational ...

In the primate visual cortex, the phase of spikes relative to oscillations in the local field potential (LFP) in the gamma frequency range (30-80 Hz) can be shifted by stimulus features such as orientation and thus the phase may carry information about stimulus identity. According to the principle of communication through coherence (CTC), the relative LFP phase between the LFPs in the sending a...

Traditionally, the digital implementation of modems is restricted to parts operating at baseband frequency. At higher frequencies , roughly 30 MHz and beyond, analog technologies such as SAW lters provide a better power/performance gure 1]. In this paper, we show how this barrier can be broken by trading programmability for speed. Using a digital multirate lter structure that ooers combined int...

To study the dynamical behaviour of the engineering and physical systems, we often need to capture their continuous behaviour, which is modeled using differential equations, and perform the frequency-domain analysis of these systems. Traditionally, Fourier transform methods are used to perform this frequency domain analysis using paper-and-pencil based analytical techniques or computer simulati...

Phased-array systems, a special case of multiple-input-multiple-output (MIMO) systems, take advantage of spatial directivity and array gain to increase spectral efficiency. Implementing a phased-array system at high frequency in a commercial silicon process technology presents several challenges. This thesis focuses on the architectural and circuit-level trade-offs involved in the design of the...

Hybrid superconducting-photonic microresonators are a promising platform for realizing microwave-to-optical transduction. However, the absorption of scattered photons by superconductors leads to unintended microwave resonance-frequency variation and line-width broadening. Here, we experimentally study dynamics this effect its impact on microwave-to-optics conversion in an integrated lithium nio...