Filter design takes one of two approaches: passive or active. Passive designs combine resistors, capacitors and inductors to perform specific frequency filtering in applications where precision is less important than mass producibility. For very high frequency applications, a passive approach is quite often the only way to go. Active filters combine op amps and discrete transistors, primarily w...

A novel energy-efficient switching method for variable resolution successive approximation register (SAR) analogue-to-digital converters (ADCs) is presented. The proposed switching scheme achieves switching energy inspired by the early reset merged capacitor switching algorithm (EMCS) and monotonic capacitor switching procedure. Besides, the dummy capacitors are used to further reduce power con...

We present the design and analysis of a MEMS variable capacitor coupled to thermal actuators. The variable capacitor is composed by two main components: 1) the capacitor built by two squared plates, which one plate is mechanically fixed to the substrate and the other is a moving plate having mechanical suspensions (springs) connected from each corner of it to the substrate, and 2) a set of ther...

We present the design and analysis of a MEMS variable capacitor coupled to thermal actuators. The variable capacitor is composed by two main components: 1) the capacitor built by two squared plates, which one plate is mechanically fixed to the substrate and the other is a moving plate having mechanical suspensions (springs) connected from each corner of it to the substrate, and 2) a set of ther...

The optimal reactive-power compensation problem solving consists of finding the optimal combinations of the capacitors and their locations in a network in a way that technical requirements are satisfied and maximum economical effects are achieved. An approach to the optimal reactive-power compensation in distribution networks based on simulated annealing method and deterministic initialization ...

In the most recent heuristic methods, the high potential buses for capacitor placement are initially identified and ranked using loss sensitivity factors (LSFs) or power loss index (PLI). These factors or indices help to reduce the search space of the optimization procedure, but they may not always indicate the appropriate placement of capacitors. This paper proposes an efficient approach for t...

Diversity antenna loaded with the reactance control circuits configured with variable capacitors was proposed. Advantages of this proposed configuration are that signals are detected only by one receiver and that the hardware architecture is simple. However, effective combining has not been achieved due to a mismatch between the combiner and the receiver. In order to improve this problem, we co...

In this paper, a new step-up/down DC–DC converter based on switched capacitors (SCs) is proposed. This can provide highly variable voltage gain and merits like decreased stress power switches capacitors. Besides, due to its modular configuration obtained by utilizing switched-capacitor cells, it generate high in low-duty cycles. addition, the proposed has continuous input current. The theoretic...