Topic
Inductor
About: Inductor is a research topic. Over the lifetime, 52565 publications have been published within this topic receiving 484068 citations. The topic is also known as: passive two terminal.
Papers published on a yearly basis
Papers
More filters
Patent•
15 Apr 2005TL;DR: In this article, a low noise amplifier (LNA) with output matching that can be tuned by an adjustable inductor together with a tunable capacitor bank is presented, which operates over multiple frequency bands while occupying less silicon area than known LNA implementations.
Abstract: A low noise amplifier (LNA) (400) operates over multiple frequency bands while occupying less silicon area than known LNA implementations. The LNA includes output matching that can be tuned by an adjustable inductor together with a tunable capacitor bank. Output matching is accomplished by an adjustable inductor (402) together with a tunable capacitor bank (404).
112 citations
TL;DR: In this article, a 5-kW single-phase bidirectional inverter with wide inductance variation was designed and implemented to fulfill grid connection and rectification with power factor correction to regulate the dc bus to a certain range of voltages.
Abstract: This paper presents design and implementation of a 5-kW single-phase bidirectional inverter with wide inductance variation. For dc-microgrid applications, the bidirectional inverter has to fulfill grid connection and rectification with power factor correction to regulate the dc bus to a certain range of voltages. In the inverter operation, inductor current can vary from 0 to 32 A in one line cycle. This will result in wide inductance variation, around seven times for an inductor constructed with a molybdenum permalloy powder core, and thus, high current ripple and fluctuation. In this paper, we take into account this variation while designing controller and selecting key components to ensure inverter normal operation. Additionally, to adopt a cost-effective microcontroller for the inverter, the sensitivities of the control to various parameters are investigated and presented in this paper. Experimental results measured from a 5-kW single-phase prototype have verified the feasibility of the designed inverter.
112 citations
TL;DR: In this paper, the authors proposed new grounded inductance simulators employing only one voltage differencing current conveyor (VDCC) and two passive components, which can be tuned electronically by changing the biasing current of the VDCC.
Abstract: Actively simulated grounded inductors have been used in several applications ranging from filter to oscillator design as well as cancellation of parasitic inductances. In this paper, new grounded inductance simulators employing only one voltage differencing current conveyor (VDCC) and two passive components are proposed. Two new topologies for realizing positive and negative lossless inductances and four different topologies for realizing lossy inductances are proposed. The aim of this paper is to present new inductance simulators using the minimum number of active and passive components. The proposed inductance simulators can be tuned electronically by changing the biasing current of the VDCC. Moreover, the circuits do not require any conditions of component matching. Finally, using one of the proposed inductance simulators a third-order high-pass filter is constructed. The performance of the proposed filter is verified and simulated by using SPICE.
112 citations
Journal Article•
TL;DR: In this paper, a modified geometry of a solenoid type inductor using a surface micromachining technique is proposed, which has an air core for high frequency operation and an electroplated copper coil to reduce the series resistance.
Abstract: As operation frequencies and performance requirements of wireless devices increase, the resultant demands on the performance of passive components also increase. Miniaturization of inductive components for high frequency has been a key research area to address this issue; however, in general, miniaturized integrated inductors can suffer from low Q factors and/or self-resonant frequencies when compared to their discrete counterparts. The most popular geometries for integrated inductors have been meander types or spiral types, whereas most macro scale inductors are solenoid types. In this research, a modified geometry of a solenoid type inductor using a surface micromachining technique is proposed. This inductor has an air core for high frequency operation and an electroplated copper coil to reduce the series resistance. An important feature of the proposed inductor geometry is the introduction of an air gap between the substrate and the conductor coil in order to reduce the effects of the substrate dielectric constant. This air gap can be realized using a polyimide sacrificial layer and a surface micromachining technique. Therefore, the resulting inductor can have less substrate-dependent magnetic properties, less stray capacitance, and higher Q-factor. A preliminary measurement result shows that this inductor has high Q-factor and stable inductance over a wide range of operating frequency.
112 citations
01 Jan 1997
TL;DR: In this article, average current mode control is used to control currents other than inductor current, allowing a much broader range of topological application, including other topological topologies.
Abstract: Current mode control as usually implemented in switching power supplies actually senses and controls peak inductor current. This gives rise to many serious problems, including poor noise immunity, a need for slope compensation, and peak-to-average current errors which the inherently low current loop gain cannot correct. Average current mode control eliminates these problems and may be used effectively to control currents other than inductor current, allowing a much broader range of topological application.
111 citations