Topic
RLC circuit
About: RLC circuit is a research topic. Over the lifetime, 14490 publications have been published within this topic receiving 142697 citations.
Papers published on a yearly basis
Papers
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TL;DR: In this article, a monolithic-microwave integrated-circuit (MMIC) active phase shifter using a variable resonant circuit with a large amount of variable phase is presented.
Abstract: This paper describes a monolithic-microwave integrated-circuit (MMIC) active phase shifter using a variable resonant circuit with a large amount of variable phase. We first propose a novel active phase-shifter configuration that uses a variable resonant circuit with second-order all-pass network characteristics. Phase can be changed with a constant amplitude by varying the capacitance or the inductance of the resonant circuit. Next, an experimental MMIC active phase shifter with input active matching is presented. A phase shift of over 100/spl deg/ and an insertion loss of 4/spl plusmn/1 dB are obtained from 2.2 to 2.8 GHz. The chip size is less than 1.0 mm/sup 2/. Finally, an experimental 360/spl deg/ MMIC active phase shifter is presented. Over the bandwidth of 40 MHz at 2.44 GHz, the insertion gain is 2.0/spl plusmn/0.7 dB and the phase error is within /spl plusmn/4/spl deg/ when measured in 30/spl deg/ steps.
43 citations
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TL;DR: It will be shown that PH systems precisely dualize the BM equations, leading to possible advantages at the level of controller design, and the introduced duality allows to pull back PH designs to the space of currents and voltages.
43 citations
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03 Aug 1989TL;DR: In this paper, a neutral forming circuit includes first and second impedances coupled together at a junction to form a series combination which is coupled across a pair of DC link conductors coupled to an inverter input and a third impedance coupled between the junction and a neutral terminal at which the neutral voltage is formed.
Abstract: Prior neutral forming circuits for use in developing a neutral voltage for loads coupled to an inverter have been unduly large and heavy or have required that the inverter be operated by a half bridge control which causes less easily filtered harmonics to be produced in the inverter output. In order to overcome these problems, a neutral forming circuit includes first and second impedances coupled together at a junction to form a series combination which is coupled across a pair of DC link conductors coupled to an inverter input and a third impedance coupled between the junction and a neutral terminal at which the neutral voltage is formed, the first through third impedances forming a resonant circuit having a resonant frequency substantially equal to the output frequency of the inverter.
43 citations
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03 Mar 2010
TL;DR: In this article, an improved implantable pulse generator (IPG) containing improved telemetry circuitry is disclosed, which includes a telemetry coil within the conductive IPG case, not in the nonconductive header as is typical.
Abstract: An improved implantable pulse generator (IPG) containing improved telemetry circuitry is disclosed. The IPG includes a telemetry coil within the conductive IPG case, not in the non-conductive header as is typical, which simplifies IPG design. The improved resonant circuit of which the coil is a part does not include a discrete tuning resistor with the coil, which tuning resistor was traditionally used to increase communication bandwidth of the coil to render it suitable for FSK telemetry. In lieu of the tuning resistor, the coil is intentionally inductively coupled to the case by positioning the coil a certain distance away from the case. Such coupling decreases the effective inductance and increases the effective series resistance in the improved resonant circuit, both of which increase the communication bandwidth. As such, suitable FSK telemetry can be achieved, even though the improved resonant circuit without the case would not on its own have suitable bandwidth.
43 citations
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03 Oct 2001
TL;DR: In this article, a high temperature superconducting capacitor is coupled to an inductor to form a resonant circuit, which is then used to make a low-resistance cross-over for the inductor coil.
Abstract: Control elements for RF antennas including high temperature superconducting capacitors, alone or in combination with other elements, including high temperature superconducting films, structures, and applications are formed In one embodiment a high temperature superconducting capacitor is coupled to an inductor to form a resonant circuit In another embodiment a high temperature superconducting capacitor is used to make a low-resistance cross-over for an inductor coil Additional circuits include circuits which do not use non-superconducting materials in the circuit, circuits which have coupled superconducting inductors to provide low-loss signal coupling, tuning and bandwidth broadening, and circuits which include switches to shut off the superconductivity of a superconducting element including low-loss photoconducting and superconducting thermal switches These circuits may be used to improve Magnetic Resonance Imaging (MRI)
43 citations