lumped source
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Lumped element model — In general, the lumped component model is a way of simplifying the behaviour of spatially distributed systems into a topology consisting of discrete entities that approximate the behaviour of the distributed system under certain assumptions. It… … Wikipedia
Metamaterial antenna — This Z antenna tested at the National Institute of Standards and Technology is smaller than a standard antenna with comparable properties. Its high efficiency is derived from the Z element inside the square that acts as a metamaterial, greatly… … Wikipedia
Distributed element filter — Figure 1. A circuit featuring many of the f … Wikipedia
Photonic metamaterial — Electromagnetism Electricity · … Wikipedia
Mechanical filter — Figure 1. A mechanical filter made by the Kokusai Electric Company intended for selecting the narrow 2 kHz bandwidth signals in SSB radio receivers. It operates at 455 kHz, a common IF for these receivers, and is dimensioned 45×15×15 mm ( … Wikipedia
Electrical element — Electrical elements are conceptual abstractions representing idealized electrical components, such as resistors, capacitors, and inductors, used in the analysis of electrical networks. Any electrical network can be analysed as multiple,… … Wikipedia
ancient Rome — ▪ ancient state, Europe, Africa, and Asia Introduction the state centred on the city of Rome. This article discusses the period from the founding of the city and the regal period, which began in 753 BC, through the events leading to the… … Universalium
Roman Catholicism — the faith, practice, and system of government of the Roman Catholic Church. [1815 25] * * * Largest single Christian denomination in the world, with some one billion members, or about 18% of the world s population. The Roman Catholic church has… … Universalium
Smith chart — The Smith Chart, invented by Phillip H. Smith (1905 1987), [Smith, P. H.; Transmission Line Calculator; Electronics, Vol. 12, No. 1, pp 29 31, January 1939] [Smith, P. H.; An Improved Transmission Line Calculator; Electronics, Vol. 17, No. 1, p… … Wikipedia
Distributed amplifier — Distributed amplifiers are circuit designs that incorporate transmission line theory into traditional amplifier design to obtain a larger gain bandwidth product than is realizable by conventional circuits. N stage traveling wave amplifier … Wikipedia
Transmission line — This article is about the radio frequency transmission line. For the power transmission line, see electric power transmission. In communications and electronic engineering, a transmission line is a specialized cable designed to carry alternating… … Wikipedia
