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Wireless power supply

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  • The wired power transmission is usually adopted to supply power for the devices in the traditional buildings. With the development of intelligent buildings, the way of wired power supply would greatly increase the complexity and consumption of laying the lines. To improve the flexibility of power supply and reduce the cost of wiring, wireless power transfer technology has been used in smart buildings. However, it remains a fundamental challenge to create a simple wireless power transfer system in which power can be wirelessly transferred to multiple appliances.

    pdf8p dayhoctainha 10-09-2020 8 0   Download

  • (bq) part 2 book "teach yourself electricity and electronics" has contents: introduction to semiconductors, power supplies, the bipolar transistor, amplifiers and oscillators, wireless transmitters and receivers, integrated circuits, electron tubes, a computer and internet primer, personal and hobby wireless,...and other contents.

    pdf389p bautroibinhyen21 14-03-2017 61 10   Download

  • This paper presents high-efficiency high-gain 2.4 GHz power amplifiers (PAs) for wireless communications. Two class-B PAs are designed and verified in 0.13 µm CMOS mixed-signal/RF process provided by TSMC. The PAs employs cascode topologies with wideband multi-stage matchings. The singlestage cascode PA is designed for a high power added efficiency (PAE) of 35.4% while the gain is 20.4 dB over the -3 dBbandwidth between 2.4 GHz and 2.48 GHz. The two-stage cascode PA is targeted for a high gain of 37.7 dB while it exhibits a peak PAE of 24.1%. Supplied by 1.

    pdf7p truongtien_09 10-04-2018 36 2   Download

  • This paper presents high-efficiency high-gain 2.4 GHz power amplifiers (PAs) for wireless communications. Two class-B PAs are designed and verified in 0.13 µm CMOS mixed-signal/RF process provided by TSMC. The PAs employs cascode topologies with wideband multi-stage matchings. The singlestage cascode PA is designed for a high power added efficiency (PAE) of 35.4% while the gain is 20.4 dB over the -3 dBbandwidth between 2.4 GHz and 2.48 GHz. The two-stage cascode PA is targeted for a high gain of 37.7 dB while it exhibits a peak PAE of 24.1%. Supplied by 1.

    pdf8p truongtien_09 10-04-2018 27 2   Download

  • A video data sampling and transmission system is designed for video monitoring based on wireless mesh network. Discussion is made on the use of standards, working frequency, network infrastructure, coverage solutions, link budget, frequency planning, power supply, supporting transmission and AC design.

    pdf8p vivalletta2711 11-01-2020 8 0   Download

  • Introducing Bluetooth Applications notwithstanding, the added value from simply being wireless convinced consumers to try it and use it! However, for products that are inherently static, the added value may just be initial “desire” and not really a viable investment in both resources and dollars. Consider the static devices in our wired PAN (Figure 1.1)—for example, the ubiquitous mouse and keyboard. Both are dependant for their power supply requirements upon their host PC, so if made wireless, the subject of batteries becomes crucial....

    pdf10p thachsaudoi 23-12-2009 93 11   Download

  • The Digital Building Telecommunications Access Guideline Foreword Scope and Purpose Digital River The Process More information and comments Principle 1: Spatial Access and Design 1.1 Introduction 1.2 Communications Network Architectures 1.3 Telecommunications Service Entrance 1.4 Equipment Room 1.5 Backbone Pathways or Riser Shafts 1.6 Telecommunications closets (TC) 1.7 Horizontal pathways 1.8 Radio (Wireless) Facilities Provision 1.9 Standards & References Principle 2: Diversity 2.1 Building Entry Point (BEP) 2.2 Equipment Room 2.3 Riser Shafts 2.

    pdf56p qd-tek 28-04-2010 107 11   Download

  • Multinational telecommunications company CommScope estimates that by 2013 wired and wireless operators worldwide will be spending over $10 billion on the generation of power for their networks. It launched a fuel cell powered backup solution in 2008, with fuel cells supplied by Hydrogenics, and in 2011 the partnership was cemented by CommScope’s acquisition of Hydrogenics shares and joint collaboration on product development and commercialisation. Trials of the product were conducted in India, where CommScope says an estimated 1.

    pdf29p thamgiacongdong 02-05-2013 28 2   Download

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