Essays about: "100 MHz"

Showing result 11 - 15 of 39 essays containing the words 100 MHz.

  1. 11. Evaluation of KPIs and Battery Usage of Li-ion BESS for FCR Application

    University essay from Uppsala universitet/Elektricitetslära

    Author : Samuel Jansson; [2019]
    Keywords : Evaluation; Key performance indicator; battery energy storage system; frequency regulation; frequency containment reserve; lithium-ion; energy efficieny; response time; performance;

    Abstract : The main purpose of this thesis was to develop and evaluate Key Performance Indicators (KPIs) and battery usage associated with Lithium-ion Battery Energy Storage Systems (LiBESS) used as Frequency Containment Reserve (FCR). The investigation was based on three of Vattenfall´s LiBESS projects that use the same lithium-ion battery technology but vary in system rating and configuration. READ MORE

  3. 12. All-Digital Aggregator for Multi-Standard Video Distribution

    University essay from Linköpings universitet/Kommunikationssystem

    Author : Andreas Norén; [2018]
    Keywords : Flexible Aggregator; Multi-Standard; Oversampled Complex Modulated Filter Banks; Inner Channelizers; Computational Complexity; Symmetric Linear-Phase FIR Filters;

    Abstract : In video transmission there is a need to compose a wide-band signal from a numberof narrow-band sub-signals. A flexible solution offers the possibility to place any narrow-band sub-signal anywhere in the wide-band signal, making better use of the frequency space of the wide-band signal. READ MORE

  4. 13. 1kW Class-E solid state power amplifier for cyclotron RF-source

    University essay from Uppsala universitet/FREIA

    Author : Stefan Book; [2018]
    Keywords : Class-E; LDMOS; high efficiency; high power; VHF; power amplifier; accelerator; cyclotron;

    Abstract : This thesis discusses the design, construction and testing of a highefficiency, 100 MHz, 1 kW, Class-E solid state power amplifier. The design was performed with the aid of computer simulations using electronic design software (ADS). The amplifier was constructed around Ampleon's BLF188XR LDMOS transistor in a single ended design. READ MORE

  5. 14. Digitally Controlled Oscillator for mm-Wave Frequencies

    University essay from Lunds universitet/Institutionen för elektro- och informationsteknik

    Author : Rikard Gannedahl; Johan Holmstedt; [2018]
    Keywords : RF; RFIC; oscillator; DCO; mm-wave; Technology and Engineering;

    Abstract : In the fifth generation of mobile communication, 5G, frequencies above 30 GHz, so-called millimeter-wave (mm-wave) frequencies are expected to play a prominent role. For the synthesis of these frequencies, the all-digital phase locked loop (ADPLL) has recently gained much attention. READ MORE

  6. 15. A Differential Measurement Probe with High Common Mode Rejection

    University essay from Lunds universitet/Industriell elektroteknik och automation

    Author : Björn Franzén; [2018]
    Keywords : Common mode rejection; Fiber-optic measurement probe; Current Sensing; High voltage measurements; Optical isolation; Technology and Engineering;

    Abstract : Measuring signals with high frequency common mode components are typically prone to measurement errors due to low common mode rejection at high frequencies. The purpose of this master thesis is to design a measurement probe that presents sufficient common mode rejection to measure current on high voltage motor drives directly at the switching stage, before filtering. READ MORE