Sökning: "digital förstärkare"

Visar resultat 1 - 5 av 13 uppsatser innehållade orden digital förstärkare.

  1. 1. Joint CFR and DPD optimization for 5G Digital Front Ends

    Master-uppsats, Lunds universitet/Matematik LTH

    Författare :Gustav Olsson; [2023]
    Nyckelord :Crest Factor Reduction; Digital Pre-Distortion; Power Amplifier; Parameter Optimization; 5G; Base Station; Memory Polynomial; Technology and Engineering;

    Sammanfattning : This thesis project investigates the topic of joint optimization for crest factor reduction and digital predistortion blocks, which are used for digital correction of analogue impairments in digital radio front ends. The work first investigates the effects of joint parameter variation of the above blocks on the global performance and computational cost of the digital chain, given reference CFR and DPD algorithms. LÄS MER

  3. 2. Design of auxiliary communication for audio between computers and DSPs : Programming and optimization of computational resources

    Uppsats för yrkesexamina på grundnivå, Umeå universitet/Institutionen för tillämpad fysik och elektronik

    Författare :Eriksson Janze Oscar; [2023]
    Nyckelord :DSP; Audio-communication; Auxiliary; AUX; phone connector; USB-audio; STM32; ADC; AD-converter; filterbank; hearing aid; signalprocessor; ljudkommunikation; ljudkabel; AUX; USB-ljud; STM32; hjälpmedel; ADC; analog-till-digital-omvandlare;

    Sammanfattning : This thesis report is about designing a prototype and establishing audio communication between a computer and Digital Signal Processor (DSP) using two preamp circuits using both auxiliary and USB connection. The paper gives the reader an overview on how audio is transmitted from a computer, through the system and to the desired output. LÄS MER

  4. 3. Current-Mode Class D Power Amplifier for 2.4GHz Wi-Fi

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Yann Jean Michael Pirot; [2023]
    Nyckelord :Power Amplifier; Wifi; Digital Power Amplfier; Class D; RFIC; Analogue; Effektförstärkare; Wifi; digital förstärkare; klass D; analog;

    Sammanfattning : Modern wireless communication techniques employed in the Wi-Fi® protocol, such as orthogonal frequency-division multiplexing exhibit analogue signals with high peak-to-average power ratio. Therefore, power amplifiers for Wi-Fi suffer from low efficiency when operating in back-off mode, away from their maximum efficiency at peak power. LÄS MER

  5. 4. Wave Propagation Experiment on FPGA with Miniaturized Payload for Sounding Rocket Application

    Kandidat-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Leonardo Filippeschi; [2022]
    Nyckelord :Wave propagation experiment; REXUS BEXUS; FPGA; IQ demodulation; ADC; VHDL;

    Sammanfattning : This bachelor's thesis aims to implement a wave propagation experiment on Field-Programmable Gate Array to detect the signal strength at pre-defined frequencies for use in sounding rocket experiments. This includes the choice of suitable components such as analog to digital converters, filters, voltage regulators, and amplifiers. LÄS MER

  7. 5. Digital Microwave Control of Superconducting Qubits

    Master-uppsats, KTH/Tillämpad fysik

    Författare :Giuseppe Ruggero Di Carlo; [2022]
    Nyckelord :Superconducting qubit; High-fidelity readout; Real-time reset; iSwap gate; FPGA; RFSoC; template matching.; Supraledande kvantbit; Avläsning med hög tillförlitlighet; realtidsåterställning; iSwap-grind; FPGA; RFSoC; mallmatchning.;

    Sammanfattning : We manipulate two superconducting qubits using digital microwave electronics. Starting fromtheir characterization, we develop a real-time reset scheme and implement the iSwap gate. Thequbits’ parameters are obtained using standard single-qubit characterization techniques, such asRabi and Ramsey oscillations and frequency sweep of the resonators. LÄS MER