Sökning: "RFIC"
Visar resultat 1 - 5 av 8 uppsatser innehållade ordet RFIC.
1. Current-Mode Class D Power Amplifier for 2.4GHz Wi-Fi
Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)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
2. Antenna Design and Link Performance Verification of Antennas for 5G mmWave Handheld Devices
Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknikSammanfattning : The purpose of the thesis is to design a new antenna system and to verify its link performance in 5G FR2 mmWave frequency for handheld devices to enable cellular communication. The main objective is to design an antenna primarily at 28GHz and 39GHz to enhance spectrum efficiency, along with improved transmission data rates, enabling new cases like Augmented Reality (AR), Virtual Reality (VR) and many more such applications. LÄS MER
3. A Quadrature Frequency Generation Chain for Direct-conversion Phased-array 5G Transceivers
Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknikSammanfattning : The 5th generation (5G) has recently specified a new spectrum range, FR2- 5G New Radio (5G-NR), to provide higher spectral efficiency and channel capacity for ubiquitous cellular connectivity where the user ends can be in various types such as picocell stations, sensor nodes, cloud servers, hand-held devices, and so on. Due to the advantage of phased array antennas in performing beam-forming, and improving SNR at higher spectra, multi-antenna systems have gained an inevitable role in developing such radios. LÄS MER
4. PLL for 5G mmWave
Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknikSammanfattning : This paper presents research and implementation of a high frequency Integer-N phase-locked loop for digital beamforming in mobile devices. Multiple topologies investigated whereof two were implemented. The transient phase noise of the PLL is -104dB/-95dB @1MHz. The output frequency range is from 8G-10G. LÄS MER
5. Digitally Controlled Oscillator for mm-Wave Frequencies
Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknikSammanfattning : 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. LÄS MER