Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 39 for “"60 GHz"”.
-
A 60 Ghz Mmic 4x Subharmonic Mixer
… resonance occurs in the atmosphere (~58-62 GHz) has received recent attention as a possible candidate for secure high-speed wireless data networks with a potentially high degree of frequency reuse. A significant challenge in implementing data networks at 60 GHz is the manufacture of low-cost …
-
Array Processing for Mobile Wireless Communication in the 60 GHz Band
… available a large block of spectrum known as the 60 GHz band. The 60 GHz band is attractive because it provides the opportunity of multi-Gbps data rates with unlicensed commercial use. One of the main challenges facing the use of this band is poor propagation characteristics including high path …
-
Radar-based in-cabin sensing using 60 GHz stepped-frequency continuous-wave radar
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-08-01
-
30 GHz Switchable Waveguide Antenna: Prototype Antenna Solution for 60 GHz Wi-Fi Protocol 802.11 ad
… of this thesis was to design an antenna for 60 GHz Wi-Fi protocol 802.11 ad. Due to high loss at this frequency, highly directional, narrow beam antennas are required. Therefore, for WLAN applications where hemispherical coverage is required, a multi-antenna-element solution is required. In …
-
Analysis of Atmospheric Effects Due to Atmospheric Oxygen on a Wideband Digital Signal in the 60 Ghz Band
… that utilize higher frequencies, especially the 60 GHz band. This band is plagued with high atmospheric absorption due to atmospheric oxygen, but has a lot of bandwidth, which makes it desirable for multi-media applications. Recently, research of wideband digital links within the 60 GHz band …
-
Wideband Terrestrial Path Loss Measurement Results For Characterization of Pico-cell Radio Links at 38 GHz and 60 GHz Bands of Frequencies
… to predict the behavior of mm-waves (28, 38 and 60GHz) during different weather conditions, especially rain. This research attempts to characterize the performance of pico-cell scenario broadband wireless channels by measuring path loss statistics during different weather conditions. Hardware and …
-
Design and Implementation of an Ultrabroadband Millimeter-Wavelength Vector Sliding Correlator Channel Sounder and In-Building Multipath Measurements at 2.5 & 60 GHz
Over the past decade, the market for wireless service has grown at an unprecedented rate. The industry has grown from cellular phones and pagers to broadband and ultra-broadband (also called ultra-wideband) wireless services that can provide voice, data, and full-motion video in real time. This …
-
Design and analysis of ultra-wide band and millimeter-wave antennas
Ultra-wideband (UWB) antennas and 60-GHz millimeter-wave antennas and arrays are analyzed and designed in this thesis for developing high-speed short-range wireless communications. Firstly, a probe-fed crossed circle-disk monopole UWB antenna with stable omnidirectional radiation pattern was …
-
High speed 802.11ad wireless video streaming
… Gigabit Alliance known as WiGig operating in the 60 GHz band to handle rise in data traffic ubiquitous to high speed data transmission such as bulk data transfer, and wireless video streaming. According to Cisco and others, it is estimated that in 2020, internet video traffic will account for 82 % …
-
Radio over fibre distribution systems for ultra-wide band and millimetre wave applications
… technology such as ultra-wideband (UWB) and 60 GHz millimetre wave (mm-wave) play a key role for wireless connectivity in indoor home, office environment or large enclosed public areas. UWB has been allocated at the frequency band 3.1-10.6 GHz with an emission power below -41.3 dBm. Mm-wave …
-
Design of mobile radio communication system at millimetre-waves and BER measurements for indoor environments
… of the widely available spectrum surrounding the 60 GHz operating frequency, which can support high speed indoor WLANs. The need to estimate the system performance in indoor mobile channels is necessary for future system design and applications.<br/><br/>The studies reported in this thesis are …
-
Performance limits of RF power CMOS
… and high data rate personal area networks at 60 GHz, automotive collision avoidance radar at 77 GHz and millimeter-wave imaging at 94 GHz. Most of these applications are cost sensitive and require high levels of integration to reduce system size. The tremendous improvement in the frequency …
-
Time series analysis of indoor millimetre wave distributed antenna systems
… mmWave measurement system operating at 60 GHz is designed in order to take the snapshots of the signal received simultaneously at multiple candidate access point locations. This experimental mmWave DAS setup enables the time series data to be collected and analysed in this …
-
Efficiency enhancement techniques for RF and millimeter wave power amplifiers
… tuned CMOS power amplifier (PA) operating in the 60 GHz band was designed. Design, layout, and parasitic modeling considerations to attain high-efficiency millimeter-wave PA operation are discussed. Both single-ended and differential versions of the single-stage PA were implemented in a 32 nm SOI …
-
Investigation of Indoor Propagation Algorithms for Localization Purposes: Simulation and Measurements of Indoor Propagation Algorithms for Localization Applications using Wall Correction Factors, Local Mean Power Estimation and Ray Tracing Validations
… path loss model and introducing a case study on 60 GHz propagation in indoor environments using ray tracing and measurements. A summary of propagation mechanisms and manifestations in the indoor environment is presented. This comprises the indoor localization techniques using channel parameters …
-
A Novel Variable Inductor-Based VCO Design with 17% Frequency Tuning Range for IEEE 802.11AD Applications
… systems are required to cover a broad 8 GHz TR centered on 60 GHz. This wide TR at V band imposes significant challenge to the VCO design in radio transceivers, and makes the TR of the integrated VCO a major bottleneck to the successful commercialization of many IEEE 802.11ad compliant …
-
Design and verification of SC-FDE/OFDM communication schemes for millimetre-wave wireless system using FPGA technologies
… personal area networks (WPANs) in the 60 GHz frequency band. Single-carrier and multicarrier transmission techniques are considered in the implementation of a 64.8 GHz WPAN capable of achieving a reliable indoor link. Thus, single-carrier with frequency domain equalization (SC-FDE) and …
-
1-Gs/s, 14-Bit Digital -to -Analog Converter and Track -and -Hold Amplifier
… of 5. The THA circuit was also designed using a 60-GHz fT InGaP/GaAs HBT technology. Simulation results are 83-dB SFDR at 100-MHz sampling frequency, 65-dB SFDR at 1-GHz sampling frequency, and 60-dB SFDR at 2-GHz sampling frequency under all Nyquist conditions.
-
Adaptive and Robust Multi-Gigabit Techniques Based MmWave Massive MU-MIMO Beamforming For 5G Wireless and Mobile Communications Systems. A Road Map for Simple and Robust Beamforming Scheme and Algorithms Based Wideband MmWave Massive MU-MIMO for 5G Wireless and Mobile Communications Systems
… of the four 5G candidate mmWave frequencies, 28 GHz, 39 GHz, 60 GHz, and 73 GHz, are investigated for indoor/outdoor propagation scenarios, including path loss models and multipath delay spread values. Results are compared to confirm that the received power and delay spread is decreased with …
Page 1 of 2