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Now showing items 261-270 of 278
Analytical Modeling of SiGe HBT Intermodulation Linearity
(2016-05-05)
Linearity is a key concern in RF systems, particularly an amplifier. Volterra series allow us to easily identify the contribution of various individual nonlinearities, as well as to identify the interaction between individual ...
Laser beam shaping and transformation using freeform surface design
(2014-05-02)
Lasers are used in many areas including material processing (lithography, semiconductor manufacturing), welding, cutting, drilling, medical procedures (eye surgery and cosmetic skin treatments), and optical data processing. ...
Ag Sintering Die and Passive Components Attach for High Temperature Applications
(2016-05-09)
With an increasing demand for SiC and GaN high power devices and high temperature electronics operating in extreme environments, traditional solder materials are reaching their limitations in performance. Compatible, high ...
A 2.45 GHz Frequency-Selective Rectenna for Wireless Energy Harvesting
(2016-05-16)
As the emphasis placed on renewable energies has grown over recent years, a necessity for
innovative methods of providing alternative energy sources has emerged. With most modern
communication systems utilizing radio ...
Alternative Timing in Digital Logic
(2015-12-14)
For many decades using a system clock has been the go-to method of timing circuits. CPUs in particular have been at least partially defined by the speed of their clock. As technology moves forward, this is proving more and ...
Low Phase Noise Voltage-Controlled Oscillators for Wide-Band Frequency Synthesis
(2013-11-11)
Noise-bandwidth trade-off is a challenge issue in modern voltage-controlled oscillator (VCO) designs. Wide-tuning VCOs usually suffer degraded phase noise. A mixer based tuning range enhancement technology is proposed in ...
Resource Allocation and Performance Optimization in Wireless Networks
(2014-03-31)
In the past few years, demand has kept increasing for higher data rates in wireless networks due to the increases in the numbers of mobile subscribers and multimedia applications. Femtocell and free space optics(FSO) ...
Robot Navigation for RFID-based Inventory Counting
(2016-05-06)
A mathematical model for a robot navigation system searching for RFID tags in a retail store is constructed. It is based on the Traveling Salesman Problem optimization algorithm. A software simulation is performed in MATLAB. ...
Small Signal Equivalent Circuit Extraction and RF Noise Analysis in 28nm High-k/ Metal Gate RF CMOS
(2015-12-10)
This work extracts RF noise in a 28nm high-k/metal gate RF CMOS technology using
a small signal equivalent circuit. All extrinsic and intrinsic small-signal parameters are
extracted from measured data as well as scaling ...
Characterization and Modeling of 28nm RF MOSFETs and SiGe HBTs
(2015-12-10)
Both the second and third order intermodulation linearities (IP3 and IP2) are characterized on 28nm RF MOSFETs. The impacts of biasing, device size, frequency, and gate length on IP3 are discussed. With both DC and RF ...