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 9 of 9 for “"Frequency Multipliers"”.
-
The design and realization of higher order varactor frequency multipliers.
Massachusetts Institute of Technology. Dept. of Electrical Engineering. Thesis. 1967. M.S.
-
Millimeter-Wave and Sub-Terahertz Parametric Harmonic Generation
… The maximum conversion efficiency of reactive frequency multipliers is 1/N. The related P-V curves are described by the Chebyshev polynomials. Impulse representation of pumped parameters is also developed to represent a transient train of pulses to describe the resistive multipliers. Several …
-
Graphene for radio frequency electronics and infrared thermal imaging
… applications in graphene circuits, i.e. mixers, frequency multipliers and phase key shifters. The performance of current graphene circuits has been limited to below 1.5 GHz due to issues with contact resistances and materials quality. Through improved processing techniques and studies about …
-
Two-dimensional materials for electronic applications
… of the first graphene-based devices for high frequency applications; (2) Development of compact physical models for graphene transistors; and (3) Understanding the carrier transit delays in graphene transistors. In addition, this thesis proposes and experimentally demonstrates a completely new …
-
Low-noise frequency synthesis and picosecond timing for satellite laser ranging systems
… precision. Different types of oscillators and frequency multipliers have been developed (RF and microwave) in order to provide a synchronous and low phase noise clock signal to the SLR timing system, which is phase-locked to the Universal Time Clock (UTC). A technique to quantify phase noise in …
-
Frequency Locking Techniques Based on Envelope Detection for Injection-Locked Signal Sources
Signal generation at high frequency has become increasingly important in numerous wireline and wireless applications. In many gigahertz and millimeter-wave frequency ranges, conventional frequency generation techniques have encountered several design challenges in terms of frequency tuning range, …
-
Novel radio frequency applications and automated characterisation of silicon quantum dots
… unit. In this thesis, we focus on novel radio frequency (RF) implementations of silicon quantum dots as charge sensors and frequency multipliers. A major concern with large arrays of silicon QDs is the requirement of complex tuning protocols due to device inhomogeneity, which is currently done …
-
DESIGN OF DYNAMIC CAPACITIVE WIRELESS POWER TRANSFER SYSTEMS FOR ELECTRIC VEHICLE CHARGING
… in fringing fields. State-of-the-art high-frequency capacitive wireless power transfer (WPT) systems are limited in their power transfer capability due to the limited power rating of the semiconductor devices used in their inverters. This thesis presents several passive power-combining …
-
Design, optimization and analysis techniques of non-linear devices based on graphene or highly ordered pyrolytic graphite for terahertz system applications
… harmonic content. These devices are based on frequency multiplication and frequency mixing on mono- and multi-layer graphene films which are used for the generation and/or detection of submillimeter wave/ low THz band signals. The desired frequency multiplication and mixing performance of the …