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.
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Showing 1 to 20 of 828 for “"linearity"”.
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Linearity of some modulation circuits.
… modulator circuit is proposed to improve the linearity of such processes. Developed forms are tested with sinusoidal carrier drive. It is shown that the mismatched demodulator will eliminate distortion due to diagonal clipping. By Fourier analysis it is shown that chopped sine wave modulators, …
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High linearity broad-band helix TWTs
… linear performance. Since the conditions of high linearity and efficiency could not be achieved simultaneously, the best trade-off was attained. The performance across the frequency band of 10.7 to 12.75GHz was computed for the uniform and tapered helix designs. With the use of a simulated …
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Linearity of power AlGaAs/GaAs HBTs
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1998.
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Large signal linearity of scaled MOS transistors
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1987.
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Linearity improvement technique for CMOS continuous-time filters
A linearity improvement technique using a combination of passive resistors and current-steering MOS transistors as a variable resistance element is applied in the implementation of low-distortion continuous-time filters in complementary metal-oxide-semiconductor (CMOS) technology. This work is …
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RF power amplifier linearity compensation for MRI systems
In this thesis, a polar-feedback linearization system for use with MRI RF power amplifiers was designed and simulated. The design here presented is intended to replace Analogic's (located in Peabody, Massachusetts) feed-forward, digital linearization scheme. This involved the selection and testing …
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Cooperative Optical Non-linearity in a blockaded Rydberg Ensemble
… describes the observation of a novel optical non-linearity mediated by the dipole-dipole interactions in a cold gas of Rydberg atoms. Electromagnetically induced transparency (EIT) is used to map the strong dipolar interactions onto an optical transition, resulting in a cooperative effect where …
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A linearity compensator for the Pam-Fm telemetering system
Thesis (M.S.) Massachusetts Institute of Technology. Dept. of Electrical Engineering, 1950.
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Investigation of high linearity DFB lasers for analog communications
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science; and, Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Physics, 1998.
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Linearity Enhancement of High Power GaN HEMT Amplifier Circuits
… very high power levels but suffers from high non-linearity. With the advent of 5G technologies, high linearity is in greater demand due to complex modulation schemes and crowded RF (Radio Frequency) spectrum. Because of the non-linearity issue, GaN power amplifiers have to be operated at back-off …
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Linearity of the Climate System Response to Antarctic Topography Change
… circulation models is used to investigate the linearity of the response of the global climate system to changes in Antarctic topography. Models range in complexity from an atmospheric dry dynamical core to a slab-ocean global climate model with idealized West Antarctic ice sheet topography …
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A Reconfigurable Digital-to-Analog Converter with Supply Invariant Linearity
… converter (DAC) with supply independent linearity is presented. The process agnostic converter achieves wide supply range operation and re-configurability by being charge based. This converter consists of a 7-bit parallel digital input control core and an analog "summing" core utilizing …
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An integrated circuit pressure sensing system with adaptive linearity calibration
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1997.
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Counterpoint and linearity as manifested in the music of George Gershwin
… is counterpoint and an ever-present sense of linearity, duality, and opposition. Harmonic sequences are often not generated by conventional, pre-determined progressions, but rather by the linear motion of each individual note, as though it were its own independent voice. Instead of setting …
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Model reference adaptive control systems using a dead zone non-linearity
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1985.
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Investigation of Microwave Transducer for Linearity Dependence and Applications in Quantum Networking
… yet most do not have the high-speed and high-linearity performance or the ability to handle ultracold temperatures. To address these low-temperature and high-frequency problems, an RF photonic microwave transducer is used to measure the frequency response and investigate the linearity …
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Multigate MOSFETs for digital performance and high linearity, and their fabrication techniques
… (WNW= 9 nm) show excellent transconductance (gm) linearity at biases (300 mV), characterized by the high third intercept point (2.6 dBm). The high linearity is especially important for low power applications because it is insensitive to bias conditions.
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Multiple access networks over finite fields : optimality of separation, randomness and linearity
We consider a time-slotted multiple access noisy as well as noise-free channel in which the received, transmit and noise alphabets belong to a finite field. We show that source-channel separation holds when the additive noise is independent of inputs. However, for input-dependent noise, separation …
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Effect of mobile phase additives on linearity in particle beam lc/ms
… evidence has been reported of response nonlinearity at low concentrations. Addition of a mobile phase additive to the HPLC mobile phase improves the linearity via a so-called "carrier effect.” A study has been done to characterize the physical and chemical phenomena involved in this carrier …
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