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Showing 1 to 20 of 230 for “"Wide band"”.
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Wide band noise in MOSFETs
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1993.
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Sub-optimal Ultra-wide Band Receivers
Ultra-wide Band (UWB) has sparked a lot of interest lately from the industry and academia. The growing capacity of the wireless industry is requires a new communication system that satisfies the high data rate which does not interfere with existing RF systems. UWB promises to be this new …
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Wide band TX Leakage Cancellation for FDD Transceivers
Frequency division duplex (FDD) is the most widely used full duplex technique for modern wireless communication systems. A device called a duplexer is needed in order to separate the transmitter (TX) and the receiver (RX) signals. To avoid RX being saturated and desensitized, the isolation between …
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Wide band-gap nanowires for light emitting diodes
Wide band-gap nanowires composed of GaN and ZnO are promising materials for unique designs and potential efficiency improvement of light emitting diodes (LEDs) for solid state lighting. The large surface-to-volume ratio of nanowires provides facile strain-relaxation such that nanowires can be grown …
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Investigation of new semiconductor materials for wide band-gap devices
… the compositional and optical properties of wide bandgap III-nitride and gallium oxide semiconductor materials using scanning electron microscopy techniques. The primarily used techniques used here were wavelength dispersive X-ray spectroscopy (WDX) and cathodoluminescence (CL) with other …
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Optically Controlled High Power High Speed Wide Band Gap Devices
… interest over the past few years in the areas of wide bandgap power electronics for high speed, high power and high efficiency switches which enable innovative approaches to compact pulse power system design and implementation. In the area of high speed pulse technology, optical techniques are …
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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 …
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Compact Digital Predistortion for Multi-band and Wide-band RF Transmitters
… are then introduced. Finally, the observation bandwidth of DPD systems can be extended by the proposed multi-rate track-and-hold circuits with the associated algorithm. By addressing several parameters of ADC and corresponding DPD algorithm, multi-GHz observation bandwidth using only a 61.44MHz …
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Wide-Band Amplifiers of High Gain - Bandwidth Product and Improved Efficiency
Made available in DSpace on 2014-12-04T21:02:58Z (GMT). No. of bitstreams: 1 0023366.pdf: 7382573 bytes, checksum: 61db85984f49cc77312c50764cb78f01 (MD5) Previous issue date: 1957
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High-speed data conversion for digital ultra-wide-band radio receivers
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2003.
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Message routing in level 1 of the wide-band all-optical network
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1995.
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Radio over fibre distribution systems for ultra-wide band and millimetre wave applications
Short range wireless 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 …
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Process Dependence of Defects and Dopants in Wide Band Gap Semiconductor and Oxides
<p>Wide band gap semiconductors and oxides have attracted much attention in the last decade because of their various applications to next generation opto- and micro-electronics. My research focuses on the process dependence of the defects and dopants in wide band gap semiconductors and oxides of …
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RF Feedforward Interference Cancellation For Wide-band Signals using Adjustable Band-stop Resonators
… RF feedforward cancellation systems for wideband interference signals appearing at close proximity from the receiver. The system is designed to target high interference risks in the Upper-700 MHz band (746-805 MHz) following the congestion in the spectrum between public safety land mobile …
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Characterization and Application of Wide-Band-Gap Devices for High Frequency Power Conversion
… of power conversion technology. The emerging wide-band-gap (WBG) material based power semiconductor devices are considered as gaming changing devices which can exceed the limit of silicon (Si) and be used to pursue groundbreaking high-frequency, high-efficiency, and high-power-density power …
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Design of microstrip ultra wide band antenna with two notch filters for wireless communication
… of the antenna for WiMAX and WLAN frequency band rejection. The antenna is simulated using the commercially available CST Microwave Studio software. The slots dimensions are systematically calculatedand optimized to achieve the desired band rejection responses. A multi-state reconfigurable …
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Seismic near field of an air gun measured by a wide band accelerometer system.
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Earth and Planetary Sciences, 1971.
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