A multioption (three) program in electrical engineering is proposed to meet the needs of a rapidly advancing technology and a wide range of student interests and objectives. A specific program is ...described which includes a wide range of technical electives outside of electrical engineering, and also features a novel treatment of advanced mathematics for electrical engineering students in both the systems and science areas. An integrated humanities-social sciences program is additionally described.
A new longitudinal mode of operation for the lanthanum-modified lead zirconate titanate (PLZT) ferroelectric electrooptic ceramics is described. Potential applications include displays and shutters.
Improvements in power, efficiency, and FM sensitivity are achieved experimentally with Impatt oscillators which are operated so that the second harmonic lies in the frequency range for classical Read ...operation. The improvement in performance is accomplished by providing a trapped resonance at the second harmonic, in addition to the required tuning at the output frequency.
The achievement of 2.7 watts of CW power at 13.8 GHz with 10.2 percent efficiency is reported for an abrupt-junction p-n silicon avalanche transit time oscillator. Good efficiency requires a high ...current density without excessive diode temperature. The use of diamond heat sinks and arrays of small area junctions are suggested.
Silicon avalanche diodes have been mounted on diamond to achieve a continuous power density more than twice that achieved on copper. A pair of parallel connected wafers oa a single sample of diamond ...produced 4.7 watts of CW power at 13.3 GHz using a room temperature heat sink.
In this letter it is pointed out that a substantial improvement in the effective quantum efficiency of ordinary photodetectors can be obtained by simply tilting the detector surface to Brewster's ...angle. The technique is best applied to laser heterodyne systems in which the light is linearly polarized, and for which the quantum efficiency directly determines the system sensitivity.
