Global ETD Search

331	A 1-volt CMOS wide dynamic Range operational amplifier Blalock, Benjamin Joseph 12 1900 (has links) No description available. Electric circuits
332	Temperature dependent RF and optical device characterization and its application to circuit design Gebara, Edward 08 1900 (has links) No description available. Power amplifiers Design and construction Cryoelectronics
333	Utveckling av lyssningstillbehör för samtalsförstärkare / Development of Listening Accessories for Personal Amplifiers Fredrikson, Daniel January 2014 (has links) En av Bellman & Symfons produkter är den så kallade samtalsförstärkaren. Samtalsförstärkaren är ett hörselhjälpmedel, som genom digital signalbehandling förstärker ljudnivån samtidigt som oönskat bakgrundsljud dämpas. Via ett 3,5 mm jack på enheten kan vanliga lyssningstillbehör anslutas, såsom hörlurar och öronsnäckor. De lyssningstillbehör som Bellman & Symfon erbjuder idag är av enkel modell, och lämnar mycket att önska vad gäller ljudkvaliteten. Genom detta projektarbete har jag studerat förbättringsalternativ till dessa lyssningstillbehör, men har fokuserat främst på så kallade stetoclips. Via mjukvaran Smaart v.7 Di simulerade jag upplevd frekvensgång hos olika lyssningstillbehör. Dessa uppmätta värden kompletterade jag sedan med lyssningstester. Testresultaten ledde fram till utvecklingen av en prototypmodell. Via två olika testgrupper jämfördes prototypmodellen med de befintliga lyssningstillbehören. Testgruppernas tankar och åsikter ligger till grund för många av de slutsatser som dras i slutet av rapporten. / One of Bellman & Symfon’s products is the so–called personal amplifier. The personal amplifier is a hearing aid, which uses digital signal processing to amplify the sound level, while unwanted background noise is attenuated. Standard listening accessories, such as headphones and ear buds, can be attached to the device via a 3,5 mm jack. The accessories offered by Bellman & Symfon today are simple and doesn’t match the quality of the personal amplifier. In this project, I have examined which improvement can be made on these listening accessories, to make them better suit the needs of hearing impaired persons. My main focus has been on the so-called stetoclips, which lacks a lot of details in terms of sound quality. I have simulated perceived frequency response via the software Smaart v.7 Di, and I combined these results with the results from different listening tests. The test results lead to the development of a new prototype model. Two different test groups compared the prototype to the current models, and gave me some very useful thoughts and opinions about the project. Many of the conclusions drawn at the end of this project are based on the results from the two test groups. personal amplifiers headphones hearing sound technology samtalsförstärkare hörlurar hörsel ljudteknik
334	A wideband CMOS low-noise amplifier for UHF applications Lo, Ivy Iun January 2005 (has links) Thesis (M.S.)--University of Hawaii at Manoa, 2005. / Includes bibliographical references (leaves 95-98). / xii, 98 leaves, bound ill. 29 cm
335	Linearly repeatered communication systems using optical amplifiers / Pimpalkhare, Mangesh S., January 1992 (has links) Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1992. / Vita. Abstract. Includes bibliographical references (leaves 77-79). Also available via the Internet.
336	Spectroscopy of thulium doped silica glass Simpson, David Allan. January 2008 (has links) Thesis (Ph.D.)--Victoria University (Melbourne, Vic.), 2008.
337	6 GHz inductor-less tuned low noise amplifier incorporating an artificial tank circuit / Ahmed, Abdulhakim, January 1900 (has links) Thesis (M.App.Sc.) - Carleton University, 2005. / Includes bibliographical references (p. 110-113). Also available in electronic format on the Internet.
338	Design and evaluation of a gm-RC bandpass filter using a 42 GHz linear OTA incorporating heterojunction bipolar transistors Sun, Shao-Chi. January 1994 (has links) Thesis (M.S.)--Ohio University, November, 1994. / Title from PDF t.p.
339	A study of crest factor reduction for WCDMA and IS-95 systems Kuo, Hoi, January 2006 (has links) Thesis (M. Phil.)--University of Hong Kong, 2007. / Title proper from title frame. Also available in printed format.
340	1/f AM and PM noise in a common source heterojunction field effect transistor amplifier Cardon, Christopher Don. January 2007 (has links) Thesis (M.S.)--University of Wyoming, 2007. / Title from PDF title page (viewed on July 28, 2008). Includes bibliographical references (p. 61-62).

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