Publisher： Bentham Science Publishers
E-ISSN： 1877-6124|2|1|12-22
ISSN： 2210-6863
Source： Recent Patents on Signal Processing, Vol.2, Iss.1, 2012-04, pp. : 12-22
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Abstract
There is currently a great deal of interest in the development of efficient compact sources of terahertz (THz) radiation. There are many factors of device and materials design which are still under ongoing improvement with the aim of producing an efficient, high power, room-temperature THz signal emission device which is tunable over a practical THz frequency range. The recent advances in production of various room-temperature THz radiation sources are reviewed with particular emphasis on photomixer antenna devices, and recent patents on technology and methods relating to: pulsed and continuous wave (CW) THz generation via nonlinear crystals; quantum cascade lasers (QCLs); ultrafast diodes and photodiodes; and heterodyne sources are discussed.
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