Abstract
Abstract We have manufactured a close range Dicke type radiometer which consists of two stage low noise amplifier and diode detector. Frequency range of this system is 35 GHz. And this is used for studying temperature calibration on specific objects. We have present millimeter-wave radiometer's thermal calibration method and its characteristics. From absolute temperature 299K to 309K, in proportion to increase temperature, output voltages are linearly increased. In this case, undefined objects can be measured thermal noise temperature relatively. Overall from absolute temperature 214K to 309K, we have obtained relation of temperature and output voltage;V= 0.03601K - 10.70517. Key Words : Dicke type radiometer, Millimeter-wave radiometer, Thermal noise, Calibration * 정회원, 상지대학교 이공대학 응용물리전자학과접수일자 2010.9.4, 수정완료 2012.5.15게재확정일자 2012.6.8.Received: 4 September, 2010, Revised: 15 May, 2012Accepted: 8 June, 2012 * Corresponding Author:kookim@dongguk.eduDept. of Applied Physics & Electronics, Sangji University, Korea
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