Title :
A broadband waveguide calorimeter for mm-wave power meter calibration in the frequency range from 50 GHz to 110 GHz
Author :
Shimaoka, Kazuhiro ; Kinoshita, Moto ; Inoue, Takemi
Author_Institution :
Nat. Inst. of Adv. Ind. Sci. & Technol., Nat. Metrol. Inst. of Japan, Tsukuba, Japan
Abstract :
A new broadband rectangular waveguide calorimeter for radio-frequency (RF) power meter calibration in the mm-wave region is reported. The calorimeter has a quasi-twin structure exploiting the WR-10 and WR-15 rectangular waveguides, and its operational frequency ranges from 50 GHz to 110 GHz. This calorimeter is characterized by its high measuring speed and sensitivity. A thermal feedback control system reduces the typical reading time per frequency to less than 10 min, and the minimum measurable incident RF power is 0.2 mW. A new technique for reducing the equivalence error (EE) by utilizing a flat mm-wave absorber is also discussed.
Keywords :
calibration; calorimeters; millimetre wave measurement; power meters; sensitivity; RF power meter calibration; WR-10 rectangular waveguides; WR-15 rectangular waveguides; broadband rectangular waveguide calorimeter; equivalence error reduction; flat mm-wave absorber; frequency 50 GHz to 110 GHz; mm-wave power meter calibration; power 0.2 mW; quasi-twin structure; radio-frequency power meter calibration; sensitivity; thermal feedback control system; Broadband communication; Calibration; Frequency measurement; Power measurement; Radio frequency; Reflection; Temperature measurement; Calibration; calorimeter; measurement standards; millimeter wave measurements; power meter; terahertz; waveguide;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM), 2012 Conference on
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4673-0439-9
DOI :
10.1109/CPEM.2012.6250674
