Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Hitoshi Iida"'
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 62:1545-1549
We describe an uncertainty evaluation of the $-$ 100-dBc/Hz flat phase noise standard at 10 MHz, which ensures traceability to the International System of Units. The flat phase noise standard signal is produced using a carrier combined with white noi
Publikováno v:
IEEJ Transactions on Fundamentals and Materials. 131:231-238
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 58:1090-1096
A cryogenic noise source (CNS) that was cooled by liquid nitrogen was constructed and evaluated in the 8-12 GHz frequency range (the WR-90 waveguide band). A noise temperature of the CNS requires a correction with respect to the boiling point of liqu
Publikováno v:
2012 Conference on Precision electromagnetic Measurements.
We have realized a phase noise standard of a signal with a −100 dBc/Hz flat phase noise at 10 MHz for Fourier frequencies of 1 Hz to 100 kHz, which ensures traceability to the International System of Units (SI). The flat phase noise signal is produ
Publikováno v:
CPEM 2010.
A method to estimate the noise temperature of a noise source by using an auxiliary transmission line (ATL) is proposed and discussed. A cryogenic 7-mm coaxial noise source is developed for verifying the ATL method. The noise temperature is determined
Publikováno v:
2008 Conference on Precision Electromagnetic Measurements Digest.
A cryogenic noise source (CNS) cooled by liquid nitrogen (LN2) is constructed and evaluated in the frequency range of 8 GHz to 12 GHz (WR-90 waveguide band). A noise temperature of the CNS is changed from the boiling temperature of LN2 by a correctio
Publikováno v:
IEEJ Transactions on Fundamentals and Materials. 131:302-303
We studied a variable noise source using a precision variable attenuator in the frequency range of 50 - 75 GHz, and its uncertainty was analyzed in detail. To determine the noise temperature of the noise source, the variable attenuator was calibrated
Publikováno v:
IEEJ Transactions on Fundamentals and Materials. 131:300-301
We have experimentally evaluated the equivalent noise temperature (ENT) of a microwave standard noise source. The resistivity and its temperature coefficient of a transmission line (TL) of the noise source were determined by the curve fitting techniq
Publikováno v:
Japanese Journal of Applied Physics. 51:018002
We have realized a phase noise standard of a signal with a -100 dBc/Hz flat phase noise at 10 MHz for Fourier frequencies of 1 Hz to 100 kHz, which ensures traceability to the International System of Units (SI). The flat phase noise signal is produce