Results 381 to 390 of about 6,360,569 (404)
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Astronomy at radio frequencies
Contemporary Physics, 1965Abstract The radio astronomer requires a specialized combination of aerial and receiver to be able to detect, measure and map extra-terrestrial signals. The following article presents a brief account of the basic techniques employed.
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Spectroscopy at radio frequencies
Physica, 1951Abstract Opening address of the international conference on spectroscopy at radio frequencies held in Amsterdam in September 1950. A historical survey is given of the different branches of research, namely molecular radio frequency spectra, paramagnetic resonance, ferro magnetic resonance and nuclear resonance combined with atomic radio frequency ...
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2013
Radio frequency (RF) and analog/mixed-signal technologies are fundamental technologies for the fast growing wireless communications business. These technologies depend on different material systems, which can be compatible with CMOS technology process, such as SiGe-HBTs or may not be compatible with CMOS processing such as devices based on III-V ...
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Radio frequency (RF) and analog/mixed-signal technologies are fundamental technologies for the fast growing wireless communications business. These technologies depend on different material systems, which can be compatible with CMOS technology process, such as SiGe-HBTs or may not be compatible with CMOS processing such as devices based on III-V ...
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2020
In telecommunications and signal processing, information is transferred on a radio carrier wave by either modulating the amplitude or the frequency of a radio carrier wave. Radio waves have frequencies between 20 kHz and 300 GHz, corresponding to wavelengths of 15 km to 1 mm, and travel at the speed of light.
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In telecommunications and signal processing, information is transferred on a radio carrier wave by either modulating the amplitude or the frequency of a radio carrier wave. Radio waves have frequencies between 20 kHz and 300 GHz, corresponding to wavelengths of 15 km to 1 mm, and travel at the speed of light.
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Recent developments in radio frequency drying of food and agricultural products: A review
, 2019Xu Zhou, Shaojin Wang
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On-chip intercalated-graphene inductors for next-generation radio frequency electronics
Nature Electronics, 2018Jiahao Kang +11 more
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2013
There are entire books that deal with statistics, logarithms, significant figures, transmission lines, and s-parameters. We are interested in understanding and designing radio receivers and systems, which requires at least a passing knowledge of all these topics and more. This chapter serves as an introduction to many of the basic concepts we will need
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There are entire books that deal with statistics, logarithms, significant figures, transmission lines, and s-parameters. We are interested in understanding and designing radio receivers and systems, which requires at least a passing knowledge of all these topics and more. This chapter serves as an introduction to many of the basic concepts we will need
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2012
This chapter goes into the details on the general principle of indoor positioning based on radio frequency technologies. The primary methods used for positioning are broadly known as Time of Flight (TOF ), Angle of Arrival (AOA), and Signal Strength. Various evolution and combination of these basic methods have been studied and developed.
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This chapter goes into the details on the general principle of indoor positioning based on radio frequency technologies. The primary methods used for positioning are broadly known as Time of Flight (TOF ), Angle of Arrival (AOA), and Signal Strength. Various evolution and combination of these basic methods have been studied and developed.
openaire +2 more sources