How Many Beams Does Sub-THz Channel Support?

Antenna, radio frequency (RF) circuit, algorithm, and system researchers on sub-THz RF are interested in knowing characteristics of corresponding radio channels. Among other things, a relevant question is the number of beams supported by the channel. From wideband directional propagation measurement...

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Bibliographic Details
Published inIEEE antennas and wireless propagation letters Vol. 21; no. 1; pp. 74 - 78
Main Authors Kyosti, Pekka, De Guzman, Mar Francis, Haneda, Katsuyuki, Tervo, Nuutti, Parssinen, Aarno
Format Journal Article
LanguageEnglish
Published New York IEEE 01.01.2022
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Algorithms
Antenna measurements
Approximation
Beam
Circuits
Directive antennas
Distribution functions
Dynamic range
Frequency measurement
Gain
measurements
Phased arrays
propagation
Radio frequency
terahertz
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Summary:Antenna, radio frequency (RF) circuit, algorithm, and system researchers on sub-THz RF are interested in knowing characteristics of corresponding radio channels. Among other things, a relevant question is the number of beams supported by the channel. From wideband directional propagation measurements one can estimate how many significant paths are present in a measurement location, but interpreting that to separable beams is not trivial. In this letter, we introduce three methods to approximate the number of beams that a measured power angular delay profile can support. We show also example evaluations and distribution functions of beam numbers, estimated from indoor D-band measurement data.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2021.3118464