Radiometry and the Friis transmission equation

dc.contributor.authorShaw, Joseph
dc.date.accessioned2024-07-09T22:08:38Z
dc.date.available2024-07-09T22:08:38Z
dc.date.issued2013
dc.description.abstractTo more effectively tailor courses involving antennas, wireless communications, optics, and applied electromagnetics to a mixed audience of engineering and physics students, the Friis transmission equation—which quantifies the power received in a free-space communication link—is developed from principles of optical radiometry and scalar diffraction. This approach places more emphasis on the physics and conceptual understanding of the Friis equation than is provided by the traditional derivation based on antenna impedance. Specifically, it shows that the wavelength-squared dependence can be attributed to diffraction at the antenna aperture and illustrates the important difference between the throughput (product of area and solid angle) of a single antenna or telescope and the throughput of a transmitter-receiver pair.en_US
dc.identifier.citationJ. A. Shaw, “Radiometry and the Friis Transmission Equation,” Am. J. Physics 81(1), 33-37 (2013).en_US
dc.identifier.issn0002-9505
dc.identifier.urihttps://scholarworks.montana.edu/handle/1/18664
dc.language.isoen_US
dc.publisherAmerican Association of Physics Teachers
dc.rightsC 2013 American Association of Physics Teachers
dc.subjectElectromagneticsen_US
dc.subjectOpticsen_US
dc.subjectApplied mathematicsen_US
dc.subjectElectrical engineeringen_US
dc.titleRadiometry and the Friis transmission equationen_US
dc.typeArticleen_US
mus.citation.extentfirstpage33en_US
mus.citation.extentlastpage37en_US
mus.citation.issue1en_US
mus.citation.journaltitleAmerican Journal of Physicsen_US
mus.citation.volume81en_US
mus.identifier.categoryEngineering & Computer Scienceen_US
mus.identifier.categoryPhysics & Mathematicsen_US
mus.identifier.doi10.1119/1.4755780en_US
mus.relation.collegeCollege of Engineeringen_US
mus.relation.departmentElectrical & Computer Engineeringen_US
mus.relation.universityMontana State University - Bozemanen_US

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