NBS Technical NoteU.S. Government Printing Office, 1981 |
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Page 35
... gain resulting from the presence of the lens is the product 1.72 x 1.18 , or about 3.5 . This is a power or irradiance gain and not a radiance gain . Because of the magnifying effect of the ruby lens , the in- crease of source radiance ...
... gain resulting from the presence of the lens is the product 1.72 x 1.18 , or about 3.5 . This is a power or irradiance gain and not a radiance gain . Because of the magnifying effect of the ruby lens , the in- crease of source radiance ...
Page
... Gain of Open - End - Guide Launchers , 200 to 500 MHz . ( 2 ) Gain of Pyramidal Horns , 450 to 4000 MHz .... Calibration of the EFM - 5 Response as a Function of Frequency and Field Intensity ..... .47 ..49 ..50 Measurement of Antenna ...
... Gain of Open - End - Guide Launchers , 200 to 500 MHz . ( 2 ) Gain of Pyramidal Horns , 450 to 4000 MHz .... Calibration of the EFM - 5 Response as a Function of Frequency and Field Intensity ..... .47 ..49 ..50 Measurement of Antenna ...
Page
... gain vs distance at 500 MHz ..... Graph of SGH - 0.75 horn gain vs distance at 1000 MHz .. .48 .51 ... 51 Figure 21 . Response pattern of an EFM - 5 antenna at 100 MHz and 10 V / m , with the probe handle at the analytic angle ...
... gain vs distance at 500 MHz ..... Graph of SGH - 0.75 horn gain vs distance at 1000 MHz .. .48 .51 ... 51 Figure 21 . Response pattern of an EFM - 5 antenna at 100 MHz and 10 V / m , with the probe handle at the analytic angle ...
Page 7
... gain is useful for estimating the field intensity produced by a radiating antenna . The following formula can be used for large distances from the antenna : S = PG 4π d2 , ( 3 ) ( 4 ) where P = G = d = power delivered to the ...
... gain is useful for estimating the field intensity produced by a radiating antenna . The following formula can be used for large distances from the antenna : S = PG 4π d2 , ( 3 ) ( 4 ) where P = G = d = power delivered to the ...
Page 12
... gain and efficiency of various antenna types . The monitor can even be used to make limited checks of field polarization and transmitting antenna pattern . The EFM - 5 has a front panel switch for selecting measurement of either the ...
... gain and efficiency of various antenna types . The monitor can even be used to make limited checks of field polarization and transmitting antenna pattern . The EFM - 5 has a front panel switch for selecting measurement of either the ...
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antenna attenuation Backscatter response backscatter signal backscatter signature beam beam divergence Bureau of Standards C3Hg calculated calibration capture fractions components coupling loss dBV/m densimeter DEPARTMENT OF COMMERCE detector diameter diode dipole electric field electronic engineering equation experimental far-field fault signature Federal field distortion due field intensity field strength Figure frequency function graded-index fiber Haynes Hiza IEEE Trans index fibers input instrument isotropic Laboratory laser laser diode leaky modes lens logarithmic Magnetic field distortion measurement metering unit methane microbending MIXTURE mode filter mole fraction N₂ National Bureau near-field numerical aperture optical fiber OTDR output parameters peak percent perfectly conducting cylinder potentiometer pulse radiation angle radiation monitor range Rayleigh scattering Report Resistor scan Science sensor step-index fiber switch Table Tech technical Technology temperature transverse electromagnetic cell U.S. DEPARTMENT voltage waveguide wavelength ZERO
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Page 99 - NONPERIODICALS Monographs — Major contributions to the technical literature on various subjects related to the Bureau's scientific and technical activities. Handbooks — Recommended codes of engineering and industrial practice (including safety codes) developed in cooperation with interested industries, professional organizations, and regulatory bodies.
Page 99 - DC 20056. Building Science Series — Disseminates technical information developed at the Bureau on building materials, components, systems, and whole structures. The series presents research results, test...
Page 45 - A special series of interim or final reports on work performed by NBS for outside sponsors (both government and non-government). In general, initial distribution is handled by the sponsor; public distribution is by the National Technical Information Services (Springfield, Va.
Page 48 - ... public safety. The Bureau's technical work is performed by the National Measurement Laboratory, the National Engineering Laboratory, and the Institute for Computer Sciences and Technology. THE...
Page 45 - Mathematics Series — Mathematical tables, manuals, and studies of special interest to physicists, engineers, chemists, biologists, mathematicians, computer programmers, and others engaged in scientific and technical work. National Standard Reference Data Series — Provides quantitative data on the physical and chemical properties of materials, compiled from the world's literature and critically evaluated.