Showing results: 1 - 10 of 10 items found.
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Type NRD -
National RF, Inc
Reference antennas are precision dipole antennas that offer a fixed 2.15 dB of gain over an isotropic antenna along the major lobe axis at specified frequencies (2.15 dBi). They are intended to be used for antenna field pattern and gain measurements, or general RF sensing in the laboratory.
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Clampco Sistemi
An isotropic antenna that allows to carry out radiated emission and environment exposure measurement (elettrosmog) to the radio frequencies in proximity of radio and television stations and repeaters for mobile telephone.
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EMC Test Design, LLC
Active broadband isotropic antenna combined with portable USB powered spectrum analyzer. OFA-S/SE antenna has frequency response independent of antenna or electric field orientation. It offers broad dynamic range for the variety of RF regulatory, safety, EMC, wireless and telecommunications applications. Spectrum analyzer SA-S displays the frequencies and field strength of selected signals, allowing all results to be viewed and stored on PC.
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SFA-S -
EMC Test Design, LLC
Active broadband isotropic antenna combined with portable USB powered spectrum analyzer. OFA-S/SE antenna has frequency response independent of antenna or electric field orientation. It offers broad dynamic range for the variety of RF regulatory, safety, EMC, wireless and telecommunications applications. Spectrum analyzer SA-S displays the frequencies and field strength of selected signals, allowing all results to be viewed and stored on PC.
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Raymond RF Measurements Corp.
Raymond RF's Antenna Measurement Software performs 2-D (polar/rectangular) and 3-D (spherical) antenna pattern measurements for passive antennas and active wireless mobile stations (cell phones). Insertion loss of passive devices is included as part of the calibration component. Data management and reporting of antenna properties such as half power beam-width, directivity, gain, radiation efficiency, total radiated power, and total isotropic sensitivity. AMS performs and reports all measurements required by the CTIA Over-the-Air Performance Test Plan.
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QuietBox-AR "Mini-Range" -
Raymond RF Measurements Corp.
The Raymond RF QuietBox-AR is a mobile solution for pre-compliance EMC and CTIA testing, 3D antenna pattern measurement, and total radiated power & total isotropic sensitivity testing. Fully equipped with client-specified broadband absorber, integrated antenna and rolling cart, the QuietBox-AR is a cost effective option for product verification prior to fully compliant testing.
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ERAVANT
In radio communication, an omnidirectional antenna is a class of antenna which radiates equal radio power in all directions perpendicular to an axis (azimuthal directions), with power varying with angle to the axis (elevation angle), declining to zero on the axis.[1][2] When graphed in three dimensions (see graph) this radiation pattern is often described as doughnut-shaped. Note that this is different from an isotropic antenna, which radiates equal power in all directions, having a spherical radiation pattern. Omnidirectional antennas oriented vertically are widely used for nondirectional antennas on the surface of the Earth because they radiate equally in all horizontal directions, while the power radiated drops off with elevation angle so little radio energy is aimed into the sky or down toward the earth and wasted. Omnidirectional antennas are widely used for radio broadcasting antennas, and in mobile devices that use radio such as cell phones, FM radios, walkie-talkies, wireless computer networks, cordless phones, GPS, as well as for base stations that communicate with mobile radios, such as police and taxi dispatchers and aircraft communications.
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PI-SH-FCC, PI-SH-ICNIRP -
EMC Test Design, LLC
An isotropic electric field probe with shaped frequency response meeting the ICNIRP or FCC RF safety standards for occupational and general public exposure limits (see the specified frequency ranges below). Meter readings are shown in % of the STD – standard reference level, eliminating the need to know the source frequency. Probe output is proportional to RF power density in the whole specified power range, producing the correct RF power measurements in single and multi-signal environments, typically present at multiple antenna sites.
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Schwarzbeck Mess Elektronik
Tuned half-wave dipoles have been among the most important antennas from thebeginning of rf-technique. The characteristics of half-wave dipoles havebeen calculable very early using the Maxwell and Hertz equations. Therefore the halfwave dipole became a reference antenna. The ideal (lossless) half-wave dipole has anisotropic gain of 2.15 dBi and an impedance of 73 Ohm. The directional pattern is circular inthe H-plane, "8-shaped" in the E-plane with the maxima perpendicular on the dipole axis.The half-power beamwidth (-3 dB) is approx. 78°. The impedance of real dipoles isdepending on the thickness/length ratio of its elements, typical values are 60-70 Ohm.Dipoles for industrial applications are available in the frequency range from 30MHz to up to approx. 4 GHz. The dipole elements are length variable (telescopic) orwith fixed length, the latter especially above 1 GHz. The most important applications aretest site evaluations (NSA, normalized site attenuation) and the determination of ERP(Effective Radiated Power) respectively EIRP (Effective Isotropic Radiated Power).