Schwarzbeck Mess Elektronik
An international manufacturer of precision measurement technology, Schwarzbeck has own laboratory facilities to calibrate a variety of instruments, antennas and measurement equipment of EMC and RF technology.
- +49 (0) 6228 / 1001
- +49 (0) 6228 / 1003
- office@schwarzbeck.de
- Ziegelhäuser Straße 25
Schönau, D - 69250
Germany
Categories
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Loop Antennas
A loop antenna is a radio antenna consisting of a loop or coil of wire, tubing, or other electrical conductor, that for transmitting is usually fed by a balanced power source or for receiving feeds a balanced load.
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Radiating Loops
The magnetic, handheld coil was designed to generate defined mag-netic fieldstrength in the frequency range from DC up to 5 (7) MHz. The main application is immunity testing against magnetic fields.
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Antenna Holders / Baluns
They are vital components in radio antenna systems. They enable the conversion of a balanced signal to an unbalanced one, ensuring optimal communication between the antenna and the radio.
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CDN - Coupling / Decoupling Networks
The Coupling- / Decoupling Networks are used to inject common mode disturbances to Equipment under Test (EuT). Further the CDNs provide sufficient decoupling between Auxiliary Equipment (AE) and disturbance signal. The requirements for CDN and their application are described in the standard IEC 61000-4-6 (Immunity to conducted disturbances, induced by radio-frequency fields). CDNs have a common mode impedance of 150 Ohm and are available for a multitude of cable types and connectors.
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Biconical Antennas
Biconical Antennas have dipole like characteristics (e.g. circular directional pattern in the H-plane,"8"-shaped in the E-plane, fixed phase center, comparable gain), with an enormous wide bandwidth achieved by the double cone elements.
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Biconic Logarithmic Periodic Antennas
Stacked LPDA
The stacked Logarithmic Periodic Dipole Antenna consists of two ordinary Log.-Per. structures. The excellent characteristics (flat gain over a large bandwidth, low SWR) of the ordinary Log.-Per. designs could be maintained using the stacked LP design. The stacked design helps to focus the directional pattern of the H-plane somewhat, resulting in a typical gain improvement of ca. 2-3 dB compared to an ordinary LPDA. This is especially important for immunity testing, where a maximum fieldstrength and a good field uniformity is required. The beamwidth in the E-plane and the H-plane are nearly identical, providing an optimised illumination of the EuT with minimised ground reflection influence. Further the STLP 9128 C has an excellent cross-polar rejection.
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Handheld Direction Finder
Designed to locate radio transmitters in conjunction with a suitable portable receiver or spectrum analyser.
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Standard Gain Horn Antennas
Linear polarized Broadband Horn Antenna (Brass with Plastic mounting body) for Receive and Transmit Applications.
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Preamplifiers
Is an electronic amplifier that converts a weak electrical signal into an output signal strong enough to be noise-tolerant and strong enough for further processing, or for sending to a power amplifier and a loudspeaker.
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Voltage Probes
In addition to EMI measurement with LISNs (Line Impedance Stabilisation Networks, Artificial Mains Networks), Probes are used for Terminal or Line voltage measurement.
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LISN Line Impedance Stabilisation Networks / AMN Artificial Mains Network
A LISN Line Impedance Stabilization Networks / AMN Artificial Mains Network: *supplies the neccessary mains voltage (AC or DC) and current for the Equipment under Test (EuT).*couples interference voltage generated by the EuT and supplies it to the receiver.*provides well defined RF-impedance to the Equipment under Test (EuT)*keeps away unwanted disturbance coming from mains (filter)*protects the mains from unwanted disturbance voltage generated by the EuT
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Helmholtz Coils / Radiating Loops
Formed by a pair of conducting circular coils with many turns, each carrying a current. The coils are separated by a distance equal to the radius of the circular loops.
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Logarithmic Periodic Broadband Antennas
Standard LPDA
Is a demountable logarithmic- periodic broadband Antenna (LPDA). For transport and space saving storage, it is delivered with fast links. The fast links allow to demount the rear elements within a few seconds without any tools.
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Van der Hoofden Test Head
The "Van der Hoofden“ test head allows to determine the exposure of humans to radiation caused byluminaries.
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Baluns
Causes a voltage transformation Uin / Uout = 1 / 2 and is designed for operation with hand- held field coil when performing tests.
