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
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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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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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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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Near Field Probes
Used for accompanying measurements of high-frequency, electric and magnetic RF fields on assemblies and devices.
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Dual Polarized Broadband Horn Antennas
Linear polarized dual double ridged broadband antenna for receive and transmit applications made of aluminium.
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Field meters
Small, lightweight and low priced non frequency selective Efield meter. It can be used for relatively high field strengths e.g. to observe the field in a TEM cell or a strip line.
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Helical Antennas
Is an antenna consisting of one or more conducting wires wound in the form of a helix.
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High Gain Horn Antenna
BBHA 9120 K
The BBHA 9120 K is a linear polarized high gain horn antenna for immunity testing at short distances, especially optimized forAutomotive 600 V/m Pulse Radar Test 1.2 - 1.4 GHz. Standard: General Motors: GMW3097, Ford: EMC-CS-2009.
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Attenuators And Pulse Limiters
A bidirectional attenuator, i.e. the attenuation and power capability specification is valid for both directions. There is a large variety of applications for this attenuator: The measuring range of a spectrum analyzer can be increased. Any kind of meter can be protected against overload; it can be used to control the linearity of a meter reading. It can minimize measurement uncertainty caused by mismatched impedances. During an EMI receiver calibration an attenuator directly at the pulse generator output is inevitable.
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Monitoring Loops
The Loop Sensor was designed to monitor the generated magnetic fields in radiated susceptibility tests.
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Dipoles
Tuned half-wave dipoles have been among the most important antennas from the beginning of rf-technique. The characteristics of half-wave dipoles have been calculable very early using the Maxwell and Hertz equations. Therefore the half wave dipole became a reference antenna.
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Passive Magnetic Antennas, TX-Loop Antennas
A passive loop antenna which is matched to a resonance frequency of 13.56 MHz with 370 kHz bandwidth (-3dB)The purpose of the antenna is to produce defined magnetic fields at 13.56 MHz efficiently, i.e. to test near field communication devices (NFC) or RFID equipment.
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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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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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ISN / T-Networks
Is used to measure the asymmetrical interference voltage on symmetrical data or telecommunication lines.
