montena technology sa
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1728 Rossens
Switzerland
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Field sensors
Ground plane field sensors
These derivative field sensors are designed for the measurement of fast pulsed electric or magnetic fields, especially for the MIL-STD-461 RS105 immunity tests. They can be directly connected to a fast oscilloscope through a passive integrator that we also propose as an option. These sensors can also be used for the precise control of the field inside TEM and GTEM cells.
| REFERENCE | TYPE | RISE TIME | FREQUENCY RANGE | EQUIVALENT AREA |
| SGE1G | D-dot (electric) | 320 ps | 1 GHz | 1 x 10-2 m² |
| SGE3-5G | D-dot (electric) | 110 ps | 3.5 GHz | 1 x 10-3 m² |
| SGE10G | D-dot (electric) | 32 ps | 10 GHz | 1 x 10-4 m² |
| SGM2G | B-dot (magnetic) | 160 ps | 2.0 GHz | 1.1 x 10-4 m² |
Free space field sensors
For the measurement in free space, a free space field sensor is necessary. We propose a range of derivative magnetic and electric field sensors up to 10 GHz. They consist of a derivative sensor (B-dot or D-dot) and a balun. For measurements free from interferences, the use of a fibre optic link is recommended.
| REFERENCE | TYPE | RISE TIME | FREQUENCY RANGE | EQUIVALENT AREA |
| SFE1G | D-dot (electric) | 320 ps | 1.0 GHz | 2 x 10-2 m² |
| SFE3-5G | D-dot (electric) | 110 ps | 3.5 GHz | 2 x 10-3 m² |
| SFE10G | D-dot (electric) | 32 ps | 10 GHz | 2 x 10-4 m² |
| SFM2G | B-dot (magnetic) | 160 ps | 2.0 GHz | 2.2 x 10-4 m² |
Two ultra-broadband baluns, to be used with the above free space field sensors, are proposed.
| ReFeRENCE | Type | Frequency range | In / out impedance | Connectors |
| BL3-5G | Balun | 500 Hz - 3.5 GHz | 50 Ω | SMA |
| BL10G | Balun | 100 kHz - 10 GHz | 50 Ω | SMA |
Passive integrators
Passive integrators are used to compensate the derivative behaviour of B-dot / D-dot sensors. They have 1 megohm output impedance and should be directly connected to the high impedance input of the measurement device.
| ReFeRENCE | Type | Cut-off frequency | In / out impedance | Connectors |
| ITR200N-A | Passive integrator, T = 200 ns | 1.4 GHz | 50 Ω / 1 MΩ | input N, output BNC |
| ITR1U2-A | Passive integrator, T = 1.2 us | 1.0 GHz | ||
| ITR12U-A | Passive integrator, T = 12 us | 200 MHz | ||
| ITR200N-S | Passive integrator, T = 200 ns | 1.4 GHz | 50 Ω / 1 MΩ | SMA(f) - SMA(m) |
| ITR1U2-S | Passive integrator, T = 1.2 us | 1.0 GHz | ||
| ITR12U-S | Passive integrator, T = 12 us | 200 MHz |
