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== A Unique Technology for Real-Time Detection of Transient Fields & Signals ==
EMAG Technologies Inc. utilizes a novel patented technology for real-time measurement of electric and magnetic fields. EO and MO modulation effects provide a unique means of sensing and detecting wideband RF and microwave signals in real time. Since the carrier signal is at optical frequencies, the modulating RF field can have substantial instantaneous bandwidths. [[NeoScan]] can probe and register complex temporal waveforms in real time. Since you measure fields rather than voltages or currents using a non-contact probe, [[NeoScan]] probes in effect exhibit an infinite impedance. This feature eliminates all the device loading concerns. Â <table><tr><td>[[Image:NEOWEB20.png|thumb|550pxleft|640px|A high-speed digital sampling oscilloscope showing an amplitude modulated waveform detected by a NeoScan field probe and comparing it to the signal source's waveform.]]</td></tr></table>Â Our probe systems can be used as an instrument for real-time measurement of wideband RF signals in microwave circuits and systems. They can also be utilized in a unique way for a variety of other detection and sensing applications where the presence of metallic parts is highly undesirable such as directed energy and high power microwave systems. Using a robust, patented, optical processing technology, the probes can have standoff distances up to 50 meters from the physical location of the optical mainframe system. Due to the fast response of the EO crystal, it is possible to measure extremely high-bandwidth signals with the normal SNR limitations of wideband signal detection. Using this capability, EMAG Technologies Inc. has developed the worldâs first fiber-based real-time polarimetric electric field sensor system for the measurement of high-power microwave signals. The figure below shows an example of a real time measurement of a 6.6ns pulse with 10kV/m peak field strength. The upper trace shown on the oscilloscope is the received signal, and the lower trace is the detected signal. <table><tr><td>[[Image:NEOWEB21.png|thumb|460pxleft|640px|Measuring high-power pulse waveforms using NeoScan non-invasive field probes.]]</td></tr></table>Â == Custom Multi-Channel Real-Time Field Probing Systems ==Â [[NeoScan]] systmes can be configured in custom multi-channel architectures for simultaneous field measurements at multiple points and locations. Different channels can measure different polarizations in a totally coherent manner. Multi-axis field probes can be used to measure different field components simultaneously at the same location. Ruggedized probes can be supplied for harsh operational environments. Moreover, specially coated probes with better protection against erosion can be supplied to measure the fields inside liquid or saline environments such as biological tissues.
EMAG Technologies Inc. utilizes a novel patented technology for realThe [[NeoScan]]-DET system configuration provides one or more time measurement of electric and magnetic fieldsdomain output signals corresponding to each probe or each optical channel. EO These temporal data are monitored, recorded and MO modulation effects provide plotted as a unique means function of sensing and detecting wideband time in [[NeoScan]]'s visual software environment. The output RF signal can be measured and microwave signals in real timefurther analyzed using a high-speed digital sampling oscilloscope to be supplied by the user. Since Depending on the carrier signal is at optical frequenciesinstantaneous bandwidth of the detected waveform, averaging algorithms might be needed to extract the modulating RF field can have substantial bandwidthssignal satisfactorily out of the background noise.
Our probe systems can be used as an instrument for <table><tr><td>[[Image:NEOWEB46.png|thumb|left|360px|A second-generation, real-time measurement of wideband RF signals in microwave circuits and systems. They can also be utilized in a unique way for a variety of other detection and sensing applications where the presence of metallic parts is highly undesirable such as directed energy and high power microwave systems. Using a robust, patented, optical processing technology, the probes can have standoff distances up to 50 meters from the physical location of the optical mainframe 3-channel NeoScan systemdeveloped by EMAG's Opteos Division.]]</td></tr></table>
The figures above and below show older generation 3-channel and 4-channel [[NeoScan]] systmes system configurations, respectively, developed by EMAG Technologies' Opteos Division. You can see three or four FC/APC optical fiber connectors for the field probes along with three or four SMA connectors for the RF output signals. The latter can be configured in directly fed into a multi-channel architectures for simultaneous field measurements at multiple points and locationshigh speed digital sampling oscilloscope to display the detected temporal waveforms. Different channels The same time domain output signals can measure different polarizations in be down-converted to a totally coherent mannerlower IF frequency and digitized for further signal processing.
Due to the fast response of the EO crystal, it is possible to measure extremely high-bandwidth signals with the normal SNR limitations of wideband signal detection. Using this capability, EMAG Technologies Inc. has developed the worldâs first fiber-based real-time polarimetric electric field sensor system â [[NeoScan]] â for the measurement of high-power microwave signals. Figure 1.4 is an example of a real time measurement of a 6.6 nsec pulse with 10 kV/m peak field strength. The upper trace shown on the oscilloscope is the received signal, and the lower trace is the detected signal.
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[[Image:NEOWEB45.png|thumb|left|550px|RT-20G - A 4-channel predecessor of the real-time NeoScan system developed by EMAG's Opteos Division. The four output RF channels are directly fed into a four-channel high speed digital sampling oscilloscope.]]
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