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{"id":1565,"date":"2020-12-29T13:49:41","date_gmt":"2020-12-29T13:49:41","guid":{"rendered":"http:\/\/www.akoriot.com\/?page_id=1565"},"modified":"2021-02-14T10:05:12","modified_gmt":"2021-02-14T10:05:12","slug":"radiation-measurement","status":"publish","type":"page","link":"https:\/\/www.akoriot.com\/radiation-measurement\/","title":{"rendered":"Radiation Measurement"},"content":{"rendered":"
[et_pb_section fb_built=”1″ specialty=”on” _builder_version=”4.7.4″ _module_preset=”default” custom_margin=”0px||||false|false”][et_pb_column type=”3_4″ specialty_columns=”3″ _builder_version=”3.25″ custom_padding=”|||” custom_padding__hover=”|||”][et_pb_row_inner column_structure=”1_2,1_2″ _builder_version=”4.7.4″ _module_preset=”default” custom_margin=”||||false|false”][et_pb_column_inner type=”1_2″ saved_specialty_column_type=”3_4″ _builder_version=”4.7.4″ _module_preset=”default” custom_padding=”55px||||false|false”][et_pb_image src=”https:\/\/www.akoriot.com\/wp-content\/uploads\/2020\/12\/MegiQ-RMS-IMAGE.jpg” alt=”MegiQ RMS Setup” title_text=”MegiQ-RMS-IMAGE 32KB” align=”center” _builder_version=”4.7.4″ _module_preset=”default” custom_margin=”||||false|false”][\/et_pb_image][\/et_pb_column_inner][et_pb_column_inner type=”1_2″ saved_specialty_column_type=”3_4″ _builder_version=”4.7.4″ _module_preset=”default”][et_pb_text _builder_version=”4.7.4″ _module_preset=”default” module_alignment=”center”]<\/p>\n
[\/et_pb_text][\/et_pb_column_inner][\/et_pb_row_inner][et_pb_row_inner _builder_version=”4.7.4″ _module_preset=”default”][et_pb_column_inner saved_specialty_column_type=”3_4″ _builder_version=”4.7.4″ _module_preset=”default”][et_pb_tabs _builder_version=”4.7.4″ _module_preset=”default” tab_font_size=”13px” width=”100%” overflow-x=”scroll” overflow-y=”scroll” border_radii=”on|6px|6px|6px|6px” border_width_all=”6px” border_color_all=”#d1d2ed”][et_pb_tab title=”RMS Overview” _builder_version=”4.7.4″ _module_preset=”default”]<\/p>\n
The MegiQ Radiation Measurement System (RMS) is a compact test system that performs 3-axis radiation pattern measurement in non-anechoic spaces.<\/p>\n
With a frequency range of 370 MHz to 6 GHz covered by the three models, they are well suited for characterization and measurement of Antenna Radiation Patterns, Antenna Gain, ERP, TRP, Field Strength.<\/p>\n
Extensive evaluation has shown that \u2013 with reasonable setup – the accuracy of the RMS is similar to that of anechoic test labs.<\/p>\n
Characterize wireless devices of today, like IOT devices, routers, phones, domotica (home automation) products, electronic gadgets, tablets, laptops, RF-modules etc.<\/p>\n
The RMS is used for these measurements:<\/p>\n
While this is usually measured in an anechoic chamber to avoid reflections to affect the measurement, the RMS has a smart antenna design to reduce the sensitivity for reflections. This allows radiation measurements to be made in relatively small lab or office spaces.<\/p>\n
The RMS system itself has an accuracy of \u00b1 1dB. In a reasonable space one can expect an extra uncertainty of 1 or 2 dB. The repeatability of measurements is excellent at \u00b10.5 dB. No user calibration is required.<\/p>\n
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The RMS rotates an object on the turntable and measures the radiation. With a rotation around the X, Y and Z axis the software plots the patterns and calculates statistics including Total Radiated Power (TRP). Each measuring point can contain a sweep of multiple frequencies, so that multiple radiation patterns can be measured in one rotation sequence.<\/p>\n
With the Generator option the RMS can also perform an antenna sweep and show the antenna gain over frequency.<\/p>\n
The RMS comes with an object fixture for small devices that allows easy positioning of the EUT in orthogonal positions on the object table. A labeling system helps the user to keep track of the axes.<\/p>\n
The RMS system works well in a moderate space. A 4 x 4 x 3 meter room works well above 800 MHz. For smaller spaces or lower frequencies a few strategic absorbers may be required.<\/p>\n
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With our RMS Application Programming Interface the RMS systems can be expanded with custom features and data processing as well as integration with other systems.<\/p>\n
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[\/et_pb_tab][et_pb_tab title=”Features” _builder_version=”4.7.4″ _module_preset=”default”]<\/p>\n
[\/et_pb_tab][et_pb_tab title=”Software” _builder_version=”4.7.4″ _module_preset=”default”]<\/p>\n
The software for controlling the RMS and managing the measurement data is provided license free.<\/p>\n
The RMS software controls the measurement system and allows easy setup and performing the measurements, organizing the data and create reports. It will guide the user through the 3 rotation axis steps.<\/p>\n
For EUT with a constant carrier or packet stream mode the RMS is used in a passive mode to rotate the EUT and record the field strength. For constant carriers, the receiver can measure multiple frequencies for each measurement point so that harmonic patterns (up to 4 or 6 GHz) can be measured simultaneously. The minimum step size is 2 degrees.<\/p>\n
For EUT without a transmitter (prototype or standalone antenna) the Generator output can be used to feed a test signal to the EUT. In this mode the RMS can measure rotation patterns (at up to 30 frequencies simulations) or perform a frequency sweep of the antenna gain. The S- parameters of the feed coax can be imported to compensate for the loss and impedance of the cable.<\/p>\n
In idle mode the RMS monitors the signal and shows the polarization in real time. It can also transmit a carrier with a calibrated power on the horizontal or vertical antenna.<\/p>\n
The results can be presented in Antenna Gain (dBi), Radiated Power EiRP (dBm) or Field Strength (dBuV\/m). The software calculates statistics such as Min\/Max level, Average, Total Radiated Power (TRP), Antenna Efficiency (dBi) and Directivity (dB).<\/p>\n
The rotation table can be controlled manually and a rotation offset aides in the rotation of large objects.<\/p>\n
With several preset measurements the software is very easy to use for most common measurements like rotations and sweeps.<\/p>\n
The graphs can be dragged in any way with any of the graph types for the measurement. Report output follows the layout of the screen. There are several color schemes.<\/p>\n
Measurements can be stored in a session manager that keeps the measurements for a session in a single file. All settings including cable correction, screen layout, markers etc are stored along with the measurement in the session.<\/p>\n
For measurements that use the generator output or an external generator, the S-parameters (attenuation) of the feed coax can be imported in the software to compensate the measured data.<\/p>\n
An Application Programming Interface for VB, C++, C#, Labview, etc is available to allow integration of the RMS in a lab setup or an automated factory testing system.<\/p>\n
[\/et_pb_tab][et_pb_tab title=”Measurements” _builder_version=”4.7.4″ _module_preset=”default”]<\/p>\n
These are some measurements and graphs measured by the RMS system.<\/p>\n
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This set of Radiation Patterns of a Log Per antenna from 600MHz to 4GHz was measured in one rotation sequence:<\/p>\n
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[\/et_pb_tab][et_pb_tab title=”Specs” _builder_version=”4.7.4″ _module_preset=”default”]<\/p>\n
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