//PRODUCTS
Antenna Testing Sub-system
Testing procedure for active electronically scanned arrays (AESA) requires knowing precisely the complex signals at each of the antenna terminals. Inaccurate determination of the amplitude and phase values at the antenna terminals results in modifications of the antenna pattern.
Pointing errors, gain variations and an increase of the sidelobe levels are some of commonly observed errors observed because of inaccurate determination of the signals at the antenna array terminals. Accurately calibrating a large number of individual stimuli becomes complex for large arrays. In many cases, size constraints limit the ability to employ calibration techniques using auxiliary signals to compensate for the impairments in the system.
The VASBEAM patent pending antenna testing system (ATS) – ATS7308 delivers accurate complex signals by providing accurate control over the amplitude and phase characteristics of the individual ports. Accompanied by a comprehensive user interface, the ATS unit allows users to easily condition the signals at the ATS unit for numerous antenna array configurations and applications.
Following is the functional diagram for the Antenna Testing Sub-system (ATS) and visual representation of the ATS BOX.
Accurate determination of the amplitude and phase of stimuluses during measurements of an antenna array is difficult to achieve. Errors in the amplitude and phase result in pointing errors and an increase in the sidelobe levels.
At VASBEAM, we developed an antenna testing device (VASATS) to enable accurate measurements of the antenna array. The device enables calibration of the complex signals applied to each of the antenna element of the array, enabling accurate evaluation of the antenna pattern.
Key Features:
- Measurement up to 8 antenna elements with a single unit
- Capable to measure large antenna arrays by combining multiple devices
- Calibrated phase over 360 degrees
- Calibration of the amplitude to assure the correct determination of the amplitude values
- Comprehensive user interface to program and configure the device
- External 12V charger to power the device
- USB interface
The antenna array testing device and user interface are shown in figures below
