With the AIAD-X+ radio field emulation, tests can be carried out in the range from 500 MHz to 8000 MHz. Ring system with X (number of ports selectable) coupled inputs and outputs through 190 dB (95 dB, 122 dB possible) attenuators and 2 output connections per port. The core of the radio field simulation consists of a fully meshed network. This enables connections from RF ports to all other RF ports via separate signal paths. Programmable attenuators in each path emulate the signal attenuation to any neighbouring cells.
Modern radio technologies such as IoT, TETRA, smart metering, MIMO, car-to-car, military communication and much more. always require new test solutions. Not so much the frequency range, but the classic structure in mobile communication from the transmitter side to the receiver side has been cancelled. Modern communication takes place not only vertically, but also horizontally. This enables a direct connection between different end devices without a network infrastructure. This means that applications, products or end devices of this type sometimes create their own networks, extend the network or forward information from neighbouring network participants.
The AIAD (Air Interface Adapter) can be used to reproduce any transmission situations, conditions or problem cases in the laboratory. This is possible because we do not operate the radio “over-the-air”, but exclusively by cable. All propagation possibilities and models are simulated in a network of cables, filters, splitters/combiners and attenuators etc. in the AIAD. This brings reality into the laboratory or test room. For the test objects, it really does look as if they are in a real radio environment.
Advantages
// Any application, situation and/or problem case can be simulated in the laboratory.
// Scalable number of participants (ports) and configuration possible.
// Field tests are reduced to a minimum – this shortens test times.
// Even wireless devices with extreme transmission power can be connected directly to the AIAD solution.
// It is easy to attenuate signal levels below the sensitivity threshold of the UE.
// Independently reproducible results.
// Extremely wide frequency range from 50 – 8000 MHz (other frequencies on request).
// Wireless devices without RF connection can be easily accommodated in shielded boxes. These are available on a customised basis.
(Image may differ from the original.)
