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Test Solutions for Mobile and Wireless Communication

Cost-reduction in the design and verification phase

Devices for mobile communication, such as mobile phones and wireless networks have become articles of daily use. The complexity of these devices grows constantly, similarly to the corresponding radio transmission standards. Components of mobile communications are also increasingly used in automobiles to increase driving comfort and safety. This trend requires extensive testing of new developed devices regarding their compatibility with various wireless standards.

 

Emulation of Air Interfaces

Testing communication systems in the field necessary but cumbersome and expensive. Whenever possible the testing has to be transferred to the laboratory environment, in order to achieve reproducible and reliable results. Emulating the propagation of the signals over the air can be achieved by using air interface emulation devices connected to the communication systems in conducted mode, modifying the physical channel on RF level: amplitude, phase, delay. BNT offers various models, targeting typical situations even with more than two communication terminals involved (hand-over testing, V2X scenario testing).




QATT – Programmable Attenuators

With the aid of the QATT devices, field strength scenarios with four independent RF channels are possible.The QATT device is usable in cellular and broadcast applications up to 4 GHz. For wireless networks WLAN 802.11 a / h, b, g, n, p, Bluetooth, ZigBee, 5G and radar applications the device QATT-7G is available.

 

QATT

QATT-7G

Frequency range

100 kHz … 4000 MHz

100 kHz … 7000 MHz

Number of channels

4

4

Insertion Loss

6 dB, f ≤ 1 GHz

8 dB, f ≤ 5 GHz

Setting range

0 … 100 dB

0 … 95.25 dB

Resolution

0.5 dB

0.25 dB

Port load capability

+27 dBm

+24 dBm

LAN remote interface

USB remote interface

Web-interface

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QATT

Programmable 4-Channel Step Attenuator

Attenuation range 0 ... 100,0 dB

Detail

QATT-7G

Programmable 4-Channel Step Attenuator

Attenuation range 0 ... 95.25 dB

Detail



QDLL – Quad Delay Line

The device QDLL is a 4-channel programmable delay line for the frequency range 250 MHz ... 4000 MHz. Each RF channel provides a setting range of 0 ... 1700 ps and is adjustable in 5 ps steps.

 

QDLL

Frequency range

250 MHz … 4000 MHz

Number of channels

4

Insertion Loss

6.5 dB

Setting range

0 … 1700 ps per channel

Resolution

5 ps

Port load capability

+33 dBm

LAN remote interface

USB remote interface

Web-interface

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QDLL

Programmable 4 Channel Delay Line

250 ... 4000 MHz Delay range 0 ... 1700 ps step size 5 ps

Detail



AIE-4X4LR – Air interface Emulator

The AIE-4X4LR is a 4 to 4 port radio field simulation for the generation of handover test scenarios.

 

AIE-4X4LR

Frequency range

500 MHz…9000 MHz

Number of channels

4 x 4 (4 Inputs, 4 Outputs)

Insertion loss

21 dB @ 0 dB ATT / @ 2 GHz

Attenuation range

0 … 63.5 dB (0 ... 127.0 dB)

Attenuation resolution

0.25 dB

Port load capacity

+33 dBm

LAN interface

USB interface

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AIE-4X4LR

4X4 Channel Air Interface Emulator, 500…9000 MHz

step size 0.25 dB 500 ... 9000 MHz attenuation range 0 up to 127.0 dB

Detail



AIE-W5LR – 5 Port Car-to-X Emulator

The AIE-W5LR is a radio field simulator for Car-to-X applications. Each RF port is designed for bidirectional operation and is connected to each of the remaining ports via adjustable attenuators. The device is designed for operation from 500 MHz up to 9000 MHz and thus also suitable for the WLAN standard IEE 802.11p as well as Wi-Fi 6E 802.11ax in V2X and V2V applications.

 

AIE-W5LR

Frequency range

500 MHz … 9000 MHz

Number of channels

5

Insertion loss

23 dB @ 0 dB ATT, 2 GHz

Atennuation range

0 … 127.0 dB

Attenuation resolution

0.25 dB

Port load capacity

+33 dBm

LAN interface

USB interface

Trigger input

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AIE-W5LR

5 Port Air Interface Emulator, 500 bis 9000 MHz

step size 0.25 dB 500 ... 9000 MHz attenuation range 0 up to 127.0 dB

Detail


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Frequency Range

For universal use, the operating bandwidth should be as large as possible. The system should be suitable for all components of e.g. such as GSM800, GSM900, GSM1800, GSM1900 UMTS, LTE.

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Port Load Capability

The load capacity of the HF ports should be adapted to the connection of mobile phones and wireless network devices.

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Accuracy of Adjustment

Reproducible results will ensure by fine resolution with high accuracy in adjustment.

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Port-Decoupling

High decoupling properties of the RF ports ensure a sufficient suppression of adjacent test pieces to avoid mutual interference.

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Remote Control

Via remote control interfaces, such as Ethernet LAN or USB, the radio field simulations can be integrated into automatic test sequences. Many devices are additionally equipped with web interfaces, which provide a location-independent control of the devices without additional software on the user's side.

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Robust Design

In production and development, high quality and availability of the RF signal is immeasurably. The components comply with these requirements and are designed for longstanding operation.

Latest modification: 26.04.2023