The developed system works in an automatic mode and supports signal generation measurements up to 10GHz. The system provides accurate and repeatable measurements and reduces the test time by 10 times.

The user can control the output signals, analyze, and store the received signals from the DUT with 4 RX inputs, 4 TX outputs and 4 combined TX inputs / RX outputs. The DUT TX paths work only in pulse mode, where RX operates both in pulse and continuous modes. All channels have programmable phase shifters, amplifiers (RX-LNA) and attenuators controlled through the RS-485 port according to the customer-specific programs.

The system is based on the NI PXI platform and uses software developed in the NI LabVIEW graphical programming environment, which makes the system more flexible allowing to modify the system under customer requirements.

Measurements :

1. TX output pulse power
2. TX output pulse rise/fall time
3. Amplitude-frequency response (flatness) for TX/RX path
4. RX output pulse amplitude flatness
5. Delay of the front edge of the output pulse vs. the front edge of the input RF pulse
6. Delay Instability of the output pulse front edge vs. the front edge of the input RF pulse for TX and RX paths
7. Permissible output signal phase jitter in TX/RX path in 0,5 sec
8. TX path’s power spectral density between the pulse pause intervals
9. Electrical length of the TX/RX path
10. Transmission efficiency
11. Noise Figure for RX channel
12. RX path transfer ratio
13. The upper limit of linearity of the receive path
14. Instability of the receiver path gain in 0,1 sec
15. Programmable phase shifter accuracy
16. Programmable attenuator accuracy

Details :

• Author : yeatAdmin
• Category : RF Systems Test
• Date : May 18, 2015