SNAA378 January   2023 LMX1204

 

  1.   Abstract
  2.   Trademarks
  3. 1Introduction
  4. 2Test Setup
  5. 3Measurement Results
    1. 3.1 Input/Output Return Loss
    2. 3.2 Group Delay
    3. 3.3 Phase Error Within One LMX1204 Device
    4. 3.4 Phase Error Across all LMX1204 Channels
  6. 4Conclusion
  7. 5References

2 Test Setup

The test setup uses a Network Analyzer to accurately measure the phase response through the distribution channels. Each port is calibrated to eliminate the contribution of the input source cable. The frequency range is set to 4 GHz to 8 GHz. The maximum frequency was limited by the upper frequency limit of the network analyzer. Figure 2-1 illustrates the test setup.

Figure 2-1 Cascaded LMX1204 Test Setup