Filter response
The following transmitter and receiver FIR filters were designed using the AD9361 Filter Design Wizard (for more information, consult the MATLAB Filter Design Wizard for AD9361 wiki page).
The response was measured on an AD-FMCOMMS3-EBZ using the bare-metal AD9361 software running in Linux user space, a spectrum analyzer and the ADI VisualAnalog software.
Updated on October 20, 2015
Description |
Filter settings |
TX Filter response |
TX & RX Filter response |
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Sampl. Freq.: 232748 Hz LO Freq.: 70 MHz DDS Freq.: 70000 Hz DDS Scale: 0.250 for each tone* DDS Phase: 90 degrees for I tones, 0 degrees for Q tones* |
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Sampl. Freq.: 245760 Hz LO Freq.: 2415 MHz DDS Freq.: 70000 Hz DDS Scale: 0.250 for each tone* DDS Phase: 90 degrees for I tones, 0 degrees for Q tones* |
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Sampl. Freq.: 256000 Hz LO Freq.: 460 MHz DDS Freq.: 70000 Hz DDS Scale: 0.250 for each tone* DDS Phase: 90 degrees for I tones, 0 degrees for Q tones* |
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Sampl. Freq.: 15.360 MHz LO Freq.: 806 MHz DDS Freq.: 4 MHz DDS Scale: 0.250 for each tone* DDS Phase: 90 degrees for I tones, 0 degrees for Q tones* |
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Sampl. Freq.: 15.360 MHz LO Freq.: 2450 MHz DDS Freq.: 4 MHz DDS Scale: 0.250 for each tone* DDS Phase: 90 degrees for I tones, 0 degrees for Q tones* |
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Sampl. Freq.: 22 MHz LO Freq.: 2427 MHz DDS Freq.: 6 MHz DDS Scale: 0.250 for each tone* DDS Phase: 90 degrees for I tones, 0 degrees for Q tones* |
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Sampl. Freq.: 50 MHz LO Freq.: 1000 MHz DDS Freq.: 12 MHz DDS Scale: 0.250 for each tone* DDS Phase: 90 degrees for I tones, 0 degrees for Q tones* |
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Sampl. Freq.: 60 MHz LO Freq.: 4000 MHz DDS Freq.: 12 MHz DDS Scale: 0.250 for each tone* DDS Phase: 90 degrees for I tones, 0 degrees for Q tones* |
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Sampl. Freq.: 61.44 MHz LO Freq.: 6000 MHz DDS Freq.: 12 MHz DDS Scale: 0.250 for each tone* DDS Phase: 90 degrees for I tones, 0 degrees for Q tones* |
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Note
The DDS for a channel consists of two tones.