1. Overview
This document gives the RF test report of Zencheer SDR-B1 SDR platform, which can be used by customers to evaluate whether SDR-B1 can meet their own needs. SDR-B1 is implemented using Xilinx Zynq XC7Z045 and ADI AD9361/AD9363.
2. Test Equipments
- NI PCIe-5644R
- GWINSTEK GPD-3303S
3. Test Software
- Matlab R2024a (ADALM-PLUTO Radio Support from Communications Toolbox)
- NI InstrumentStudio
- NI WLAN Analysis Toolkit
4. Test Items
Carrier frequency error, phase noise, non-harmonic spurs, transmit power, EVM and receiver dynamic range.
5. Test Results
(1) Carrier Frequency Error
| Set Frequency | Actual Frequency | Frequency Error |
| 500MHz | 500.000777MHz | 1.55ppm |
| 1000MHz | 1.000001555GHz | 1.55ppm |
| 1500MHz | 1.500002328GHz | 1.55ppm |
| 2000MHz | 2.000003100GHz | 1.55ppm |
| 2500MHz | 2.500003869GHz | 1.55ppm |
| 3000MHz | 3.000004639GHz | 1.55ppm |
| 3500MHz | 3.500005404GHz | 1.54ppm |
(2) Phase Noise
Carrier frequency=500MHz, txgain=0
| Frequency Offset | Phase Noise |
| 1kHz | -67dBc/Hz |
| 10KHz | -109dBc/Hz |
| 100KHz | -118dBc/Hz |
| 1MHz | -130dBc/Hz |
Carrier frequency=1000MHz, txgain=0
| Frequency Offset | Phase Noise |
| 1kHz | -63dBc/Hz |
| 10KHz | -105dBc/Hz |
| 100KHz | -111dBc/Hz |
| 1MHz | -125dBc/Hz |
Carrier frequency=1500MHz, txgain=0
| Frequency Offset | Phase Noise |
| 1kHz | -62dBc/Hz |
| 10KHz | -101dBc/Hz |
| 100KHz | -105dBc/Hz |
| 1MHz | -120dBc/Hz |
Carrier frequency=2000MHz, txgain=0
| Frequency Offset | Phase Noise |
| 1kHz | -56dBc/Hz |
| 10KHz | -99dBc/Hz |
| 100KHz | -105dBc/Hz |
| 1MHz | -120dBc/Hz |
Carrier frequency=2500MHz, txgain=0
| Frequency Offset | Phase Noise |
| 1kHz | -58dBc/Hz |
| 10KHz | -99dBc/Hz |
| 100KHz | -102dBc/Hz |
| 1MHz | -117dBc/Hz |
Carrier frequency=3000MHz, txgain=0
| Frequency Offset | Phase Noise |
| 1kHz | -48dBc/Hz |
| 10KHz | -92dBc/Hz |
| 100KHz | -99dBc/Hz |
| 1MHz | -115dBc/Hz |
Carrier frequency=3500MHz, txgain=0
| Frequency Offset | Phase Noise |
| 1kHz | -47dBc/Hz |
| 10KHz | -89dBc/Hz |
| 100KHz | -102dBc/Hz |
| 1MHz | -116dBc/Hz |
(3) Non-harmonic Spurs
| Carrier Frequency | RBW | SPAN | Amplitude |
| 1000MHz | 10KHz | 700MHz | -81dBc Max |
| 1500MHz | 10KHz | 700MHz | -85dBc Max |
| 2000MHz | 10KHz | 700MHz | -84dBc Max |
| 2500MHz | 10KHz | 700MHz | -79dBc Max |
| 3000MHz | 10KHz | 700MHz | -78dBc Max |
| 1000MHz | 100Hz | 10MHz | -110dBc Min |
| 2000MHz | 100Hz | 10MHz | -107dBc Min |
(4) Transmmit Power and EVM
IEEE 802.11ac MCS8(256QAM) waveform, 20MHz channel bandwidth
| Carrier Frequency | txgain | Tansmmit Power | EVM |
| 500MHz | -5 | -7.7dBm | -47dB |
| 1000MHz | -5 | -9.0dBm | -45dB |
| 1500MHz | -5 | -9.3dBm | -38dB |
| 2000MHz | 0 | -5.4dBm | -41dB |
| 2500MHz | 0 | -5.4dBm | -36dB |
| 3000MHz | 0 | -6.5dBm | -32dB |
| 3500MHz | 0 | -8.4dBm | -35dB |
IEEE 802.11ac MCS8(256QAM) waveform, 40MHz channel bandwidth
| Frequeny Error | txgain | Tansmmit Power | EVM |
| 500MHz | -5 | -9.3dBm | -45dB |
| 1000MHz | -5 | -9.6dBm | -43dB |
| 1500MHz | -5 | -10.2dBm | -37dB |
| 2000MHz | 0 | -6.4dBm | -37dB |
| 2500MHz | 0 | -6.4dBm | -36dB |
| 3000MHz | 0 | -7.8dBm | -33dB |
| 3500MHz | 0 | -9.8dBm | -36dB |
(5) Rx Dynamic Range
Test Project: Image Transmission and Reception Using 802.11 Waveform and SDR
Test method: self-loop test, use attenuator to adjust signal strength
Carrier frequency: 2GHz
Transmmit Power: -5dBm
Modulation scheme: BPSK, 3/4 code rate
| Attenuation (dB) | Signal Strength (dBm) | rxgain | Test Result (BER) |
| 0 | -5 | 0 | 0 |
| 30 | -35 | 20 | 0 |
| 60 | -65 | 50 | 0 |
| 70 | -75 | 60 | 0 |