Category: Hardware
Product Number: ADRV9004
Hi, I am seeing significant RSSI variation vs LO frequency in ADRV9004 evaluation board (30MHz to 3GHz version). I am keeping the input power fixed at -40dBm at the RF connector and hardware gain fixed at 34. I am using IIO Oscope v0.18. Can you help me understand why I am seeing such wide RSSI variation over frequency? Thank you so much.
| Hardware Gain (dB) | MXG CW Input Power (dBm) | MXG Freq (MHz) | RX1 LO Freq (MHz) | RX1 RSSI (dB) |
| 34 | -40 | 31 | 30 | 79.2 |
| 34 | -40 | 51 | 50 | 78.5 |
| 34 | -40 | 101 | 100 | 72.8 |
| 34 | -40 | 151 | 150 | 66.26 |
| 34 | -40 | 201 | 200 | 61.63 |
| 34 | -40 | 251 | 250 | 56.79 |
| 34 | -40 | 301 | 300 | 53.82 |
| 34 | -40 | 351 | 350 | 51.57 |
| 34 | -40 | 401 | 400 | 49.26 |
| 34 | -40 | 451 | 450 | 46.86 |
| 34 | -40 | 501 | 500 | 46.58 |
| 34 | -40 | 551 | 550 | 45.22 |
| 34 | -40 | 601 | 600 | 43.44 |
| 34 | -40 | 651 | 650 | 42.21 |
| 34 | -40 | 701 | 700 | 41.68 |
| 34 | -40 | 751 | 750 | 40.8 |
| 34 | -40 | 801 | 800 | 39.83 |
| 34 | -40 | 851 | 850 | 39.25 |
| 34 | -40 | 901 | 900 | 38.99 |
| 34 | -40 | 951 | 950 | 38.39 |
| 34 | -40 | 1001 | 1000 | 37.93 |
| 34 | -40 | 1051 | 1050 | 37.88 |
| 34 | -40 | 1101 | 1100 | 37.53 |
| 34 | -40 | 1151 | 1150 | 37.26 |
| 34 | -40 | 1201 | 1200 | 37.28 |
| 34 | -40 | 1251 | 1250 | 37.21 |
| 34 | -40 | 1301 | 1300 | 36.95 |
| 34 | -40 | 1351 | 1350 | 37.15 |
| 34 | -40 | 1401 | 1400 | 37.17 |
| 34 | -40 | 1451 | 1450 | 36.95 |
| 34 | -40 | 1501 | 1500 | 36.94 |
| 34 | -40 | 1551 | 1550 | 37.9 |
| 34 | -40 | 1601 | 1600 | 36.89 |
| 34 | -40 | 1651 | 1650 | 36.42 |
| 34 | -40 | 1701 | 1700 | 36.59 |
| 34 | -40 | 1751 | 1750 | 36.3 |
| 34 | -40 | 1801 | 1800 | 35.47 |
| 34 | -40 | 1851 | 1850 | 35.32 |
| 34 | -40 | 1901 | 1900 | 35.2 |
| 34 | -40 | 1951 | 1950 | 34.32 |
| 34 | -40 | 2001 | 2000 | 33.78 |
| 34 | -40 | 2051 | 2050 | 33.47 |
| 34 | -40 | 2101 | 2100 | 33.2 |
| 34 | -40 | 2151 | 2150 | 32.62 |
| 34 | -40 | 2201 | 2200 | 32.25 |
| 34 | -40 | 2251 | 2250 | 32.13 |
| 34 | -40 | 2301 | 2300 | 31.9 |
| 34 | -40 | 2351 | 2350 | 31.53 |
| 34 | -40 | 2401 | 2400 | 31.5 |
| 34 | -40 | 2451 | 2450 | 31.49 |
| 34 | -40 | 2501 | 2500 | 31.26 |
