1–18GHz Wideband RF Downconverter Module
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1–18 GHz Wideband RF Downconverter Module — Product Description
The 1–18 GHz wideband RF downconverter module is a high-performance RF receive front-end (TR module) featuring a single-channel architecture with two software-selectable IF output modes. It provides fixed IF center frequencies of 1.2 GHz (950–1450 MHz, 500 MHz bandwidth) and 1.8 GHz (1300–2300 MHz, 1 GHz bandwidth).
The module delivers a flat gain of 50 dB ±1 dB, a noise figure ≤ 6 dB, SFDR ≥ 60 dBc, image rejection ≥ 60 dBc, and generated spurious ≤ -50 dBc, offering superior linearity compared to conventional RF front-end components.
It integrates independent 6-bit digital RF and IF attenuators with 0.5 dB step size (0–20 dB RF / 0–25 dB IF), dual Ethernet and RS-422 control interfaces, a switchable internal/external 100 MHz reference clock, and real-time operating-status monitoring. Housed in a compact 100 × 100 × 20 mm enclosure weighing ≤ 0.75 kg, the unit meets IP68 sealing, operates across -30 °C to +65 °C, and incorporates an anti-vibration mechanical design—making it an ideal core front-end for microwave test equipment and field RF signal acquisition.
Key Specifications
| Parameter | Specification |
|---|---|
| Operating Frequency | 1–18 GHz |
| IF Output Mode 1 (Center Frequency) | 1.2 GHz (950–1450 MHz) |
| IF Mode 1 · 3 dB Bandwidth | 500 MHz |
| IF Mode 1 · Anti-Aliasing Rejection @ 650 MHz | ≥ 60 dB |
| IF Mode 1 · Anti-Aliasing Rejection @ 1750 MHz | ≥ 60 dB |
| IF Output Mode 2 (Center Frequency) | 1.8 GHz |
| IF Mode 2 · 3 dB Bandwidth | 1 GHz (1300–2300 MHz) |
| IF Mode 2 · Anti-Aliasing Rejection @ 1100 MHz | ≥ 60 dB |
| IF Mode 2 · Anti-Aliasing Rejection @ 2500 MHz | ≥ 60 dB |
| RF-to-IF Gain (RF Att = 0 dB, IF Att = 0 dB) | 50 dB ±1 dB |
| Output P1dB | +25 dBm ±1 dB |
| Input 1 dB Compression Point (LNA) | ≥ -15 dBm |
| RF Gain Flatness | ±2 dB |
| Digital RF Attenuation (6-bit, 0.5 dB step) | 0–20 dB |
| Digital IF Attenuation (6-bit, 0.5 dB step) | 0–25 dB |
| SFDR | ≥ 60 dBc |
| IF Output Filter Flatness | ±1.5 dB |
| Frequency Lock Time | ≤ 250 µs |
| Input Reference Clock | 100 MHz |
| Input Reference Clock Power | ≥ 0 dBm |
| Internal Reference Phase Noise @ 1 kHz | < -150 dBc/Hz |
| Output Reference Clock | 100 MHz |
| Output Reference Clock Power | ≥ 5 dBm |
| Frequency Step | 1 MHz |
| Noise Figure | ≤ 6 dB |
| Generated Spurious | ≤ -50 dBc |
| Phase Noise | @10 kHz: < -80 dBc/Hz @100 kHz: < -85 dBc/Hz @1 MHz: < -100 dBc/Hz |
| Frequency Accuracy | ±1 ppm |
| Frequency Stability | ±1 ppm |
| Input Power Survivability | ≥ +18 dBm |
| Image Rejection | ≥ 60 dBc |
| Operating Voltage | 12–14 V |
| Operating Current | ≤ 3 A |
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