参数项	指标
工作频率	1GHz–18GHz
中频输出模式1（中心频率）	1.2GHz（覆盖950–1450MHz）
中频输出模式1 3dB带宽	500MHz
抗混叠中频滤波器抑制@650MHz（模式1）	≥60dB
抗混叠中频滤波器抑制@1750MHz（模式1）	≥60dB
中频输出模式2（中心频率）	1.8GHz
中频输出模式2 3dB带宽	1GHz（覆盖1300–2300MHz）
抗混叠中频滤波器抑制@1100MHz（模式2）	≥60dB
抗混叠中频滤波器抑制@2500MHz（模式2）	≥60dB
射频→中频增益（RF衰减=0dB，IF衰减=0dB）	50dB±1dB
输出P1dB	+25dBm±1dB
输入1dB压缩点（LNA）	≥-15dBm
射频幅度平坦度	±2dB
数字射频衰减（6位，0.5dB步进）	0–20dB
数字中频衰减（6位，0.5dB步进）	0–25dB
无杂散动态范围（SFDR）	≥60dBc
中频输出滤波器平坦度	±1.5dB
频率锁定时间	≤250μs
输入参考时钟	100MHz
输入参考时钟功率	≥0dBm
内部参考时钟相位噪声@1kHz	< -150dBc/Hz
输出参考时钟	100MHz
输出参考时钟功率	≥5dBm
频率步进	1MHz
噪声系数	≤6dB
本振/变频杂散	≤-50dBc
相位噪声	@10kHz < -80dBc/Hz @100kHz < -85dBc/Hz @1000kHz < -100dBc/Hz
频率准确度	±1ppm
频率稳定度	±1ppm
输入耐功率	≥+18dBm
镜像频率抑制	≥60dBc
工作电压	12–14V
工作电流	≤3A

商品参数

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