50W/100W 4–6GHz Software Defined Radio RF Power Amplifier

This 4000-6000MHz all-in-one SDR RF module integrates built-in signal generator and 50W power amplifier channel, providing 50~60W saturated output power with ±2dB gain flatness and standard 50Ω output impedance matching.

It operates with wide DC supply of 24~32V (nominal 28V), drawing typical 8A current at full 50W output and featuring 35% power added efficiency. Harmonic performance reaches ≤-12dBc at 50W output while spurious suppression is ≤-40dBc under saturation, and the module continuously withstands 3:1 full-phase load VSWR. Equipped with RS422 serial control at 115200 baud rate, it supports four modulation waveforms: white noise, comb spectrum, OFDM and LFM, with adjustable center frequency and five bandwidth options (10/20/50/100/200MHz). Built-in thermal protection automatically cuts off power at 85℃±5℃. It adopts SMA female RF input, N-type female RF output and shared D-Sub7W2 mixed connector for power and communication. Measuring 170×94×26.5mm and weighing 1.5kg, it works stably from -30℃ to +55℃ and is widely applied in microwave RF jamming, EMC testing and wideband microwave signal simulation systems.

4000-6000MHz 50W SDR Module

Electrical Specifications (@ +28.0VDC, 25°C, 50Ω)

Communication Protocol

This board uses an RS422 asynchronous serial communication interface, with a baud rate of 115200, 8-bit no parity, and data is transmitted in hexadecimal format. There is only one command: the parameter control command.

Parameter Control Command:

Send: 7E 7E 01 00 08 a1 a2 …a8 0A 0D

Description: 7E 7E: Represents the frame header, fixed as 7E 7E.

01: Represents the command type, where 01 indicates this instruction is a parameter control command.

00 08: Byte length of the data area, this instruction has a total of 8 bytes from a1 to a8, so fill in 0008 here.

Data area a1~a8 description:

a1: Signal modulation type, 0: white noise, 1: comb spectrum, 2: OFDM, 3: LFM;

a2~a3: Center frequency of the noise signal, expressed as a 16-bit hexadecimal unsigned number. For example, to set the center frequency to 1000 MHz, fill in 0x03E8 here;

a4: Noise signal bandwidth control, represented by an 8-bit hexadecimal unsigned number.

0: 10M; 1: 20M; 2: 50M; 3: 100M; 4: 200M;

a5~a8: Reserved, all fixed filled with 0x00;

0A 0D: Indicates the frame tail, fixed as 0A 0D.

After this parameter control command is issued, if the product correctly receives and successfully executes it, it will return a control success feedback command: 7E 7E 01 00 01 FF 0A 0D. If this feedback or any other feedback is not received, it indicates that this control command has failed.

Example 1: Set the product modulation mode to white noise, with the noise signal center frequency at 1500MHz and signal bandwidth at 200MHz. The host sends: 7E 7E 01 00 08 00 05 DC 03 00 00 00 00 0A 0D. If the control is successful, the product returns: 7E 7E 01 00 01 FF 0A 0D.

Example 2: Set the product modulation mode to comb spectrum, with the noise signal center frequency at 2000MHz and signal bandwidth at 100MHz. The host sends: 7E 7E 01 00 08 00 07 D0 01 00 00 00 00 0A 0D. If the control is successful, the product returns: 7E 7E 01 00 01 FF 0A 0D.

Default Parameters

After powering on the board, it will by default output one signal:

Signal modulation mode: white noise mode;

Signal output center frequency: 4000 MHz;

Signal output bandwidth: 100 MHz;