D4000 RF Downconverter / Tuner
Designed for mobile operators testing 5G FR2 mmWave deployments, system integrators extending existing test equipment, and RF engineers measuring 5G NR signals, the thinkRF D4000 is a 24–40 GHz RF downconverter/tuner that extends existing spectrum analyzers and receivers into the 5G FR2 mmWave frequency range, providing 500 MHz of real-time bandwidth through a single IF output at 1.536 GHz. Built with a compact, fanless design, integrated local oscillators, and pre-select filtering, it connects to any spectrum analyzer or software-defined radio via standard SCPI control over Ethernet – no external synthesizers required. Multiple units can be clock-synchronized for wideband signal capture, protecting existing infrastructure investments.
Key capabilities
- Extend existing spectrum analyzers and receivers to 5G FR2 mmWave frequencies
- Cover the full 5G FR2 mmWave range from 24 to 40 GHz
- Capture 5G mmWave signals with 500 MHz real-time bandwidth
- Output a single IF at 1.536 GHz for direct connection to existing analyzers
- Eliminate out-of-band interference with built-in pre-select filtering
- Tune to any frequency between 24 and 40 GHz with 100 kHz resolution
- Remove the need for external synthesizers with built-in local oscillators
- Synchronize multiple units via 10 MHz reference for compound signal monitoring
- Deploy in open-environment spectrum monitoring or controlled lab and production testing settings
- Extend coverage to 5G FR1 bands using complementary thinkRF products
- Control via SCPI over Ethernet or from a connected spectrum analyzer
How it works
- Connects between the antenna and existing spectrum analyzer or receiver via IF output at 1.536 GHz
- Tunes to the desired 5G mmWave frequency between 24 and 40 GHz
- Pre-select filters reject out-of-band signals before downconversion
- Built-in local oscillators translate the mmWave signal to 1.536 GHz IF
- Existing analyzer processes the IF output using its current software and test setup
- Multiple units synchronize via 10 MHz clock reference for wideband capture
Who it’s for
- Mobile operators testing 5G FR2 mmWave deployments
- System integrators extending existing lab and field test equipment
- RF engineers measuring 5G NR signals in FR2 frequency bands
- Manufacturing test teams validating 5G mmWave devices
Extend your RF test equipment to 5G mmWave economically
Extend your Frequency and Bandwidth Performance with the thinkRF D4000 RF Downconverter / Tuner
As wireless communications push into 5G mmWave bands, organizations must adapt their existing RF test equipment to meet new frequency requirements – without replacing costly lab, field, and manufacturing infrastructure.
The thinkRF D4000 RF Downconverter / Tuner enables organizations to retain existing field, lab, and manufacturing test equipment and extend the life of their investment. By adding 5G FR2 mmWave coverage from 24 to 40 GHz to existing spectrum analyzers and receivers, the thinkRF D4000 reduces time to market and lowers the cost of measuring 5G mmWave signals.
In addition to its wide frequency range and bandwidth performance, the thinkRF D4000 includes several features that make it an ideal component for 5G mmWave signal monitoring.
Wideband coverage from 24 to 40 GHz with up to 500 MHz real-time instantaneous bandwidth – covering the full 5G FR2 mmWave range.
Pre-select filtering eliminates out-of-band signals and enables spurious mitigation before downconversion – protecting analysis accuracy across the full mmWave range.
Single IF output at 1.536 GHz enables direct, easy integration with existing spectrum analyzers or receivers – no additional conversion hardware required.
Built-in local oscillators eliminate the need for external synthesizers, reducing system complexity and cost.
Extensible to lower 5G FR1 bands using complementary thinkRF receiver products – one ecosystem for the full 5G frequency range
SWaP Compact Form Factor
Measuring 19.3 cm x 19.3 cm x 4.1cm (7.6″ x 7.6″ x 1.6″) and weighing only 1.7 kg (3.7 lbs), the thinkRF D4000 RF Downconverter / Tuner features a compact design that makes it portable, versatile, and easy to use for 5G analysis in any deployment scenario without adding significant size, weight, and power (SWaP) requirements.
Open APIs Standard Configuration Interface
The thinkRF D4000 RF Downconverter / Tuner supports the following interface options:
● LibTRF C/C++ and Python APIs – open APIs for programmatic control and custom application development
● SCPI over Ethernet/Telnet – standard configuration protocol for command-line instrument control
● Spectrum analyzer software over LAN – configuration directly from a connected spectrum analyzer
Open Platform
The thinkRF D4000 is an open platform designed to work seamlessly with third-party test equipment, including RF spectrum analyzers, software-defined radios, and custom interfaces.
Control is handled via standard SCPI commands over Ethernet, allowing the thinkRF D4000 to be operated through an existing spectrum analyzer or any standard PC – no proprietary software required.
Multi-Unit Synchronization Capability
The thinkRF D4000 RF Downconverter / Tuner includes 10 MHz input and output clock references to support clock synchronization with external modules. This allows the ability to run multiple units in parallel to coordinate a compound signal monitoring system, particularly for wideband signal monitoring and capture.
APIs & Protocols Proven Integrations
The thinkRF D4000 supports integration with custom applications through two interface options:
● SCPI over Ethernet – standard instrument control compatibility with existing spectrum analyzer software and test automation frameworks
● LibTRF C/C++ and Python APIs – direct programmatic control for custom application development
Best Price Performance Ratio on The Market
Downconverters are one of the most economical methods for extending the frequency performance of existing RF signal analysis systems. The thinkRF D4000 enables organizations to avoid the cost of replacing existing analyzers, reduce time to market, and gain immediate access to 5G FR2 mmWave measurement capability.
The thinkRF D4000 translates RF signals in the 24–40 GHz frequency range with up to 500 MHz real-time bandwidth – enabling capture and analysis of mmWave 5G signals using existing downstream analyzer hardware and software.
| Maintenance Plan | Plan for per unit per year |
| CERT | Calibration Certificate and Traceability Statement |
Ready to Demo The thinkRF D4000?
The thinkRF D4000 extends your existing RF test equipment to 5G FR2 mmWave frequencies from 24 to 40 GHz – economically and without replacing your current infrastructure.