Receiver-side translation
Moves microwave energy into an IF or analysis band that is easier to process downstream.
LINEAR DOWN-CONVERTERS
Linear Receiver-Side Frequency Translation for Microwave Systems
Microsource linear down-converters translate microwave energy into a lower-frequency IF or analysis band for receiver, monitoring, and test paths.
Current wide-band coverage includes datasheet-backed 2.0-18.0 GHz hardware such as G-WBRX-02-18-000, built around a 3.10-4.10 GHz IF output and 1.0 GHz instantaneous bandwidth.
Product overview
Operational overview
What a down-converter does
Moves received microwave energy into a lower-frequency IF or analysis band where the rest of the chain can process it more effectively.
How it is used
Most often in radar, SIGINT, monitoring, or receive-side architectures where the translated output needs to remain clean and useful to the downstream stages.
Why it is used
- Makes high-frequency receive paths easier to analyze or digitize
- Supports receiver architectures that depend on a practical IF plan
- Works best when gain, bandwidth, and spectral cleanliness are defined together
Signal translation
Why use a down-converter
Down-conversion moves a microwave signal into a band where it can be analyzed, filtered, digitized, or otherwise processed more effectively.
Translates higher-frequency input into a practical IF or analysis band
Supports receiver, monitoring, and measurement chains
Can be paired with filtering or gain conditioning as needed
Works best when the surrounding signal plan is defined early
Actual frequency coverage and performance expectations depend on the approved band plan and configuration.
Capabilities
What a down-converter stage should handle
The role of this page is to help engineers and stakeholders understand how the receiver path is translated and why that matters.
Spectral cleanliness
A controlled translation stage helps preserve the usefulness of the received signal.
Bandwidth and interface fit
Can be matched to the channel plan, gain structure, and mechanical envelope of the receiver system.
Subsystem integration
Often works best as part of a packaged receiver or monitoring assembly rather than as a loose module.
Define the receiver objective first, then choose the down-converter to support that objective cleanly.
Applications
Where down-converters are used
Down-converters are natural fits for receiver and monitoring applications that need translated output in a manageable band.
Radar receiver chains
Translates high-frequency returns into an IF path where further processing can happen.
Spectrum monitoring
Supports analysis systems that need to move signals into a band suited for detection or digitization.
EW and SIGINT
Useful in collection and analysis paths where broad coverage and signal integrity matter.
Microwave test systems
Helps bench and lab setups translate signals into a more convenient analysis band.
Representative performance
Datasheet-backed example: G-WBRX-02-18-000
These values are taken from current released collateral for the wide-band G-WBRX-02-18-000 platform. They give engineers a concrete reference point for RF coverage, translated IF behavior, gain, and receiver-side signal quality.
| Parameter | Representative value |
|---|---|
| Signal plan | |
| RF input frequency | 2.0-18.0 GHz overall; split as 2.0-12.35 GHz and 12.25-18.0 GHz |
| IF output frequency | 3.10-4.10 GHz |
| Channel bandwidth (IBW) | 1.0 GHz |
| Nominal RF input level | -40 dBm |
| Gain and cleanliness | |
| Conversion gain | 40 dB |
| Attenuation range | -60 to 0 dB in 0.5 dB steps |
| Attenuation settling time | 1 us to within 0.5 dB |
| Channel bandwidth flatness | 6.0 dB pk-pk |
| Noise figure | 12 dB |
| IF output spurious | -60 dBc |
| IF output IMD | -50 dBc at POUT = -10 dBm, 1 MHz carrier spacing |
| IF output P-1dB | 10 dBm |
| Residual phase noise | -130 dBc/Hz at 100 MHz offset |
| Interfaces and environment | |
| LO drives | LO1: 12.75-13.35 GHz, LO2: 7.5-10.5 GHz, both at -2 to +2 dBm |
| Input / output SWR | 2.5:1 RF/IF, 2.0:1 on LO ports |
| Input voltage / current | 16-40 V, 0.45 A typical at +28 V |
| Operating temperature | -40 to +85 C |
Values shown for G-WBRX-02-18-000 hardware. Final band plan, LO strategy, attenuation setting, and packaging details should still be confirmed against the approved configuration.
Hardware
Receiver-side hardware context
This page now reflects the current wide-band hardware rather than a generic receiver placeholder. The package shown here is representative of the present G-WBRX-02-18-000 mechanical approach.
- RF and IF interfaces use SMA female connections in the released housing example.
- Mechanical envelope is documented at 5.80 x 2.00 x 0.40 inches for the MIC module housing.
- Gain and shielding are part of a packaged translation path, not just a loose mixer block.
- Acceptance setup should still validate spurious, IMD, and noise figure in the actual receive architecture.
System integration
How down-converters fit into the receive chain
Down-converters sit between the incoming microwave path and the lower-frequency analysis or receiver stages. Their value comes from making the rest of the receiver easier to use without losing the signal’s usefulness.
- Choose the IF target based on what the downstream analysis or digitizer needs.
- Evaluate the converter with the filter and receiver stages it is protecting or feeding.
- Use the receiver mission to drive gain, cleanliness, and package decisions.
Representative down-conversion context
Packaging
Integration notes
The package should follow the receiver architecture, control plan, and mechanical constraints of the platform.
- Input and IF interface definition
- Channel plan and gain structure
- Environmental and screening requirements
- Verification criteria for translated output
The best down-converter is the one that makes the rest of the receiver easier to use.
Related solutions
Complete the receive chain
Down-converters usually appear alongside sources, filters, and integrated subsystem packaging.
Linear Frequency Converters
Broader conversion portfolio that includes both transmit and receive use cases.
YIG Tuned Filters
Useful when receiver-side selectivity or interference suppression is required.
Custom Integrated Microwave Assemblies
Custom packaging for receiver-side translation and conditioning paths.
Next step
Need receiver-side frequency translation?
Share the input band, IF target, and integration constraints so Microsource can evaluate the down-conversion path in context.