RF Wideband Downconverters / Receivers

These RF downconverter models, featuring breakthrough frequency and bandwidth coverage for their size and cost, are available with 3 standard or 3 optional bandwidths, covering three frequency ranges from 100 kHz to 8 GHz, 18 GHz, or 27 GHz.

Model Frequency
DC8G100 100 kHz
8 GHz
100 MHz (0 Hz IF),
40 MHz (35 MHz IF)
10 MHz (35 MHz IF)
160 MHz (0 Hz IF),
80 MHz (55 MHz IF)
10 MHz (35 MHz IF)
DC18G100 100 kHz
18 GHz
100 MHz (0 Hz IF),
40 MHz (35 MHz IF)
10 MHz (35 MHz IF)
160 MHz (0 Hz IF),
80 MHz (55 MHz IF)
10 MHz (35 MHz IF)
DC27G100 100 kHz
27 GHz
100 MHz (0 Hz IF),
40 MHz (35 MHz IF)
10 MHz (35 MHz IF)
160 MHz (0 Hz IF),
80 MHz (55 MHz IF)
10 MHz (35 MHz IF)
Wideband Downconverter: DC27G100

WDC Data Sheet

Supporting Software

USD Prices Start at: $15,400
for Digitizer + Downconverter

Request Quote

The downconverters feature bandwidths of 100 MHz (standard) or 160 MHz (optional) direct conversion (0 Hz IF) I and Q analog outputs. These wideband versions can be software configured for super-heterodyne mode with a bandwidth of either 40 MHz or 10 MHz (standard) on a single IF output centered at 35 MHz IF, or with a bandwidth of either 80 MHz (optional) on a single IF output centered at 55 MHz IF.

These wideband products are engineered for analyzing wideband digital communications - cell phone standards 3G/4G/LTE, WiFi, or general Vector Signal Analysis (VSA) applications involving broadband signals.


  • 100 kHz – 27 GHz Frequency Coverage
  • 3 Standard Selectable IF Bandwidths – 100 MHz, 40 MHz, 10 MHz
  • 3 Optional Selectable IF Bandwidths – 160 MHz, 80 MHz, 10 MHz
  • 9, 14, 18, or 21-Channel Switched Pre-Select Filter Bank
    and Pre-Amplifier
  • Digitizer Options: 12-Bit, 3 GS/s or 16-bit, 200 MS/s
  • Real-Time Data Capture to Digitizer Memory
    up to 8 GB or 16 GB
  • Real-Time Data Capture to Data Storage System
    up to 76.8 TB
  • Real-Time No Programming Spectrum Analyzer App:
  • MATLAB Support for Control, Acquisition, and Signal Processing
  • Sustained Gap-Free PCIe Streaming to PC Memory up to 5 GB/s
  • Multi-Channel Systems with 10 MHz In/Out Synchronization
  • Software Application Development Support with
    CompuScope SDK for C/C#
    CompuScope SDK for MATLAB
    CompuScope SDK for LabVIEW

Wideband Downconverter Digitizer Systems

Wideband Downconverter: DC27G100 Front View

Wideband Downconverter: DC27G100 Rear View


The Downconverter RF front end is a unique architecture, consisting of both super-heterodyne and direct conversion technologies that are software selectable. The front-end processing blocks utilize up to 21 pre-select filters to mitigate input-related spurs and image responses.

The Downconverter models, when combined with GaGe High Speed Digitizers, allow for complete real-time signal recording and analysis systems covering frequencies up to 27 GHz. These solutions greatly extend the digitizer's frequency range, and allow those developing applications in R&D, Manufacturing Test, and Field Service high performance, lower cost platforms for complex wideband RF and microwave signal analysis.

Downconverter standard bandwidth modes of 100 MHz, 40 MHz, and 10 MHz are ideally suited for use with the GaGe Razor Express 16XX PCIe Digitizer that features 16-bit resolution sampling up to 200 MS/s, along with up to 16 GB of onboard memory for real-time gap free signal recording at 100 MHz bandwidth.

Downconverter upgrade bandwidth modes of 160 MHz, 80 MHz, and 10 MHz are ideally suited for use with the GaGe EON Express PCIe Digitizer that features 12-bit resolution sampling up to 3 GS/s, along with up to 8 GB of onboard memory for real-time gap free signal recording at 160 MHz bandwidth.

The large FIFO memory of the GaGe digitizers also allow for real-time streaming of I and Q baseband signals at 1.6 GB/s (Razor Express) or 5 GB/s (EON Express) over PCI Express to PC memory for post processing, display, and storage.

27 GHz Wideband Signal Analyzer System Block Diagram

The 4 channel Razor Express CSE1642 digitizer supports two downconverters and the 2 channel EON Express CSE123G2 supports one downconverter. 10 MHz reference inputs and outputs on both the GaGe digitizers and downconverter units provide a single frequency reference for synchronized system performance.

The Digitizers and Downconverters have full control and data acquisition support via Mathworks MATLAB, with example programs furnished to facilitate rapid signal processing and modulation analysis program development. Additional software SDK and example programs are available for C/C# and LabVIEW.

For manual control, testing and setup of the Ethernet connected Downconverters, programs are provided for network discovery, setting carrier frequency, RF / IF gain, filters, etc. Frequency domain signal analysis of the Downconverter baseband output signals is done with the DynamicSignals Spectrum Analyzer program, SpectraScopeRT, supporting integrated digitizer and downconverter control, zoom amplitude and frequency display, cursors, and waveform signal storage/printing.

SpectraScopeRT - Real-Time Spectrum Analyzer Software

The real-time Spectrum Analyzer program, SpectraScopeRT, requires no programming and allows for the control of receiver center frequency and bandwidth, plus digitizer selection and functions. This program also features various X,Y display scale viewing options, multiple cursors, averaging, printing, save/recall of setups, and many other useful features for Spectrum Analyzer type functionality.

SpectraScopeRT Lite Edition supports viewing and capturing acquired data to onboard digitizer memory and is included at no additional charge with the purchase of a supporting digitizer model with the downconverter. SpectraScopeRT Professional Edition adds support for conducting real-time streaming operations of acquired data from the digitizer to the host PC system for signal recording applications and may be purchased separately.

SpectraScopeRT: Spectrum Analyzer Software

SpectraScopeRT showing:

  • Histogram
  • Composite Power Spectrum
  • Persistence Display
  • I Power Spectrum
  • Spectrogram
  • Time Domain Display

WiFi Power Spectrum

SpectraScopeRT showing:

  • A typical WiFi signal using peak hold (red trace) in super-heterodyne mode

Ordering Information

Filter Bank
Part Number
DC8G100 100 kHz - 8 GHz 100 MHz (0 Hz IF),
40 MHz (35 MHz IF)
10 MHz (35 MHz IF)
9-Channel Preselector,
No Pre-Amplifier
DC8GP100 100 kHz - 8 GHz 100 MHz (0 Hz IF),
40 MHz (35 MHz IF)
10 MHz (35 MHz IF)
14-Channel Preselector,
and Pre-Amplifier
DC18G100 100 kHz - 18 GHz 100 MHz (0 Hz IF),
40 MHz (35 MHz IF)
10 MHz (35 MHz IF)
18-Channel Preselector,
and Pre-Amplifier
DC27G100 100 kHz - 27 GHz 100 MHz (0 Hz IF),
40 MHz (35 MHz IF)
10 MHz (35 MHz IF)
21-Channel Preselector,
and Pre-Amplifier
Bandwidth Configuration Upgrade
Can be ordered with any of the above downconverter models. Replaces the standard bandwidth for the optional bandwidth configuration as follows:

160 MHz (0 Hz IF), 80 MHz (55 MHz IF), 10 MHz (35 MHz IF)

NOTE: This bandwidth configuration upgrade requires the selection of the GaGe 12-bit, 3 GS/s EON Express Digitizer or the Signatec 14-bit, 400 MS/s PX14400D2 Digitizer to be paired with the downconverter unit.
Accessory Options
19" rackmount shelf that supports two horizontally mounted downconverter units. DSD-RCK-100
Downconverter Software APIs for C/C++, MATLAB, and LabVIEW Included
SpectraScopeRT Lite Edition - Real-Time Spectrum Analyzer Software
(*Included with purchase of Digitizer Model)
SpectraScopeRT Professional Edition - Real-Time Spectrum Analyzer Software
(*Requires purchase of Digitizer Model)