CA7629 Down-Converter

CA7629 Wideband Down-Converter

COMMSAUDIT PART NUMBER: CA7629

The CA7629 down-converter is intended to increase the operating frequency range of existing 6 GHz receiver systems up to 18 GHz.

  • Extends any 6 GHz receiver to 18 GHz
  • Low Band Input (20 MHz—6 GHz)
  • High Band Input (6 GHz—18 GHz)
  • Two Outputs
  • Flexible Form Factors
  • Time & Frequency Distribution
  • Can be used with any receiver limited to 6 GHz
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Exceptionally Low Noise

When paired with the CA7852 dual-channel receiver, the CA7629 achieves a sub-10 dB noise figure across the entire 20 MHz to 18 GHz range, ensuring exceptional sensitivity and signal clarity. It is ideal for an environment where intercepting weak, distant, or burst transmissions is vital.

Sub-Octave Architecture

Both channels have a fully pre-selected sub-octave architecture with an optional bypass path. The high band down-converted-path converts 6 GHz—18 GHz signals down to an IF of 3.5 GHz with an instantaneous bandwidth of 1GHz. The switched filter banks along with adjustable gain enable high linearity to be maintained in congested RF environments. The low band operates from 20 MHz to 6 GHz and includes broadcast FM and DAB notches to reduce intermodulation by blockers.

Use with any 6 GHz Reciever

The CA7629 down-converter is a robust module available in a variety of form factors ranging from rack-mounting modules, rugged outdoor enclosures (e.g. mast mounted) or as a bare module for 3rd party integration – it can be used with any 6 GHz receiver.

Wideband Down-Converter 20 MHz to 18 GHz

The CA7629 down-converter is intended to increase the operating frequency range of existing 6 GHz receiver systems up to 18 GHz.

The CA7629 has two inputs, low band operating from 20 MHz—6 GHz, and high band operating from 6 GHz—18 GHz.
The low band path does not provide frequency conversion, but does provide signal conditioning incorporating low noise amplifiers to maximise sensitivity, selectable sub-octave filters and variable gain. For urban use-cases, a filter bypass-path incorporates FM and DAB band stop filters to supress high power broadcast signals and enable search in adjacent bands with high sensitivity.

The high band input is via a precision 3.5mm SMA connector, the down-converter provides frequency conversion from any RF frequency 6 GHz—18 GHz down to an IF of 3.5 GHz with a bandwidth of 1 GHz. The signal conditioning for the high-band path includes low noise amplifiers to maximise sensitivity, selectable sub-octave filters and variable gain.

The CA7629 has two outputs, internal switching makes either input available at either output.

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