The SC5318A from SignalCore is a Single-Stage Downconverter with an input RF range from C to K-band (6 to 26.5 GHz) and output IF Range from 50 MHz to 3 GHz. The LO frequency range is from 6 to 26.5 GHz with an external input LO range from 6 to 14 GHz. An internal frequency doubler multiplies the input LO range up to 26.5 GHz. The module also contains an internal 26.5 GHzsynthesized local oscillator (LO), an RF preamplifier, and a variable gain control making it a compact stand-alone downconverter module. With the option for an external LO signal, the SC5318A may be configured for SISO applications or paired together for MIMO applications such as ground-based satellite communications, point-to-point radio, and test instrument systems.
The SC5318A also features a bypass path for lower frequencies so it can be combined with the C band downconverters such as the SignalCore SC5308A to form a broadband 100 kHz to 26.5 GHz downconverter system.
For systems requiring spectral selectivity, especially those used in open environments such as spectral monitoring, RF and IF bandpass filters may be placed at the RF input and IF output ports respectively to suppress unwanted signals and improve out-of-band noise. An external IF filter will also provide further suppression of out-of-band internally generated spurious signals and LO leakages. It is available in a module that measures 3.7 x 0.75 x 6.1 inches with SMA female connectors.
