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HomeModularSC2250 – 18 GHz Frequency Extension Module

SC2250 – 18 GHz Frequency Extension Module

The SC2250 extends the useful range of traditional 6 GHz RF instruments for operation at microwave frequencies up to 18 GHz. It provides excellent integration capability with other modular products such as National Instruments’ Vector Signal Transceiver (VST). Selectable filtering is provided for signal conditioning applications requiring spurious and harmonic rejection.

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Both up- and down-conversion functions are housed in a single-slot PXIe module. An independent local oscillator (LO) is available for each block. Optional LO input ports are provided to support measurements requiring extremely low phase noise performance.

The down-converter includes a bypass path to minimize cable swapping when the mixer is not required. The bypass path includes a user-selectable filter bank and low noise amplifier for signal conditioning purposes. For harmonic measurement applications, a bank of high pass filters (HPF) is available to reject the fundamental signal and provide better dynamic range. The down-converted signal is passed through 5GHz intermediate frequency (IF) filter for spurious rejection prior to output from the module.

Like its counterpart, the up-conversion path includes bypass capability and several signal conditioning options. Self calibration of the instrument is possible using the built-in loop back signal in the up-converter.